Spring 3.2 AOP-注释拦截方法

我试图截取任何带有自定义注释的标记方法，您之所以阅读这篇文章，是因为我无法让它工作。我一直在遵循简单的示例，但无法使其发挥作用

这是我的密码

MyAnnotation.java:

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface MyAnnotation {
  String value() default "";
  String key() default "";
  String condition() default "";
}

MyAspect.java:

@Aspect
public class MyAspect {

  @Pointcut(value="execution(public * *(..))")
  public void anyPublicMethod() { }

  @Around("anyPublicMethod() && @annotation(myAnnotation)")
  public Object process(ProceedingJoinPoint jointPoint, MyAnnotation myAnnotation) throws Throwable {
    System.out.println("In AOP process");
    return 5; //jointPoint.proceed();
  }
}

<beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:mvc="http://www.springframework.org/schema/mvc"
           xmlns:c="http://www.springframework.org/schema/c"
           xmlns:context="http://www.springframework.org/schema/context"
           xmlns:tx="http://www.springframework.org/schema/tx"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:aop="http://www.springframework.org/schema/aop"
           xmlns:p="http://www.springframework.org/schema/p"
           xmlns:cache="http://www.springframework.org/schema/cache"
           xmlns:task="http://www.springframework.org/schema/task"
           xsi:schemaLocation="
           http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
           http://www.springframework.org/schema/mvc
           http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context-3.2.xsd
           http://www.springframework.org/schema/tx
           http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
           http://www.springframework.org/schema/aop 
           http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
           http://www.springframework.org/schema/cache 
           http://www.springframework.org/schema/cache/spring-cache-3.2.xsd
           http://www.springframework.org/schema/task
           http://www.springframework.org/schema/task/spring-task-3.2.xsd">


    ...

  <context:component-scan base-package="com.myapp">
    <context:include-filter type="annotation" expression="org.aspectj.lang.annotation.Aspect"/>
  </context:component-scan>


  <aop:aspectj-autoproxy proxy-target-class="true" />
  <bean id="myAspect" class="com.myapp.annotation.MyAspect" />

    ...

@Component
public class MyComponent {
  @MyAnnotation(value="valtest", key="keytest", condition="contest")
  public int add(int i, int j) {
    System.out.println("Executing annotation.add");
    return i+j;
  }
}

spring config.xml:

@Aspect
public class MyAspect {

  @Pointcut(value="execution(public * *(..))")
  public void anyPublicMethod() { }

  @Around("anyPublicMethod() && @annotation(myAnnotation)")
  public Object process(ProceedingJoinPoint jointPoint, MyAnnotation myAnnotation) throws Throwable {
    System.out.println("In AOP process");
    return 5; //jointPoint.proceed();
  }
}

<beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:mvc="http://www.springframework.org/schema/mvc"
           xmlns:c="http://www.springframework.org/schema/c"
           xmlns:context="http://www.springframework.org/schema/context"
           xmlns:tx="http://www.springframework.org/schema/tx"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:aop="http://www.springframework.org/schema/aop"
           xmlns:p="http://www.springframework.org/schema/p"
           xmlns:cache="http://www.springframework.org/schema/cache"
           xmlns:task="http://www.springframework.org/schema/task"
           xsi:schemaLocation="
           http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
           http://www.springframework.org/schema/mvc
           http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context-3.2.xsd
           http://www.springframework.org/schema/tx
           http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
           http://www.springframework.org/schema/aop 
           http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
           http://www.springframework.org/schema/cache 
           http://www.springframework.org/schema/cache/spring-cache-3.2.xsd
           http://www.springframework.org/schema/task
           http://www.springframework.org/schema/task/spring-task-3.2.xsd">


    ...

  <context:component-scan base-package="com.myapp">
    <context:include-filter type="annotation" expression="org.aspectj.lang.annotation.Aspect"/>
  </context:component-scan>


  <aop:aspectj-autoproxy proxy-target-class="true" />
  <bean id="myAspect" class="com.myapp.annotation.MyAspect" />

    ...

@Component
public class MyComponent {
  @MyAnnotation(value="valtest", key="keytest", condition="contest")
  public int add(int i, int j) {
    System.out.println("Executing annotation.add");
    return i+j;
  }
}

测试代码：

final MyComponent m = new MyComponent();
assertTrue(5 == m.add(0, 1)); // Here m.add(...) always returns 1 instead of 5.

作为旁注，我尝试了许多不同的方法来定义切入点，无论是否使用anyPublic（）方法及其执行切入点，但这些方法都不适用于我：

@Around（@annotation（com.myapp.annotation.MyAnnotation）”）
公共对象进程（ProceedingJointPoint jointPoint）抛出可丢弃的{..}

@Around（value=“@annotation（myAnnotation）”，argNames=“myAnnotation”）
公共对象进程（ProceedingJointPoint jointPoint，MyAnnotation MyAnnotation）抛出可丢弃的{..}

@Around（“执行（*com.myapp.*.*（..）&&&&@annotation（com.myapp.annotation.MyAnnotation）”）
公共对象进程（ProceedingJointPoint jointPoint）抛出可丢弃的{..}

---

我做错了什么？

在测试代码中，您不允许Spring创建您的

MyComponent

，而是使用

新的
操作符。您应该从Spring的
ApplicationContext
访问
MyComponent

public class SomeTest {
    public static void main(String[] args) throws Exception {
        final ApplicationContext appContext = new ClassPathXmlApplicationContext("spring-config.xml");
        final MyComponent myComponent = appContext.getBean(MyComponent.class);
        //your test here...
    }
}

如果您没有从Spring获取组件，您希望如何代理它？
您正在调用
new
，除非您专门插入字节码，以允许通过
new
进行实例化，而不是通过应用程序上下文，或在编译时编织，实例化的对象完全不知道任何与Spring或AOP相关的内容。谢谢Dave，就是这样！我不敢相信我又爱上了那个。有时我们都需要另一双眼睛来突出显而易见的东西。这个问题/答案帮了我们大忙！另外，请注意@annotation（myAnnotation）中的“myAnnotation”确实以小写开头，以匹配进程声明中的参数名称。在注意到这一点之前，我们花了很多时间研究“未指定形式参数”。