涓句緥錛氬綋闈㈡樉紺烘梾瀹㈠浘鐗囨椂錛屾垜浠彲浠ラ氳繃浼犻掓枃浠跺悕緇欎竴涓猻ervlet
鍦ㄥ叾涓ˉ鍏ㄥ浘鐗囩殑鍏ㄨ礬寰勶紝鐒跺悗鍐嶆樉紺哄埌欏甸潰
榪欐牱鍋氱殑濂藉錛屽湪欏甸潰鐪嬩笉鍒板浘鐗囩殑瀛樺偍鐩綍緇撴瀯錛屽叾涓ˉ鍏ㄥ叏璺緞鏃訛紝鎴戜滑鍙互鎶婂浘鐗囪礬寰勫仛鎴愬彲閰嶇疆鐨勬斁鍒?銆俻roperties涓紝榪欐牱浠ュ悗鐩綍鍙樹簡涔熶笉鐢ㄦ洿鏀逛唬鐮?br />
package com.hunau.liuyong;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;
public class ReadPropertyies {
public String getImage(String name) {
String tem = "defaule name";
try {
/*
* InputStream in =
* getClass().getResourceAsStream("test.properties"); Properties p =
* new Properties(); p.load(in); tem = p.get(name).toString();
*/
InputStream in = new FileInputStream("E:\\test\\test2.properties");
ResourceBundle rb = new PropertyResourceBundle(in);
tem = rb.getString(name);
} catch (Exception e) {
e.printStackTrace();
}
return tem;
}
public static void main(String[] args) {
ReadPropertyies rp = new ReadPropertyies();
String name = rp.getImage("name");
System.out.println("NAME=" + name);
}
}
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;
public class ReadPropertyies {
public String getImage(String name) {
String tem = "defaule name";
try {
/*
* InputStream in =
* getClass().getResourceAsStream("test.properties"); Properties p =
* new Properties(); p.load(in); tem = p.get(name).toString();
*/
InputStream in = new FileInputStream("E:\\test\\test2.properties");
ResourceBundle rb = new PropertyResourceBundle(in);
tem = rb.getString(name);
} catch (Exception e) {
e.printStackTrace();
}
return tem;
}
public static void main(String[] args) {
ReadPropertyies rp = new ReadPropertyies();
String name = rp.getImage("name");
System.out.println("NAME=" + name);
}
}
]]>
1 exp username/psw@TEST file=d:test.dmp full=y
2 exp username/psw@TEST file=d:test.dmp owner=(ly)
3 exp username/psw@TEST file= d:test.dmp tables=(grid1,grid2)
1鍏朵腑涓鏄皢Test錛堜笌鏌愪竴鏁版嵁搴撳搴旂殑oracle鏈嶅姟鍚嶏級鏁版嵁搴撹繘琛屾暣浣撳鍑?br />
2灝嗗睘浜庣敤鎴穕y鐨勬墍鏈夎〃瀵煎嚭2 exp username/psw@TEST file=d:test.dmp owner=(ly)
3 exp username/psw@TEST file= d:test.dmp tables=(grid1,grid2)
3灝嗚〃grid1錛屼笌grid2瀵煎嚭
d錛歵est.dmp鏄鍑虹殑鏂囦歡鍦板潃
imp鍛戒護錛?br />
1 imp system/psw@TEST file=d:test.dmp
2 imp system/psw@TEST full=y file=d:test.dmp ignore=y
3 imp system/psw@TEST file=d:test.dmp tables=(grid1)
ignore=y琛ㄧず濡傛灉琚鍏ョ殑鏁版嵁搴撲腑鏌愪釜琛ㄥ凡緇忓瓨鍦ㄥ氨蹇界暐涓嶅鍏ラ偅涓〃2 imp system/psw@TEST full=y file=d:test.dmp ignore=y
3 imp system/psw@TEST file=d:test.dmp tables=(grid1)
3琛ㄧず鍙鍏rid1榪欎釜琛?br />
鍦ㄥ鍏ュ鍑哄墠瑕佸厛嫻嬭瘯涓嬪搴旂殑鏁版嵁搴撴槸鍚︽槸閫氱殑錛歵nsping test鏉ユ祴璇曪紝鍚屾牱test鏄湇鍔″悕
鎵鏈夊懡浠ゅ彲鍦╟md涓嬫墽琛?br />
]]>
<script language="javascript" type="text/javascript">
var keys = {
"鍏抽敭瀛?":["http://www.url.com","#F4F9FF"],
"鍏抽敭瀛?":["http://www.url.com","#F4F9FF"],
"鍏抽敭瀛?":["http://www.url.com","#F4F9FF"]
}
document.body.innerHTML = document.body.innerHTML.replace(/(鍏抽敭瀛?|鍏抽敭瀛?|鍏抽敭瀛?)/g,function(){
var tem=arguments[0];
return tem.fontcolor(keys[u][1]).link(keys[u][0]);
}
);
</script>
]]>
* 璇存槑錛氱敓鎴愰獙璇佺爜servlet
* 緙栧啓鑰咃細LiuYong
* 鏃ユ湡錛?008 8.7
* 浣跨敤鏃剁洿鎺ユ妸servlet璁塊棶璺緞浼犵粰src灝卞ソ浜嗭紝濡傛灉瑕侀噸鏂頒駭鐢熷氨鎶奿mg鐨刼nclick鍔犱釜document.getElementById("imgId").src="<%=request.getContextPath() %>/servlet/RandomCodeServlet";灝眔k錛屼笉榪囩伀鐙愰噷闈笉琛屻傚懙鍛?br /> */
package com.hunau.liuyong;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Random;
import javax.imageio.ImageIO;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
/**
* <p>
* Title:鐢熸垚楠岃瘉鐮?br /> * <p>
* Description:鍦╯ervlet涓敓鎴愰獙璇佺爜
* </p>
*
*/
public class RandomCodeServlet extends HttpServlet {
// 楂樺害
private int width = 90;
// 瀹藉害
private int height = 20;
protected void service(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, java.io.IOException {
BufferedImage buffImg = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics2D g = buffImg.createGraphics();
Random random = new Random();
g.setColor(Color.WHITE);
g.fillRect(0, 0, width, height);
// 璁劇疆瀛椾綋
Font font = new Font("Times New Roman", Font.BOLD, 20);
g.setFont(font);
// 鐢昏竟妗?/span>
g.setColor(Color.GRAY);
g.drawRect(0, 0, width - 1, height - 1);
g.setColor(Color.GRAY);
// 闅忔満浜х敓騫叉壈綰?/span>
for (int i = 0; i < 50; i++) {
int x = random.nextInt(width);
int y = random.nextInt(height);
int x1 = random.nextInt(2);
int y1 = random.nextInt(2);
g.drawLine(x, y, x + x1, y + y1);
}
// 鏁板瓧瀛楁瘝闆嗗悎
char[] numbersAndLettersStore = ("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
.toCharArray();
String randomCode = null;
int red = 0, green = 0, blue = 0;
for (int i = 0; i < 4; i++) {
red = random.nextInt(255);
green = random.nextInt(255);
blue = random.nextInt(255);
g.setColor(new Color(red, green, blue));
String tem = String.valueOf(numbersAndLettersStore[random
.nextInt(62)]);
randomCode += tem;
g.drawString(tem, 15 * i + 16, 17);
}
// 楠岃瘉鐮佷繚瀛樺埌Session鑼冨洿
HttpSession session = req.getSession();
session.setAttribute("code", randomCode.toString());
// 紱佹緙撳瓨
resp.setHeader("Prama", "no-cache");
resp.setHeader("Coche-Control", "no-cache");
resp.setDateHeader("Expires", 0);
resp.setContentType("image/jpeg");
// 灝嗗浘鍍忚緭鍑哄埌
ServletOutputStream sos = resp.getOutputStream();
ImageIO.write(buffImg, "jpeg", sos);
sos.close();
}
}
]]>
create or replace procedure Xiao_Note
(
name in varchar2,
email in varchar2,
dept in varchar2
)
is
begin
insert into email (id,name,email,dept) values(Autoaddid.Nextval,name,email,dept);
commit;
end Xiao_Note;
鍏朵腑Autoaddid.Nextval鏄緩鐨勪竴涓猳racle鐨勮嚜澧為暱搴忓垪錛岀敤浜庡仛涓婚敭鐢ㄧ殑(
name in varchar2,
email in varchar2,
dept in varchar2
)
is
begin
insert into email (id,name,email,dept) values(Autoaddid.Nextval,name,email,dept);
commit;
end Xiao_Note;
緙栬瘧鎴愬姛鍚庛傛祴璇?br />
銆傘傘?
public static void main(String[] args) throws SQLException {
CommonDAO dao=new CommonDAO();
Connection conn=dao.getConnection();
String procedure = "{call XIAO_NOTE(?,?,?)}";
CallableStatement cstmt = conn.prepareCall(procedure);
cstmt.setString(1,"liuyong1111");
cstmt.setString(2,"liuyongcic@163.com");
cstmt.setString(3,"xx");
cstmt.executeUpdate();
System.out.println("ok");
}
銆傘傘?br />
public static void main(String[] args) throws SQLException {
CommonDAO dao=new CommonDAO();
Connection conn=dao.getConnection();
String procedure = "{call XIAO_NOTE(?,?,?)}";
CallableStatement cstmt = conn.prepareCall(procedure);
cstmt.setString(1,"liuyong1111");
cstmt.setString(2,"liuyongcic@163.com");
cstmt.setString(3,"xx");
cstmt.executeUpdate();
System.out.println("ok");
}
銆傘傘?br />
]]>
function initList(perPageSize){
//alert(perPageSize);
var listTable=document.getElementById("listTable");
var rowLength = listTable.rows.length;
//alert("rowLength"+rowLength);
if( rowLength<=perPageSize ){
for( var i=0 ; i<perPageSize-rowLength ; i++ ){
//alert("ddd");
var rowObj = listTable.insertRow();
rowObj.className="c";
for( var j=0 ; j<listTable.rows[ 0 ].cells.length ; j++ ){
//alert("xxx");
var cellObj=rowObj.insertCell();
cellObj.style.height="24";
//cellObj.innerHTML="ASDG";
}
}
}
}
//alert(perPageSize);
var listTable=document.getElementById("listTable");
var rowLength = listTable.rows.length;
//alert("rowLength"+rowLength);
if( rowLength<=perPageSize ){
for( var i=0 ; i<perPageSize-rowLength ; i++ ){
//alert("ddd");
var rowObj = listTable.insertRow();
rowObj.className="c";
for( var j=0 ; j<listTable.rows[ 0 ].cells.length ; j++ ){
//alert("xxx");
var cellObj=rowObj.insertCell();
cellObj.style.height="24";
//cellObj.innerHTML="ASDG";
}
}
}
}
]]>
<Context>
<Resource name="jdbc/test"
type="javax.sql.DataSource"
username="liuyong"
password="liuyong"
driverClassName="oracle.jdbc.OracleDriver"
maxIdle="2"
maxWait="5000"
url="jdbc:oracle:thin:@localhost:1521:liuyong"
maxActive="4"/>
</Context>
涓錛氭妸涓婇潰鐨勪唬鐮侊紝鍔犲叆tomcat錛屽畨瑁呯洰褰曚笅conf鏂囦歡澶逛笅鐨剆erver.xml涓紝浣嶇疆鏀懼湪 </GlobalNamingResources>鑺傜偣涔嬪悗鍚э紒錛圗:\tomcat6\conf\錛?br />
<Resource name="jdbc/test"
type="javax.sql.DataSource"
username="liuyong"
password="liuyong"
driverClassName="oracle.jdbc.OracleDriver"
maxIdle="2"
maxWait="5000"
url="jdbc:oracle:thin:@localhost:1521:liuyong"
maxActive="4"/>
</Context>
浜岋細鍙﹀鍐嶅緩涓涓拰浣犲伐紼嬪悕涓鏍風殑.xml鏂囦歡錛屾妸涓婅堪浠ｇ爜COPY榪涘幓錛岀劧鍚庝繚瀛樻斁鍦‥:\tomcat6\conf\Catalina\localhost鏂囦歡澶逛腑錛屽鏋滄病鏈塁atalina鐩綍灝辮嚜宸卞緩錛屽ソ
涓夛細涔嬪悗鍛㈠湪浣犵殑宸ョ▼web.xml涓姞鍏ュ涓嬩唬鐮侊細
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/test</res-ref-name>
<res-type>javax.sql.DataSource </res-type>
<res-auth>Container</res-auth>
</resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/test</res-ref-name>
<res-type>javax.sql.DataSource </res-type>
<res-auth>Container</res-auth>
</resource-ref>
瀹屼簡錛岄厤緗粨鏉燂紝寮濮嬫祴璇曪細
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="java.sql.*"%>
<%@ page import="javax.naming.*"%>
<%@ page import="javax.sql.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>tomcat datasource test</title>
</head>
<body>
<%
Context initContext = new InitialContext();
//娉曚竴錛?/span>java:/comp/env榪欎釜鐜╂剰鏄浐瀹氱殑
//Context envContext = (Context) initContext.lookup("java:/comp/env");
//DataSource db = (DataSource)envContext.lookup("jdbc/test");
//娉曚簩錛?br /> DataSource db = (DataSource)initContext.lookup("java:/comp/env/jdbc/test");
Connection conn = db.getConnection();
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT * FROM XIAO");
while(rs.next()){
out.print(rs.getString("name")+"__ ");
out.print(rs.getString("school")+"<br>");
}
rs.close();
stmt.close();
conn.close();
%>
</body>
</html>
<%@ page import="java.sql.*"%>
<%@ page import="javax.naming.*"%>
<%@ page import="javax.sql.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>tomcat datasource test</title>
</head>
<body>
<%
Context initContext = new InitialContext();
//娉曚竴錛?/span>java:/comp/env榪欎釜鐜╂剰鏄浐瀹氱殑
//Context envContext = (Context) initContext.lookup("java:/comp/env");
//DataSource db = (DataSource)envContext.lookup("jdbc/test");
//娉曚簩錛?br /> DataSource db = (DataSource)initContext.lookup("java:/comp/env/jdbc/test");
Connection conn = db.getConnection();
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT * FROM XIAO");
while(rs.next()){
out.print(rs.getString("name")+"__ ");
out.print(rs.getString("school")+"<br>");
}
rs.close();
stmt.close();
conn.close();
%>
</body>
</html>
game over
鍛ㄦ湯鐪熸棤鑱婂晩錛?br />
]]>
package com.hunau.liuyong;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
//鍏朵腑User灝辨槸涓涓猙ean錛岄噷闈㈠氨涓涓猲ame灞炴?br /> public class Test {
public static void main(String[] args) throws SecurityException, NoSuchMethodException, NoSuchFieldException, IllegalArgumentException, IllegalAccessException, InvocationTargetException{
User user=new User();
List list=new ArrayList();
list.add(user);
System.out.print("+++++++");
Method method=getSetMethod(list.get(0).getClass(),"name");
System.out.print("+++++++");
method.invoke(list.get(0),"liuyong");
method=getGetMethod(list.get(0).getClass(),"name");
System.out.println(method.invoke(list.get(0),null));
}
public static Method getGetMethod(Class objectClass,String fieldName) throws SecurityException, NoSuchMethodException{
System.out.print("+++++++");
StringBuffer sb=new StringBuffer();
sb.append("get");
sb.append(fieldName.substring(0,1).toUpperCase());
sb.append(fieldName.substring(1));
Method method=objectClass.getMethod(sb.toString(), null);
System.out.print("+++++++");
return method;
}
public static Method getSetMethod(Class objectClass,String fieldName) throws SecurityException, NoSuchMethodException, NoSuchFieldException{
Class[] parameterTypes=new Class[1];
Field field=objectClass.getDeclaredField(fieldName);
System.out.println("dasg");
parameterTypes[0]=field.getType();
StringBuffer sb=new StringBuffer();
System.out.println("dasg");
sb.append("set");
sb.append(fieldName.substring(0,1).toUpperCase());
sb.append(fieldName.substring(1));
System.out.println(fieldName);
Method method=objectClass.getMethod(sb.toString(), parameterTypes);
System.out.println("dasg");
return method;
}
}
]]>
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;
//dom4j瀹樼綉 錛堥噷闈㈡湁鏁欑▼錛?http://dom4j.org/
public class Dom4jCreateXML {
public Document createDocument() {
Document document = DocumentHelper.createDocument();
Element root = document.addElement( "root" );
Element author1 = root.addElement( "author" )
.addAttribute( "name", "鏈堣娊鍎?/span>" )
.addAttribute( "location", "UK" )
.addText( "James Strachan" );
Element author2 = root.addElement( "author" )
.addAttribute( "name", "Bob" )
.addAttribute( "location", "US" )
.addText( "Bob McWhirter" );
return document;
}
public static void main(String[] args) throws Exception{
//FileWriter out = new FileWriter( "D:/test2.xml" );
Dom4jCreateXML djxml=new Dom4jCreateXML();
djxml.write(djxml.createDocument());
}
public void write(Document document) throws IOException {
// lets write to a file
XMLWriter writer = new XMLWriter(
new FileWriter( "d:/output.xml" )
);
writer.write( document );
writer.close();
//Pretty print the document to System.out
OutputFormat format = OutputFormat.createPrettyPrint();
writer = new XMLWriter( System.out, format );
writer.write( document );
//鏍煎紡鍖栦簡XML杈撳嚭錛岀湅鏁堟灉錛岃繖涓湁鐢ㄤ竴浜?br /> //OutputFormat format = OutputFormat.createPrettyPrint();
/** 鎸囧畾XML瀛楃闆嗙紪鐮?nbsp;*/
format.setEncoding("GBK");
writer = new XMLWriter(new FileWriter(new File("d:/output2.xml")),format);
writer.write(document);
writer.close();
//Compact format to System.out
format = OutputFormat.createCompactFormat();
writer = new XMLWriter( System.out, format );
writer.write( document );
}
}
]]>
]]>
Test.java
package com.hunau.liuyong;
import com.hunau.liuyong.FileMethod;
public class Test{
public static void main(String[] args) throws IOException
{
FileMethod fileMethod = new FileMethod();
String[] ss = new String[50];
for(int i=0;i<ss.length;i++)
{
ss[i] = "緗?璁＄畻鏈鴻蔣紜歡,閫氳) "+i;
}
System.out.println("f:\\dd\\");
fileMethod.fileIsNull("f:\\ss\\","me.txt");
}
}
FileMethod.javaimport com.hunau.liuyong.FileMethod;
public class Test{
public static void main(String[] args) throws IOException
{
FileMethod fileMethod = new FileMethod();
String[] ss = new String[50];
for(int i=0;i<ss.length;i++)
{
ss[i] = "緗?璁＄畻鏈鴻蔣紜歡,閫氳) "+i;
}
System.out.println("f:\\dd\\");
fileMethod.fileIsNull("f:\\ss\\","me.txt");
}
}
package com.hunau.liuyong;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
public class FileMethod{
/**
*
* 鏂囦歡鐨勫啓鍏?br /> *
* @param filePath(鏂囦歡璺緞)
*
* @param fileName(鏂囦歡鍚?
*
* @param args[]
*
* @throws IOException
*
*/
public void writeFile(String filePath, String fileName, String[] args)
throws IOException {
//1
FileWriter fw = new FileWriter(filePath + fileName);
//2 1澶勫彲浠ョ敤2澶勪唬鏇?br /> //File fw = new File(filePath+fileName);
//fw.createNewFile();
PrintWriter out = new PrintWriter(fw);
for (int i = 0; i < args.length; i++) {
out.write(args[i]);
out.println();
out.flush();
}
fw.close();
out.close();
}
/**
*
* 鏂囦歡鐨勫啓鍏?br /> *
* @param filePath(鏂囦歡璺緞)
*
* @param fileName(鏂囦歡鍚?
*
* @param args
*
* @throws IOException
*
*/
public void writeFile(String filePath, String fileName, String args)
throws IOException
{
FileWriter fw = new FileWriter(filePath + fileName);
fw.write(args);
fw.close();
}
/**
*
* 鍒涘緩涓庡垹闄ゆ枃浠?br /> *
* @param filePath
*
* @param fileName
*
* @return 鍒涘緩鎴愬姛榪斿洖true
*
* @throws IOException
*
*/
public boolean createAndDeleteFile(String filePath, String fileName)
throws IOException {
boolean result = false;
File file = new File(filePath, fileName);
if (file.exists()) {
file.delete();
result = true;
System.out.println("鏂囦歡宸茬粡鍒犻櫎錛?/span>");
} else {
file.createNewFile();
result = true;
System.out.println("鏂囦歡宸茬粡鍒涘緩錛?/span>");
}
return result;
}
/**
*
* 鍒涘緩鍜屽垹闄ょ洰褰?br /> *
* @param folderName
*
* @param filePath
*
* @return 鍒犻櫎鎴愬姛榪斿洖true
*
*/
public boolean createAndDeleteFolder(String folderName, String filePath)
{
boolean result = false;
try {
File file = new File(filePath + folderName);
if (file.exists()) {
file.delete();
System.out.println("鐩綍宸茬粡瀛樺湪錛屽凡鍒犻櫎!");
result = true;
} else {
file.mkdir();
System.out.println("鐩綍涓嶅瓨鍦紝宸茬粡寤虹珛!");
result = true;
}
} catch (Exception ex) {
result = false;
System.out.println("CreateAndDeleteFolder is error:" + ex);
}
return result;
}
/**
*
* 杈撳嚭鐩綍涓殑鎵鏈夋枃浠跺強鐩綍鍚嶅瓧
*
* @param filePath
*
*/
public void readFolderByFile(String filePath) {
File file = new File(filePath);
File[] tempFile = file.listFiles();
for (int i = 0; i < tempFile.length; i++) {
if (tempFile[i].isFile()) {
System.out.println("File : " + tempFile[i].getName());
}
if (tempFile[i].isDirectory()) {
System.out.println("Directory : " + tempFile[i].getName());
}
}
}
/**
*
* 媯鏌ユ枃浠朵腑鏄惁涓轟竴涓┖
*
* @param filePath
*
* @param fileName
*
* @return 涓虹┖榪斿洖true
*
* @throws IOException
*
*/
public boolean fileIsNull(String filePath, String fileName)
throws IOException {
boolean result = false;
FileReader fr = new FileReader(filePath + fileName);
if (fr.read() == -1) {
result = true;
System.out.println(fileName + " 鏂囦歡涓病鏈夋暟鎹?");
} else {
System.out.println(fileName + " 鏂囦歡涓湁鏁版嵁!");
}
fr.close();
return result;
}
/**
*
* 涓琛屼竴琛岀殑璇誨彇鏂囦歡涓殑鏁版嵁
*
* @param filePath
*
* @param fileName
*
* @throws IOException
*
*/
public void readLineFile(String filePath, String fileName)
throws IOException {
FileReader fr = new FileReader(filePath + fileName);
BufferedReader br = new BufferedReader(fr);
String line = br.readLine();
while (line != null) {
System.out.println(line);
line = br.readLine();
}
br.close();
fr.close();
}
}
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
public class FileMethod{
/**
*
* 鏂囦歡鐨勫啓鍏?br /> *
* @param filePath(鏂囦歡璺緞)
*
* @param fileName(鏂囦歡鍚?
*
* @param args[]
*
* @throws IOException
*
*/
public void writeFile(String filePath, String fileName, String[] args)
throws IOException {
//1
FileWriter fw = new FileWriter(filePath + fileName);
//2 1澶勫彲浠ョ敤2澶勪唬鏇?br /> //File fw = new File(filePath+fileName);
//fw.createNewFile();
PrintWriter out = new PrintWriter(fw);
for (int i = 0; i < args.length; i++) {
out.write(args[i]);
out.println();
out.flush();
}
fw.close();
out.close();
}
/**
*
* 鏂囦歡鐨勫啓鍏?br /> *
* @param filePath(鏂囦歡璺緞)
*
* @param fileName(鏂囦歡鍚?
*
* @param args
*
* @throws IOException
*
*/
public void writeFile(String filePath, String fileName, String args)
throws IOException
{
FileWriter fw = new FileWriter(filePath + fileName);
fw.write(args);
fw.close();
}
/**
*
* 鍒涘緩涓庡垹闄ゆ枃浠?br /> *
* @param filePath
*
* @param fileName
*
* @return 鍒涘緩鎴愬姛榪斿洖true
*
* @throws IOException
*
*/
public boolean createAndDeleteFile(String filePath, String fileName)
throws IOException {
boolean result = false;
File file = new File(filePath, fileName);
if (file.exists()) {
file.delete();
result = true;
System.out.println("鏂囦歡宸茬粡鍒犻櫎錛?/span>");
} else {
file.createNewFile();
result = true;
System.out.println("鏂囦歡宸茬粡鍒涘緩錛?/span>");
}
return result;
}
/**
*
* 鍒涘緩鍜屽垹闄ょ洰褰?br /> *
* @param folderName
*
* @param filePath
*
* @return 鍒犻櫎鎴愬姛榪斿洖true
*
*/
public boolean createAndDeleteFolder(String folderName, String filePath)
{
boolean result = false;
try {
File file = new File(filePath + folderName);
if (file.exists()) {
file.delete();
System.out.println("鐩綍宸茬粡瀛樺湪錛屽凡鍒犻櫎!");
result = true;
} else {
file.mkdir();
System.out.println("鐩綍涓嶅瓨鍦紝宸茬粡寤虹珛!");
result = true;
}
} catch (Exception ex) {
result = false;
System.out.println("CreateAndDeleteFolder is error:" + ex);
}
return result;
}
/**
*
* 杈撳嚭鐩綍涓殑鎵鏈夋枃浠跺強鐩綍鍚嶅瓧
*
* @param filePath
*
*/
public void readFolderByFile(String filePath) {
File file = new File(filePath);
File[] tempFile = file.listFiles();
for (int i = 0; i < tempFile.length; i++) {
if (tempFile[i].isFile()) {
System.out.println("File : " + tempFile[i].getName());
}
if (tempFile[i].isDirectory()) {
System.out.println("Directory : " + tempFile[i].getName());
}
}
}
/**
*
* 媯鏌ユ枃浠朵腑鏄惁涓轟竴涓┖
*
* @param filePath
*
* @param fileName
*
* @return 涓虹┖榪斿洖true
*
* @throws IOException
*
*/
public boolean fileIsNull(String filePath, String fileName)
throws IOException {
boolean result = false;
FileReader fr = new FileReader(filePath + fileName);
if (fr.read() == -1) {
result = true;
System.out.println(fileName + " 鏂囦歡涓病鏈夋暟鎹?");
} else {
System.out.println(fileName + " 鏂囦歡涓湁鏁版嵁!");
}
fr.close();
return result;
}
/**
*
* 涓琛屼竴琛岀殑璇誨彇鏂囦歡涓殑鏁版嵁
*
* @param filePath
*
* @param fileName
*
* @throws IOException
*
*/
public void readLineFile(String filePath, String fileName)
throws IOException {
FileReader fr = new FileReader(filePath + fileName);
BufferedReader br = new BufferedReader(fr);
String line = br.readLine();
while (line != null) {
System.out.println(line);
line = br.readLine();
}
br.close();
fr.close();
}
}
]]>
]]>
package com.hunau.liuyong;
import java.sql.Connection;
import java.sql.SQLException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;
public class Conn {
private Connection conn;
private DataSource ds;
public Conn() {
try {
Context initCtx = new InitialContext();
if (initCtx == null) {
throw new Exception("涓婁笅鏂囧姞杞藉け璐?/span>");
}
//鑾峰彇鍦╳eblogic涓厤緗殑“jdbc/test”鏁版嵁婧?/span>
ds = (DataSource) initCtx.lookup("jdbc/test");
} catch (Exception ex) {
ex.printStackTrace();
}
}
public Connection getConn() {
try {
conn = ds.getConnection();
} catch (SQLException ex) {
ex.printStackTrace();
}
return conn;
}
public void closeConn(Connection conn) {
try {
if (conn != null) {
conn.close();
conn = null;
}
} catch (SQLException ex) {
ex.printStackTrace();
}
}
}
3銆乤ction錛宻ervlet錛宩sp涓氳繃Conn鍘昏幏寰楄繛鎺ヨ闂暟鎹簱鐨勮繛鎺ワ紝鍏朵綑姝ラ鍜屾櫘閫歫dbc鎿嶄綔涓鏍?br />
import java.sql.Connection;
import java.sql.SQLException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;
public class Conn {
private Connection conn;
private DataSource ds;
public Conn() {
try {
Context initCtx = new InitialContext();
if (initCtx == null) {
throw new Exception("涓婁笅鏂囧姞杞藉け璐?/span>");
}
//鑾峰彇鍦╳eblogic涓厤緗殑“jdbc/test”鏁版嵁婧?/span>
ds = (DataSource) initCtx.lookup("jdbc/test");
} catch (Exception ex) {
ex.printStackTrace();
}
}
public Connection getConn() {
try {
conn = ds.getConnection();
} catch (SQLException ex) {
ex.printStackTrace();
}
return conn;
}
public void closeConn(Connection conn) {
try {
if (conn != null) {
conn.close();
conn = null;
}
} catch (SQLException ex) {
ex.printStackTrace();
}
}
}
]]>