本人剛剛接觸mybatis，今天把它和spring整合起來用了一個上午==。

一開始是通過配置文件來配置，后來嘗試用了一下注解，覺得mybatis的注解真的有點惡心。。。一大坨的，所以我還是建議使用配置文件吧！

1.首先配置spring配置文件

 <!--數據源-->    <bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">        <property name="url" value="jdbc:MySQL://localhost:3306/test"/>        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>        <property name="username" value="root"/>        <property name="passWord" value="root"/>    </bean>    <!--mybatis 的 sqlsessionFactoryNean-->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <property name="dataSource" ref="datasource"/>        <property name="configLocation" value="classpath:conf.xml"/>        <property name="mapperLocations" value="classpath:com/seven/dao/*.xml"/>        <property name="typeAliasesPackage" value="com.seven.domain"/><!--指定實體類包，自動將實體類的簡單類名映射為別名-->    </bean>    <!--映射器接口,,,,有了 下面配置就不用了-->   <!-- <bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>        <property name="mapperInterface" value="com.seven.dao.UserMapper"/>    </bean>-->    <!--mybatis自動掃描加載sql映射文件:mapperScannerConfigurer-->    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">        <property name="basePackage" value="com.seven.dao"/><!--指定sql映射文件、接口所在的包-->        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>     </bean>    <!--事務管理器-->    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <property name="dataSource" ref="datasource"/>    </bean>    <!--聲明事務-->    <tx:annotation-driven transaction-manager="transactionManager"/>

2.mybatis本身的相關配置

<?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>    <settings>        <!-- 全局映射器啟用緩存 -->        <setting name="cacheEnabled" value="true" />        <!-- 查詢時，關閉關聯對象即時加載以提高性能 -->        <setting name="lazyLoadingEnabled" value="true" />        <!-- 設置關聯對象加載的形態，此處為按需加載字段(加載字段由SQL指              定)，不會加載關聯表的所有字段，以提高性能 -->        <setting name="aggressiveLazyLoading" value="false" />        <!-- 對于未知的SQL查詢，允許返回不同的結果集以達到通用的效果 -->        <setting name="mult數據庫超過25000秒仍未響應則超時 -->        <setting name="defaultStatementTimeout" value="25000" />    </settings>    <!-- 全局別名設置，在映射文件中只需寫別名，而不必寫出整個類路徑  -->   <!-- <typeAliases>        <typeAlias alias="TestBean"                   type="com.wotao.taotao.persist.test.dataobject.TestBean" />    </typeAliases>-->    <!-- 非注解的sql映射文件配置，如果使用mybatis注解，該mapper無需配置，但是如果mybatis注解中包含@resultMap注解，則mapper必須配置，給resultMap注解使用，交給spring管理了 -->    <!--<mappers>        <mapper resource="persist/test/orm/test.xml" />    </mappers>--></configuration>

3.實體，接口

package com.seven.domain;import java.util.Date;/** * Created by Seven on 2015/5/29. */public class User {    private int id;    private String loginName;    private String userName;    private String password;    public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    public String getLoginName() {        return loginName;    }    public void setLoginName(String loginName) {        this.loginName = loginName;    }    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;    }}

package com.seven.dao;import com.seven.domain.User;import org.springframework.transaction.annotation.Transactional;import java.util.List;/** * Created by Seven on 2015/5/29. */@Transactionalpublic interface UserMapper {    void save(User user);    void update(User user);    void delete(int id);    User findById(int id);    List<User> findAll();}

4.接下就是比較重要的一步，寫接口的映射文件，這樣就實驗了dao

<?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"><!--namespace必須是接口的全類名  --><mapper namespace="com.seven.dao.UserMapper">    <resultMap id="userResult" type="User">        <result column="id" property="id"/>        <result column="loginName" property="loginName"/>        <result column="userName" property="userName"/>        <result column="password" property="password"/>    </resultMap>    <!-- 取得插入數據后的id -->    <insert id="save">        insert into tb_user(loginName,userName,password)        values(#{loginName},#{userName},#{password})    </insert>    <update id="update">        update tb_user        set loginName = #{loginName},        userName = #{userName},        password = #{password}        where id = #{id}    </update>    <delete id="delete">        delete from tb_user        where id = #{id}    </delete>    <select id="findById" resultMap="userResult">        select *        from tb_user        where id = #{id}    </select>    <select id="findAll" resultMap="userResult">        select *        from tb_user    </select></mapper>

5.測試，需要導入spring的測試包

package com.seven.test;import com.seven.dao.UserMapper;import com.seven.domain.User;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import java.util.Date;/** * Created by Seven on 2015/5/29. */@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration("/application.xml")public class MyTest {    @Autowired    private UserMapper userMapper;    @Test    public void testSave(){        System.out.println(userMapper);        User user = new User();        user.setLoginName("seven");        user.setUserName("lin");        user.setPassword("123");        userMapper.save(user);    }}總結，通過這種配置可以實現不用sqlsession而實現crud，因為都交給sprin來實現了，但是這種方法在service層實現的時候代碼會比較冗余，但是這種方法思路比較清晰，有好有壞==。