Spring Aop

 

 

 

@Slf4j
@Aspect
@Component
public class DataSourceAspect implements Ordered {
	private final static Logger log = LoggerFactory.getLogger(DataSourceAspect.class);
	//对com.example.demo.modules包下的所有子包，类，方法生产作用
    @Pointcut("@annotation(com.example.demo.datasources.annotation.DataSource) && execution(* com.example.demo.modules..*.*(..))")
    public void dataSourcePointCut() {

    }

    @Around("dataSourcePointCut()")
    public Object around(ProceedingJoinPoint point) throws Throwable {
        MethodSignature signature = (MethodSignature) point.getSignature();
        Method method = signature.getMethod();

        DataSource ds = method.getAnnotation(DataSource.class);

        	System.out.println("=================" + ds.name());
        try {
             Object obj = point.proceed();
            
             System.out.println("================= End");
            
            return obj;
        } finally {
            log.debug("clean datasource");
        }  
    }

    @Override
    public int getOrder() {
        return 1;
    }
}

 

 

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface DataSource {
    String name() default "";
}

 

	@DataSource(name = "ABC")
	@Override
	public List<Test1> queryList(Map<String, Object> map) {
		return test1Dao.queryList(map);
	}