struts2、hibernate和SSH的实现
Struts2
为什么开发Struts框架？
为了符合更加灵活、高效的开发需求
实质上Struts2是以WebWork为核心的，他采用拦截机制来处理用户请求。
（1）Jsp部分
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
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>主页面</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 action="login" method="post">
请输入学号：<input type="text" name="num"><br/><br/>
<input type="submit" value="提交"/>
</form>
</body>
</html>
（2）web.xml部分
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<!-- 指定struts2的核心过滤器 -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter在lib里面，不同版本的struts对应的过滤器可能不一样，在这里的是2.4的版本
（3）lib部分
并不需要所有的包（导入所有的包可能会出现错误）
（4）servlet部分
package test;
public class ServletTest {
private String mess;
private String num;
public String getMess() {
return mess;
}
public void setMess(String mess) {
this.mess = mess;
}
public String getNum() {
return num;
}
public void setNum(String num) {
this.num = num;
}
public String execute(){
if(num.equals("111"))
return "success";
else
return "wrong";
}
}
（5）struts.xml部分
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="default" extends="struts-default">
<!-- 此处的name与index.jsp里面的action="login"对应 -->
<!-- 此处的class是jsp对应的servlet类的完整名称 -->
<action name="login" class="test.ServletTest">
<!-- 此处的name与test.ServletTest.java里面的方法返回值相对应 -->
<result name="success">/success.jsp</result>
<result name="wrong">/wrong.jsp</result>
</action>
</package>
</struts>
Hibernate
为什么开发hibernate框架？
为了提高数据库访问层的编程速度，Gavin King 开发出了当今最流行的ORM框架——hibernate。
（1）实例类
package entity;
public class User {
private int id;
private String name;
private int age;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
（2）实体类对应的.hbm.xml文件
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="org.hibernate.test.array">
<!-- 在class里面，name是实体类的类名，table表示对应的表名 -->
<class name="entity.User" lazy="true" table="user">
<!-- name="id"表示entity.User表里面的id属性，colum="id"表示user表的字段名为id -->
<!-- 如果name和colum的值一样，不需要写colum -->
<id name="id" column="id">
<generator class="native"/><!-- 表示user表里面的id字段是自增型的 -->
</id>
<!-- 其他属性使用property标签来映射 -->
<property name="name" column="name"/>
<property name="age" column="age"/>
</class>
</hibernate-mapping>
注意：每一个实体类与他对应的.hbm.xml文件同名
（3）lib
其实还有两个关于日志的包（教材上有介绍），但是在我下载的压缩文件里面没有找到
（4）Hibernate.cfg.xml
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- 指定方言 -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<!-- 数据库驱动 -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<!-- 数据库url -->
<property name="connection.url">jdbc:mysql://localhost:3306/test</property>
<!-- 数据库用户名，密码 -->
<property name="connection.username">root</property>
<property name="connection.password">admin</property>
<!-- 显示SQL语句 -->
<property name="show_sql">true</property>
<!-- 格式化SQL语句 -->
<property name="format_sql">true</property>
<!-- 用来关联hbm配置文件 -->
<mapping resource="entity/User.hbm.xml"/>
</session-factory>
</hibernate-configuration>
（5）Dao
package dao;
import java.util.Iterator;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import entity.User;
public class DAO {
private Configuration cfg;
private SessionFactory sf;
private Session s;
private Transaction ts;
/**
* 构造函数
*/
public DAO(){
//获取hibernate的配置信息
cfg = new Configuration().configure();
//更具config创建sessionFactory
sf = cfg.buildSessionFactory();
//更具factory创建session
s = sf.openSession();//开启Session，相当于开启JDBC的Connection
ts = s.beginTransaction();//创建事物的对象ts
}
/**
* 添加信息到数据库
* @param name
* @param age
* @return
*/
public int AddUser(User u){
int r=1;
User user = new User();
user.setName(u.getName());
user.setAge(u.getAge());
try{
s.save(user);
ts.commit();
}catch(Exception e){
e.printStackTrace();
ts.rollback();
System.out.println("添加失败！！");
r=0;
}finally{
s.close();
sf.close();
}
return r;
}
/**
* 删除数据库信息
* @param id
* @return
*/
public int DeletUser(int id){
int r =1;
User user = new User();
user.setId(id);
try{
s.delete(user);
ts.commit();
}catch(Exception e){
e.printStackTrace();
ts.rollback();
System.out.println("删除失败！！");
r=0;
}finally{
s.close();
sf.close();
}
return r;
}
/**
* 更新数据库信息
* @param u
* @return
*/
public int UpdateUser(User u){
int r=1;
User user = (User)s.get(User.class, u.getId());
if(u.getAge()!=0){
user.setAge(u.getAge());
}
if(u.getName().length()!=0){
user.setName(u.getName());
}
try{
s.update(user);
ts.commit();
}catch(Exception e){
e.printStackTrace();
ts.rollback();
System.out.println("更新失败！！");
r=0;
}finally{
s.close();
sf.close();
}
return r;
}
/**
* 查询数据库所有信息
* @return
*/
public List QueryUser(){
User user = new User();
Query query = s.createQuery("from User");//注意！！这里是：from 实例类名
List users = query.list();//序列化
//迭代
Iterator it = users.iterator();
while(it.hasNext()){
user=(User)it.next();
System.out.println(user.getId()+"号"+user.getName()+" "+user.getAge()+"岁");
}
return users;
}
/**
* 查询数据库所有名字是name的信息
* @param name
* @return
*/
public List FindUserByName(String name){
User user = new User();
Query query = s.createQuery("from User where name='"+name+"'");//注意！！这里是：from 实例类名
List users = query.list();//序列化
//迭代
Iterator it = users.iterator();
while(it.hasNext()){
user=(User)it.next();
System.out.println(user.getId()+"号"+user.getName()+" "+user.getAge()+"岁");
}
return users;
}
/**
* 查询数据库所有id是id的信息
* @param id
* @return
*/
public User FindUserById(int id){
User user = (User)s.get(User.class, id);
return user;
}
}
（6）数据库的增删查改
A：添加信息到数据库
package action;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import entity.User;
import dao.DAO;
public class Add extends HttpServlet{
public void service(HttpServletRequest request,HttpServletResponse response){
String mess="添加用户信息成功！！";
String user = "minuobaci";
int age = 12;
User u = new User();
u.setAge(age);
u.setName(user);
DAO dao = new DAO();
int r = dao.AddUser(u);
if(r==0){
mess="添加用户信息失败！！";
System.out.println("添加用户信息失败！！");
}
try {
request.setAttribute("mess", mess);
request.getRequestDispatcher("/all").forward(request, response);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
B：删除数据库信息
package action;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import dao.DAO;
public class Delete extends HttpServlet{
public void service(HttpServletRequest request,HttpServletResponse response){
String mess="删除用户信息成功！！";
int id = 1;
DAO dao = new DAO();
int r = dao.DeletUser(id);
if(r==0){
mess="删除用户信息失败！！";
System.out.println("删除用户信息失败！！");
}
try {
request.setAttribute("mess", mess);
request.getRequestDispatcher("/all").forward(request, response);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
C：遍历数据库所有信息
package action;
import java.util.List;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import entity.User;
import dao.DAO;
public class Find extends HttpServlet{
public void service(HttpServletRequest request,HttpServletResponse response){
String user = "minuobaci";
DAO dao = new DAO();
List lists = dao.FindUserByName(user);
for(User u:lists){
System.out.println("username: "+u.getId()+" age:"+u.getName())
}
}
}
SSH
1：创建web项目并导入对应的jar包
2：修改web.xml文件如下
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<!-- spring 监听器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<!-- 指定struts2的核心过滤器 -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
3：创建实体类
package com.gx.entity;
public class User {
private int id;
private String name;
private int age;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
public String toString() {
return "User [id=" + id + ", name=" + name + ", age=" + age + "]";
}
}
4：创建实体类对应的hibernate配置文件
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="org.hibernate.test.array">
<!-- 在class里面，name是实体类的类名，table表示对应的表名 -->
<class name="com.gx.entity.User" lazy="true" table="user">
<!-- name="id"表示entity.User表里面的id属性，colum="id"表示user表的字段名为id -->
<!-- 如果name和colum的值一样，不需要写colum -->
<id name="id" column="id">
<generator class="native"/><!-- 表示user表里面的id字段是自增型的 -->
</id>
<!-- 其他属性使用property标签来映射 -->
<property name="name" column="name"/>
<property name="age" column="age"/>
</class>
</hibernate-mapping>
5：创建spring配置文件applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<bean name="sf"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="ds" />
<property name="mappingResources">
<list>
<value>com/gx/entity/User.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.show_sql=true
hbm2ddl.auto=update
</value>
</property>
</bean>
<bean name="ds"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3307/test?characterEncoding=UTF-8" />
<property name="username" value="root" />
<property name="password" value="root" />
</bean>
</beans>
6：创建Dao接口
package com.gx.dao;
import java.util.List;
import com.gx.entity.User;
public interface UserDAO {
//增加用户
public int addUser(User user);
//删除用户
public int deleteUser(User user);
//通过id查询用户
public User findUserById(int id);
//通过用户名查询用户
public List<User> findUserByName(String name);
//查询所有用户
public List<User> findAll();
//修改用户
public int updateUser(User user);
}
7：创建Dao接口的实现类
package com.gx.dao;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import com.gx.entity.User;
public class UserDAOImp extends HibernateDaoSupport implements UserDAO{
/**
* 增加用户
*/
public int addUser(User user){
int r=1;
System.out.println("########################################");
try{
this.getHibernateTemplate().save(user);
System.out.println("在UserDAOImp里面的addUser方法中添加用户成功！！");
System.out.println("########################################");
}catch(Exception e){
r=0;
System.out.println("在UserDAOImp里面的addUser方法中添加用户失败……");
System.out.println("########################################");
}
return r;
}
/**
*删除用户
*/
public int deleteUser(User user){
int r=1;
System.out.println("########################################");
try{
this.getHibernateTemplate().delete(user);
System.out.println("在UserDAOImp里面的deleteUser方法中删除用户成功！！");
System.out.println("########################################");
}catch(Exception e){
r=0;
System.out.println("在UserDAOImp里面的deleteUser方法中删除用户失败……");
System.out.println("########################################");
}
return r;
}
/**
* 通过用户名查询用户
*/
public List<User> findUserByName(String name){
ApplicationContext context =
new ClassPathXmlApplicationContext(new String[] { "applicationContext.xml" });
SessionFactory lsf = (SessionFactory) context.getBean("sf");
Session session = lsf.openSession();
Transaction t = session.beginTransaction();
String hql="from User where name='"+name+"'";
System.out.println("########################################");
System.out.println("在UserDAOImp里面的findUserByName方法中hql="+hql);
System.out.println("########################################");
List<User> users = session.createQuery(hql).list();
return users;
}
/**
* 查询所有用户
*/
public List<User> findAll(){
return this.getHibernateTemplate().find("from User");
}
/**
* 通过id查询用户
*/
public User findUserById(int id){
return (User)this.getHibernateTemplate().get(User.class, id);
}
/**
* 修改用户
*/
public int updateUser(User user){
int r=1;
System.out.println("########################################");
try{
this.getHibernateTemplate().update(user);
System.out.println("在UserDAOImp里面的updateUser方法中更新用户成功！！");
System.out.println("########################################");
}catch(Exception e){
r=0;
System.out.println("在UserDAOImp里面的updateUser方法中更新用户失败……");
System.out.println("########################################");
}
return r;
}
}
8：在applicationContext.xml添加以下代码
<bean name="UserDAO" class="com.gx.dao.UserDAOImp">
<property name="sessionFactory" ref="sf" />
</bean>
9：创建Service接口
package com.gx.service;
import java.util.List;
import com.gx.entity.User;
public interface UserService {
//添加用户
public String addUser(User user);
//通过id查询用户
public User findUserByID(int id);
//查询所有用户
public List<User> findAll ();
//通过用户名查询
public List<User> findUserByName(String name);
//删除用户
public String deleteUser(User user);
//更新用户
public String updateUser(User user);
}
10：创建Service接口的实现类
package com.gx.service;
import java.util.List;
import com.gx.dao.UserDAO;
import com.gx.entity.User;
public class UserServiceImp implements UserService{
private UserDAO udao;
public UserDAO getUdao() {
return udao;
}
public void setUdao(UserDAO udao) {
this.udao = udao;
}
/**
* 更新用户
*/
public String updateUser(User user){
System.out.println("***********************************************");
System.out.println("正在执行UserServiceImp中的updateUser方法……");
System.out.println("***********************************************");
int r = udao.updateUser(user);
if(r==0)
return "更新失败！！";
else
return "ok";
}
/**
* 添加用户
*/
public String addUser(User user){
System.out.println("***********************************************");
System.out.println("正在执行UserServiceImp中的addUser方法……");
System.out.println("***********************************************");
int r = udao.addUser(user);
if(r==0)
return "添加用户失败！！";
return "ok";
}
/**
* 查询所有用户
*/
public List<User> findAll (){
return udao.findAll();
}
/**
* 通过用户名查询
*/
public List<User> findUserByName(String name){
System.out.println("***********************************************");
System.out.println("正在执行UserServiceImp中的findUserByName方法……");
System.out.println("***********************************************");
return udao.findUserByName(name);
}
/**
* 删除用户
*/
public String deleteUser(User user){
System.out.println("***********************************************");
System.out.println("正在执行UserServiceImp中的deleteUser方法……");
System.out.println("***********************************************");
int r = udao.deleteUser(user);
if(r==0)
return "删除用户失败！！";
else
return "ok";
}
/**
* 通过id查询用户
*/
public User findUserByID(int id){
return udao.findUserById(id);
}
}
11：在applicationContext.xml里面添加以下代码
<bean id="UserService" class="com.gx.service.UserServiceImp">
<property name="udao" ref="UserDAO"></property>
</bean>
12：创建Action接口
package com.gx.action;
public interface UserAction {
//添加用户
public String add();
//显示所有的用户
public String show();
//显示所查询的用户
public String find();
//删除用户
public String delete();
//更新用户,获得用户信息
public String updateGet();
//更新用户 更新信息
public String update();
}
13：创建Action的实现类
package com.gx.action;
import java.util.List;
import com.gx.service.UserService;
import com.gx.entity.User;
public class UserActionImp implements UserAction{
private UserService uservice;
private List<User> users;
private User user;
private String mess;
public String getMess() {
return mess;
}
public void setMess(String mess) {
this.mess = mess;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public UserService getUservice() {
return uservice;
}
public void setUservice(UserService uservice) {
this.uservice = uservice;
}
public List<User> getUsers() {
return users;
}
public void setUsers(List<User> users) {
this.users = users;
}
/**
* 添加用户
*/
public String add(){
System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
System.out.println("在UserActionImp中的add方法中");
System.out.println(user.toString());
System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
mess = uservice.addUser(user);
if(mess.equals("ok")){
users = uservice.findAll();
return "addtrue";
}else{
return "addfalse";
}
}
/**
* 显示所有的用户
*/
public String show(){
users = uservice.findAll();
return "addtrue";
}
/**
* 显示所查询的用户
*/
public String find(){
System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
System.out.println("正在执行UserActionImp中的find方法……");
System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
users = uservice.findUserByName(user.getName());
return "addtrue";
}
/**
* 删除用户
*/
public String delete(){
System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
System.out.println("正在执行UserActionImp中的delete方法……");
System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
User u = uservice.findUserByID(user.getId());
mess = uservice.deleteUser(u);
if(mess.equals("ok"))
mess="删除用户成功！！";
users = uservice.findAll();
return "addtrue";
}
/**
* 更新用户 ， 获得用户信息
*/
public String updateGet(){
user = uservice.findUserByID(user.getId());
return "updatetrue";
}
/**
* 更新用户信息 ， 更新用户信息
*/
public String update(){
System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
System.out.println("正在执行UserActionImp中的update方法……");
System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
User u = uservice.findUserByID(user.getId());
u.setAge(user.getAge());
u.setName(user.getName());
mess = uservice.updateUser(u);
if(mess.equals("ok")){
users = uservice.findAll();
return "addtrue";
}
return "updatetrue";
}
}
14：在applicationContext.xml文件里面添加以下代码
<bean id="User" class="com.gx.action.UserActionImp">
<property name="uservice" ref="UserService"></property>
</bean>
15：创建Struts2配置文件struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="default" extends="struts-default">
<action name="user_*" class="User" method="{1}">
<result name="addtrue">/index.jsp</result>
<result name="addfalse">/addUser.jsp</result>
<result name="updatetrue">/updateUser.jsp</result>
</action>
</package>
</struts>
16：创建index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath =
request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>主页面</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="css/index.css">
</head>
<body>
<form action="user_find" method="post">
<input id="find" type="text" name="user.name" placeholder="请输入需要查找的用户名" />
<input id="fs" type="submit" value="查询" />
</form>
<hr>
<div id="mess">${mess}</div>
<table id="table">
<tr>
<td>用户id</td>
<td>用户名</td>
<td>用户年龄</td>
<td>更新用户</td>
<td>删除用户</td>
</tr>
<c:forEach items="${users}" var="user">
<tr>
<td>${user.id}</td>
<td>${user.name}</td>
<td>${user.age}</td>
<td><a style="color:yellow" href="user_updateGet?user.id=${user.id}">更新</a></td>
<td><a style="color:red" href="user_delete?user.id=${user.id}">删除</a></td>
</tr>
</c:forEach>
</table>
</body>
</html>
17：创建addUser.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath =
request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>添加用户</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
</head>
<body>
<div id="mess">${mess}</div>
<div id="back">
<div id="title">添加用户|ADD</div>
<form action="user_add" method="post">
<div id="bottom">
<br/>
<input class="input" name="user.name" type="text" placeholder="请输入用户名" /><br/>
<input class="input" name="user.age" type="text" placeholder="请输入用户年龄" /><br/>
<br/><a id="a" href="user_show">返回主页面</a><br/>
<input id="up" type="submit" value="添加" /><br/><br/>
</div>
</form>
</div>
</body>
</html>
18：创建updateUser.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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>更新用户</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">
</head>
<body>
<div id="mess">${mess}</div>
<div id="back">
<div id="title">更新用户|UPDATE</div>
<form action="user_update" method="post">
<div id="bottom">
<br/>
请输入用户名
<input class="input" name="user.name" value="${user.name}" type="text"/><br/>
请输入用户年龄
<input class="input" name="user.age" value="${user.age}" type="text"/><br/>
<br/><a id="a" href="user_show">返回主页面</a><br/>
<input id="up" type="submit" value="添加" /><br/><br/>
</div>
</form>
</div>
</body>
</html>
