SpringBoot 多數據源動態切換數據源

實現步驟請移步:  https://blog.csdn.net/xp541130126/article/details/81739760

感謝作者的分享, 十分的詳細, 小白在實驗中遇到以下問題, 在此做個記錄, 幫助其他小新同學:

1.  主啓動類要加以下代碼, 保證啓動時就註冊這個類

/**
 * Visual啓動器
 *
 * @author Chill
 */
@Import(DynamicDataSourceRegister.class)
@SpringCloudApplication
public class VisualApplication {

	public static void main(String[] args) {
		BladeApplication.run(LauncherConstant.APPLICATION_VISUAL_NAME, VisualApplication.class, args);
	}

	@Bean
	public DynamicDataSourceAnnotationAdvisor dynamicDatasourceAnnotationAdvisor() {
		return new DynamicDataSourceAnnotationAdvisor(new DynamicDataSourceAnnotationInterceptor());
	}

}

2. 數據源配置, 副數據源就算只有一個, 也要放到數組中( yml 文件 "-" 就表示數組), 不然註冊數據源會報錯, no bound value

#數據源配置
spring:
  datasource:
    master:
      url: jdbc:mysql://localhost:3306/bladex?useSSL=false&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&transformedBitIsBoolean=true&tinyInt1isBit=false&allowMultiQueries=true&serverTimezone=GMT%2B8&allowPublicKeyRetrieval=true
      username: root
      password: root
      druid:
        # MySql、PostgreSQL校驗
        validation-query: select 1
    slave:
    - key: slave1
      url: jdbc:mysql://localhost:3306/bladex_slave?useSSL=false&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&transformedBitIsBoolean=true&tinyInt1isBit=false&allowMultiQueries=true&serverTimezone=GMT%2B8&allowPublicKeyRetrieval=true
      username: root
      password: root
      druid:
        # MySql、PostgreSQL校驗
        validation-query: select 1

3. 切換數據源的時候,  括號內的字符串, 是副數據源 的 key ( slave1)

@DataSource("slave1")
@Select(" select * from blade_dept where id = 1123598813738675201")
public List<Map> queryDeptById2();