• Spring + mybatis整合方案总结 结合实例应用

    Spring + mybatis整合方案总结 结合实例应用

     
     

    Spring + mybatis整合实例应用

    项目结构图 (Spring3.0.2 +mybatis3.0.4)

    方案一: 通过配置文件整合Spring和mybatis 
    应用数据库

    复制代码
    --
--数据库 tb_user
--

drop table if exists tb_user;

create table tb_user(
    id int primary key auto_increment comment '主键',
    username varchar(40) not null unique comment '用户名',
    password varchar(40) not null comment '密码',
    email varchar(40) comment '邮件',
    age int  comment '年龄',
    sex char(2) not null comment '性别'
);
    复制代码

    对应的实体类

    复制代码
    package com.icreate.entity;
/**
 * 
 *
 *  @version ： 1.0
 *  
 *  @author  ： 苏若年              <a href="mailto:DennisIT@163.com">发送邮件</a>
 *    
 *  @since   ： 1.0        创建时间:    2013-4-9    上午11:15:50
 *     
 *  @function： TODO        
 *
 */
public class User {
    
    private int id;
    private String username;
    private String password;
    private String sex;
    private String email;
    private int age;
     
    //getter() and  setter ()    
}
    复制代码

    数据Dao接口 

    复制代码
    package com.icreate.dao;

import java.util.List;

import com.icreate.entity.User;

/**
 * 
 *
 *  @version ： 1.0
 *  
 *  @author  ： 苏若年              <a href="mailto:DennisIT@163.com">发送邮件</a>
 *    
 *  @since   ： 1.0        创建时间:    2013-4-9    上午11:36:34
 *     
 *  @function： TODO        
 *
 */
public interface UserDao {

    public int insert(User user);
     
    public int update(User user);
   
    public int delete(String userName);
   
    public List<User> selectAll();
   
    public int countAll();
   
    public User findByUserName(String userName);

}
    复制代码

    在config目录下进行Mapper文件配置

    复制代码
    <?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.icreate.dao.UserDao">
    <select id="countAll" resultType="int">  <!-- 查询表中记录总数 -->
        select count(*) c from tb_user;
    </select>
    
    <select id="selectAll" resultType="com.icreate.entity.User">    <!-- 查询表中的所有用户 -->
        select * from tb_user order by username asc
    </select>
    
    <insert id="insert" parameterType="com.icreate.entity.User">    <!-- 向数据库中插入用户 -->
        insert into tb_user(username,password,email,sex,age) values(#{username},#{password},#{email},#{sex},#{age})
    </insert>
    
    <update id="update" parameterType="com.icreate.entity.User">     <!-- 更新库中的用户 -->
        update tb_user set username=#{username},password=#{password},email=#{email},sex=#{sex},age=#{age} where username=#{username}
    </update>
    
    <delete id="delete" parameterType="String">    <!-- 删除用户 -->
        delete from tb_user where username=#{username}
    </delete>
    
    <select id="findByUserName" parameterType="String" resultType="com.icreate.entity.User"> <!-- 根据用户名查找用户 -->
        select * from tb_user where username=#{username}
    </select>
</mapper>
    复制代码

    Mybatis应用配置文件MyBatis-Configuration.xml

    复制代码
    <?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>
    <mappers>
        <mapper resource="com/icreate/dao/UserDao.xml"/>
    </mappers>
</configuration>
    复制代码

    Spring配置文件,本例中我们放在/WebRoot/WEB-INF/applicationContext.xml

    复制代码
    <?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"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
    
    <!-- 配置数据源 -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
         <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
        <property name="url" value="jdbc:mysql://localhost:3306/db_mybatis?useUnicode=true&amp;characterEncoding=UTF-8&amp;zeroDateTimeBehavior=convertToNull"></property>
        <property name="username" value="root"></property>
        <property name="password" value="root"></property>
    </bean>
    
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" /> 
    </bean>
    
    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="configLocation" value="classpath:MyBatis-Configuration.xml"></property>
        <property name="dataSource" ref="dataSource" />
    </bean>
    

    <bean id="userDao" class="org.mybatis.spring.mapper.MapperFactoryBean">
         <property name="mapperInterface" value="com.icreate.dao.UserDao"></property>
         <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
    </bean>                
    
    <bean id="userService" class="com.icreate.service.impl.UserServiceImpl">
        <property name="userDao" ref="userDao"></property>
    </bean>

</beans>
    复制代码

    同目录下的web.xml文件进行如下配置

    复制代码
    <?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd">

    <context-param>
        <param-name>contextConfigLocation</param-name>
            <!-- applicationContext.xml文件在/WEB-INF/目錄下時可以這樣配置,-->
            <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>
    
    <!-- 配置上下文监听 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>
    复制代码

    配置说明:

    <context-param/> 节点配置contextConfigLocation属性是为了让ContextLoaderListener找到Spring上下文的位置并加载它，如果不指定contextConfigLocation，ContextLoaderListener会到/WEB-INF/目录下找applicationContext.xml来加载。

    <listener/>  节点上配了ContextLoaderListener。它实现了ServletContextListener接口，所以web server启动时ContextLoaderListener能读取到ServletContext，也就能通过<context-param/>指定的Spring上下文的路径来找到上下文并加载它。

    当然，如果你不需要Spring来管理你的Bean，可以去掉上面两个节点。

    定义service接口

    复制代码
    package com.icreate.service;

import java.util.List;

import com.icreate.entity.User;

/**
 * 
 *
 *  @version ： 1.0
 *  
 *  @author  ： 苏若年              <a href="mailto:DennisIT@163.com">发送邮件</a>
 *    
 *  @since   ： 1.0        创建时间:    2013-4-9    下午03:52:07
 *     
 *  @function： TODO        
 *
 */
public interface UserService {
    
    public int insert(User user);
     
    public int update(User user);
   
    public int delete(String userName);
   
    public List<User> selectAll();
   
    public int countAll();
   
    public User findByUserName(String userName);
}
    复制代码

    实现service接口,执行dao操作

    复制代码
    package com.icreate.service.impl;

import java.util.List;

import com.icreate.dao.UserDao;
import com.icreate.entity.User;
import com.icreate.service.UserService;

/**
 * 
 *
 *  @version ： 1.0
 *  
 *  @author  ： 苏若年              <a href="mailto:DennisIT@163.com">发送邮件</a>
 *    
 *  @since   ： 1.0        创建时间:    2013-4-9    下午03:53:26
 *     
 *  @function： TODO        
 *
 */
public class UserServiceImpl implements UserService{

    private UserDao userDao;
    
    public UserDao getUserDao() {
        return userDao;
    }

    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }

    public int countAll() {
        return this.userDao.countAll();
    }

    public int delete(String userName) {
        return this.userDao.delete(userName);
    }

    public User findByUserName(String userName) {
        return this.userDao.findByUserName(userName);
    }

    public int insert(User user) {
        return this.userDao.insert(user);
    }

    public List<User> selectAll() {
        return this.userDao.selectAll();
    }

    public int update(User user) {
         return this.userDao.update(user);
    }

}
    复制代码

    接下来写我们的测试用例 

    复制代码
    package com.icreate.service;

import java.util.List;

import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;

import com.icreate.entity.User;


/**
 * 
 *
 *  @version ： 1.0
 *  
 *  @author  ： 苏若年              <a href="mailto:DennisIT@163.com">发送邮件</a>
 *    
 *  @since   ： 1.0        创建时间:    2013-4-9    下午05:16:28
 *     
 *  @function： TODO        
 *
 */
public class SpringBatis {
    
    ApplicationContext context = null;
    UserService userService = null;
    
    @Before
    public void initContext(){
        this.context = new FileSystemXmlApplicationContext("WebRoot/WEB-INF/applicationContext.xml");
        this.userService = (UserService) context.getBean("userService");
    }
    
    
    @Test
    public void countAll(){
        System.out.println("数据库中的记录条数:"  + userService.countAll());
    }
    
    @Test
    public void insert(){
        User user = new User();
        user.setUsername("苏若年");
        user.setPassword("passtest");
        user.setEmail("dennisit@163.com");
        user.setSex("男");
        user.setAge(23);
        userService.insert(user);
    }
    
    @Test
    public void selectAll(){
        List<User> list = userService.selectAll();
        for(int i=0; i<list.size(); i++){
            User user = list.get(i);
            System.out.println("用户名:" + user.getUsername() + "\t密码:" + user.getPassword() + "\t邮箱：" + user.getEmail());
        }
    }
    
    @Test
    public void update(){
        User user = new User();
        user.setUsername("苏若年");
        user.setPassword("xxxxxxxx");
        user.setEmail("xxxxxx@163xxx");
        user.setSex("男");
        user.setAge(23);
        userService.update(user);
    }
    
    @Test
    public void delete(){
        userService.delete("苏若年");
    }
    
    @Test
    public void findByName(){
        User user = userService.findByUserName("苏若年");
        System.out.println("用户名:" + user.getUsername() + "\t密码:" + user.getPassword() + "\t邮箱：" + user.getEmail());

    }
}
    复制代码

     

    方案二:使用注解整合
    这次将配置文件放置在config目录下.

    数据库表与实体类同上

    数据dao接口定义

    复制代码
    package com.icreate.dao;

import java.util.List;

import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;

import com.icreate.entity.User;

/**
 * 
 *
 *  @version ： 1.0
 *  
 *  @author  ： 苏若年              <a href="mailto:DennisIT@163.com">发送邮件</a>
 *    
 *  @since   ： 1.0        创建时间:    2013-4-9    上午11:36:34
 *     
 *  @function： TODO        
 *
 */
public interface UserDao {

     @Insert("insert into tb_user(username,password,email,sex,age) values(#{username},#{password},#{email},#{sex},#{age})")
     public int insert(User user);
     
     @Update("update tb_user set username=#{username},password=#{password},email=#{email},sex=#{sex},age=#{age} where username=#{username}")
     public int update(User user);
    
     @Delete("delete from tb_user where username=#{username}")
     public int delete(String userName);
    
     @Select("select * from tb_user ")
     public List<User> selectAll();
    
     @Select("select count(*) from tb_user")
     public int countAll();
    
     @Select("select * from tb_user where username=#{username}")
     public User findByUserName(String userName);
    
}
    复制代码

    Service接口与实现不变.

    Spring配置文件内容如下 

    复制代码
    <?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"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
    
    <!-- 配置数据源 -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
         <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
        <property name="url" value="jdbc:mysql://localhost:3306/db_mybatis?useUnicode=true&amp;characterEncoding=UTF-8&amp;zeroDateTimeBehavior=convertToNull"></property>
        <property name="username" value="root"></property>
        <property name="password" value="root"></property>
    </bean>
    
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" /> 
    </bean>
    
    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
    </bean>
    

    <bean id="userDao" class="org.mybatis.spring.mapper.MapperFactoryBean">
         <property name="mapperInterface" value="com.icreate.dao.UserDao"></property>
         <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
    </bean>                
    
    <bean id="userService" class="com.icreate.service.impl.UserServiceImpl">
        <property name="userDao" ref="userDao"></property>
    </bean>

</beans>
    复制代码

    Web.xml文件配置如下

    复制代码
    <?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd">

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <!-- applicationContext.xml文件在/WEB-INF/目錄下時可以這樣配置,-->
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

    <!-- 配置上下文监听 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
    
</web-app>
    复制代码

    测试类大致上没有变化,只是ApplicationContext初始化的方法改变成了下面方式

    复制代码
        ApplicationContext context = null;
    UserService userService = null;
    
    @Before
    public void initContext(){
        this.context = new ClassPathXmlApplicationContext("applicationContext.xml");
        //this.context = new FileSystemXmlApplicationContext("WebRoot/WEB-INF/applicationContext.xml");
        this.userService = (UserService) context.getBean("userService");
    }
    复制代码

    至此我们Spring与mybatis整合实例应用演示完毕

    转载请注明出处:[http://www.cnblogs.com/dennisit/archive/2013/04/10/3012972.html]

    热爱生活,热爱Coding,敢于挑战,用于探索 ...
     
    分类: JavaEE
    标签: spring, mybatis
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  • 原文地址：https://www.cnblogs.com/Leo_wl/p/3013299.html
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