mybatis和spring的简单集成

其他 2018-10-27 04:03:24 阅读次数: 0
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pml.xml增加依赖关系


        <!-- junit 测试 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

        <!-- spring 核心jar -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.3.2.RELEASE</version>
        </dependency>

        <!-- spring 测试jar -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>4.3.2.RELEASE</version>
        </dependency>

        <!-- spring jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.2.RELEASE</version>
        </dependency>

        <!-- spring事物 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>4.3.2.RELEASE</version>
        </dependency>

        <!-- aspectj切面编程的jar -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.9</version>
        </dependency>


        <!-- c3p0 连接池 -->
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
        </dependency>

        <!-- mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.1</version>
        </dependency>

        <!-- 添加mybatis与Spring整合的核心包 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.0</version>
        </dependency>
        <!-- mysql 驱动包 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.39</version>
        </dependency>

        <!-- 日志打印相关的jar -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.2</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.2</version>
        </dependency>

自动扫描包里面的xml文件


        <finalName>spring_mybatis</finalName>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                    <include>**/*.tld</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>

配置jdbc.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/mybatis
username=root
password=123456

配置log4j.properties

# Global logging configuration
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

mybatis.xml全局配置文件的使用

<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <!--包的扫描-->
    <typeAliases>
        <package name="com.sxt.po" />
    </typeAliases>
</configuration>

spring.xml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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <!-- 扫描com.shsxt 及其所有子包下类 -->
    <context:component-scan base-package="com.sxt" />
    <!-- 加载properties 配置文件 -->
    <context:property-placeholder location="classpath:db.properties" />
    <aop:aspectj-autoproxy /><!-- aop -->

    <!-- 配置数据源 -->
    <!-- 配置c3p0 数据源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"></property>
        <property name="jdbcUrl" value="${jdbc.url}"></property>
        <property name="user" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

    <!-- 配置事务管理器 -->
    <bean id="txManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!-- 设置事物增强 -->
    <tx:advice id="txAdvice" transaction-manager="txManager">
        <tx:attributes>
            <tx:method name="get*" read-only="true" />
            <tx:method name="find*" read-only="true" />
            <tx:method name="query*" read-only="true" />
            <tx:method name="load*" read-only="true" />
            <tx:method name="add*" propagation="REQUIRED" />
            <tx:method name="insert*" propagation="REQUIRED" />
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED" />
        </tx:attributes>
    </tx:advice>

    <!-- aop 切面配置 -->
    <aop:config>
        <aop:pointcut id="servicePointcut" expression="execution(* com.sxt.service..*.*(..))" />
        <aop:advisor advice-ref="txAdvice" pointcut-ref="servicePointcut"/>
    </aop:config>

    <!-- 配置 sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="configLocation" value="classpath:mybatis.xml" />
        <!--
                 自动扫描com/shsxt/crm/mapper目录下的所有SQL映射的xml文件, 省掉mybatis.xml里的手工配置
                value="classpath:com/shsxt/crm/mapper/*.xml"指的是classpath(类路径)下com.shsxt.crm.mapper包中的所有xml文件
                UserMapper.xml位于com.shsxt.crm.mapper包下，这样UserMapper.xml就可以被自动扫描
                 -->
        <property name="mapperLocations" value="classpath:com/sxt/mapper/*.xml" />
    </bean>

    <!-- 配置扫描器 -->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 扫描com.shsxt.dao这个包以及它的子包下的所有映射接口类 -->
        <property name="basePackage" value="com.sxt.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    </bean>
</beans>

sql映射文件

<?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.sxt.dao.UserDao">
    <resultMap id="base" type="user">
        <id column="id" property="id"></id>
        <result column="user_name" property="userName"></result>
        <result column="user_pwd" property="userPwd"></result>
        <result column="real_name" property="realName"></result>
        <result column="card_id" property="cardId"></result>
        <result column="nation" property="nation"></result>
    </resultMap>
    <select id="queryUserById" parameterType="int" resultMap="base">
        SELECT *FROM user WHERE id=#{id}
    </select>
</mapper>

接口

package com.sxt.dao;

import com.sxt.po.User;
import org.springframework.stereotype.Repository;

@Repository
public interface UserDao {
    public User queryUserById(Integer id);
}

po层参考

package com.sxt.po;

import java.io.Serializable;

public class User implements Serializable{

    private Integer id;
    private String userName;
    private String userPwd;
    private String realName;
    private String nation;
    private Integer cardId;


    public User() {
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", userName='" + userName + '\'' +
                ", userPwd='" + userPwd + '\'' +
                ", realName='" + realName + '\'' +
                ", nation='" + nation + '\'' +
                ", cardId=" + cardId +
                '}';
    }

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

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getUserPwd() {
        return userPwd;
    }

    public void setUserPwd(String userPwd) {
        this.userPwd = userPwd;
    }

    public String getRealName() {
        return realName;
    }

    public void setRealName(String realName) {
        this.realName = realName;
    }

    public String getNation() {
        return nation;
    }

    public void setNation(String nation) {
        this.nation = nation;
    }

    public Integer getCardId() {
        return cardId;
    }

    public void setCardId(Integer cardId) {
        this.cardId = cardId;
    }
}

service层

package com.sxt.service;

import com.sxt.dao.UserDao;
import com.sxt.po.User;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;


@Service
public class UserService {
    @Resource
    private UserDao userDao;
    public User queryUserById(Integer id){
        return userDao.queryUserById(id);
    }
}

测试类

package com.sxt.service;

import com.sxt.po.User;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import javax.annotation.Resource;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:spring.xml"})
public class UserServiceTest {
@Resource
    private UserService userService;
    @Test
    public void queryUserById() throws Exception{
        User user = userService.queryUserById(31);
        System.out.println(user);
        System.out.println("hello");
    }

}

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