Spring Boot中的多个DataSource和JdbcTemplate(> 1.1.0)

Question

我想JdbcTemplate在Spring Boot项目中注入一个特定的.我尝试按照此示例进行多种DataSource配置:http://spring.io/blog/2014/05/27/spring-boot-1-1-0-m2-available-now

我的代码编译并运行,但只考虑带有@Primary注释的DataSource ,无论我@Qualifier在SqlService类中放置什么.我的相关代码如下:

DatabaseConfig.java:

@Configuration
public class DatabaseConfig {

    @Bean(name = "dsSlave")
    @ConfigurationProperties(prefix="spring.mysql_slave")
    public DataSource slaveDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "dsMaster")
    @Primary
    @ConfigurationProperties(prefix="spring.mysql_master")
    public DataSource masterDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "jdbcSlave")
    @Autowired
    @Qualifier("dsSlave")
    public JdbcTemplate slaveJdbcTemplate(DataSource dsSlave) {
        return new JdbcTemplate(dsSlave);
    }

    @Bean(name = "jdbcMaster")
    @Autowired
    @Qualifier("dsMaster")
    public JdbcTemplate masterJdbcTemplate(DataSource dsMaster) {
        return new JdbcTemplate(dsMaster);
    }

}

我做了一个快速的服务尝试:

SqlService.java:

@Component
public class SqlService {

    @Autowired
    @Qualifier("jdbcSlave")
    private JdbcTemplate jdbcTemplate;

    public String getHelloMessage() {
        String host = jdbcTemplate.queryForObject("select @@hostname;", String.class);
        System.out.println(host);
        return "Hello";
    }

}

Answer 1

它应该是这样的:

@Bean(name = "jdbcSlave")
@Autowired
public JdbcTemplate slaveJdbcTemplate(@Qualifier("dsSlave") DataSource dsSlave) {
    return new JdbcTemplate(dsSlave);
}

Answer 2

尝试将@Qualifier注释移动到parameter您的@Bean方法上JdbcTemplate.

我想,当你删除@Primary你最终有错误,在哪里more than one appropriate beans are presented