需要的jar包：
項目結構：
配置文件的配置：
beans.xml（spring 的配置文件）
<?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"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"
>
<!-- 數據源-->
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
<!-- 自動掃描controller包下的所有類，使其認爲spring mvc的控制器 -->
<context:component-scan base-package="com.springmvc.controller" />
<!-- 對模型視圖名稱的解析，即在模型視圖名稱添加前後綴 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/" p:suffix=".jsp" />
</beans>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration><!-- 可以配置一個項目的多個映射類-->web.xml的配置：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>SpringMVC</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:config/beans.xml</param-value>
</context-param>
<!-- spring的監聽器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener><!-- 配置springmvc--><!-- 防止出現session異常-->至此，所有的配置文件就配置好了，剩下的就是業務邏輯代碼了。
springmvc的controller：
usercontroller.java:
package com.springmvc.controller;
import java.io.OutputStream;
import java.net.URLDecoder;
import java.util.List;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import com.springmvc.bean.User;
import com.springmvc.dao.IUserDao;
/**springmvc的控制類
*
* @author 董政
*
*/
@Controller
@RequestMapping("/user")
public class UserController {
@Resource
private IUserDao userservice;
/**
* 更新用戶操作
* @param user 用戶對象
* @param req
* @param rep
*/
@RequestMapping("/update")
public void update(User user,HttpServletRequest req,HttpServletResponse rep){
try {
rep.setContentType("text/html;charset=UTF-8");
//獲得輸出流
OutputStream printWriter=null;
printWriter=rep.getOutputStream();
//對字符串進行轉碼操作
User newuser=null;
//轉碼字符串 ，防止亂碼
newuser=new User(Integer.parseInt(URLDecoder.decode(user.getUserId().toString(), "utf-8")), URLDecoder.decode(user.getUserName(), "utf-8"), URLDecoder.decode(user.getAge(), "utf-8"));
userservice.update(newuser);
printWriter.write("su".getBytes());
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* 初始化界面
* @return
*/
@RequestMapping("/index")
public String toIndex(HttpServletRequest req,HttpServletResponse rep){
//查找集合
List<User> users=userservice.getAllUsers();
//放入作用域中
req.setAttribute("userlist", users);
return "Index";
}
/**
* 進入添加界面
* @return
*/
@RequestMapping("/toadd")
public String toAdd(){
return "add";
}
/**
* 初始化更新界面
* @param req
* @param id
* @return
*/
@RequestMapping("/toUpdate")
public String toUpdate(HttpServletRequest req,Integer id){
//查找要更新的數據
User user=userservice.getUsrById(id);
//放入作用域
req.setAttribute("user", user);
return "Userinfo";
}
/**
* 刪除操作
* @param req 請求
* @param id 刪除的id
* @param rep 響應
* @return
*/
@RequestMapping("/del")
public String del(HttpServletRequest req,Integer id,HttpServletResponse rep){
//刪除對應的數據庫數據
userservice.delUser(id);
//獲取數據集合
List<User> users=userservice.getAllUsers();
//放入作用域
req.setAttribute("userlist", users);
return "Index";
}
/**
* 添加操作
* @param name 用戶名
* @param age 年齡
* @param rep 響應
*/
@RequestMapping("/add")
public void add(String name,String age,HttpServletResponse rep){
try {
//設置ajax的返回類型
rep.setContentType("text/html;charset=UTF-8");
//獲得輸出流
OutputStream printWriter=null;
//ʵ實例化輸出流
printWriter=rep.getOutputStream();
User user=null;
user = new User(null, URLDecoder.decode(name,"utf-8"), URLDecoder.decode(age,"utf-8"));
userservice.addUser(user);
//提示信息
printWriter.write("su".getBytes());
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
package com.springmvc.dao;
import java.util.List;
import com.springmvc.bean.User;
public interface IUserDao {
/**
* 添加用戶操作
* @param user 用戶
*/
public void addUser(User user);
/**
* 用戶集合
* @return 集合類型
*/
public List<User> getAllUsers();
/**
* ͨ根據用戶iD查詢
* @param id
* @return user
*/
public User getUsrById(Integer UserId);
/**
* ɾ刪除用戶
* @param userId
*/
public void delUser(Integer user);
/**
* 更新用戶
* @param user
*/
public void update(User user);
}
junit測試類：
package com.test;
import java.util.List;
import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.springmvc.bean.User;
import com.springmvc.dao.IUserDao;
public class TestUser {
private static IUserDao userDao;
@BeforeClass
public static void setUpBeforeClass() throws Exception {
ApplicationContext cxt=new ClassPathXmlApplicationContext("/config/beans.xml");
userDao= (IUserDao) cxt.getBean("userService");
}
@Test
public void test() {
userDao.addUser(new User(null, "董政", "26"));
}
@Test
public void update(){
userDao.update(new User(1, "sss", "11"));
}
@Test
public void getAll(){
List<User> list=userDao.getAllUsers();
System.out.println(list.size());
}
@Test
public void getOne(){
System.out.println(userDao.getUsrById(1).getAge());
}
@Test
public void del(){
userDao.delUser(3);
}
}
截圖：
