spring+sprngMVC+mybatis整合

1 项目目录

2 所需要的包

3 数据库建表

4 user  bean类

package com.db.springmvc.pojo;


public class User {
private Long id;
private String username;
private String password;


public Long getId() {
return id;
}


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


public String getUsername() {
return username;
}


public void setUsername(String username) {
this.username = username;
}


public String getPassword() {
return password;
}


public void setPassword(String password) {
this.password = password;
}


@Override
public String toString() {
return "User [username=" + username + ", password=" + password + "]";
}


}

5 user对应的 mapper映射xml

<?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.db.springmvc.dao.UserDao">
<!-- 取得用户列表 -->
<select id="getUser" resultType="User" parameterType="User">
select
id,
username,
password
From user
where username =#{username} and password
=#{password}
and id=#{id}
</select>
<!-- 新增用户 -->
<insert id="insertUser" parameterType="User">
insert into user(username,password)
values(#{username},#{password})
</insert>
<!-- 修改用户 -->
<update id="updateUser" parameterType="User">
update user
<set>
<if test="username != null">username=#{username},</if>
<if test="password != null">password=#{password},</if>
</set>
where id=#{id}
</update>
<!-- 删除用户 -->
<delete id="deleteUser" >
delete from user where
id=#{id}
</delete>


</mapper>

 

6 dao层接口

package com.db.springmvc.dao;


import java.util.List;


import com.db.springmvc.pojo.User;


public interface UserDao {
public  List<User> getUsers();
public User getUser(User user);
public void insertUser(User user);
public int updateUser(User user);
public int deleteUser(int id);
}

7 service层接口

package com.db.springmvc.service;


import java.util.List;


import com.db.springmvc.pojo.User;


public interface UserService {
public List<User> getUsers() throws Exception;
public User getUserInfo(User user) throws Exception;
public void saveUser(User user) throws Exception;
public int deleteUser(int id) throws Exception;
}

8 service接口实现类

package com.db.springmvc.service.impl;


import java.util.List;


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;


import com.db.springmvc.dao.UserDao;
import com.db.springmvc.pojo.User;
import com.db.springmvc.service.UserService;
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserDao userDao;
@Override
public List<User> getUsers() throws Exception {
return userDao.getUsers();
}


@Override
public User getUserInfo(User user) throws Exception {
return userDao.getUser(user);
}


@Override
public void saveUser(User user) throws Exception {
if (user!=null&&user.getId()!=null) {
userDao.updateUser(user);
}else {
userDao.insertUser(user);
}
}


@Override
public int deleteUser(int id) throws Exception {
return userDao.deleteUser(id);
}


}

此时注意：@Service
                     public class UserServiceImpl implements UserService    实现类头加@service注释
     
            @Autowired
            private UserDao userDao;属相前加@Autowired 让其自动装配

8  配置spring的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"
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">
<!-- Root Context: defines shared resources visible to all other web components -->
<!-- 配置DataSource数据源 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url"
value="jdbc:mysql://localhost:3306/test?characterEncoding=utf-8" />
<property name="username" value="root" />
<property name="password" value="" />
<property name="maxActive" value="5" />
<property name="maxIdle" value="3" />
<property name="maxWait" value="1000" />
<property name="defaultAutoCommit" value="true" />
<property name="removeAbandoned" value="true" />
<property name="removeAbandonedTimeout" value="60" />
</bean>


<!-- 创建SqlSessionFactory，同时指定数据源 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
</bean>


</beans>  

9 配置mvc的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: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-3.0.xsd
  http://www.springframework.org/schema/context
  http://www.springframework.org/schema/context/spring-context-3.0.xsd">


<context:component-scan base-package="com.db.springmvc.*" />


<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>

9 配置user的spring对象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"
  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" >
     
         
<!-- 用户Dao -->
<bean id="userDao" class="org.mybatis.spring.mapper.MapperFactoryBean">  
     <property name="mapperInterface" value="com.db.springmvc.dao.UserDao" />  
     <property name="sqlSessionFactory" ref="sqlSessionFactory" />  
</bean>
 


</beans>


10 配置mybatis的xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"  
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<package name="com.db.springmvc.pojo" />
</typeAliases>
<mappers>
<mapper resource="com/db/springmvc/pojo/UserMapper.xml" />
</mappers>
</configuration> 

11 配置web.xml

<?xml version="1.0" encoding="UTF-8"?>  
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee   
    http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">  
      
<filter>  
    <filter-name>CharacterEncodingFilter</filter-name>  
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>  
    <init-param>  
        <param-name>encoding</param-name>  
        <param-value>utf-8</param-value>  
    </init-param>  
    <init-param>  
        <param-name>forceEncoding</param-name>  
        <param-value>true</param-value>  
    </init-param>  
</filter>  
<filter-mapping>  
    <filter-name>CharacterEncodingFilter</filter-name>  
    <url-pattern>/*</url-pattern>  
</filter-mapping>
      
    <!-- 监听spring上下文容器 -->  
    <listener>  
        <listener-class>  
            org.springframework.web.context.ContextLoaderListener  
        </listener-class>  
    </listener>  
      
    <!-- 加载spring的xml配置文件到 spring的上下文容器中 -->  
    <context-param>  
        <param-name>contextConfigLocation</param-name>  
        <param-value>classpath:*-context.xml</param-value>  
    </context-param>  
      
    <!-- 配置Spring MVC DispatcherServlet -->  
    <servlet>  
        <servlet-name>MVC</servlet-name>  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
        <!-- 初始化参数 -->  
        <init-param>  
            <!-- 加载SpringMVC的xml到 spring的上下文容器中 -->  
            <param-name>contextConfigLocation</param-name>  
            <param-value>  
                /WEB-INF/classes/mvc-context.xml  
            </param-value>  
        </init-param>  
        <load-on-startup>1</load-on-startup>  
    </servlet>  
  
    <!-- 配置DispatcherServlet所需要拦截的 url -->  
    <servlet-mapping>  
        <servlet-name>MVC</servlet-name>  
        <url-pattern>*.do</url-pattern>  
    </servlet-mapping>  
  
    <welcome-file-list>  
        <welcome-file>/WEB-INF/view/index.jsp</welcome-file>  
    </welcome-file-list>  
  
  
</web-app>  

12 index.jsp

<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>welcome!</title>
        <link rel="stylesheet" type="text/css" href="css/index.css"/>
    </head>
    <body>
     <a href="intoRegist.do">点击这里注册</a>
  </body>
</html>

13 regist.jsp

<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>


<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>


<body>
<form action="logo.do" method="post">
<label> <input type="text" name="username" placeholder="用户名" />
<input type="password" name="password" placeholder="密码" />
</label> <input type="submit" value="注册" />
</form>
</body>
</html>

14 编写控制器

package com.db.springmvc.controller;


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 org.springframework.web.servlet.ModelAndView;


import com.db.springmvc.pojo.User;
import com.db.springmvc.service.UserService;
@Controller
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("intoRegist")
public ModelAndView index() {
// 创建模型跟视图，用于渲染页面。并且指定要返回的页面为home页面
ModelAndView mav = new ModelAndView("regist");
return mav;
}



@RequestMapping(value="logo",method=RequestMethod.POST)
public ModelAndView regist(HttpServletRequest request,User user){
System.out.println(user);
try {
userService.saveUser(user);
} catch (Exception e) {
e.printStackTrace();
}
return new ModelAndView("index");
}
}

最后启动项目输入:

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