Spring Boot 整合 jdbctemplate 多数据源

参考地址：https://blog.csdn.net/u012702547/article/details/88622445

1.pom.xml引包

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.28</version>
    <scope>runtime</scope>
</dependency>
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid-spring-boot-starter</artifactId>
    <version>1.1.10</version>
</dependency>

2.pplication.properties中配置数据源

spring.datasource.one.url=jdbc:mysql:///test01?useUnicode=true&characterEncoding=utf-8
spring.datasource.one.username=root
spring.datasource.one.password=root
spring.datasource.one.type=com.alibaba.druid.pool.DruidDataSource

spring.datasource.two.url=jdbc:mysql:///test02?useUnicode=true&characterEncoding=utf-8
spring.datasource.two.username=root
spring.datasource.two.password=root
spring.datasource.two.type=com.alibaba.druid.pool.DruidDataSource

3.注解配置多数据源

@Configuration
public class DataSourceConfig {
    @Bean
    @ConfigurationProperties(prefix = "spring.datasource.one")
    DataSource dsOne() {
        return DruidDataSourceBuilder.create().build();
    }
    @Bean
    @ConfigurationProperties(prefix = "spring.datasource.two")
    DataSource dsTwo() {
        return DruidDataSourceBuilder.create().build();
    }
}

@Configuration
public class JdbcTemplateConfig {

    @Bean
    JdbcTemplate jdbcTemplateOne(@Qualifier("dsOne") DataSource dsOne) {
        return new JdbcTemplate(dsOne);
    }

    @Bean
    JdbcTemplate jdbcTemplateTwo(@Qualifier("dsTwo") DataSource dsTwo) {
        return new JdbcTemplate(dsTwo);
    }
}

4.测试

@RestController
public class HelloController {
    @Autowired
    @Qualifier("jdbcTemplateOne")
    JdbcTemplate jdbcTemplateOne;
    @Resource(name = "jdbcTemplateTwo")
    JdbcTemplate jdbcTemplateTwo;

    @GetMapping("/user")
    public List<User> getAllUser() {
        List<User> list = jdbcTemplateOne.query("select * from t_user", new BeanPropertyRowMapper<>(User.class));
        return list;
    }
    @GetMapping("/user2")
    public List<User> getAllUser2() {
        List<User> list = jdbcTemplateTwo.query("select * from t_user", new BeanPropertyRowMapper<>(User.class));
        return list;
    }
}