【mybatis】基本配置和使用

最新推荐文章于 2024-07-26 08:27:22 发布

原创最新推荐文章于 2024-07-26 08:27:22 发布 · 472 阅读

1 ·

CC 4.0 BY-SA版权

Mybatis 专栏收录该内容

1 篇文章

订阅专栏

本文深入解析了Maven环境下MyBatis的引入、配置文件使用、SQL语句编写、Spring集成以及相关配置，包括配置文件mybatisconfig.xml、数据源配置、SQLSessionFactory、事务管理等关键步骤，提供了从入门到进阶的全面指南。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

1.maven引用

                <!-- mybatis -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>   <!-- 整合spring -->
			<version>1.2.1</version>
		</dependency>

		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>3.2.8</version>
		</dependency>

		<dependency>
			<groupId>org.mybatis.caches</groupId>
			<artifactId>mybatis-ehcache</artifactId>
			<version>1.0.3</version>
		</dependency>

2.mybatis涉及到的配置文件

A.mybatisconfig.xml :eclipse放在src下的xml配置文件:用于设置编写sql语句的xml配置文件(如Sales——>sales.xml)的mapper,包的别名typeAliases以及其他的一些设置

eg:

<?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.xxx.sales.entity"/>
        <!--<typeAliase type="" aliase="" >-->
 </typeAliases>
	<mappers>
 	<mapper resource="com/xxx/sales/front/repository/mybatis/sales.xml"/>
        <mapper resource="com/xxx/sales/front/repository/mybatis/saleOrder.xml"/>
        <mapper resource="com/xxx/sales/front/repository/mybatis/distributorAccount.xml"/>
        <mapper resource="com/xxx/sales/front/repository/mybatis/snsUser.xml"/>
        <mapper resource="com/xxx/sales/front/repository/mybatis/rechargeOrder.xml"/>
        <mapper resource="com/xxx/sales/front/repository/mybatis/poster.xml"/>
        <mapper resource="com/xxx/sales/front/repository/mybatis/withdrawRecord.xml"/>
        <mapper resource="com/xxx/sales/front/repository/mybatis/flowProduct.xml"/>
	</mappers>
</configuration>

B.在spring配置文件中的配置

<?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:p="http://www.springframework.org/schema/p" 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/aop   http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
	http://www.springframework.org/schema/tx    http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
	
 	<context:property-placeholder location="classpath:sysconfig.properties" />

    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close" p:driverClassName="${jdbc.mysql.driverClassName}"
		p:url="${jdbc.mysql.url}" p:username="${jdbc.mysql.username}"
		p:password="${jdbc.mysql.password}" p:maxActive="100000" p:maxIdle="10"
		p:testOnBorrow="true" p:validationQuery="select 1" >

		<description>开发环境本地库配置</description>
	</bean>
	

	<span style="color:#FF0000;"><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"
		p:dataSource-ref="dataSource" p:configLocation="classpath:mybatisconfig.xml" />

	<bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
		<constructor-arg index="0" ref="sqlSessionFactory" />
	</bean></span>

	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
		p:dataSource-ref="dataSource" />
	
		
	<tx:advice id="txAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<tx:method name="update*" propagation="REQUIRED" rollback-for="Exception" />
			<tx:method name="mod*" propagation="REQUIRED" rollback-for="Exception" />
			<tx:method name="delete*" propagation="REQUIRED" rollback-for="Exception" />
			<tx:method name="insert*" propagation="REQUIRED" rollback-for="Exception" />
			<tx:method name="save*" propagation="REQUIRED" rollback-for="Exception" />
			<tx:method name="find*" propagation="REQUIRED" rollback-for="Exception" />
			<tx:method name="load*" propagation="REQUIRED" rollback-for="Exception" />
			<tx:method name="query*" propagation="REQUIRED" rollback-for="Exception" />
			<tx:method name="export*" propagation="REQUIRED" rollback-for="Exception" />
			<tx:method name="modify*" propagation="REQUIRED" rollback-for="Exception" />
			<tx:method name="cancle*" propagation="REQUIRED" rollback-for="Exception" />
			<tx:method name="logout*" propagation="REQUIRED" rollback-for="Exception" />
			<tx:method name="add*" propagation="REQUIRED" rollback-for="Exception" />
			<tx:method name="*" read-only="true" />
		</tx:attributes>
	</tx:advice>

	<!-- 通过AOP实现横向切入 -->
	
	<aop:config>
		<aop:advisor pointcut="execution(* com.xxx.sales.*.service.*.*(..))" advice-ref="txAdvice" />
	</aop:config>
</beans>

C.编写sql语句(增删改查)的xml文件，每个javabean对应一个xml文件

eg.

<?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.xxx.sales.entity.DistributorAccount">
    <resultMap id="distributorAccountResultMap" type="distributorAccount">
        <id property="id" column="id"></id>
        <result property="operatorId" column="operator_id"></result>
        <result property="orderNo" column="orderno"></result>
        <result property="price" column="price"></result>
        <result property="mobile" column="mobile"></result>
        <result property="flowPackage" column="flow_package"></result>
        <result property="operatorType" column="operator_type"></result>
        <result property="status" column="status"></result>
        <result property="createdDate" column="created_date"></result>
        <result property="finishDate" column="finish_date"></result>
        <result property="lastModified" column="last_modified"></result>
        <result property="remark" column="remark"></result>
        <result property="sellerId" column="seller_id"></result>
        <result property="version" column="version"></result>
        <result property="refundOperatorId" column="refund_operator_id"></result>
    </resultMap>

    <select id="selectDistributorAccountList" parameterType="distributorAccountForm" resultMap="distributorAccountResultMap">
        select o.* from rp_app_account o
        <where>
              o.seller_id = #{operatorId}
            <if test="beginDateStr != null and beginDateStr != ''">
                AND DATE_FORMAT(o.last_modified,'%Y-%m-%d') >= str_to_date(#{beginDateStr},'%Y-%m-%d')
            </if>
            <!--%Y-%m-%d %H:%i:%s-->
            <if test="endDateStr != null and endDateStr != ''">
                <![CDATA[
                and DATE_FORMAT(o.last_modified,'%Y-%m-%d') <= str_to_date(#{endDateStr},'%Y-%m-%d')
                ]]>
            </if>
            <if test="operatorType != null and operatorType != ''">
                and o.operator_type = #{operatorType}
            </if>
        </where>
        order by o.last_modified desc
        limit #{offset},#{pageSize}
    </select>

    <insert id="saveDistributorAccount" >
        insert into rp_app_account (operator_id,orderno,price,mobile,flow_package,operator_type,status,created_date,finish_date,last_modified,remark,seller_id,version)
        values (#{operatorId},#{orderNo},#{price},#{mobile},#{flowPackage},#{operatorType},#{status},now(),#{finishDate},now(),#{remark},#{sellerId},#{version})
    </insert>

    <update id="updateStatusByOrderNo" >
        update rp_app_account set status = #{status} ,last_modified = now(),refund_operator_id = #{refundOperatorId} where orderno = #{orderNo}
    </update>
</mapper>

D.编写Dao、DaoImpl

AccountDao.java

public interface AccountDao {

    List<DistributorAccount> findDistributorAccountByCondition(DistributorAccountForm distributorAccountForm);
}

AccountDaoImpl.java

<pre name="code" class="java">@Repository
public class AccountDaoImpl extends AbstractMyBatisBaseRepository implements AccountDao {
    /**
     * 查询账单
     * @param distributorAccountForm
     * @return
     */
    @Override
    public List<DistributorAccount> findDistributorAccountByCondition(DistributorAccountForm distributorAccountForm) {
        return getSqlSession().selectList("com.raipeng.sales.entity.DistributorAccount.selectDistributorAccountList",distributorAccountForm,new RowBounds(0,5));
    }

}

E.测试

import com.raipeng.sales.entity.DistributorAccount;
import com.raipeng.sales.entity.WithdrawRecord;
import com.raipeng.sales.entity.form.DistributorAccountForm;
import com.raipeng.sales.front.repository.AccountDao;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.annotation.Rollback;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.transaction.TransactionConfiguration;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.util.Date;
import java.util.List;
import java.util.UUID;

/**
 * Created by 111 on 2015/11/26.
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:applicationContext.xml")
@TransactionConfiguration(transactionManager = "transactionManager",defaultRollback = true)
@Transactional
public class DistributorAccountDaoTest {

    @Autowired
    private AccountDao accountDao;

    @Test
    public void findTest(){
        DistributorAccountForm distributorAccountForm = new DistributorAccountForm();
        distributorAccountForm.setBeginDateStr("2015-11-26 06:28:00");
        distributorAccountForm.setEndDateStr(null);
        distributorAccountForm.setOperatorType(1);
        List<DistributorAccount> distributorAccountList = accountDao.findDistributorAccountByCondition(distributorAccountForm);
        System.out.println(distributorAccountList.size());
    }
}