亚洲欧洲日产国码无码久久99 ,亚洲国产精品日韩在线观看,亚洲国产模特在线播放

091118求杨辉三角中的项

lzj520 — Wed, 18 Nov 2009 08:11:00 GMT

public static int recursion(int l,int n){
  int r=0;
  if(l==1|n==1|l==n){
   return 1;
  }else{
  return recursion(l-1,n-1)+recursion(l-1,n);
  }
}

public static void main(String[] args){
System.out.println(recursion(7,4));
}

lzj520 2009-11-18 16:11 发表评论

lzj520 — Tue, 05 May 2009 09:18:00 GMT

解决用james攉��件时邮�g自己跑去了spam box下面的问题，把下面这�D�|��释掉��可以了�?/p>

                 class="ToProcessor">
           spam
           550 Requested action not taken: rejected - see http://njabl.org/

lzj520 2009-05-05 17:18 发表评论

090310 Exercise 1.12 Pascal's triangle

lzj520 — Tue, 10 Mar 2009 11:21:00 GMT

(define (Pascal x y)
(cond ((> y x) (display "error input"))
        ((= x 1) 1)
        ((= x 2) 1)
        ((= y 1) 1)
        ((= x y) 1)
        (else
         (+ (Pascal(- x 1) y) (Pascal (- x 1) (- y 1))
         ))))

lzj520 2009-03-10 19:21 发表评论

090310 RHEL 下安装带mod_prox模块的apache

lzj520 — Tue, 10 Mar 2009 11:06:00 GMT

./configure --enable-modes-shared=proxy
make
make install

或是不重新安装的情况下：
make WITH_PROXY_MODULE=yes

lzj520 2009-03-10 19:06 发表评论

090310 RHEL 下挂载windows文�g目录

lzj520 — Tue, 10 Mar 2009 11:04:00 GMT

讉K��Q?br /> smbclient -L 192.168.0.11 -U administrator
挂蝲�Q?br /> mount -t smbfs -o username=administrator,password=pwdabc,iocharset=cpq36 //192.168.0.11/share /mnt/11share

lzj520 2009-03-10 19:04 发表评论

090310 Exercise 1.11. recursive process and iterative

lzj520 — Tue, 10 Mar 2009 00:51:00 GMT

Exercise 1.11.  A function f is defined by the rule that f(n) = n if n<3 and f(n) = f(n - 1) + 2f(n - 2) + 3f(n - 3) if n> 3. Write a procedure that computes f by means of a recursive process. Write a procedure that computes f by means of an iterative process.

recursive:

(define (fn n)
(cond ((>= n 3) (+ (+ (fn (- n 1)) (* 2 (fn (- n 2)))) (* 3 (fn (- n 3)))))
        ((< n 3) n)
   ))

iterative:

(define (re n)
(if (< n 3)
      n
      (iter 2 1 0 n)
      ))
(define (iter a b c n)
(if(= n 3)
   (ca a b c)
   (iter (ca a b c) a b (- n 1))
   )
)
(define (ca a b c)
(+ a (* 2 b) (* 3 c) )
)

lzj520 2009-03-10 08:51 发表评论

090306 Exercise 1.8 cube-root procedures

lzj520 — Fri, 06 Mar 2009 08:22:00 GMT

Exercise 1.8. Newton's method for cube roots is based on the fact that if y is an approximation to
the cube root of x, then a better approximation is given by the value
(x/y2+2y)/3
Use this formula to implement a cube-root procedure analogous to the square-root procedure. (In
section 1.3.4 we will see how to implement Newton's method in general as an abstraction of these
square-root and cube-root procedures.)

(define (cube x)
(* x x x))
(define (square x)
(* x x ))
(define (result x y)
(/ (+ (/ x (square y)) (* 2 y)) 3))
(define (improve x guess)
(result   x guess))
(define (good-enough? x guess)
(< (abs (- (* guess guess guess ) x))0.001))
(define (sqrt-iter x guess)
(if (good-enough? x guess)
      guess
      (sqrt-iter x (improve x guess)
                 )))

lzj520 2009-03-06 16:22 发表评论

090306 Exercise 1.6 Square Roots by Newton's Method

lzj520 — Fri, 06 Mar 2009 07:19:00 GMT

Exercise 1.6. Alyssa P. Hacker doesn't see why if needs to be provided as a special form. ``Why
can't I just define it as an ordinary procedure in terms of cond?'' she asks. Alyssa's friend Eva Lu
Ator claims this can indeed be done, and she defines a new version of if:
(define (new-if predicate then-clause else-clause)
(cond (predicate then-clause)
        (else else-clause)))
Eva demonstrates the program for Alyssa:
(new-if (= 2 3) 0 5)
5
(new-if (= 1 1) 0 5)
0
Delighted, Alyssa uses new-if to rewrite the square-root program:
32(define (sqrt-iter guess x)
(new-if (good-enough? guess x)
          guess
          (sqrt-iter (improve guess x)
                     x)))
What happens when Alyssa attempts to use this to compute square roots? Explain.

(define (new-if predicate then-clause else-clause)
(cond (predicate then-clause)
      (else-clause)))
(define (average x y)
(/ (+ x y) 2))
(define (improve guess x)
(average guess (/ x guess)))
(define (good-enough? guess x)
(< (abs (- (square guess) x))0.001))
(define (square x)
(* x x))
(define (sqrt-iter guess x)
(new-if (good-enough? guess x)
          guess
          (sqrt-iter (improve guess x)
                     x)))

sqrt-iter (improve guess x)作�ؓ参数来传递给new-if�Q�在执行new-if的时候，��L��会执行sqrt-iter (improve guess x)�Q�造成了死循环�?br />

lzj520 2009-03-06 15:19 发表评论

090305 Exercise 1.3 returns the sum of the squares of the two larger numbers

lzj520 — Thu, 05 Mar 2009 11:56:00 GMT

Define a procedure that takes three numbers as arguments and returns the sum of the squares of the two larger numbers.

(define (compare x y) (- x y))
(define (sumsquares x y)(+(* x x)(* y y)))
(define (returnlarge a b c)
(cond ((and (>= (compare a b) 0) (>= (compare c b) 0)) (sumsquares a c))
        ((and (>= (compare a c) 0) (>= (compare b c) 0)) (sumsquares a b))
        ((and (>= (compare c a) 0) (>= (compare b a) 0)) (sumsquares b c))
         )
)
(returnlarge 3 3 2)

>18

lzj520 2009-03-05 19:56 发表评论

090213 集群内用jsessionid�׃�nsession

lzj520 — Fri, 13 Feb 2009 08:46:00 GMT

可以采用cookies和sessionid的做法，�q�里是��用sessionid的做法�?br /> 使用HttpSessionListener来监听session的创建和销毁，集群内部的tomcat开启session复制�?个应用都试用HttpSessionListener来监�?br />
web.xml�Q?br />

com.com.ActiveUserListener2

ActiveUserListener2.java

package com.com;

import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;

public class ActiveUserListener2 implements HttpSessionListener {
private static int sessionCount2 = 0;
private static Map sessionMaps2 = new HashMap(); //存放session的集合类

public void sessionCreated(HttpSessionEvent arg0) {
        HttpSession session = arg0.getSession();
        String sessionId = session.getId();
        System.out.println("Create a session:" + sessionId);
        sessionMaps2.put(sessionId, session);
        sessionCount2++;
}

public void sessionDestroyed(HttpSessionEvent arg0) {
        sessionCount2--;
        String sessionId = arg0.getSession().getId();
        sessionMaps2.remove(sessionId);//利用会话ID标示特定会话
        System.out.println("Destroy a session:" + sessionId);
}
public static int getSessionCount() {
return sessionCount2;
    }
    public static Map getSessionMaps() {
     return sessionMaps2;
    }
}

传递sessionid�Q?jsessionid=<%=session.getId()%>

��试效果�Q?br /> <%
Map activeSessions = ActiveUserListener2.getSessionMaps();
             out.println(activeSessions.get("CB55ABC39DD5B917D65F456C28FC25E6.tomcat1"));
             out.println(activeSessions);
            }
      }
%>

lzj520 2009-02-13 16:46 发表评论

090211 使用imagemagick扚w��改变囄��寸

lzj520 — Wed, 11 Feb 2009 05:58:00 GMT

for %I in (*.jpg) do convert %I -resize 130x130 -quality 85% +profile "*" %~nI.jpg

lzj520 2009-02-11 13:58 发表评论

lzj520 — Mon, 09 Feb 2009 03:44:00 GMT

      Options SymLinksIfOwnerMatch
             RewriteEngine on
       RewriteCond %{HTTP_REFERER} !^http://localhost.*$ [NC]
             RewriteRule .*\.(gif|jpg|jpeg|JPG)$   http://www.xx.cn/images/xx.gif [R,NC]

lzj520 2009-02-09 11:44 发表评论

090208 ubuntu 安装tomcat 6

lzj520 — Sun, 08 Feb 2009 13:31:00 GMT

$wget http://labs.xiaonei.com/apache-mirror/tomcat/tomcat-6/v6.0.18/bin/apache-tomcat-6.0.18.tar.gz
$sudo tar zxvf apache-tomcat-6.0.18.tar.gz -C /opt
�?etc目录�?br /> $gedit environment
加入
classpath=/lzj/桌面/jdk.1.6.0_10/lib
JAVA_HOME=/lzj/桌面/jdk.1.6.0_10/
�?opt/apache-tomcat-6.0.18/bin目录�?br /> $sudo ./startup.sh
在firefox中访问：
http://localhost:8080�Q�见到tomcat讉K��面
停止tomcat
$sudo /opt/apache-tomcat-6.0.18/bin/shutdown.sh

lzj520 2009-02-08 21:31 发表评论

090119 升��到swfupload 2.2.0

lzj520 — Mon, 19 Jan 2009 07:42:00 GMT

之前一直正�怋�用的swfupload�H�然用不了，�q�是�׃��flash play10的缘故。所以需要升�U�到对应的swfupload 2.2.0

升��必须要做的：

更换swfupload.swf、swfupload.js、default.css

��原来的onClick="swfu.selectFiles();的按钮修改�ؓ�Q?lt;span id="spanButtonPlaceholder" >

在setting里加多：
   button_image_url : "images/XPButtonNoText_160x22.png", // Relative to the SWF file
    button_placeholder_id : "spanButtonPlaceholder",
    button_width: 160,
    button_height: 22,
    button_text : '请选择囄��(10MB Max)',
    button_text_style : '.button { font-family: Helvetica, Arial, sans-serif; font-size: 14pt; } .buttonSmall { font-size: 10pt; }',
    button_text_top_padding: 1,
    button_text_left_padding: 5,

��p��么多了�?

lzj520 2009-01-19 15:42 发表评论

081123 ubuntu安装jdk6

lzj520 — Sun, 23 Nov 2008 04:53:00 GMT

$sudo apt-get install sun-java6-jdk

lzj520 2008-11-23 12:53 发表评论

081122 ubuntu安装scim

lzj520 — Sat, 22 Nov 2008 13:41:00 GMT

ubuntu8.10 �Q?br />
$sudo apt-get update
$sudo aptitude install scim-pinyin
$sudo apt-get apt-get install scim
$sudo apt-get apt-get install scim-pinyin
$sudo apt-get apt-get install scim-chinese

lzj520 2008-11-22 21:41 发表评论

081117 使用POI��查询记录输入到excel

lzj520 — Mon, 17 Nov 2008 03:32:00 GMT

先写入一行作��格头部，然后查询取得一个list�Q�然后��@环�ƈ调用createCell�Ҏ��攑օ�excel表中�Q?br />
public void CreateExcel(String filename){
  HSSFWorkbook wb = new HSSFWorkbook();
  HSSFSheet sheet = wb.createSheet("new sheet");
  HSSFRow row = sheet.createRow((short) 0);
  createCell(wb, row, (short) 0, HSSFCellStyle.ALIGN_CENTER,"Login Name");
  createCell(wb, row, (short) 1, HSSFCellStyle.ALIGN_CENTER_SELECTION,"Login Name");
  createCell(wb, row, (short) 2, HSSFCellStyle.ALIGN_FILL,"Password");
  createCell(wb, row, (short) 3, HSSFCellStyle.ALIGN_GENERAL,"Name");
  createCell(wb, row, (short) 4, HSSFCellStyle.ALIGN_JUSTIFY,"Create Time");

  List ls = manager.getAllUserExcel();

  int i = 1;
  for (Iterator it = ls.iterator();it.hasNext();i++){
  row = sheet.createRow((short) i);
  Object[] o = (Object[])it.next();

  String a="";
  try{
  a = o[0].toString();
  }catch(Exception e){};
  String b="";
  try{
  b = o[1].toString();
  }catch(Exception e){};
  String c="";
  try{
  c = o[2].toString();
  }catch(Exception e){};
  String d="";
  try{
  d = o[3].toString();
  }catch(Exception e){};
  String e="";
  try{
  e = o[4].toString();
  }catch(Exception z){};

  createCell(wb, row, (short) 0, HSSFCellStyle.ALIGN_CENTER,a);
  createCell(wb, row, (short) 1, HSSFCellStyle.ALIGN_CENTER_SELECTION,b);
  createCell(wb, row, (short) 2, HSSFCellStyle.ALIGN_FILL,c);
  createCell(wb, row, (short) 3, HSSFCellStyle.ALIGN_GENERAL,d);
  createCell(wb, row, (short) 4, HSSFCellStyle.ALIGN_JUSTIFY,e);

  }

  // Write the output to a file
  FileOutputStream fileOut = null;
  try {
   fileOut = new FileOutputStream(filename);
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  try {
   wb.write(fileOut);
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  try {
   fileOut.close();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
}

createCell�Ҏ��Q?/strong>
private static void createCell(HSSFWorkbook wb, HSSFRow row, short column, short align,String value)
{
  HSSFCell cell = row.createCell(column);
  cell.setCellValue(value);
  HSSFCellStyle cellStyle = wb.createCellStyle();
  cellStyle.setAlignment(align);
  cell.setCellStyle(cellStyle);
}

用到的包�Q?/strong>

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFRichTextString;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;

lzj520 2008-11-17 11:32 发表评论

081114 分页昄��json数据

lzj520 — Fri, 14 Nov 2008 03:49:00 GMT
客户端��用jquery�Q�设�|�了上一��和下一��作为分��ƈ昄��总页数和当前��|��Q��ƈ把返回的json用div+span昄��Q?/strong>

$.ajaxSetup({
beforeSend: function() {
$("#back").html('');
},
complete: function() {},
error:function(){$("#back").html('read data error..');},
method: "post",
timeout:50000,
cache:false
});

function loaddatapage(page){
$("#detail").html('');
$.ajax({
dataType:'json',
url:"<%=request.getContextPath()%>/jiner/jiner.action",
data:"pagenum=" + page,
success:function(data){
$("#detail").append('
金额旉��操作�?lt;/span>所在IP
');
$.each(data.list,function(i,n){
$("#detail").append('
'+ data.list[i][0] + '' + data.list[i][2] + '' + data.list[i][1] + '' + data.list[i][3] + '
');
})
var prepage=page-1;
var nextpage=page+1;
if(prepage<=0){prepage=1;}
if(nextpage>data.amountPage){nextpage=data.amountPage;}
$("#detail").append('
当前��：'+ page + '/'+ data.amountPage + '上一��?lt;/button>

081108 GWT分页昄��数据

lzj520 — Sat, 08 Nov 2008 07:25:00 GMT
��Z��上一��日志的实例的基��上修改：

CRUDService.java�Q?br />

package client;

import com.google.gwt.user.client.rpc.ServiceDefTarget;
import com.google.gwt.user.client.rpc.RemoteService;
import com.google.gwt.core.client.GWT;

public interface CRUDService extends RemoteService {
     Student[] getStudent(String PageNum)     ;

    String getPagenum();

    public static class App {
        private static CRUDServiceAsync ourInstance = null;

        public static synchronized CRUDServiceAsync getInstance() {
            if (ourInstance == null) {
                ourInstance = (CRUDServiceAsync) GWT.create(CRUDService.class);
                ((ServiceDefTarget) ourInstance).setServiceEntryPoint(GWT.getModuleBaseURL() + "CRUD/CRUDService");
            }
            return ourInstance;
        }
    }
}

CRUDServiceImpl.java�Q?br />

package server;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;
import client.CRUDService;
import client.Student;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Hibernate;
import org.hibernate.Query;
import org.hibernate.cfg.Configuration;
import java.util.List;
import java.util.Iterator;

public class CRUDServiceImpl extends RemoteServiceServlet implements CRUDService {
    private static final SessionFactory sessionFactory;
    String Pagenum = "1";
    static {
            try {
                // Create the SessionFactory from hibernate.cfg.xml
                sessionFactory = new Configuration().configure().buildSessionFactory();
            } catch (Throwable ex) {
                // Make sure you log the exception, as it might be swallowed
                System.err.println("Initial SessionFactory creation failed." + ex);
                throw new ExceptionInInitializerError(ex);
            }
        }

        public static SessionFactory getSessionFactory() {
            return sessionFactory;
        }

    public List ListStudent(String PageNum){
       Session session = getSessionFactory().getCurrentSession() ;
        session.beginTransaction();
         Query query = session.createSQLQuery("select * from t_student")
        .addScalar("id", Hibernate.LONG)
        .addScalar("name", Hibernate.STRING)
        .addScalar("email", Hibernate.STRING);
        int PageSize = 10;

        try{
            if (Integer.parseInt(PageNum)!=0 | PageNum!=null ){
            query.setFirstResult((Integer.parseInt(PageNum)-1) * PageSize);
            query.setMaxResults(PageSize);
            }else{
            query.setFirstResult(0);
            query.setMaxResults(PageSize);
            }
        }catch(Exception e){
            query.setFirstResult(0);
            query.setMaxResults(PageSize);
        }
        List ls = query.list();
        session.getTransaction().commit();
        return ls;
    }

    public int CountStudent(){
       Session session = getSessionFactory().getCurrentSession() ;
        session.beginTransaction();
         List ls = session.createSQLQuery("select count(*) from t_student").list();
        session.getTransaction().commit();
        return Integer.parseInt(ls.iterator().next().toString());
    }

        public Student[] getStudent(String PageNum){
             this.setPagenum(PageNum);
             Student[] student = new Student[this.CountStudent()];
            int i = 0;
          for(Iterator it = this.ListStudent(PageNum).iterator();it.hasNext();i++) {
             Object[] ob = (Object[] )it.next();
                student[i]=new Student(ob[0].toString(),ob[1].toString(),ob[2].toString());

          }

             return student;
          }

     public void setPagenum(String pagenum){
         this.Pagenum = pagenum;
     }

    public String getPagenum() {
        return Pagenum; //To change body of implemented methods use File | Settings | File Templates.
    }

}

CRUDServiceAsync.java :

package client;

import com.google.gwt.user.client.rpc.AsyncCallback;

public interface CRUDServiceAsync {

    void getStudent(String PageNum, AsyncCallback async);

    void getPagenum(AsyncCallback async);
}

CRUD.java :

package client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.*;
import com.google.gwt.user.client.rpc.AsyncCallback;

public class CRUD implements EntryPoint {
    private CRUDServiceAsync crudServiceAsync ;
    VerticalPanel main = new VerticalPanel();
    FlexTable lb = new FlexTable();
    HorizontalPanel hp = new HorizontalPanel();
    Button nextpage = new Button("nextpage");
    Button prepage = new Button("prepage");
    private String pagenum = "1";

    public void setPagenum(String pagenum){
        this.pagenum=pagenum;
    }
    public String getPagenum(){
        return this.pagenum;
    }
    int prepagenum = 1;
    int nextpagenum =1;

    public void onModuleLoad() {
        main.add(lb);
        main.add(hp);
        hp.add(prepage);
        hp.add(nextpage);
        RootPanel.get().add(main);
        showstudentlist("1");

       prepage.addClickListener(new ClickListener(){
       public void onClick (Widget sender){
       prepagenum = Integer.parseInt(getPagenum())-1;
       showstudentlist(String.valueOf(prepagenum));
       }
     });

     nextpage.addClickListener(new ClickListener(){
      public void onClick (Widget sender){
       nextpagenum = Integer.parseInt(getPagenum())+1 ;
     showstudentlist(String.valueOf(nextpagenum));
      }
      });

    }

     private void showstudentlist(String pagenum) {
         CRUDService.App.getInstance().getStudent(pagenum,new AsyncCallback(){
                  public void onFailure(Throwable caught) {
                  }
                  public void onSuccess(Object result) {
                    Student s[] = ( Student[])result ;
                      for (int i=0;i<=s.length;i++){
                          lb.setText(i,0,s[i].id);
                          lb.setText(i,1,s[i].name);
                          lb.setText(i,2,s[i].email);
                      }
                  }
              });

        CRUDService.App.getInstance().getPagenum(new AsyncCallback(){
            public void onFailure(Throwable caught) {}
            public void onSuccess(Object result) {
                   setPagenum((String)result);
            }
        });

    }

}

lzj520 2008-11-08 15:25 发表评论

lzj520 — Wed, 05 Nov 2008 23:28:00 GMT

CRUD.gwt.xml�Q?/strong>







EntryPoint�Q�CRUD.java�Q��用VerticalPanel 来显�C�List�Q?/strong>

package client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.*;
import com.google.gwt.user.client.rpc.AsyncCallback;

public class CRUD implements EntryPoint {
    VerticalPanel main = new VerticalPanel();
    FlexTable lb = new FlexTable();
    public void onModuleLoad() {
        main.add(lb);
        RootPanel.get().add(main);
              CRUDService.App.getInstance().getStudent(new AsyncCallback(){

                  public void onFailure(Throwable caught) {
                      //To change body of implemented methods use File | Settings | File Templates.
                  }

                  public void onSuccess(Object result) {
                    Student s[] = ( Student[])result ;
                      for (int i=0;i<=s.length;i++){
                     lb.setText(i,0,s[i].id);
                          lb.setText(i,1,s[i].name);
                          lb.setText(i,2,s[i].email);
                      }
                  }
              }) ;
    }
}

ENTITY�Q�Student.java�Q?/strong>

package client;

import com.google.gwt.user.client.rpc.IsSerializable;

public class Student implements IsSerializable {
    public String id,name,email;
    public Student(){

    }
    public Student(String id,String name,String email) {
    this.id=id;
    this.name=name;
    this.email=email;
    }
}

SERVICE�Q�CRUDService.java�Q?/strong>

package client;

import com.google.gwt.user.client.rpc.ServiceDefTarget;
import com.google.gwt.user.client.rpc.RemoteService;
import com.google.gwt.core.client.GWT;

public interface CRUDService extends RemoteService {

     Student[] getStudent()     ;

    public static class App {
        private static CRUDServiceAsync ourInstance = null;

        public static synchronized CRUDServiceAsync getInstance() {
            if (ourInstance == null) {
                ourInstance = (CRUDServiceAsync) GWT.create(CRUDService.class);
                ((ServiceDefTarget) ourInstance).setServiceEntryPoint(GWT.getModuleBaseURL() + "CRUD/CRUDService");
            }
            return ourInstance;
        }
    }
}

SERVICEImpl�Q?/strong>CRUDServiceImpl.java�Q�这里��用直接连接hibernate的方法用native sql查询数据�Q�不需要专门创建实体类和配�|�文�Ӟ��

package server;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;
import client.CRUDService;
import client.Student;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Hibernate;
import org.hibernate.cfg.Configuration;
import java.util.List;
import java.util.Iterator;

public class CRUDServiceImpl extends RemoteServiceServlet implements CRUDService {
    private static final SessionFactory sessionFactory;
    static {
            try {
                sessionFactory = new Configuration().configure().buildSessionFactory();
            } catch (Throwable ex) {
                System.err.println("Initial SessionFactory creation failed." + ex);
                throw new ExceptionInInitializerError(ex);
            }
        }

        public static SessionFactory getSessionFactory() {
            return sessionFactory;
        }

    public List ListStudent(){
       Session session = getSessionFactory().getCurrentSession() ;
        session.beginTransaction();
         List ls = session.createSQLQuery("select * from t_student")
        .addScalar("id", Hibernate.LONG)
        .addScalar("name", Hibernate.STRING)
        .addScalar("email", Hibernate.STRING).list();
        session.getTransaction().commit();
        return ls;
    }

    public int CountStudent(){
       Session session = getSessionFactory().getCurrentSession() ;
        session.beginTransaction();
         List ls = session.createSQLQuery("select count(*) from t_student").list();
        session.getTransaction().commit();
        return Integer.parseInt(ls.iterator().next().toString());
    }

        public Student[] getStudent(){
             Student[] student = new Student[this.CountStudent()];
            int i = 0;
          for(Iterator it = this.ListStudent().iterator();it.hasNext();i++) {
             Object[] ob = (Object[] )it.next();
                student[i]=new Student(ob[0].toString(),ob[1].toString(),ob[2].toString());
          }
             return student;
          }

}

异步调用�c�CRUDServiceAsync.java�Q?/strong>

package client;

import com.google.gwt.user.client.rpc.AsyncCallback;

public interface CRUDServiceAsync {
    void getStudent(AsyncCallback async);
}

最后，在src目录下创建hibernate.cfg.xml�Q�这里��用mysql�Q?/strong>

"-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

  com.mysql.jdbc.Driver

  jdbc:mysql://localhost:3306/mysql

root
root

1

  org.hibernate.dialect.MySQLDialect

thread

  org.hibernate.cache.NoCacheProvider

true

mysql for j

lzj520 2008-11-06 07:28 发表评论

081102 struts2 + swfupload 扚w��上传囄��

lzj520 — Sat, 01 Nov 2008 22:25:00 GMT
upload.jsp�Q?br /> 在这个文仉��Q��用了新swfload的上传方式，��文件流发送到struts2的doMultipleUploadUsingList.action�Q�uploadStart的这个function�Q�是��页面上�?id"元素的��g��起带�q�去�Q�上传过�E�中�Q�会在divStatus的DIV中显�C�Z��传进度条�?br />

<%@ page contentType="text/html; charset=utf-8"%>















                    误��入��品ID








后台使用SmartUpload�Q?br />

<%@ page contentType="text/html;charset=gb2312" language="java" import="java.io.*,java.awt.Image,java.awt.image.*,com.sun.image.codec.jpeg.*,
java.sql.*,com.jspsmart.upload.*,java.util.*,com.yourcompany.util.*"%>
<%
SmartUpload mySmartUpload =new SmartUpload();
long file_size_max=4000000;
//add

//初始�?br /> mySmartUpload.initialize(pageContext);
//只允�怸�载此�c�L��?br /> try {
mySmartUpload.setAllowedFilesList("jpg,gif");
//上蝲文�g
mySmartUpload.upload();
} catch (Exception e){
%>

<%
}
//try{

    com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(0);
    if (myFile.isMissing()){%>

    <%}
    else{

String fileName2="",ext="",testvar="";
String productname=mySmartUpload.getRequest().getParameter("product");
String url="/uploadfile/"+productname+"/";      //应保证在根目录中有此目录的存�?/p>

java.io.File file1 = new java.io.File(request.getRealPath("/") + url );
   if(!file1.exists())
{
   file1.mkdir();
}

      //String myFileName=myFile.getFileName(); //取得上蝲的文件的文�g�?br />    ext= myFile.getFileExt();      //取得后缀�?br />    int file_size=myFile.getSize();     //取得文�g的大��?nbsp;
   String saveurl="";
   if(file_size
int temp=1,temp2=0;
    String[] a=myFile.getFileName().split(".jpg");
    String myFileNameo = productname+"_00_pic_big";
String myFileName = productname+"_0"+temp;

    Calendar calendar = Calendar.getInstance();
    String filename = String.valueOf(calendar.getTimeInMillis());
    saveurl=request.getRealPath("/")+url;
    saveurl+=myFileNameo+"."+ext;          //保存路径



    myFile.saveAs(saveurl,mySmartUpload.SAVE_PHYSICAL);
// java.io.File f1   =   new java.io.File (saveurl);
// java.io.File    f2   =   new   java.io.File (request.getRealPath("/")+url+myFileName+"_0_big.jpg");
// f1.renameTo(f2);
    //out.print(filename);
//-----------------------上传完成�Q�开始生成羃略图-------------------------

com.yourcompany.util.DirList dirlist = new com.pixel.util.DirList();
String[] dir =dirlist.list(request.getRealPath("/") + url );

for(int i=0;i //for (String i : dir){
String[] split = dir[i].split("\\.");
      if(split[1].equals("jpg")){
      String[] split2=split[0].split("\\_");
      //split2[1]=01
   if(Integer.parseInt(split2[1])>0&Integer.parseInt(split2[1])>=temp2){
   temp2=Integer.parseInt(split2[1])+1;
   }
   if(Integer.parseInt(split2[1])==0){
   temp2=1;
   }
    }
}

if(temp2<=10){
myFileName = productname+"_0"+temp2;
}else{
myFileName = productname+"_"+temp2;
}

//myFileName = mySmartUpload.getRequest().getParameter("product");
    java.io.File file = new java.io.File(saveurl);        //��d��刚才上传的文�?br />     String newurl=request.getRealPath("/")+url+myFileName+"_70_min."+ext; //新的�~�略图保存地址
    Image src = javax.imageio.ImageIO.read(file);                     //构造Image对象
    float tagsize=70;
    int old_w=src.getWidth(null);                                     //得到源图�?br />     int old_h=src.getHeight(null);
    int new_w=0;
    int new_h=0;                            //得到源图�?br />     int tempsize;
    float tempdouble;
    if(old_w>old_h){
     tempdouble=old_w/tagsize;
    }else{
     tempdouble=old_h/tagsize;
    }
    new_w=Math.round(old_w/tempdouble);
    new_h=Math.round(old_h/tempdouble);//计算新图长宽
    BufferedImage tag = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
    tag.getGraphics().drawImage(src,0,0,new_w,new_h,null);       //�l�制�~�小后的�?br />     FileOutputStream newimage=new FileOutputStream(newurl);          //输出到文件流
    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(newimage);
    encoder.encode(tag);                                               //�q�JPEG�~�码

            //��d��刚才上传的文�?br />     newurl=request.getRealPath("/")+url+myFileName+"_130_min."+ext; //新的�~�略图保存地址
    //Image src = javax.imageio.ImageIO.read(file);                     //构造Image对象
    tagsize=130;
// int old_w2=src2.getWidth(null);                                     //得到源图�?br /> // int old_h2=src2.getHeight(null);
   // int new_w=0;
   // int new_h=0;                            //得到源图�?br />    // int tempsize;
// float tempdouble;
    if(old_w>old_h){
     tempdouble=old_w/tagsize;
    }else{
     tempdouble=old_h/tagsize;
    }
    new_w=Math.round(old_w/tempdouble);
    new_h=Math.round(old_h/tempdouble);//计算新图长宽
     tag = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
    tag.getGraphics().drawImage(src,0,0,new_w,new_h,null);       //�l�制�~�小后的�?br />     newimage=new FileOutputStream(newurl);          //输出到文件流
    encoder = JPEGCodec.createJPEGEncoder(newimage);
    encoder.encode(tag);                                               //�q�JPEG�~�码

     newurl=request.getRealPath("/")+url+myFileName+"_180_min."+ext; //新的�~�略图保存地址
    //Image src = javax.imageio.ImageIO.read(file);                     //构造Image对象
    tagsize=180;
// int old_w2=src2.getWidth(null);                                     //得到源图�?br /> // int old_h2=src2.getHeight(null);
   // int new_w=0;
   // int new_h=0;                            //得到源图�?br />    // int tempsize;
// float tempdouble;
    if(old_w>old_h){
     tempdouble=old_w/tagsize;
    }else{
     tempdouble=old_h/tagsize;
    }
    new_w=Math.round(old_w/tempdouble);
    new_h=Math.round(old_h/tempdouble);//计算新图长宽
     tag = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
    tag.getGraphics().drawImage(src,0,0,new_w,new_h,null);       //�l�制�~�小后的�?br />     newimage=new FileOutputStream(newurl);          //输出到文件流
    encoder = JPEGCodec.createJPEGEncoder(newimage);
    encoder.encode(tag);                                               //�q�JPEG�~�码

     newurl=request.getRealPath("/")+url+myFileName+"_500_min."+ext; //新的�~�略图保存地址
    //Image src = javax.imageio.ImageIO.read(file);                     //构造Image对象
    tagsize=500;
// int old_w2=src2.getWidth(null);                                     //得到源图�?br /> // int old_h2=src2.getHeight(null);
   // int new_w=0;
   // int new_h=0;                            //得到源图�?br />    // int tempsize;
// float tempdouble;
    if(old_w>old_h){
     tempdouble=old_w/tagsize;
    }else{
     tempdouble=old_h/tagsize;
    }
    new_w=Math.round(old_w/tempdouble);
    new_h=Math.round(old_h/tempdouble);//计算新图长宽
     tag = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
    tag.getGraphics().drawImage(src,0,0,new_w,new_h,null);       //�l�制�~�小后的�?br />     newimage=new FileOutputStream(newurl);          //输出到文件流
    encoder = JPEGCodec.createJPEGEncoder(newimage);
    encoder.encode(tag);                                               //�q�JPEG�~�码

newurl=request.getRealPath("/")+url+myFileName+"_800_min."+ext; //新的�~�略图保存地址
    //Image src = javax.imageio.ImageIO.read(file);                     //构造Image对象
    tagsize=800;
// int old_w2=src2.getWidth(null);                                     //得到源图�?br /> // int old_h2=src2.getHeight(null);
   // int new_w=0;
   // int new_h=0;                            //得到源图�?br />    // int tempsize;
// float tempdouble;
    if(old_w>old_h){
     tempdouble=old_w/tagsize;
    }else{
     tempdouble=old_h/tagsize;
    }
    new_w=Math.round(old_w/tempdouble);
    new_h=Math.round(old_h/tempdouble);//计算新图长宽
     tag = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
    tag.getGraphics().drawImage(src,0,0,new_w,new_h,null);       //�l�制�~�小后的�?br />     newimage=new FileOutputStream(newurl);          //输出到文件流
    encoder = JPEGCodec.createJPEGEncoder(newimage);
    encoder.encode(tag);                                               //�q�JPEG�~�码

newimage.close();

   }
   else{
    out.print("");
   }
}
//}catch (Exception e){

//e.toString();

//}
%>

其中�Q?br /> com.yourcompany.util.DirList dirlist = new com.yourcompany.DirList();
String[] dir =dirlist.list(request.getRealPath("/") + url );

for(int i=0;i //for (String i : dir){
String[] split = dir[i].split("\\.");
      if(split[1].equals("jpg")){
      String[] split2=split[0].split("\\_");
      //split2[1]=01
   if(Integer.parseInt(split2[1])>0&Integer.parseInt(split2[1])>=temp2){
   temp2=Integer.parseInt(split2[1])+1;
   }
   if(Integer.parseInt(split2[1])==0){
   temp2=1;
   }
    }
}

if(temp2<=10){
myFileName = productname+"_0"+temp2;
}else{
myFileName = productname+"_"+temp2;
}

�q�部分调用一个方法，��d��目录里的文�g名，�q��新按�?1�?2�?3的顺序命名�?br /> 获取目录里的文�g名的�c�：

import java.io.File;
import java.io.FilenameFilter;
import java.util.Arrays;
import java.util.Comparator;
import java.util.regex.Pattern;
public class DirList {
public String[] list(String thepath) {
  File path = new File(thepath);
  String[] list;
  list = path.list();
  Arrays.sort(list, new AlphabeticComparator());
  return list;
}
}

class DirFilter implements FilenameFilter {
private Pattern pattern; public DirFilter(String regex) {
  pattern = Pattern.compile(regex); }
public boolean accept(File dir, String name) {
  // Strip path information, search for regex:
  return pattern.matcher(new File(name).getName()).matches();
  }
}

class AlphabeticComparator implements Comparator {
public int compare(Object o1, Object o2) {
  String s1 = (String) o1;    String s2 = (String) o2;
  return s1.toLowerCase().compareTo(s2.toLowerCase());
  }
}

lzj520 2008-08-13 11:57 发表评论

lzj520 — Mon, 28 Jul 2008 04:11:00 GMT
                    class="com.pixel.hibernate.HomeAloneAuthenticationProcessingFilter">




            /back/login.jsp?login_error=1


            /


            /j_acegi_security_check




      /back/login.jsp?login_error=1





package com.pixel.hibernate;

import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.acegisecurity.Authentication;
import org.acegisecurity.AuthenticationException;
import org.acegisecurity.ui.webapp.AuthenticationProcessingFilter;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class HomeAloneAuthenticationProcessingFilter extends
   AuthenticationProcessingFilter {
private static final Log logger = LogFactory
    .getLog(HomeAloneAuthenticationProcessingFilter.class);

@Override
protected void onSuccessfulAuthentication(
    HttpServletRequest arg0, HttpServletResponse arg1,
    Authentication arg2) throws IOException {
   logger.info("login successful:"
     + arg0.getParameter("j_username"));
   arg0.getSession().setAttribute("userName",
     arg0.getParameter("j_username"));
   super.onSuccessfulAuthentication(arg0, arg1, arg2);
}

@Override
protected void onPreAuthentication(HttpServletRequest arg0,
    HttpServletResponse arg1) throws AuthenticationException,
    IOException {
   // 验证码验�?br />    String randomCode1 = (String) arg0.getSession().getAttribute(
     "rand");
   String randomCode2 = (String) arg0.getParameter("rand");
   if (!randomCode2.equals(randomCode1)) {
    throw new ValidaAuthenticationException(
      "valida code error");
   }
   super.onPreAuthentication(arg0, arg1);
}
}

class ValidaAuthenticationException extends AuthenticationException {
/**
*
*/
private static final long serialVersionUID = -8369047599309913998L;

public ValidaAuthenticationException(String arg0) {
   super(arg0);
}
}

lzj520 2008-07-28 12:11 发表评论

dom��d��xml

lzj520 — Fri, 25 Jul 2008 09:39:00 GMT

import org.w3c.dom.*;
import javax.xml.parsers.*;
import java.io.*;
public class Parse {
//Document可以看作是XML在内存中的一个镜�?那么一旦获取这个Document ��意味着可以通过�?br /> //内存的操作来实现对XML的操�?首先�W�一步获取XML相关的Document
   private Document doc=null;

public void init(String xmlFile) throws Exception{
   //很明显该�c�L��一个单�?先获取��生DocumentBuilder工厂
   //的工�?在通过�q�个工厂产生一个DocumentBuilder,
   //DocumentBuilder��是用来产生Document�?br />    DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();
   DocumentBuilder db=dbf.newDocumentBuilder();
   //�q�个Document��是一个XML文�g在内存中的镜�?br />    doc=db.parse(new File(xmlFile));
}
//该方法负责把XML文�g的内�Ҏ��C�出�?br />
public void viewXML(String xmlFile) throws Exception{
   this.init(xmlFile);
   //在xml文�g�?只有一个根元素,先把根元素拿出来看看
   Element element=doc.getDocumentElement();
   System.out.println("根元素�ؓ:"+element.getTagName());

   NodeList nodeList=doc.getElementsByTagName("story");
   System.out.println("story节点铄��长度:"+nodeList.getLength());

   Node fatherNode=nodeList.item(0);
   System.out.println("父节点�ؓ:"+fatherNode.getNodeName());

   //把父节点的属性拿出来
   NamedNodeMap attributes=fatherNode.getAttributes();

//   for(int i=0;i //    Node attribute=attributes.item(i);
//    System.out.println("person的属性名�?"+attribute.getNodeName()+" 相对应的属性��gؓ:"+attribute.getNodeValue());
//   }

   NodeList childNodes = fatherNode.getChildNodes();
   System.out.println(childNodes.getLength());
   for(int j=0;j<2;j++){
    Node childNode=childNodes.item(j);
    //如果�q�个节点属于Element ,再进行取�?br />     if(childNode instanceof Element){
     //System.out.println("子节点名�?"+childNode.getNodeName()+"相对应的��gؓ"+childNode.getFirstChild().getNodeValue());
     System.out.println("子节点名�?"+childNode.getNodeName()+"相对应的��gؓ"+childNode.getFirstChild().getNodeValue());
    }
   }

}

public static void main(String[] args)throws Exception{
   Parse parse=new Parse();

//我的XML文�g
   parse.viewXML("D:/Tomcat 5.5/webapps/ROOT/story/best_story.xml");
}
}

lzj520 2008-07-25 17:39 发表评论

tomcat6+apache_2.2.9均衡负蝲

lzj520 — Sun, 13 Jul 2008 14:11:00 GMT
下蝲apache
http://apache.mirror.phpchina.com/httpd/httpd-2.2.9-win32-src.zip
下蝲mod_jk-1.2.26-httpd-2.2.4.so
http://apache.mirror.phpchina.com/tomcat/tomcat-connectors/jk/binaries/win32/jk-1.2.26/
下蝲tomcat6
下蝲JDK6
然后配置好环境�?br />
步骤1�Q?/strong>
安装apache�Q�然后测�?/span>http://localhost�Q?0/�Q�可以显�C�的话表�C�apache安装成功�?br /> 把mod_jk-1.2.26-httpd-2.2.4.so 改名为mod_jk�Q��ƈ复制到apache的安装目录的modules下�?br />
步骤2�Q?/strong>
修改apache�Q�conf目录下的httpd文�g�Q�增加以下内容（�Ҏ��自己的情况增减）

LoadModule jk_module modules/mod_jk.so
JkWorkersFile "C:\Program Files/Apache Software Foundation/Apache2.2/conf/workers.properties"
JkLogFile "C:\Program Files/Apache Software Foundation/Apache2.2/logs/mod_jk.log"
JkLogLevel severe

JkMount /*.do controller
JkMount /*.jsp controller
JkMount /WEB-INF/* controller
JkMount /lzj1/*.do controller

步骤3�Q?/strong>
在conf目录下增加uriworkermap.properties文�g
再增加workers.properties文�g�Q�增加或修改以下内容�Q�根据自��q��情况而定�Q?br />
workers.tomcat_home="E:\java\apache-tomcat-6.0.16\apache-tomcat-6.0.16"
workers.java_home="C:\Program Files\Java\jdk1.6.0_06"

worker.list=controller,tomcat1,tomcat2

worker.tomcat1.host=192.168.10.55
worker.tomcat1.port=8009

worker.tomcat2.port=8009
worker.tomcat2.host=localhostworker.controller.type=lb

worker.controller.balanced_workers=tomcat1,tomcat2
worker.controller.sticky_session=1
worker.ajp13.lbfactor=1

worker.ajp13.port=8009
worker.ajp13.host=localhost
worker.ajp13.type=ajp13

worker.ajp13.lbfactor=1

�q�样��完成了均衡负蝲的配�|��?br />
步骤4�Q?br /> 配置tomcat6

再配�|�tomcat6集群的session复制。打开tomcat6�Q�conf目录下的server.xml文�g。把集群配置的注释去掉。变�?br />

                 channelSendOptions="8">

                             expireSessionsOnShutdown="false"
                   notifyListenersOnReplication="true"/>


                                    address="228.0.0.4"
                        port="45564"
                        frequency="500"
                        dropTime="3000"/>
                                  address="auto"
                      port="4000"
                      autoBind="100"
                      selectorTimeout="5000"
                      maxThreads="6"/>








                           filter=""/>


                              tempDir="/tmp/war-temp/"
                    deployDir="/tmp/war-deploy/"
                    watchDir="/tmp/war-listen/"
                    watchEnabled="false"/>





步骤5�Q?/strong>
建立一个页面index.jsp�Q?br />
/*<%
   System.out.println("===========================");
%>
*/

<%@ page contentType="text/html; charset=GBK" %>
<%@ page import="java.util.*" %>
Cluster App Test

Server Info:
<%
out.println(request.getLocalAddr() + " : " + request.getLocalPort()+"
");%>
<%
out.println("
ID " + session.getId()+"
");
// 如果有新�?Session 属性设�|?br /> String dataName = request.getParameter("dataName");
if (dataName != null && dataName.length() > 0) {
     String dataValue = request.getParameter("dataValue");
     session.setAttribute(dataName, dataValue);
}
out.print("Session 列表");
Enumeration e = session.getAttributeNames();
while (e.hasMoreElements()) {
     String name = (String)e.nextElement();
     String value = session.getAttribute(name).toString();
     out.println( name + " = " + value+"
");
         System.out.println( name + " = " + value);
   }
%>

    名称:


    �?





其web.xml配置

步骤6�Q?br /> 最后��用jmeter�q�行一下简单测试，讄��40个�ƈ发用��P��试的IP地址�?92.168.10.66�Q�apache�Q��?92.168.10.66�Q�tomcat2�Q��?92.168.10.55�Q�tomcat1�Q�其中tomcat2是有�U�接入，tomcat2是无�U�接入。测试页面�ؓ/lzj1/index.jsp�?br /> 可以看看�l�果�Q?br /> tomcat1�Q?/strong>

Thread Name: �U�程�l?1-1
Sample Start: 2008-07-13 22:32:42 CST
Load time: 2532
Latency: 2532
Size in bytes: 401
Sample Count: 1
Error Count: 0
Response code: 200
Response message: OK

Response headers:
HTTP/1.1 200 OK
Date: Sun, 13 Jul 2008 14:32:42 GMT
Server: Apache/2.2.9 (Win32) mod_jk/1.2.26
Set-Cookie: JSESSIONID=6A15C0175A2E1EC8E0930FAF0C28ADC9.tomcat1; Path=/lzj1
tomcat2�Q?br />
Thread Name: �U�程�l?1-3
Sample Start: 2008-07-13 22:32:44 CST
Load time: 4
Latency: 4
Size in bytes: 401
Sample Count: 1
Error Count: 0
Response code: 200
Response message: OK

Response headers:
HTTP/1.1 200 OK
Date: Sun, 13 Jul 2008 14:32:44 GMT
Server: Apache/2.2.9 (Win32) mod_jk/1.2.26
Set-Cookie: JSESSIONID=2FF347B788690651E7DADE1A040EE94C.tomcat2; Path=/lzj1
可以从结果看到检��到的服务器是Apache/2.2.9 (Win32) �Q��用了mod_jk/1.2.26�Q��ƈ且tomcat1的反应时间明显慢于tomcat2�Q�这是由于这里的tomcat1的网�l�是使用的是无线接入的缘故�?br />

lzj520 2008-07-13 22:11 发表评论

java.lang.SecurityException

lzj520 — Tue, 08 Jul 2008 15:32:00 GMT
�q�行junit4�Ӟ��报错�Q�在VM里面加入参数�Q?verbose:class�Q�发现是以下�c�L��错�?br />
java.lang.SecurityException: class "junit.framework.JUnit4TestCaseFacade"'s signer information does not match signer information of other classes in the same package
at java.lang.ClassLoader.checkCerts(Unknown Source)
at java.lang.ClassLoader.preDefineClass(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at org.junit.internal.runners.OldTestClassRunner$OldTestClassAdaptingListener.asDescription(OldTestClassRunner.java:41)
at org.junit.internal.runners.OldTestClassRunner$OldTestClassAdaptingListener.startTest(OldTestClassRunner.java:31)
at junit.framework.TestResult.startTest(TestResult.java:151)
at junit.framework.TestResult.run(TestResult.java:103)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.junit.internal.runners.OldTestClassRunner.run(OldTestClassRunner.java:76)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

�׃��用的是myeclipse的junit4包，后来自己��M��了一个，�l�果��׃��会报错了�?

lzj520 2008-07-08 23:32 发表评论

lzj520 — Sat, 05 Jul 2008 01:59:00 GMT
//@author lzj
//lzj:�Ҏ��条�g动态查�?br /> public List findPhotoAllDyn(String isshow,String classname,String userid,String start, String end,String phototypeid,String pagenum){
  StringBuffer hqlStr = new StringBuffer("select pt.STypename,pc.IPhotoclass,pc.SNames,pc.SUsername,pc.IStatus,pc.IShow ,pc.DAdddate ,pt.ITypeid,count(pr) from TPhototype pt right outer join pt.TPhotoclasses pc left join ");
   try{
    if(Integer.parseInt(isshow)==0)hqlStr.append("pc.TPicturescores pr Where pc.IShow=0 ");
    if(Integer.parseInt(isshow)==1)hqlStr.append("pc.TShowopuses pr Where pc.IShow=1 ");
    if(Integer.parseInt(isshow)==-1)hqlStr.append("pc.TPicturescores pr Where pc.IShow is not null ");
    }catch(Exception e){
      hqlStr.append("pc.TPicturescores pr Where pc.IShow=0 ");
    }
   if(classname!="")hqlStr.append("and pc.SNames=:sn ");
   if(userid!="")hqlStr.append("and pc.SUsername =:SUsername ");
   if(start!="")hqlStr.append("and pc.DAdddate between :Start ");
   if(end!="")hqlStr.append("and :End ");
   if(phototypeid!="")hqlStr.append("and pt.ITypeid = :ITypeid ");
   hqlStr.append("group by pt.STypename,pc.IPhotoclass,pc.SNames,pc.SUsername,pc.IStatus,pc.IShow ,pc.DAdddate ,pt.ITypeid order by count(pr) desc ");
   Session session =this.getSession();
   Query query = session.createQuery(hqlStr.toString());
   if(classname!="")query.setString("sn",classname);
   if(userid!="")query.setString("SUsername",userid);
   if(phototypeid!="")query.setString("ITypeid",phototypeid);
   SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
   if(start!="")
    try {
     query.setDate("Start",sdf.parse(start));
    } catch (ParseException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
   if(end!="")
    try {
     query.setDate("End",sdf.parse(end));
    } catch (ParseException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
   query.setCacheable(true);
   if (pagenum == null){
        /*如果pagenum是空�Q�则数据从第一条开�?/
          query.setFirstResult(0);
        /*讄��查询开始的�W�几条数据，�q�里是从�W?条开�?/
          query.setMaxResults(PageSize);
        /*讄��查询数据条数*/
          }else{
           try{
           Integer p = (Integer.valueOf(pagenum)-1) * PageSize;
           query.setFirstResult(p);
           query.setMaxResults(PageSize);
           }catch (Exception e){
            query.setFirstResult(0);
         query.setMaxResults(PageSize);
           }
          }
   List result = query.list();
     List templist = new ArrayList();
     for (Iterator it = result.iterator();it.hasNext();){
       Map mm = new HashMap();
       Object[] row=(Object[])it.next();
        Query query2 =session.createQuery("from TPopularshow ps where ps.SUpid = :s");
        query2.setString("s", ((Long)row[1]).toString());
        query2.setCacheable(true);
        List result2 = query2.list();
        Iterator it2 = result.iterator();
         if (query2.list().size()>0){
          mm.put("ps", "yes");
         } else{
          mm.put("ps", "");
         }
       mm.put("STypename", (String)row[0]);
       mm.put("IPhotoclass", (Long)row[1]);
       mm.put("SNames", (String)row[2]);
       mm.put("SUsername", (String)row[3]);
       //mm.put("IStatus",(Long)row[4]);
       if((Long)row[4]==null){
        mm.put("IStatus2","");
       }else if((Long)row[4]==1){
        mm.put("IStatus","半开�?);
        mm.put("IStatus2",(Long)row[4]);
       }else if((Long)row[4]==2){
       mm.put("IStatus","开�?);
       mm.put("IStatus2",(Long)row[4]);
       }else if((Long)row[4]==0){
        mm.put("IStatus","不开�?);
        mm.put("IStatus2",(Long)row[4]);
       }
       if((Long)row[5]==0){
        mm.put("IShow", "普通相�?);
        mm.put("ptype", 1);
        mm.put("IShowb", 3);
       }else if((Long)row[5]==1){
        mm.put("IShow", "�Ҏ��相册");
        mm.put("ptype", 2);
        mm.put("IShowb", 4);
       }
       //mm.put("IShow", (Long)row[5]);
       mm.put("DAdddate", (Date)row[6]);
       mm.put("Count", (Long)row[8]);
       templist.add(mm);
     }
     session.close();
     return templist;
     }

lzj520 2008-07-05 09:59 发表评论

使用HQL的时候，dialect��D��了oracle的right join 或者full join出错

lzj520 — Sat, 28 Jun 2008 02:09:00 GMT
在oracle里��用right join 或者full join的HQL语句都会出错�Q�不�q��用inner join和left join都能够通过�?br /> 出的错误是提�C�oracle不支持这�U�join�c�d��?br />
后来��查，发现dialect的语句是
org.hibernate.dialect.Oracle9iDialect
然后试着换成
org.hibernate.dialect.Oracle9Dialect

之后一切顺利通过�?br />

lzj520 2008-06-28 10:09 发表评论

hibernate多表操作复习2

lzj520 — Thu, 26 Jun 2008 15:10:00 GMT
�l�箋之前那个复习�Q��l�那3张表�Q�在此前已经可以联��插入数据�Q�现在来联�񔋂�索出3张表的数据，假设要求查出名字�?#8220;lzj"的学生在3张表里的所有记录。��用inner join操作�?br />
TstudentDAO�Q?br />
  public List findall(String name){
  Session session =this.getSession();
  Transaction tx = null;
  Query query = session.createQuery("select t.name,t.email,s.name,tt.times from TStudent t join t.TSubjectses s join t.TTests tt where t.name=:name");
  query.setString("name", name);
  List result = query.list();
    List templist = new ArrayList();
    for (Iterator it = result.iterator();it.hasNext();){
      Object[] row=(Object[])it.next();
      Map mm = new HashMap();
      mm.put("name", (String)row[0]);
      mm.put("email", (String)row[1]);
      mm.put("sname", (String)row[2]);
      mm.put("times", (Integer)row[3]);
      templist.add(mm);
     }
    return templist;
    }

action里只需要一句话�Q?br /> List results = tstudentDAO.findall("lzj");
�q�将�l�果�q�回�l�struts的jsp��面�Q?br /> if(results!=null){
   HttpSession session=request.getSession();
         session.setAttribute("results",results);
         return mapping.findForward("ok");

jsp��面接受�Q��用struts标签�Q?br />












lzj520 2008-06-26 23:10 发表评论

hibernate多表操作复习

lzj520 — Sun, 22 Jun 2008 15:42:00 GMT
最�q�在熟习新公司的��目�Q�看到里面�ؕ麻麻的SQL语句�Q�if - else语句��头大，虽然�q�个��目有用hibernate�Q�但是感觉上没有�q�用到hibernate的优势，只是用了一些hql语句和hibernate的数据库分页。没有�g�q�加载，没有联��操作�Q�表也没有徏立约束，甚至没有索引。现在该��目已经��是做完了，我刚刎ͼ�要去接手�q�修攚w��面的内容�Q�真是很痛苦的，最痛苦的还是那512的内存。。�?br />
在一开始徏立数据库表时�Q�徏立好�U�束�Q�徏立好索引�Q�表的设计合理，之后的一切都会是很美好的。比如有3张表�Q?br />
学生�Q�t_student
id
name
email

�U�目�Q�t_subjects
id
subjects name
student_id

考试�Q�t_test
id
student_id
subjects_id
month
times

学生表和�U�目表，学生表和考试表，�U�目和考试都是一对多关系。徏立好索引和约束，然后由hibernate自动生成hbm文�g�Q��ƈ在学生表、科目表的hbm文�g里设�|�inverse="true" cascade="all" lazy="true"�?br />
��大致配�|�好了，然后假如要录入这样一条涉及到3个表的记录：
学生姓名、email、科目名�U�、月份、考试�ơ数
��只需要写一个简单的�Ҏ��调用session.save��可以保存所有内容了�Q?br />
public ActionForward execute(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response) {
  DynaActionForm student_registerForm = (DynaActionForm) form;// TODO Auto-generated method stub
//receive from actionform
  String strname = student_registerForm.getString("name");
  String stremail = student_registerForm.getString("email");
  String strsubjectname = student_registerForm.getString("subjectname");
  int intmonth = Integer.parseInt(student_registerForm.getString("month"));
  int inttimes = Integer.parseInt(student_registerForm.getString("times"));
  TStudent tStudent = new TStudent();
  tStudent.setName(strname);
  tStudent.setEmail(stremail);
  //set the subject
  TSubjects Tsubjects = new TSubjects();
  Tsubjects.setTStudent(tStudent);
  Tsubjects.setName(strname);
  tStudent.getTSubjectses().add(Tsubjects);
  //set the test
  TTest Ttest = new TTest();
  Ttest.setTStudent(tStudent);
  Ttest.setMonth(intmonth);
  Ttest.setTimes(inttimes);
  tStudent.getTTests().add(Ttest);
  //insert all
  tstudentDAO.insert(tStudent);
  return mapping.findForward("ok");
}

tstudentDAO只有一个操作：
session.save(tStudent);

之后可以看到3个表里的记录都同时增加好了�?br />

lzj520 2008-06-22 23:42 发表评论

亚洲欧洲日产国码无码久久99 ,亚洲国产精品日韩在线观看,亚洲国产模特在线播放

091118求杨辉三角中的项

090310 Exercise 1.12 Pascal's triangle

090310 RHEL 下安装带mod_prox模块的apache

090310 RHEL 下挂载windows文�g目录

090310 Exercise 1.11. recursive process and iterative

090306 Exercise 1.8 cube-root procedures

090306 Exercise 1.6 Square Roots by Newton's Method

090305 Exercise 1.3 returns the sum of the squares of the two larger numbers

090213 集群内用jsessionid�׃�nsession

090211 使用imagemagick扚w��改变囄������寸

090208 ubuntu 安装tomcat 6

090119 升��到swfupload 2.2.0

081123 ubuntu安装jdk6

081122 ubuntu安装scim

081117 使用POI���查询记录输入到excel

081114 分页昄���json数据

081108 GWT分页昄���数据

081102 struts2 + swfupload 扚w��上传囄���

dom��d��xml

tomcat6+apache_2.2.9均衡负蝲

java.lang.SecurityException

使用HQL的时候，dialect��D��了oracle的right join 或者full join出错

hibernate多表操作复习2

hibernate多表操作复习

090211 使用imagemagick扚w��改变囄��寸

081117 使用POI��查询记录输入到excel

081114 分页昄��json数据

081108 GWT分页昄��数据

081102 struts2 + swfupload 扚w��上传囄��