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spring之aop:LogThrowAdvice

dodoma — Tue, 28 Mar 2006 04:57:00 GMT

接口修改�?br />package net.blogjava.dodoma.spring.aop;

public interface HelloI {
public String sayHello(String firstName,String lastName)throws Exception;
}

�c�M��改�ؓ
package net.blogjava.dodoma.spring.aop;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class Hello implements HelloI {
protected static final Log log=LogFactory.getLog(Hello.class);
private String msg;
public Hello(){}
public Hello(String msg){
  this.msg=msg;
}

public String getMsg() {
  return msg;
}
public void setMsg(String msg) {
  this.msg = msg;
}
public String sayHello(String firstName, String lastName) throws Exception{
  // TODO Auto-generated method stub
  log.info("in the class "+this.getClass().getName()+"'s method sayHello()");
throw new Exception("here is a exception !");
  return (msg+" "+firstName+" "+lastName);
}
}

package net.blogjava.dodoma.spring.aop;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.aop.ThrowsAdvice;

public class LogThrowAdvice implements ThrowsAdvice {
protected static final Log log = LogFactory.getLog(LogThrowAdvice.class);
public void afterThrowing(Exception e)throws Throwable{
log.info("in the class "+this.getClass().getName()+"'s method afterThrowing()");
log.info("the exception is "+e.getMessage());
}
}

package net.blogjava.dodoma.spring.aop;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;

public class HelloTest {
protected static final Log log = LogFactory.getLog(HelloTest.class);

/**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception {
  // TODO Auto-generated method stub
  Resource rs = new ClassPathResource("beans.xml");
  BeanFactory bf = new XmlBeanFactory(rs);

  HelloI h = (HelloI) bf.getBean("theBean");
  log.info("starting...");
  try {
   log.info(h.sayHello("ma", "bin"));
  } catch (Exception e) {
   e.printStackTrace();
  }
  log.info("end...");


  ProxyFactory factory=new ProxyFactory();
  factory.addAdvice(new LogThrowAdvice ());
  factory.setTarget(new Hello("hello"));
  try{
  HelloI hi=(HelloI)factory.getProxy();
  hi.sayHello("ma","bin");}
  catch(Exception e){e.printStackTrace();}
}

}

dodoma 2006-03-28 12:57 发表评论

spring之aop:LogAroundAdvice

dodoma — Tue, 28 Mar 2006 04:52:00 GMT

LogAroundAdvice 通知
package net.blogjava.dodoma.spring.aop;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class LogAroundAdvice implements MethodInterceptor {
protected static final Log log = LogFactory.getLog(LogAroundAdvice.class);

public Object invoke(MethodInvocation arg) throws Throwable {
  // 调用目标对象之前
  log.info("before the target object");
  Object val=arg.proceed();
//调用目标对象之后
  log.info("the arg is "+arg);
  log.info("after the target object");
  return val;
}

}

��试�Ҏ��

package net.blogjava.dodoma.spring.aop;

public class HelloTest {
protected static final Log log = LogFactory.getLog(HelloTest.class);

  HelloI h = (HelloI) bf.getBean("theBean");
  log.info("starting...");
  try {
   log.info(h.sayHello("ma", "bin"));
  } catch (Exception e) {
   e.printStackTrace();
  }
  log.info("end...");


  ProxyFactory factory=new ProxyFactory();
  factory.addAdvice(new LogAroundAdvice ());
  factory.setTarget(new Hello("hello"));
  try{
  HelloI hi=(HelloI)factory.getProxy();
  hi.sayHello("ma","bin");}
  catch(Exception e){e.printStackTrace();}
}

}

dodoma 2006-03-28 12:52 发表评论

spring之aop:LogAfterAdvice

dodoma — Tue, 28 Mar 2006 04:37:00 GMT

接口和实现类见LogBeforeAdvice的例�?br />package net.blogjava.dodoma.spring.aop;

import java.lang.reflect.Method;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.aop.AfterReturningAdvice;

public class LogAfterAdvice implements AfterReturningAdvice {
protected static final Log log = LogFactory.getLog(LogAfterAdvice.class);
public void afterReturning(Object returnVal, Method m, Object[] args,
   Object target) throws Throwable {
  // TODO Auto-generated method stub
  log.info("in the class "+this.getClass().getName()+"'s method afterReturning()");

log.info("the target class is:" + target.getClass().getName());
log.info("the target method is:" + m.getName());

  for (int i = 0; i < args.length; i++) {
   log.info("the method's args is:" + args[i]);
  }

  log.info("the returnValue is "+returnVal);
  //��试,如果�q�回装备发生了异�?��如何处理程序流�E?br />  //throw new Exception("�q�回装备发生异常");
}

}

��试代码

package net.blogjava.dodoma.spring.aop;

public class HelloTest {
protected static final Log log = LogFactory.getLog(HelloTest.class);

  HelloI h = (HelloI) bf.getBean("theBean");
  log.info("starting...");
  try {
   log.info(h.sayHello("ma", "bin"));
  } catch (Exception e) {
   e.printStackTrace();
  }
  log.info("end...");


  ProxyFactory factory=new ProxyFactory();
  factory.addAdvice(new LogAfterAdvice());
  factory.setTarget(new Hello("hello"));
  try{
  HelloI hi=(HelloI)factory.getProxy();
  hi.sayHello("ma","bin");}
  catch(Exception e){e.printStackTrace();}
}

}

在beans.xml中加入如下代�?br />


        theLogAfterAdvice






      .*

dodoma 2006-03-28 12:37 发表评论

spring之aop:LogBeforeAdvice

dodoma — Tue, 28 Mar 2006 04:02:00 GMT

接口
package net.blogjava.dodoma.spring.aop;

public interface HelloI {
public String sayHello(String firstName,String lastName);
}

实现�c?br />package net.blogjava.dodoma.spring.aop;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class Hello implements HelloI {
protected static final Log log=LogFactory.getLog(Hello.class);
private String msg;
public Hello(){}
public Hello(String msg){
  this.msg=msg;
}
public String getMsg() {
  return msg;
}
public void setMsg(String msg) {
  this.msg = msg;
}
public String sayHello(String firstName, String lastName) {
  // TODO Auto-generated method stub
  log.info("in the class "+this.getClass().getName()+"'s method sayHello()");
  return (msg+" "+firstName+" "+lastName);
}
}

BeforeAdvice通知

package net.blogjava.dodoma.spring.aop;

import java.lang.reflect.Method;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.aop.MethodBeforeAdvice;

/**
* �Ҏ��调用之前.
* 先调用此�Ҏ��
* @author dodoma
**/
public class LogBeforeAdvice implements MethodBeforeAdvice {
protected static final Log log = LogFactory.getLog(LogBeforeAdvice.class);

public void before(Method m, Object[] args, Object target) throws Throwable {
log.info("in the class "+this.getClass().getName()+"'s method before()");

log.info("the target class is:" + target.getClass().getName());
log.info("the target method is:" + m.getName());

  for (int i = 0; i < args.length; i++) {
   log.info("the method's args is:" + args[i]);
  }
  //��试,如果在before通知中发生了异常,�E�序��程��如�?br />  //throw new Exception("异常");
}
}

��试�c?br />package net.blogjava.dodoma.spring.aop;

public class HelloTest {
protected static final Log log = LogFactory.getLog(HelloTest.class);
public static void main(String[] args) throws Exception {
  // TODO Auto-generated method stub
//应用spring的ioc容器
  Resource rs = new ClassPathResource("beans.xml");
  BeanFactory bf = new XmlBeanFactory(rs);

  HelloI h = (HelloI) bf.getBean("theBean");
  log.info("starting...");
  try {
   log.info(h.sayHello("ma", "bin"));
     } catch (Exception e) {
   e.printStackTrace();
  }
  log.info("end...");

  //如果没有使用spring的ioc,可以直接用如下代码测�?br />  ProxyFactory factory=new ProxyFactory();
  factory.addAdvice(new LogBeforeAdvice());//��d��通知
  factory.setTarget(new Hello("hello"));//��d��被代理的�c�d��?br />  try{
  HelloI hi=(HelloI)factory.getProxy();
  hi.sayHello("ma","bin");}
  catch(Exception e){e.printStackTrace();}
}

}

spring的配�|�文件beans.xml

    hello

      net.blogjava.dodoma.spring.aop.HelloI




        theLogBeforeAdvice






      .*

dodoma 2006-03-28 12:02 发表评论