少年阿賓

那些青春的歲月

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//這里面主要是由于銀聯的手機支付用到了一個付款的轉換方式問題，當調用支付寶付款的時候，比如一分錢格式就是我們普通用的格式：0.01，而銀聯確要把格式轉化為000000000001（銀聯要求是12位）這種格式的，最后一位是分，然后向前依次是角，元，十元，百元，相信不用我說，你已經懂了吧。所以這里就需要一個轉換，為了應對像1000，1000.00，1000.0這種傳過來的格式的數據，特做一下轉換，然后傳給銀聯進行支付。

package com.abin.lee.collection.inner;

public class ConsumeFinance {

public static enum Currency{

CHINARMB("chinarmb"),DOLLAR("dollar"),HK("hk");

private Currency(String textVal){

this.textVal=textVal;

}

private String textVal;

public String toString(){

return textVal;

}

public static String ConsumeProcess(String money,Currency currency){

System.out.println("currentcy="+currency);

String flag=null;

if(currency.equals(Currency.CHINARMB)){

ConsumeFinance.ChinaProcess chinaProcess=new ConsumeFinance.ChinaProcess();

flag=chinaProcess.chinaChange(money, currency);

}

return flag;

}

public static String ConsumeProcessReturn(String money,Currency currency){

System.out.println("currentcy="+currency);

String flag=null;

if(currency.equals(Currency.CHINARMB)){

ConsumeFinance.ChinaReturn chinaReturn=new ConsumeFinance.ChinaReturn();

flag=chinaReturn.chinaReChange(money, currency);

}

return flag;

}

public static class ChinaProcess{

private static String status=null;

public static String chinaChange(String money,Currency currency){

int point=money.lastIndexOf(".");

if(point==-1){

StringBuffer stb=new StringBuffer();

int len=money.length();

int lon=10-len;

for(int i=0;i<lon;i++){

stb.append("0");

}

stb.append(money);

stb.append("00");

status=stb.toString().intern();

}

if(point>0){

int len=money.indexOf(".");

int chn=money.length()-len-1;

switch(chn){

//先判斷money格式為100.0這種格式的，小數點后面有一位小數點的情況

case 1:

StringBuffer stb=new StringBuffer(money);

stb.deleteCharAt(len);

int lend=stb.length();

StringBuffer sb=new StringBuffer();

for(int i=0;i<12-lend;i++){

sb.append("0");

}

sb.append(stb.toString());

status=sb.toString().intern();

//先判斷money格式為100.01這種格式的，小數點后面有兩位小數點的情況

case 2:

money=money.replace(".", "");

int lende=money.length();

String connect="";

for(int i=0;i<12-lende;i++){

connect+="0";

}

status=connect+money;

}

return status;

}

//把000000001001轉化為10.01這種格式

public static class ChinaReturn{

private static String status=null;

public static String chinaReChange(String money,Currency currency){

int change=money.length();

int num=0;

for(int i=0;i<change;i++){

int value=Integer.valueOf(String.valueOf(money.charAt(i)));

if(value>0){

num=i;

break;

}

money=money.substring(num);

if(num==10){

status="0."+money;

}

if(num==11){

status="0.0"+money;

}

if(num<10){

System.out.println(money.length());

StringBuffer stb=new StringBuffer(money);

stb.insert(money.length()-2, ".");

status=stb.toString().intern();

}

return status;

}

public static void main(String[] args) {

Currency currency=Currency.CHINARMB;

String money="000000001001";

String result=ConsumeProcessReturn(money, currency);

// String result=ConsumeProcess(money, currency);

System.out.println("result="+result);

}

posted @ 2012-09-02 00:03 abin 閱讀(1869) | 評論 (0) | 編輯收藏

Java ThreadLocal

//ThreadLocal第一種用法：

//建表：

-- Create table

create table USERBEAN

(

ID NVARCHAR2(40) not null,

USERNAME NVARCHAR2(40),

PASSWORD NVARCHAR2(40)

)

tablespace USERS

pctfree 10

initrans 1

maxtrans 255

storage

(

initial 64K

minextents 1

maxextents unlimited

);

-- Create/Recreate primary, unique and foreign key constraints

alter table USERBEAN

add constraint SSSID primary key (ID)

using index

tablespace USERS

pctfree 10

initrans 2

maxtrans 255

storage

(

initial 64K

minextents 1

maxextents unlimited

);

package com.abin.lee.collection.threadlocal;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;

public class MyThreadLocal {

//使用ThreadLocal保存Connection變量

public static ThreadLocal<Connection> threadLocal = new ThreadLocal<Connection>();

private static final String URL = "jdbc:oracle:thin:@localhost:1521:XE";

private static final String USERNAME = "abing";

private static final String PWD = "abing";

public static Connection getConnection() {

Connection connection = null;

String url = "";

//如果connThreadLocal沒有本線程對應的Connection創建一個新的Connection，并將其保存到線程本地變量中。

if (threadLocal.get() == null) {

try {

Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();

connection = DriverManager.getConnection(URL, USERNAME, PWD);

threadLocal.set(connection);

} catch (Exception e) {

e.printStackTrace();

}

}else {

return threadLocal.get();//直接返回線程本地變量

}

return connection;

}

public static void remove() {

threadLocal.remove();

}

package com.abin.lee.collection.threadlocal;

import java.io.Serializable;

public class UserBean implements Serializable{

private String id;

private String username;

private String password;

public String getId() {

return id;

}

public void setId(String id) {

this.id = id;

}

public String getUsername() {

return username;

}

public void setUsername(String username) {

this.username = username;

}

public String getPassword() {

return password;

}

public void setPassword(String password) {

this.password = password;

}

//測試代碼

package com.abin.lee.collection.threadlocal;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.util.ArrayList;

import java.util.List;

public class OracleOperate {

public static List<UserBean> findAll(){

Connection conn=null;

PreparedStatement ps=null;

ResultSet rs=null;

String sql="select * from userbean order by id desc";

List<UserBean> list=new ArrayList<UserBean>();

UserBean user=null;

try {

conn=MyThreadLocal.getConnection();

ps=conn.prepareStatement(sql);

rs=ps.executeQuery();

while (rs.next()&&rs!=null) {

user=new UserBean();

user.setId(rs.getString("id"));

user.setUsername(rs.getString("username"));

user.setPassword(rs.getString("password"));

list.add(user);

}

} catch (Exception e) {

e.printStackTrace();

}

return list;

}

public static void main(String[] args) {

List<UserBean> list=findAll();

for(UserBean lst:list){

System.out.println("id="+lst.getId());

System.out.println("username="+lst.getUsername());

System.out.println("id="+lst.getPassword());

}

}

//ThreadLocal第二種用法：

package com.abin.lee.collection.threadlocal;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;

public class MyThreadLocal {

private static final String URL = "jdbc:oracle:thin:@localhost:1521:XE";

private static final String USERNAME = "abing";

private static final String PWD = "abing";

//使用ThreadLocal保存Connection變量

public static ThreadLocal<Connection> threadLocal = new ThreadLocal<Connection>(){

protected Connection initialValue() {

Connection connection = null;

//如果connThreadLocal沒有本線程對應的Connection創建一個新的Connection，并將其保存到線程本地變量中。

if (connection == null) {

try {

Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();

connection = DriverManager.getConnection(URL, USERNAME, PWD);

} catch (Exception e) {

e.printStackTrace();

}

return connection;

}

};

public static Connection getConnection() {

return threadLocal.get();

}

public static void remove() {

threadLocal.remove();

}

package com.abin.lee.collection.threadlocal;

import java.io.Serializable;

public class UserBean implements Serializable{

private String id;

private String username;

private String password;

public String getId() {

return id;

}

public void setId(String id) {

this.id = id;

}

public String getUsername() {

return username;

}

public void setUsername(String username) {

this.username = username;

}

public String getPassword() {

return password;

}

public void setPassword(String password) {

this.password = password;

}

package com.abin.lee.collection.threadlocal;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.util.ArrayList;

import java.util.List;

public class OracleOperate {

public static List<UserBean> findAll(){

Connection conn=null;

PreparedStatement ps=null;

ResultSet rs=null;

String sql="select * from userbean order by id desc";

List<UserBean> list=new ArrayList<UserBean>();

UserBean user=null;

try {

conn=MyThreadLocal.getConnection();

ps=conn.prepareStatement(sql);

rs=ps.executeQuery();

while (rs.next()&&rs!=null) {

user=new UserBean();

user.setId(rs.getString("id"));

user.setUsername(rs.getString("username"));

user.setPassword(rs.getString("password"));

list.add(user);

}

} catch (Exception e) {

e.printStackTrace();

}

return list;

}

public static void main(String[] args) {

List<UserBean> list=findAll();

for(UserBean lst:list){

System.out.println("id="+lst.getId());

System.out.println("username="+lst.getUsername());

System.out.println("id="+lst.getPassword());

}

posted @ 2012-09-01 17:03 abin 閱讀(457) | 評論 (0) | 編輯收藏

Java Volatile操作多線程

package com.abin.lee.collection.volatiler;

public class MyThread implements Runnable{

private volatile boolean flag=false;

public void run() {

while(!flag){

try {

System.out.println("before");

Thread.sleep(3000);

System.out.println("after");

} catch (Exception e) {

e.printStackTrace();

}

flag=true;

}

public void setDone(boolean flag){

this.flag=flag;

}

測試代碼：

package com.abin.lee.collection.volatiler;

public class MyVolatileOne {

public static void main(String[] args) {

MyThread myThread=new MyThread();

Thread thread=new Thread(myThread);

thread.start();

}

posted @ 2012-09-01 15:56 abin 閱讀(301) | 評論 (0) | 編輯收藏

Java volatile的用法

package com.abin.lee.collection.singleton;
/**
* 雙重檢查加鎖單例模式
* @author abin
* 這個單例模式寫法可以大大減少getInstance的時間消耗！
*/
public class SingletonOne {
/**
     * volatile關鍵詞確保：當singleton變量被初始化成SingletonOne實例時，多個線程正確地處理singleton變量
     */
private volatile static SingletonOne singleton=null;
public SingletonOne(){}
public static SingletonOne getInstance(){
  if(null==singleton){//檢查實例，如果不存在就進入同步區塊
   synchronized (SingletonOne.class) {//注意，只有第一次才徹底執行這里的代碼
    if(null!=singleton){
     singleton=new SingletonOne();
    }
   }
  }
  return singleton;
}
}

package com.abin.lee.collection.singleton;

public class SingletonTwo {
/**
* volatile關鍵詞確保：當uniqueInstance變量被初始化成Singleton實例時，
* 多個線程正確地處理uniqueInstance變量
*/
private volatile static SingletonTwo singleton = new SingletonTwo();

private SingletonTwo() {
}

public static SingletonTwo getInstance() {
return singleton;
}
}

posted @ 2012-09-01 00:27 abin 閱讀(660) | 評論 (0) | 編輯收藏

js中控制checkbox的選擇以及table的顯示與隱藏

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script type="text/javascript">
    function checkAll() {
        var m = document.getElementsByName("all")[0];
        var s = document.getElementsByName("check");

        if (m.checked) {

            for ( var i = 0; i < s.length; i++) {
                s[i].checked = true;
            }
        } else {
            for ( var i = 0; i < s.length; i++) {
                s[i].checked = false;
            }

        }
    }

    function checkEvery() {
        var m = document.getElementsByName("all")[0];
        var s = document.getElementsByName("check");

        for ( var i = 0; i < s.length; i++) {
            if (s[i].checked&&m.checked) {
                m.checked = true;
            } else {
                m.checked = false;
            }
        }

    }

    function turn() {
        with (document) {
            var m = getElementById("change");
            var n = getElementById("table");
            if (m.value == "收縮") {
                n.style.display = "none";
                m.value = "展開";
            } else {
                n.style.display = "block";
                m.value = "收縮";
            }
        }
    }
</script>
</head>
<body>
    <table border="1" align="center" width="60%" id="table1">
        <tr>
            <td><input type="checkbox" name="all" onclick="checkAll();">全選</td>
            <td><input type="button" value="收縮" id="change"
                onclick="turn();"></td>
        </tr>
    </table>
    <%
        int number = Integer.parseInt(request.getParameter("number"));
    %>

    <table border="1" align="center" width="60%" id="table">
        <%
            for (int i = 0; i < number; i++) {
        %>
        <tr>
            <td><input type="checkbox" name="check" onclick="checkEvery()"></td>
            <td><%=i%></td>
        </tr>
        <%
            }
        %>
    </table>
</body>
</html>

posted @ 2012-08-30 19:50 abin 閱讀(2025) | 評論 (2) | 編輯收藏

js獲取復選框的值，及小技巧

<script language=javascript>
function c()
{
   var c=document.getElementsByName("aaa");//getElement s ByName忘掉了一直沒注意郁悶死
   for( var i=0;i<c.length;i++)
   {
    if(c[i].checked)
    {
     alert(c[i].value);
    }
   }
}
function d()
{
   var check=document.getElementsByName("aaa");
   for(i=0;i<check.length;i++)
   {
    //三元運算符，不知道為什么我用非（~）運算符，只能全選，只有選這個用了
    check[i].checked=check[i].checked?false:true;
   }
}
function e()
{
   var check=document.getElementsByName("aaa");
   for(i=0;i<check.length;i++)
   {
    check[i].checked=true;
   }

}
</script>

<input type="checkbox" name="aaa" value="1" />1
<input type="checkbox" name="aaa" value="2" />2
<input type="checkbox" name="aaa" value="3" />3
<input type="checkbox" name="aaa" value="4" />4
<input type="checkbox" name="aaa" value="5" />5
<input type="checkbox" name="aaa" value="6" />6
<input type="button" value="選中查看" onclick="c()"/>
<input type="button" value="反選" onclick="d()" />
<input type="button" value="全選" onclick="e()" />
<br />

如果需要將復選框選中的值操作，可在循環里面加字符串拼接，每個用逗號隔開，在js里頁面跳轉，憑借的字符串如果是數組，作為url傳遞的參數，接手后不是數組，是字符串形式的，只要用函數分割就ok了。

posted @ 2012-08-30 17:45 abin 閱讀(509) | 評論 (0) | 編輯收藏

Dom4j 創建和解析XML

package com.abin.lee.dom4j;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

public class CreateDom4j {
public static String createXml(){
  Document document=DocumentHelper.createDocument();
  Element school=document.addElement("school");
  Element teacher=school.addElement("teacher");
  Element student=teacher.addElement("student");
  student.addText("abin");
  Element boy=teacher.addElement("boy");
  boy.addText("han");
  Element girl=teacher.addElement("girl");
  girl.addText("xia");

  return document.asXML();
}

public static Map<String, String> parseXml(String xml){
  Map<String, String> map=new HashMap<String, String>();
  Document doc=null;
  try {
   doc=DocumentHelper.parseText(xml);
   Element school=doc.getRootElement();
   System.out.println("school Name="+school.getName());
   System.out.println("school Value="+school.getText());
   map.put(school.getName(), school.getText());

   Element teacher=school.element("teacher");
   map.put(teacher.getName(), teacher.getText());

   Element student=teacher.element("student");
   map.put(student.getName(), student.getText());

   Element boy=teacher.element("boy");
   map.put(boy.getName(), boy.getText());

   Element girl=teacher.element("girl");
   map.put(girl.getName(), girl.getText());
  } catch (Exception e) {
   e.printStackTrace();
  }
  return map;
}

public static Map<String, String> parseString(String xml){
  Map<String, String> map=new HashMap<String, String>();
  Document doc=null;
  try {
   doc=DocumentHelper.parseText(xml);
   Element school=doc.getRootElement();
   map.put(school.getName(), school.getText());

   Element teacher=school.element("teacher");
   map.put(teacher.getName(), teacher.getText());

   for(Iterator it=teacher.elementIterator();it.hasNext();){
    Element element=(Element)it.next();
    map.put(element.getName(), element.getText());
   }
  } catch (Exception e) {
   e.printStackTrace();
  }
  return map;
}
public static void main(String[] args) {
  String result=createXml();
  System.out.println("result="+result);
//  Map<String, String> map=parseXml(result);
//  for(Iterator it=map.entrySet().iterator();it.hasNext();){
//   Map.Entry entry=(Map.Entry)it.next();
//   System.out.println("entry name="+entry.getKey());
//   System.out.println("entry value="+entry.getValue());
//  }

  Map<String, String> map=parseString(result);
  for(Iterator it=map.entrySet().iterator();it.hasNext();){
   Map.Entry entry=(Map.Entry)it.next();
   System.out.println("entry name="+entry.getKey());
   System.out.println("entry value="+entry.getValue());
  }


}

}

http://hi.baidu.com/stevenjohn/item/aababd47077c0ce5dd0f6c78

posted @ 2012-08-29 22:45 abin 閱讀(691) | 評論 (0) | 編輯收藏

javascript實現表格動態增加刪除(二)

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>javascript實現表格動態增加刪除</title>

posted @ 2012-08-28 23:55 abin 閱讀(401) | 評論 (0) | 編輯收藏

javascript實現表格動態增加

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>javascript實現表格動態增加</title>

posted @ 2012-08-28 23:24 abin 閱讀(401) | 評論 (0) | 編輯收藏

javascript實現表格動態增加刪除(一)

  colname.innerHTML = document.getElementById("name1").value;
  colage.innerHTML = document.getElementById("age1").value;
  colbutton.innerHTML = '<input type="button" value="刪除" onclick="deleteRow('
    + (tb.rows.length - 1) + ')" />'
}
function deleteRow(index) {
  var tb = document.getElementById("mytable");
  tb.deleteRow(index);
}
</script>
<body>
<table id="mytable" border="1">
  <tr>
   <td>NAME</td>
   <td>AGE</td>
   <td>OPERATE</td>
  </tr>
</table>
<input type="text" name="name" id="name1" />
<input type="text" name="age" id="age1" />
<input type="button" value="PRESS" onclick="return addline();" />
</body>
</html>

posted @ 2012-08-28 23:21 abin 閱讀(826) | 評論 (0) | 編輯收藏

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