多数据源与jta+atomikos分布式事务

其他 2021-01-31 23:58:15 阅读次数: 0

SpringBoot默认是集成事务的，只要在方法上加上@Transactional既可，
但某些项目用到了多个数据库，也就代表有多个数据源。此时需要用到分布式事务。

多数据源

此时有两个数据库：
数据库1：
Databases:spring
Table:enjoy_user

CREATE TABLE `enjoy_user` (
	`id`  int NOT NULL AUTO_INCREMENT ,
	`passwd`  varchar(255) NULL ,
	`username`  varchar(255) NULL ,
	PRIMARY KEY (`id`)
);

数据库2：
Databases:spring2
Table:enjoy_order

CREATE TABLE `enjoy_order` (
`id`  int(10) NOT NULL AUTO_INCREMENT ,
`name`  varchar(255)  ,
`user_id`  int(11) NOT NULL ,
`account`  int(255) NULL DEFAULT NULL ,
PRIMARY KEY (`id`)
)

pom文件
新建一个项目，在pom文件里面增加mybatis等依赖信息

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId> enjoy</groupId>
    <artifactId>springbootatomikos</artifactId>
    <version>1.0-SNAPSHOT</version>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.2.RELEASE</version>
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>
    <dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
    </dependency>
    <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
        <version>1.3.0</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
    </dependencies>
</project>

3.5.1.3. 新增model(Orders,Users)

package cn.enjoy.model;

public class Users {
    
    
    private Integer id;

    private String passwd;

    private String username;

    public Integer getId() {
    
    
        return id;
    }

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

    public String getPasswd() {
    
    
        return passwd;
    }

    public void setPasswd(String passwd) {
    
    
        this.passwd = passwd == null ? null : passwd.trim();
    }

    public String getUsername() {
    
    
        return username;
    }

    public void setUsername(String username) {
    
    
        this.username = username == null ? null : username.trim();
    }
}


package cn.enjoy.model;

public class Orders {
    
    
    private Integer id;

    private String name;

    private Integer userId;

    private Integer account;

    public Integer getId() {
    
    
        return id;
    }

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

    public String getName() {
    
    
        return name;
    }

    public void setName(String name) {
    
    
        this.name = name == null ? null : name.trim();
    }

    public Integer getUserId() {
    
    
        return userId;
    }

    public void setUserId(Integer userId) {
    
    
        this.userId = userId;
    }

    public Integer getAccount() {
    
    
        return account;
    }

    public void setAccount(Integer account) {
    
    
        this.account = account;
    }
}

新增mapper接口
注意：由于这两mapper接口对应不同的数据库，为了配置与管理方便，不同的数据库的mapper接口单独放置在一个package中

package cn.enjoy.dao.orders;

import cn.enjoy.model.Orders;

public interface OrdersMapper {
    
    
    int deleteByPrimaryKey(Integer id);

    int insert(Orders record);

    int insertSelective(Orders record);

    Orders selectByPrimaryKey(Integer id);

	int updateByPrimaryKeySelective(Orders record);

    int updateByPrimaryKey(Orders record);
}


package cn.enjoy.dao.users;
import cn.enjoy.model.Users;
import org.apache.ibatis.annotations.Param;
public interface UsersMapper {
    
    
    int deleteByPrimaryKey(Integer id);

    int insert(Users record);

    int insertSelective(Users record);

    Users selectByPrimaryKey(Integer id);

    int updateByPrimaryKeySelective(Users record);

    int updateByPrimaryKey(Users record);
}

Mapper的XML配置
为了管理方便，xml的配置也根据数据库的不同放置到不同的文件夹中。

<?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="cn.enjoy.dao.users.UsersMapper" >
  <resultMap id="BaseResultMap" type="cn.enjoy.model.Users" >
    <id column="id" property="id" jdbcType="INTEGER" />
    <result column="passwd" property="passwd" jdbcType="VARCHAR" />
    <result column="username" property="username" jdbcType="VARCHAR" />
  </resultMap>
  <sql id="Base_Column_List" >
    id, passwd, username
  </sql>
  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
    select 
    <include refid="Base_Column_List" />
    from enjoy_user
    where id = #{id,jdbcType=INTEGER}
  </select>

  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
    delete from enjoy_user
    where id = #{id,jdbcType=INTEGER}
  </delete>
  <insert id="insert" parameterType="cn.enjoy.model.Users" >
    insert into enjoy_user (id, passwd, username
      )
    values (#{id,jdbcType=INTEGER}, #{passwd,jdbcType=VARCHAR}, #{username,jdbcType=VARCHAR}
      )
  </insert>
  <insert id="insertSelective" parameterType="cn.enjoy.model.Users" >
    insert into enjoy_user
    <trim prefix="(" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        id,
      </if>
      <if test="passwd != null" >
        passwd,
      </if>
      <if test="username != null" >
        username,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        #{id,jdbcType=INTEGER},
      </if>
      <if test="passwd != null" >
        #{passwd,jdbcType=VARCHAR},
      </if>
      <if test="username != null" >
        #{username,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <update id="updateByPrimaryKeySelective" parameterType="cn.enjoy.model.Users" >
    update enjoy_user
    <set >
      <if test="passwd != null" >
        passwd = #{passwd,jdbcType=VARCHAR},
      </if>
      <if test="username != null" >
        username = #{username,jdbcType=VARCHAR},
      </if>
    </set>
    where id = #{id,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="cn.enjoy.model.Users" >
    update enjoy_user
    set passwd = #{passwd,jdbcType=VARCHAR},
      username = #{username,jdbcType=VARCHAR}
    where id = #{id,jdbcType=INTEGER}
  </update>
</mapper>


<?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="cn.enjoy.dao.orders.OrdersMapper" >
  <resultMap id="BaseResultMap" type="cn.enjoy.model.Orders" >
    <id column="id" property="id" jdbcType="INTEGER" />
    <result column="name" property="name" jdbcType="VARCHAR" />
    <result column="user_id" property="userId" jdbcType="INTEGER" />
    <result column="account" property="account" jdbcType="INTEGER" />
  </resultMap>
  <sql id="Base_Column_List" >
    id, name, user_id, account
  </sql>
  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
    select 
    <include refid="Base_Column_List" />
    from enjoy_order
    where id = #{id,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
    delete from enjoy_order
    where id = #{id,jdbcType=INTEGER}
  </delete>
  <insert id="insert" parameterType="cn.enjoy.model.Orders" >
    insert into enjoy_order (id, name, user_id, 
      account)
    values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{userId,jdbcType=INTEGER}, 
      #{account,jdbcType=INTEGER})
  </insert>
  <insert id="insertSelective" parameterType="cn.enjoy.model.Orders" >
    insert into enjoy_order
    <trim prefix="(" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        id,
      </if>
      <if test="name != null" >
        name,
      </if>
      <if test="userId != null" >
        user_id,
      </if>
      <if test="account != null" >
        account,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        #{id,jdbcType=INTEGER},
      </if>
      <if test="name != null" >
        #{name,jdbcType=VARCHAR},
      </if>
      <if test="userId != null" >
        #{userId,jdbcType=INTEGER},
      </if>
      <if test="account != null" >
        #{account,jdbcType=INTEGER},
      </if>
    </trim>
  </insert>
  <update id="updateByPrimaryKeySelective" parameterType="cn.enjoy.model.Orders" >
    update enjoy_order
    <set >
      <if test="name != null" >
        name = #{name,jdbcType=VARCHAR},
      </if>
      <if test="userId != null" >
        user_id = #{userId,jdbcType=INTEGER},
      </if>
      <if test="account != null" >
        account = #{account,jdbcType=INTEGER},
      </if>
    </set>
    where id = #{id,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="cn.enjoy.model.Orders" >
    update enjoy_order
    set name = #{name,jdbcType=VARCHAR},
      user_id = #{userId,jdbcType=INTEGER},
      account = #{account,jdbcType=INTEGER}
    where id = #{id,jdbcType=INTEGER}
  </update>
</mapper>

新建service接口与实现类

package cn.enjoy.service;

import cn.enjoy.model.Orders;
import cn.enjoy.model.Users;

public interface IOrderService {
    
    
     void addOrder(Orders orders, Users users);
}

实现类

package cn.enjoy.service.impl;

import cn.enjoy.dao.orders.OrdersMapper;
import cn.enjoy.dao.users.UsersMapper;
import cn.enjoy.model.Orders;
import cn.enjoy.model.Users;
import cn.enjoy.service.IOrderService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

@Service
public class OrderServiceImpl  implements IOrderService{
    
    

    @Resource
    private UsersMapper usersMapper;

    @Resource
    private OrdersMapper ordersMapper;

    @Override
    public void addOrder(Orders orders, Users users) {
    
    
        usersMapper.insertSelective(users);
        ordersMapper.insertSelective(orders);
    }
}

上面只是准备工作，目前未知没有配置与数据源相关的任何配置

application.properties
新增application.properties，里面配置数据源相关信息
分别配置了两个数据库

spring.datasource.spring.driverClassName=com.mysql.jdbc.Driver
spring.datasource.spring.jdbcUrl=jdbc:mysql://127.0.0.1:3306/spring?serverTimezone=GMT%2B8
spring.datasource.spring.username=root
spring.datasource.spring.password=root1234%

spring.datasource.spring2.driverClassName=com.mysql.jdbc.Driver
spring.datasource.spring2.jdbcUrl=jdbc:mysql://127.0.0.1:3306/spring2?serverTimezone=GMT%2B8
spring.datasource.spring2.username=root
spring.datasource.spring2.password=root1234%

数据源配置类

package cn.enjoy.config;

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;

import javax.sql.DataSource;


@Configuration
@MapperScan(basePackages = "cn.enjoy.dao.users", sqlSessionFactoryRef = "test1SqlSessionFactory")
public class DataSource1Config {
    
    
    @Bean(name = "test1DataSource")
    @ConfigurationProperties(prefix = "spring.datasource.spring")
    @Primary
    public DataSource testDataSource() {
    
    
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "test1SqlSessionFactory")
    @Primary
    public SqlSessionFactory testSqlSessionFactory(@Qualifier("test1DataSource") DataSource dataSource)
            throws Exception {
    
    
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
         bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mapping/users/*.xml"));
        return bean.getObject();
    }


    @Bean(name = "test1TransactionManager")
    @Primary
    public DataSourceTransactionManager testTransactionManager(@Qualifier("test1DataSource") DataSource dataSource) {
    
    
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean(name = "test1SqlSessionTemplate")
    @Primary
    public SqlSessionTemplate testSqlSessionTemplate(
            @Qualifier("test1SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
    
    
        return new SqlSessionTemplate(sqlSessionFactory);
    }

}


package cn.enjoy.config;

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;

import javax.sql.DataSource;


@Configuration
@MapperScan(basePackages = "cn.enjoy.dao.orders", sqlSessionFactoryRef = "test2SqlSessionFactory")
public class DataSource2Config {
    
    
    @Bean(name = "test2DataSource")
    @ConfigurationProperties(prefix = "spring.datasource.spring2")
    public DataSource testDataSource() {
    
    
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "test2SqlSessionFactory")
    public SqlSessionFactory testSqlSessionFactory(@Qualifier("test2DataSource") DataSource dataSource)
            throws Exception {
    
    
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
         bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mapping/orders/*.xml"));
        return bean.getObject();
    }

    @Bean(name = "test2TransactionManager")
    public DataSourceTransactionManager testTransactionManager(@Qualifier("test2DataSource") DataSource dataSource) {
    
    
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean(name = "test2SqlSessionTemplate")
    public SqlSessionTemplate testSqlSessionTemplate(
            @Qualifier("test2SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
    
    
        return new SqlSessionTemplate(sqlSessionFactory);
    }

}

这两个配置文件是重中之重，配置了数据源，连接工厂，Mapper扫描的包， mapper xml配置的位置等

单元测试

package enjoy.test;

import cn.enjoy.App;
import cn.enjoy.model.Orders;
import cn.enjoy.model.Users;
import cn.enjoy.service.IOrderService;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import javax.annotation.Resource;

@SpringBootTest(classes = {
    
    App.class})
@RunWith(SpringRunner.class)
public class Test {
    
    

    @Resource
    private IOrderService iOrderService;

    @org.junit.Test
    public void test1() {
    
    
        Users users = new Users();
        users.setUsername("enjoy");
        users.setPasswd("123");
        users.setId(1);

        Orders orders = new Orders();
        orders.setAccount(12);
        orders.setName("娃娃");
        orders.setUserId(1);
        iOrderService.addOrder(orders,users);
    }
}

这个时候以及集成了2套数据源，并且已经测试发现可以同时入库。

jta+atomikos分布式事务

修改pom文件
增加atomikos支持

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-jta-atomikos</artifactId>
</dependency>

新增配置类（DBConfig1，DBConfig2）

package cn.enjoy.config;

import org.springframework.boot.context.properties.ConfigurationProperties;


@ConfigurationProperties(prefix = "spring.datasource.spring")
@Component
public class DBConfig1 {
    
    
    private String driverClassName;
    private String jdbcUrl;
    private String username;
    private String password;

    public String getDriverClassName() {
    
    
        return driverClassName;
    }

    public void setDriverClassName(String driverClassName) {
    
    
        this.driverClassName = driverClassName;
    }

    public String getJdbcUrl() {
    
    
        return jdbcUrl;
    }

    public void setJdbcUrl(String jdbcUrl) {
    
    
        this.jdbcUrl = jdbcUrl;
    }

    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 cn.enjoy.config;

import org.springframework.boot.context.properties.ConfigurationProperties;


@ConfigurationProperties(prefix = "spring.datasource.spring2")
@Component
public class DBConfig2 {
    
    
    private String driverClassName;
    private String jdbcUrl;
    private String username;
    private String password;

    public String getDriverClassName() {
    
    
        return driverClassName;
    }

    public void setDriverClassName(String driverClassName) {
    
    
        this.driverClassName = driverClassName;
    }

    public String getJdbcUrl() {
    
    
        return jdbcUrl;
    }

    public void setJdbcUrl(String jdbcUrl) {
    
    
        this.jdbcUrl = jdbcUrl;
    }

    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;
    }
}

修改数据源配置类

package cn.enjoy.config;

import com.mysql.cj.jdbc.MysqlXADataSource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.boot.jta.atomikos.AtomikosDataSourceBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;

import javax.sql.DataSource;


@Configuration
@MapperScan(basePackages = "cn.enjoy.dao.users", sqlSessionFactoryRef = "test1SqlSessionFactory")
public class DataSource1Config {
    
    


    @Bean(name = "test1DataSource")
    @Primary
    public DataSource testDataSource(DBConfig1 config1) {
    
    
        MysqlXADataSource mysqlXADataSource=new MysqlXADataSource();
        mysqlXADataSource.setUrl(config1.getJdbcUrl());
        mysqlXADataSource.setPassword(config1.getPassword());
        mysqlXADataSource.setUser(config1.getUsername());

        AtomikosDataSourceBean atomikosDataSourceBean=new AtomikosDataSourceBean();
        atomikosDataSourceBean.setXaDataSource(mysqlXADataSource);
        atomikosDataSourceBean.setUniqueResourceName("test1Datasource");
        return atomikosDataSourceBean;

    }


    @Bean(name = "test1SqlSessionFactory")
    @Primary
    public SqlSessionFactory testSqlSessionFactory(@Qualifier("test1DataSource") DataSource dataSource)
            throws Exception {
    
    
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
         bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mapping/users/*.xml"));
        return bean.getObject();
    }


    @Bean(name = "test1TransactionManager")
    @Primary
    public DataSourceTransactionManager testTransactionManager(@Qualifier("test1DataSource") DataSource dataSource) {
    
    
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean(name = "test1SqlSessionTemplate")
    @Primary
    public SqlSessionTemplate testSqlSessionTemplate(
            @Qualifier("test1SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
    
    
        return new SqlSessionTemplate(sqlSessionFactory);
    }

}


package cn.enjoy.config;

import com.mysql.cj.jdbc.MysqlXADataSource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.boot.jta.atomikos.AtomikosDataSourceBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;

import javax.sql.DataSource;


@Configuration
@MapperScan(basePackages = "cn.enjoy.dao.orders", sqlSessionFactoryRef = "test2SqlSessionFactory")
public class DataSource2Config {
    
    

    @Bean(name = "test2DataSource")
    public DataSource testDataSource(DBConfig2 config2) {
    
    
        MysqlXADataSource mysqlXADataSource=new MysqlXADataSource();
        mysqlXADataSource.setUrl(config2.getJdbcUrl());
        mysqlXADataSource.setPassword(config2.getPassword());
        mysqlXADataSource.setUser(config2.getUsername());

        AtomikosDataSourceBean atomikosDataSourceBean=new AtomikosDataSourceBean();
        atomikosDataSourceBean.setXaDataSource(mysqlXADataSource);
        atomikosDataSourceBean.setUniqueResourceName("test2Datasource");
        return atomikosDataSourceBean;

    }


    @Bean(name = "test2SqlSessionFactory")
    public SqlSessionFactory testSqlSessionFactory(@Qualifier("test2DataSource") DataSource dataSource)
            throws Exception {
    
    
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
         bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mapping/orders/*.xml"));
        return bean.getObject();
    }


    @Bean(name = "test2TransactionManager")
    public DataSourceTransactionManager testTransactionManager(@Qualifier("test2DataSource") DataSource dataSource) {
    
    
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean(name = "test2SqlSessionTemplate")
    public SqlSessionTemplate testSqlSessionTemplate(
            @Qualifier("test2SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
    
    
        return new SqlSessionTemplate(sqlSessionFactory);
    }

}

修改Service方法

package cn.enjoy.service.impl;


import cn.enjoy.dao.orders.OrdersMapper;
import cn.enjoy.dao.users.UsersMapper;
import cn.enjoy.model.Orders;
import cn.enjoy.model.Users;
import cn.enjoy.service.IOrderService;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;

@Service
public class OrderServiceImpl  implements IOrderService{
    
    

    @Resource
    private UsersMapper usersMapper;

    @Resource
    private OrdersMapper ordersMapper;

    @Override
    @Transactional
    public void addOrder(Orders orders, Users users) {
    
    
        usersMapper.insertSelective(users);
        int i=10/0;
        ordersMapper.insertSelective(orders);
    }
}

最后使用之前的单元测试方法即可

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