springboot整合多个mybatis数据源

1.idea，选择mybatis,mysql,web…

<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>1.3.1</version>
</dependency>

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2.程序启动类加上exclude去掉boot的默认数据源配置；

@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
public class SpringBootMybtais2Application {

    public static void main(String[] args) {
        SpringApplication.run(SpringBootMybtais2Application.class, args);
    }
}

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3.项目结构如下： 

4.application.properties配置如下：

server.port=8081
logging.config=./config/logback.xml

#==================多个数据源============
spring.datasource.test1.url=jdbc:mysql://192.168.10.215:3306/gexin_aus?useUnicode=true&characterEncoding=utf8
spring.datasource.test1.username=remote
spring.datasource.test1.password=hangzhoumeiri
spring.datasource.test1.driver-class-name=com.mysql.jdbc.Driver
mybatis.test1.typeAliasesPackage=com.pkx.model.test1
mybatis.test1.mapperLocations=classpath:mapper.test1/*.xml


spring.datasource.test2.url=jdbc:mysql://192.168.10.41:3308/gexin_dmp_dms?useUnicode=true&characterEncoding=utf8
spring.datasource.test2.username=remote
spring.datasource.test2.password=hangzhoumeiri
spring.datasource.test2.driver-class-name=com.mysql.jdbc.Driver
mybatis.test2.typeAliasesPackage=com.pkx.model.test2
mybatis.test2.mapperLocations=classpath:mapper.test2/*.xml

#============== kafka ===================
kafka.consumer.zookeeper.connect=192.168.11.2:2181,192.168.10.218:2181
kafka.consumer.servers=192.168.10.221:9093
kafka.consumer.enable.auto.commit=true
kafka.consumer.session.timeout=6000
kafka.consumer.auto.commit.interval=100
kafka.consumer.auto.offset.reset=latest
kafka.consumer.topic=test
kafka.consumer.group.id=group-id-test
kafka.consumer.concurrency=10

kafka.producer.servers=192.168.10.221:9093
kafka.producer.retries=0
kafka.producer.batch.size=4096
kafka.producer.linger=1
kafka.producer.buffer.memory=40960

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5.controller层代码

controller1

@RequestMapping("user")
@RestController
public class GdmpUserController {
    @Autowired
    private GdmpUserMapper gdmpUserMapper;

    @RequestMapping("/list")
    public List<GdmpUser> listAll() {
        return gdmpUserMapper.selectByExample(new GdmpUserExample());
    }

}

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controller2

@RequestMapping("account")
@RestController
public class AccountController {
    @Autowired
    private AccountMapper accountMapper;

    @RequestMapping("/list")
    public List<Account> listAll() {
        return accountMapper.selectByExample(new AccountExample());
    }

}

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==6.数据源的配置类；==

数据源1：先注入数据源，再SqlSessionFactory，再DataSourceTransactionManager事务，再SqlSessionTemplate；

@Configuration
@MapperScan(basePackages = "com.pkx.dao.test1", sqlSessionTemplateRef  = "test1SqlSessionTemplate")
public class DataSource1Config {

    @Bean(name = "test1DataSource")
    @ConfigurationProperties(prefix = "spring.datasource.test1")
    @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:/mapper/test1/*.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);
    }

}

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数据源2：

@MapperScan注解扫描dao层

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@Configuration
@MapperScan(basePackages = "com.pkx.dao.test2", sqlSessionTemplateRef  = "test2SqlSessionTemplate")
public class DataSource2Config {

    @Bean(name = "test2DataSource")
    @ConfigurationProperties(prefix = "spring.datasource.test2")
    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:/mapper/test2/*.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);
    }

}

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至于model，xml，mapper可以用generator自动生成；