SpringBoot整合mybatis多数据源,支持分布式事务
编码工具:IDEA
SpringBoot版本:2.0.1
JDK版本:1.8
1.使用IDEA构建一个Maven工程 ,添加依赖:
<?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>com.wuzz.demo</groupId>
<artifactId>spring-boot-jdbc</artifactId>
<version>1.0-SNAPSHOT</version> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties> <parent> <!-- Import dependency management from Spring Boot -->
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>2.0.1.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.5</version>
</dependency> <dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.1</version>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency> <dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>io.projectreactor</groupId>
<artifactId>reactor-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.zaxxer</groupId>
<artifactId>HikariCP</artifactId>
<version>3.2.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-jta-atomikos -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jta-atomikos</artifactId>
</dependency> </dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
2.添加启动类:
@SpringBootApplication
public class App { public static void main( String[] args )
{
SpringApplication.run(App.class, args);
}
}
3.数据源配置:MasterDataSourceConfig
@Configuration
@MapperScan(basePackages = "com.wuzz.demo.mapper.mapper1", sqlSessionFactoryRef = "masterSqlSessionFactory")
public class MasterDataSourceConfig { @Bean(name = "masterDataSource")
@Primary
public DataSource masterDataSource(){ // DataSourceBuilder dataSourceBuilder = DataSourceBuilder.create();
//
// DataSource dataSource = dataSourceBuilder
// .driverClassName("com.mysql.jdbc.Driver")
// .url("jdbc:mysql://localhost:3306/disaster")
// .username("root")
// .password("zhenzhao123456")
// .build();
//
// return dataSource;
MysqlXADataSource mysqlXaDataSource = new MysqlXADataSource();
mysqlXaDataSource.setUrl("jdbc:mysql://localhost:3306/disaster?useSSL=true");
mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true);
mysqlXaDataSource.setPassword("zhenzhao123456");
mysqlXaDataSource.setUser("root");
mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true); AtomikosDataSourceBean xaDataSource = new AtomikosDataSourceBean();
xaDataSource.setXaDataSource(mysqlXaDataSource);
xaDataSource.setUniqueResourceName("masterDataSource"); return xaDataSource;
} @Bean(name = "masterSqlSessionFactory")
@Primary
public SqlSessionFactory masterSqlSessionFactory(@Qualifier("masterDataSource") DataSource dataSource) throws Exception {
SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
bean.setDataSource(dataSource);
bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mybatis/master.xml"));
return bean.getObject();
} @Bean(name = "masterSqlSessionTemplate")
@Primary
public SqlSessionTemplate masterSqlSessionTemplate(@Qualifier("masterSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
return new SqlSessionTemplate(sqlSessionFactory);
}
}
SlaveDataSourceConfig:
@Configuration
@MapperScan(basePackages = "com.wuzz.demo.mapper.mapper2", sqlSessionFactoryRef = "slaveSqlSessionFactory")
public class SlaveDataSourceConfig { @Bean(name = "salveDataSource")
public DataSource salveDataSource(){ // DataSourceBuilder dataSourceBuilder = DataSourceBuilder.create();
//
// DataSource dataSource = dataSourceBuilder
// .driverClassName("com.mysql.jdbc.Driver")
// .url("jdbc:mysql://localhost:3306/study?useSSL=true")
// .username("root")
// .password("zhenzhao123456")
// .build();
//
// return dataSource;
MysqlXADataSource mysqlXaDataSource = new MysqlXADataSource();
mysqlXaDataSource.setUrl("jdbc:mysql://localhost:3306/study");
mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true);
mysqlXaDataSource.setPassword("zhenzhao123456");
mysqlXaDataSource.setUser("root");
mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true); AtomikosDataSourceBean xaDataSource = new AtomikosDataSourceBean();
xaDataSource.setXaDataSource(mysqlXaDataSource);
xaDataSource.setUniqueResourceName("salveDataSource"); return xaDataSource; }
@Bean(name = "slaveSqlSessionFactory")
public SqlSessionFactory slaveSqlSessionFactory(@Qualifier("salveDataSource") DataSource dataSource) throws Exception {
SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
bean.setDataSource(dataSource);
bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mybatis/slave.xml"));
return bean.getObject();
} @Bean(name = "slaveSqlSessionTemplate")
public SqlSessionTemplate slaveSqlSessionTemplate(@Qualifier("slaveSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
return new SqlSessionTemplate(sqlSessionFactory);
}
}
4.配置相应的Mapper接口类及XML:
public interface UserMapper1 { int insert(User user); }
public interface UserMapper2 { int insert(User user); }
XML:
<?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.wuzz.demo.mapper.mapper1.UserMapper1" >
<resultMap id="BaseResultMap" type="com.wuzz.demo.domain.User" >
<id column="id" property="id" jdbcType="BIGINT" />
<result column="name" property="name" jdbcType="VARCHAR" />
</resultMap> <insert id="insert" parameterType="com.wuzz.demo.domain.User" >
INSERT INTO
user
(id,name)
VALUES
(#{id}, #{name})
</insert>
</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="com.wuzz.demo.mapper.mapper2.UserMapper2" >
<resultMap id="BaseResultMap" type="com.wuzz.demo.domain.User" >
<id column="id" property="id" jdbcType="BIGINT" />
<result column="name" property="name" jdbcType="VARCHAR" />
</resultMap> <insert id="insert" parameterType="com.wuzz.demo.domain.User" >
INSERT INTO
user
(id,name)
VALUES
(#{id}, #{name})
</insert>
</mapper>
5.service层编写:
@Service
public class UserServiceImpl implements com.wuzz.demo.service.impl.UserService { @Autowired
private UserMapper1 userMapper1; @Autowired
private UserMapper2 userMapper2; @Override
@Transactional
public int insert(User user) {
userMapper1.insert(user); userMapper2.insert(user);
int k =1/0; return 1;
}
}
6.controller:
@RestController
public class UserController { @Autowired
private UserService userService; @PostMapping("/web/mvc/user/save")
public int save(@RequestBody User user) throws ExecutionException, InterruptedException { return userService.insert(user);
}
}
最后启动 SpringBoot 。测试完成。
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