我想学习AOP弹簧。所以我已经安装了AspectJ的插上和红月月食创建AspectJ项目,这里是项目的快照浏览:使用@Before的AOP弹簧得到java.lang.StackOverflowError
[项目浏览] [1] [1]:https://i.stack.imgur.com/el0TZ.jpg
,这里是我的代码:
AopMain.java
package org.koushik.javabrains;
import org.koushik.javabrains.service.ShapeService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class AopMain {
public static void main(String[] args) {
ApplicationContext ctx = new
ClassPathXmlApplicationContext("spring.xml");
ShapeService shapeService = ctx.getBean("shapeService",ShapeService.class);
System.out.println(shapeService.getCircle().getCircleName());
}
}
LoggingAspect.java
package org.koushik.javabrains.aspect;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
@Aspect
public class LoggingAspect {
@Before("allCircleMethod()")
public void loggingAdvice(JoinPoint joinPoint){
System.out.println(joinPoint.toString());
}
//@Before("args(name)")
//public void stringArgumentMethods(String name){
// System.out.println("name: "+name);
//}
@Pointcut("execution(* get*())")
public void allGetters(){}
@Pointcut("within(org.koushik.javabrains.model.Circle)")
public void allCircleMethod(){}
}
Circle.java
package org.koushik.javabrains.model;
public class Circle {
private String circleName;
public String getCircleName() {
return circleName;
}
public void setCircleName(String circleName) {
this.circleName = circleName;
}
}
Triangle.java
package org.koushik.javabrains.model;
public class Triangle {
private String triangleName;
public String getTriangleName() {
return triangleName;
}
public void setTriangleName(String triangleName) {
this.triangleName = triangleName;
}
}
ShapeServices.java
package org.koushik.javabrains.service;
import org.koushik.javabrains.model.Circle;
import org.koushik.javabrains.model.Triangle;
public class ShapeService {
private Circle circle;
private Triangle triangle;
public Circle getCircle() {
return circle;
}
public void setCircle(Circle circle) {
this.circle = circle;
}
public Triangle getTriangle() {
return triangle;
}
public void setTriangle(Triangle triangle) {
this.triangle = triangle;
}
}
spring.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd">
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
<bean name="triangle" class="org.koushik.javabrains.model.Triangle">
<property name="name" value ="Triangle name"></property>
</bean>
<bean name="circle" class="org.koushik.javabrains.model.Circle">
<property name="name" value ="Circle Name"></property>
</bean>
<bean name="shapeService" class="org.koushik.javabrains.service.ShapeService" autowire="byName"/>
<bean name ="loggingAspect" class ="org.koushik.javabrains.aspect.LoggingAspect"/>
</beans>
的代码工作正常,而不使用在LoggingAspect.java:
@Before("args(name)")
public void stringArgumentMethods(String name){
System.out.println("name: "+name);
}
但是当我添加它,我会得到java.lang.StackOverflowError的:
Exception in thread "main" java.lang.StackOverflowError
at org.koushik.javabrains.aspect.LoggingAspect.stringArgumentMethods(LoggingAspect.java)
at org.koushik.javabrains.aspect.LoggingAspect.stringArgumentMethods(LoggingAspect.java)
at org.koushik.javabrains.aspect.LoggingAspect.stringArgumentMethods(LoggingAspect.java)
at org.koushik.javabrains.aspect.LoggingAspect.stringArgumentMethods(LoggingAspect.java)
at org.koushik.javabrains.aspect.LoggingAspect.stringArgumentMethods(LoggingAspect.java)
at org.koushik.javabrains.aspect.LoggingAspect.stringArgumentMethods(LoggingAspect.java)
at org.koushik.javabrains.aspect.LoggingAspect.stringArgumentMethods(LoggingAspect.java)
at org.koushik.javabrains.aspect.LoggingAspect.stringArgumentMethods(LoggingAspect.java)
at org.koushik.javabrains.aspect.LoggingAspect.stringArgumentMethods(LoggingAspect.java)
at org.koushik.javabrains.aspect.LoggingAspect.stringArgumentMethods(LoggingAspect.java)
at org.koushik.javabrains.aspect.LoggingAspect.stringArgumentMethods(LoggingAspect.java)
at org.koushik.javabrains.aspect.LoggingAspect.stringArgumentMethods(LoggingAspect.java)
at org.koushik.javabrains.aspect.LoggingAspect.stringArgumentMethods(LoggingAspect.java)
谁能告诉我为什么这个happend?怎么能解决它?
感谢您的评论,我想第二个选项,但我仍然得到了同样的StackOverflow错误! –
字符串abc(完全不同的名称) –
不,不幸的是,仍然是相同的错误! –