多个数据源在 Spring 引导中仅引用一个数据库

Question

在我的应用程序中，我需要集成两个数据源，但是当我使用 JdbcTemplate 集成第二个数据库时，前一个数据库不起作用，而是在第二个数据源

中创建的所有 table

#1 数据源

@Configuration
@Profile("mariadb4j")
@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})
public class EmbeddedMariaDBConfig {
private static final Logger L = 
LoggerFactory.getLogger(EmbeddedMariaDBConfig.class);
private static final String DB_SERVICE = "dbServiceBean";

@Bean(name = {DB_SERVICE})
MariaDB4jSpringService mariaDB4jSpringService() {
    L.info("Initializing MariaDB4j service");
    return new MariaDB4jSpringService();
}

@Bean(name = "adminDataSource")
@Primary
@DependsOn(DB_SERVICE)
DataSource dataSource(MariaDB4jSpringService mdb, DataSourceProperties dataSourceProperties) throws ManagedProcessException {
    String dbName = dataSourceProperties.getName();
    L.debug("Embedded MariaDB datasource properties from spring: [{}]", dataSourceProperties);
    mdb.getDB().createDB(dbName);

    if(L.isDebugEnabled()) {
        DBConfigurationBuilder ecfg = mdb.getConfiguration();
        L.debug("JDBC URL for embedded MariaDB as reported by driver: [{}]", ecfg.getURL(dbName));
        L.debug("JDBC URL from spring config: [{}]", dataSourceProperties.getUrl());
        L.debug("JDBC Username: [{}]", dataSourceProperties.getUsername());
        L.debug("JDBC Password: [{}]", dataSourceProperties.getPassword());
    }

    return DataSourceBuilder
            .create()
            .username(dataSourceProperties.getUsername())
            .password(dataSourceProperties.getPassword())
            .url(dataSourceProperties.getUrl())
            .driverClassName(dataSourceProperties.getDriverClassName())
            .build();
  }
}

Yaml 配置

spring:
  profiles: mariadb4j
  datasource:
   username: root
   password: password
   driver-class-name: com.mysql.jdbc.Driver
   url: jdbc:mysql://localhost:3306/t1
mariaDB4j:
 dataDir: /tmp/mariadb
 port: 3900

2 数据源

@Configuration
public class ExoDBConfig {

@Bean(name="user")
public DataSource dataSource() {
    DriverManagerDataSource dataSource = new DriverManagerDataSource();
    dataSource.setDriverClassName("com.mysql.jdbc.Driver");
    dataSource.setUrl("jdbc:mysql://localhost:3306/t2");
    dataSource.setUsername("root");
    dataSource.setPassword("password");
    return dataSource;
}

@Bean
public JdbcTemplate jdbcTemplate(@Qualifier("user")DataSource dataSource) 
 {
    return new JdbcTemplate(dataSource);
 }
}

当我只使用一个数据源时，第一个然后它工作正常并且 tables 正在 t1 数据库中创建但是当我集成第二个数据源时它指向到第二个数据源意味着所有 tables 都在 t2 数据库中创建。

Answer 1

只需在 JdbcTemplate 本身中创建 DataSource 对象，为我工作，您可以为 t2 数据库

创建单独的属性文件

    @Bean
public JdbcTemplate jdbcTemplate() {
    DriverManagerDataSource dataSource = new DriverManagerDataSource();
    dataSource.setDriverClassName("com.mysql.jdbc.Driver");
    dataSource.setUrl("jdbc:mysql://localhost:3306/t2");
    dataSource.setUsername("user");
    dataSource.setPassword("password");
    return new JdbcTemplate(dataSource);
}

多个数据源在 Spring 引导中仅引用一个数据库

Multiple DataSource is referring only one database in Spring Boot

spring

hibernate

datasource

jdbctemplate

spring-boot