JDBC+Servlet+JSP整合開發之31-JSP項目實戰
–編程思想
?分層開發思想
?面向接口編程思想
–設計模式
? DAO設計模式
? MVC設計模式
–實例
?收藏管理
?分層開發思想
?面向接口編程思想
–設計模式
? DAO設計模式
? MVC設計模式
–實例
?收藏管理
------------------------------Start-----------------------------------
? 編程思想
–分層開發思想
?軟件的層次結構能夠分爲四層：
–表現層
–控制層
–業務邏輯層
–數據邏輯層（持久層）
–面向接口編程思想
?在編程中將業務邏輯抽象出接口，以供上次調用
?依賴抽象（接口），而非具體（接口實現）的編程思想，又稱之爲控制反轉（Inversion of Control)
–分層開發思想
?軟件的層次結構能夠分爲四層：
–表現層
–控制層
–業務邏輯層
–數據邏輯層（持久層）
–面向接口編程思想
?在編程中將業務邏輯抽象出接口，以供上次調用
?依賴抽象（接口），而非具體（接口實現）的編程思想，又稱之爲控制反轉（Inversion of Control)
? 設計模式
–DAO設計模式
? DAO的全稱是：Data Access Object，數據訪問對象。
? 使用DAO設計模式，來封裝數據庫持久層的因此操做（CRUD），使 低級的數據邏輯和高級的業務邏輯分離，達到解耦合的目的。
–一個典型的DAO實現有以下的組件：
? 一個 DAO 接口
? 一個實現了 DAO 接口的具體類
? 一個 DAO 工廠類
? 數據傳輸對象(有時稱爲值對象)
–以維護一個客戶信息爲例，具體組件以下所示：
? CustomerDao 接口
? Customer 值對象（VO)
? CustomerDaoImpl（接口的具體實現類）
? CustomerFactory（工廠類，實例化用）
–DAO設計模式
? DAO的全稱是：Data Access Object，數據訪問對象。
? 使用DAO設計模式，來封裝數據庫持久層的因此操做（CRUD），使 低級的數據邏輯和高級的業務邏輯分離，達到解耦合的目的。
–一個典型的DAO實現有以下的組件：
? 一個 DAO 接口
? 一個實現了 DAO 接口的具體類
? 一個 DAO 工廠類
? 數據傳輸對象(有時稱爲值對象)
–以維護一個客戶信息爲例，具體組件以下所示：
? CustomerDao 接口
? Customer 值對象（VO)
? CustomerDaoImpl（接口的具體實現類）
? CustomerFactory（工廠類，實例化用）
? 編程思想和設計模式的具體應用
–圖示
–圖示
? 實例
–收藏管理
?實例描述
–本實例運用了分層開發思想、面向接口編程兩種思想；和
DAO、MVC設計模式來實現一個收藏管理程序
–程序的主要功能是，把感興趣的連接作維護，包括添加一個新
的連接、刪除一個連接、顯示一個連接列表、修改連接等內容
?用到的表
–收藏表（LinkTbl)
–收藏管理
?實例描述
–本實例運用了分層開發思想、面向接口編程兩種思想；和
DAO、MVC設計模式來實現一個收藏管理程序
–程序的主要功能是，把感興趣的連接作維護，包括添加一個新
的連接、刪除一個連接、顯示一個連接列表、修改連接等內容
?用到的表
–收藏表（LinkTbl)
? 實例
–收藏管理
?程序部分運行結果
–收藏管理
?程序部分運行結果
LinkDao.java
LinkDaoImpl.java
package com.michael.dao.impl;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import com.michael.dao.LinkDao;
import com.michael.util.ConnectionUtil;
import com.michael.util.SQLConstants;
import com.michael.vo.Link;
public class LinkDaoImpl implements LinkDao,SQLConstants{
public void add(Link l) {
Connection conn = new ConnectionUtil().openConnection();
try {
PreparedStatement pstmt = conn.prepareStatement(ADD_LINK_SQL);
pstmt.setString(1, l.getName());
pstmt.setString(2, l.getUrl());
pstmt.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
} finally{
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
public void delete(String[] ids) {
Connection conn = new ConnectionUtil().openConnection();
try {
PreparedStatement pstmt = conn.prepareStatement(DELETE_LINK_SQL);
if(ids!= null&&ids.length>0)
for( int i=0;i<ids.length;i++){
pstmt.setInt(1, Integer.parseInt(ids[i]));
pstmt.executeUpdate();
}
} catch (SQLException e) {
e.printStackTrace();
} finally{
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
public Link get( int id) {
Connection conn = new ConnectionUtil().openConnection();
try {
PreparedStatement pstmt = conn.prepareStatement(GET_LINK_SQL);
pstmt.setInt(1, id);
ResultSet rs = pstmt.executeQuery();
if(rs.next()){
//int id = rs.getInt(1);
String name = rs.getString(2);
String url = rs.getString(3);
Link l = new Link();
l.setId(id);
l.setName(name);
l.setUrl(url);
return l;
}
} catch (SQLException e) {
e.printStackTrace();
} finally{
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
return null;
}
public List list() {
Connection conn = new ConnectionUtil().openConnection();
try {
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(QUERY_LINK_SQL);
List list = new ArrayList();
while(rs.next()){
int id = rs.getInt(1);
String name = rs.getString(2);
String url = rs.getString(3);
Link l = new Link();
l.setId(id);
l.setName(name);
l.setUrl(url);
list.add(l);
}
return list;
} catch (SQLException e) {
e.printStackTrace();
} finally{
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
return null;
}
public void update(Link l) {
Connection conn = new ConnectionUtil().openConnection();
try {
PreparedStatement pstmt = conn.prepareStatement(UPDATE_LINK_SQL);
pstmt.setString(1, l.getName());
pstmt.setString(2, l.getUrl());
pstmt.setInt(3, l.getId());
pstmt.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
} finally{
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import com.michael.dao.LinkDao;
import com.michael.util.ConnectionUtil;
import com.michael.util.SQLConstants;
import com.michael.vo.Link;
public class LinkDaoImpl implements LinkDao,SQLConstants{
public void add(Link l) {
Connection conn = new ConnectionUtil().openConnection();
try {
PreparedStatement pstmt = conn.prepareStatement(ADD_LINK_SQL);
pstmt.setString(1, l.getName());
pstmt.setString(2, l.getUrl());
pstmt.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
} finally{
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
public void delete(String[] ids) {
Connection conn = new ConnectionUtil().openConnection();
try {
PreparedStatement pstmt = conn.prepareStatement(DELETE_LINK_SQL);
if(ids!= null&&ids.length>0)
for( int i=0;i<ids.length;i++){
pstmt.setInt(1, Integer.parseInt(ids[i]));
pstmt.executeUpdate();
}
} catch (SQLException e) {
e.printStackTrace();
} finally{
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
public Link get( int id) {
Connection conn = new ConnectionUtil().openConnection();
try {
PreparedStatement pstmt = conn.prepareStatement(GET_LINK_SQL);
pstmt.setInt(1, id);
ResultSet rs = pstmt.executeQuery();
if(rs.next()){
//int id = rs.getInt(1);
String name = rs.getString(2);
String url = rs.getString(3);
Link l = new Link();
l.setId(id);
l.setName(name);
l.setUrl(url);
return l;
}
} catch (SQLException e) {
e.printStackTrace();
} finally{
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
return null;
}
public List list() {
Connection conn = new ConnectionUtil().openConnection();
try {
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(QUERY_LINK_SQL);
List list = new ArrayList();
while(rs.next()){
int id = rs.getInt(1);
String name = rs.getString(2);
String url = rs.getString(3);
Link l = new Link();
l.setId(id);
l.setName(name);
l.setUrl(url);
list.add(l);
}
return list;
} catch (SQLException e) {
e.printStackTrace();
} finally{
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
return null;
}
public void update(Link l) {
Connection conn = new ConnectionUtil().openConnection();
try {
PreparedStatement pstmt = conn.prepareStatement(UPDATE_LINK_SQL);
pstmt.setString(1, l.getName());
pstmt.setString(2, l.getUrl());
pstmt.setInt(3, l.getId());
pstmt.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
} finally{
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
LinkServlet.java
package com.michael.servlet;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.michael.dao.LinkDao;
import com.michael.dao.impl.LinkDaoImpl;
import com.michael.vo.Link;
public class LinkServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public LinkServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request,response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String methodName = request.getParameter( "methodName");
if (methodName != null && methodName.equals( "add")) {
add(request, response);
} else if (methodName != null && methodName.equals( "query")) {
query(request, response);
} else if (methodName != null && methodName.equals( "delete")) {
delete(request, response);
} else if (methodName != null && methodName.equals( "forward")) {
forward(request, response);
} else if (methodName != null && methodName.equals( "update")) {
update(request, response);
} else {
return;
}
/*
//響應用戶請求
String name = request.getParameter("name");
String url = request.getParameter("url");
//調用後臺邏輯
LinkDao dao = new LinkDaoImpl();
Link l = new Link();
l.setName(name);
l.setUrl(url);
dao.add(l);
List list = dao.list();
request.setAttribute("LinkList", list);
//轉發
request.getRequestDispatcher("/link.jsp").forward(request, response);
*/
}
public void add(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//響應用戶請求
String name = request.getParameter( "name");
String url = request.getParameter( "url");
//調用後臺邏輯
LinkDao dao = new LinkDaoImpl();
Link l = new Link();
l.setName(name);
l.setUrl(url);
dao.add(l);
query(request,response);
}
public void query(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//調用後臺邏輯
LinkDao dao = new LinkDaoImpl();
List list = dao.list();
request.setAttribute( "LinkList", list);
//轉發
request.getRequestDispatcher( "/link.jsp").forward(request, response);
}
public void delete(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//調用後臺邏輯
LinkDao dao = new LinkDaoImpl();
String[] ids = request.getParameterValues( "ids");
dao.delete(ids);
query(request,response);
}
public void forward(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//調用後臺邏輯
String id = request.getParameter( "id");
LinkDao dao = new LinkDaoImpl();
Link link = dao.get(Integer.parseInt(id));
request.setAttribute( "link", link);
request.getRequestDispatcher( "/editLink.jsp").forward(request, response);
}
public void update(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//響應用戶請求
String id = request.getParameter( "id");
String name = request.getParameter( "name");
String url = request.getParameter( "url");
//調用後臺邏輯
LinkDao dao = new LinkDaoImpl();
Link l = new Link();
l.setId(Integer.parseInt(id));
l.setName(name);
l.setUrl(url);
dao.update(l);
query(request,response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.michael.dao.LinkDao;
import com.michael.dao.impl.LinkDaoImpl;
import com.michael.vo.Link;
public class LinkServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public LinkServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request,response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String methodName = request.getParameter( "methodName");
if (methodName != null && methodName.equals( "add")) {
add(request, response);
} else if (methodName != null && methodName.equals( "query")) {
query(request, response);
} else if (methodName != null && methodName.equals( "delete")) {
delete(request, response);
} else if (methodName != null && methodName.equals( "forward")) {
forward(request, response);
} else if (methodName != null && methodName.equals( "update")) {
update(request, response);
} else {
return;
}
/*
//響應用戶請求
String name = request.getParameter("name");
String url = request.getParameter("url");
//調用後臺邏輯
LinkDao dao = new LinkDaoImpl();
Link l = new Link();
l.setName(name);
l.setUrl(url);
dao.add(l);
List list = dao.list();
request.setAttribute("LinkList", list);
//轉發
request.getRequestDispatcher("/link.jsp").forward(request, response);
*/
}
public void add(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//響應用戶請求
String name = request.getParameter( "name");
String url = request.getParameter( "url");
//調用後臺邏輯
LinkDao dao = new LinkDaoImpl();
Link l = new Link();
l.setName(name);
l.setUrl(url);
dao.add(l);
query(request,response);
}
public void query(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//調用後臺邏輯
LinkDao dao = new LinkDaoImpl();
List list = dao.list();
request.setAttribute( "LinkList", list);
//轉發
request.getRequestDispatcher( "/link.jsp").forward(request, response);
}
public void delete(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//調用後臺邏輯
LinkDao dao = new LinkDaoImpl();
String[] ids = request.getParameterValues( "ids");
dao.delete(ids);
query(request,response);
}
public void forward(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//調用後臺邏輯
String id = request.getParameter( "id");
LinkDao dao = new LinkDaoImpl();
Link link = dao.get(Integer.parseInt(id));
request.setAttribute( "link", link);
request.getRequestDispatcher( "/editLink.jsp").forward(request, response);
}
public void update(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//響應用戶請求
String id = request.getParameter( "id");
String name = request.getParameter( "name");
String url = request.getParameter( "url");
//調用後臺邏輯
LinkDao dao = new LinkDaoImpl();
Link l = new Link();
l.setId(Integer.parseInt(id));
l.setName(name);
l.setUrl(url);
dao.update(l);
query(request,response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
ConnectionUtil.java
package com.michael.util;
import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Properties;
public class ConnectionUtil {
/**
* @param args
*/
public static void main(String[] args) {
ConnectionUtil cu = new ConnectionUtil();
System.out.println(cu.openConnection());
}
public Connection openConnection() {
String url = "";
String driver = "";
String user = "";
String password = "";
Properties prop = new Properties();
try {
prop.load( this.getClass().getClassLoader().getResourceAsStream( "DBConfig.properties"));
driver = prop.getProperty( "driver");
url = prop.getProperty( "url");
user = prop.getProperty( "user");
password = prop.getProperty( "password");
Class.forName(driver);
Connection conn = DriverManager.getConnection(
url, user, password);
return conn;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public Connection getConnection(String driver, String url, String user,
String password) {
// Class.forName()
try {
Class.forName(driver);
// DriverManager get connection
Connection conn = DriverManager.getConnection(url, user, password);
return conn;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public Connection getConnection() {
// Class.forName()
try {
Class.forName( "com.mysql.jdbc.Driver");
// DriverManager get connection
Connection conn = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/jsp_db", "root", "963963");
return conn;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Properties;
public class ConnectionUtil {
/**
* @param args
*/
public static void main(String[] args) {
ConnectionUtil cu = new ConnectionUtil();
System.out.println(cu.openConnection());
}
public Connection openConnection() {
String url = "";
String driver = "";
String user = "";
String password = "";
Properties prop = new Properties();
try {
prop.load( this.getClass().getClassLoader().getResourceAsStream( "DBConfig.properties"));
driver = prop.getProperty( "driver");
url = prop.getProperty( "url");
user = prop.getProperty( "user");
password = prop.getProperty( "password");
Class.forName(driver);
Connection conn = DriverManager.getConnection(
url, user, password);
return conn;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public Connection getConnection(String driver, String url, String user,
String password) {
// Class.forName()
try {
Class.forName(driver);
// DriverManager get connection
Connection conn = DriverManager.getConnection(url, user, password);
return conn;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public Connection getConnection() {
// Class.forName()
try {
Class.forName( "com.mysql.jdbc.Driver");
// DriverManager get connection
Connection conn = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/jsp_db", "root", "963963");
return conn;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
SQLConstants.java
Link.java
DBConfig.properties
link.jsp
<%@ page language=
"java"
import=
"java.util.*" pageEncoding=
"gbk"%>
<%@ taglib uri= "http://java.sun.com/jsp/jstl/core" prefix="redking"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'link.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form name="f1" id="f1" action="<%=path %>/servlet/LinkServlet?methodName=add" method="post">
<table border="0">
<tr>
<td>Name:</td>
<td><input type="text" name="name" ></td>
</tr>
<tr>
<td>Url:</td>
<td><input type="text" name="url"></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="Add"></td>
</tr>
</table>
</form>
<hr/>
<form name="f2" action="<%=path %>/servlet/LinkServlet?methodName=delete" method="post">
<table>
<tr><th>ID</th><th>Name</th><th>URL</th><th>Edit</th><th>Delete</th></tr>
<redking:forEach var="1" items="${LinkList}">
<tr>
<td>${l.id }</td>
<td>${l.name }</td>
<td>${l.url }</td>
<td><a href="<%=path %>/servlet/LinkServlet?methodName=forward&id=${l.id }">Edit</a></td>
<td><input type="checkbox" name="ids" value="${l.id }"/></td>
</tr>
</redking:forEach>
<tr>
<td>
<input type="submit" value="Delete"/>
</td>
</tr>
</table>
</form>
</body>
</html>
<%@ taglib uri= "http://java.sun.com/jsp/jstl/core" prefix="redking"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'link.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form name="f1" id="f1" action="<%=path %>/servlet/LinkServlet?methodName=add" method="post">
<table border="0">
<tr>
<td>Name:</td>
<td><input type="text" name="name" ></td>
</tr>
<tr>
<td>Url:</td>
<td><input type="text" name="url"></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="Add"></td>
</tr>
</table>
</form>
<hr/>
<form name="f2" action="<%=path %>/servlet/LinkServlet?methodName=delete" method="post">
<table>
<tr><th>ID</th><th>Name</th><th>URL</th><th>Edit</th><th>Delete</th></tr>
<redking:forEach var="1" items="${LinkList}">
<tr>
<td>${l.id }</td>
<td>${l.name }</td>
<td>${l.url }</td>
<td><a href="<%=path %>/servlet/LinkServlet?methodName=forward&id=${l.id }">Edit</a></td>
<td><input type="checkbox" name="ids" value="${l.id }"/></td>
</tr>
</redking:forEach>
<tr>
<td>
<input type="submit" value="Delete"/>
</td>
</tr>
</table>
</form>
</body>
</html>
editLink.jsp
<%@ page language=
"java"
import=
"java.util.*" pageEncoding=
"gbk"%>
<%@ taglib uri= "http://java.sun.com/jsp/jstl/core" prefix="redking"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'link.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form name="f1" id="f1" action="<%=path %>/servlet/LinkServlet?methodName=update" method="post">
<table border="0">
<input type="hidden" name="id" value="${link.id }">
<tr>
<td>Name:</td>
<td><input type="text" name="name" value="${link.name }"></td>
</tr>
<tr>
<td>Url:</td>
<td><input type="text" name="url" value="${link.url }"></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="Update"></td>
</tr>
</table>
</form>
</body>
</html>
<%@ taglib uri= "http://java.sun.com/jsp/jstl/core" prefix="redking"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'link.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form name="f1" id="f1" action="<%=path %>/servlet/LinkServlet?methodName=update" method="post">
<table border="0">
<input type="hidden" name="id" value="${link.id }">
<tr>
<td>Name:</td>
<td><input type="text" name="name" value="${link.name }"></td>
</tr>
<tr>
<td>Url:</td>
<td><input type="text" name="url" value="${link.url }"></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="Update"></td>
</tr>
</table>
</form>
</body>
</html>
----------------------------------End----------------------------------
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