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Spring MVC+Mybatis 框架整合（二）

2014-12-24 17:10 295 查看

@大家好，我是”一个坏小子“

在上篇Spring MVC+Mybatis 框架整合（一）中，我对Spring
MVC+Mybatis 进行了整合，接下来，我将通过一个简单的实例进行测试；

一、本例所用数据库为MySQL,在MySQL中建立数据库，并创建一个user表；（数据库名须与config.properties中的对应）

本例user表设计四个属性，id,name,pwd,age;

二、在index.jsp中添加一个超链接

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head> </head>
<body>
<a href="showUser.do">显示人员</a>
</body>
</html>

三、在com.gcs.controller添加获取用户提交的*.do请求的类：UserController.java

package com.gcs.controller;

import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.gcs.service.UserService;
import com.gcs.model.User;

@Controller
public class UserController {

@Autowired
private UserService userService;

@SuppressWarnings("finally")
@RequestMapping(value = "/showUser.do", method = RequestMethod.GET)
public String showUser(User user, HttpServletRequest request) {
{
try {
List<User> str = userService.getAll();
request.setAttribute("data", str);
} catch (Exception e) {
e.printStackTrace();
request.setAttribute("InfoMessage",
"更新信息失败！具体异常信息：" + e.getMessage());
} finally {
return "/list";
}
}
}
}

四、在service层添加业务逻辑处理类 UserService.java

package com.gcs.service;

import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.gcs.dao.UserMapper;
import com.gcs.model.User;

@Service
public class UserService {

@Autowired
UserMapper userMapper;

public List<User> getAll() {
return userMapper.getAll();
}

}

五、在dao层中添加操纵数据库的操作类：UserMapper.java

package com.gcs.dao;

import java.util.List;
import com.gcs.model.User;

public interface UserMapper {
int deleteByPrimaryKey(String id);

List<User> getAll();
}

六、在mapping中添加动态sql文件：UserMapper.xmll

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.gcs.dao.UserMapper">
<resultMap id="BaseResultMap" type="com.gcs.model.User">
<id column="id" property="id" jdbcType="VARCHAR" />
<result column="name" property="name" jdbcType="VARCHAR" />
<result column="pwd" property="pwd" jdbcType="VARCHAR" />
</resultMap>

<select id="getAll" resultMap="BaseResultMap">
SELECT * FROM user
</select>
</mapper>

七、在model层添加实体类：User.java

package com.gcs.model;

public class User {
private String id;
private String name;
private String pwd;
private int age;

public String getId() {
return id;
}

public void setId(String id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getPwd() {
return pwd;
}

public void setPwd(String pwd) {
this.pwd = pwd;
}

public int getAge() {
return age;
}

public void setAge(int age) {
this.age = age;
}
}
八、在WebRoot / jsp / 下，添加list.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<table border="1">
<tr>
<td>编号</td>
<td>用户名</td>
<td>密码</td>
<td>年龄</td>
</tr>
<c:forEach var="list" items="${data}">
<tr>
<td>${list.id}</td>
<td>${list.name}</td>
<td>${list.pwd}</td>
<td>${list.age}</td>
</tr>
</c:forEach>
</table>
</body>
</html>

九、测试的所有文件都已搭建完成，把项目发布到tomcat中，通过浏览器就可以看到结果，效果图如下：

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标签： spring mvc mybatis 实例 mysql

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