JDK动态代理与CGLib动态代理的区别对比

public interface forumservice {

  void removetopic( int topicid);

  void removeforum( int forumid);

}

public class forumserviceimpl implements forumservice {

  public void removetopic( int topicid) {

  // performancemonitor.begin("com.hand.proxy.forumserviceimpl.removetopic");

  system.out.println( "模拟删除topic记录:" + topicid);

  try {

   thread.sleep( 20 );

  } catch (interruptedexception e) {

   e.printstacktrace();

  }

  // performancemonitor.end();

  }

  public void removeforum( int forumid) {

  // performancemonitor.begin("com.hand.proxy.forumserviceimpl.removeforum");

  system.out.println( "模拟删除forum记录:" + forumid);

  try {

   thread.sleep( 20 );

  } catch (interruptedexception e) {

   e.printstacktrace();

  }

  // performancemonitor.end();

  }

}

public class performancemonitor {

  // 通过一个threadlocal保存与调用线程相关的性能监视信息

  private static threadlocal<methodperformance> performancerecord = new threadlocal<methodperformance>();

  // 启动对某一目标方法的性能监视

  public static void begin(string method) {

  system.out.println( "begin monitor..." );

  methodperformance mp = new methodperformance(method);

  performancerecord.set(mp);

  }

  public static void end() {

  system.out.println( "end monitor..." );

  methodperformance mp = performancerecord.get();

  // 打印出方法性能监视的结果信息

  mp.printperformance();

  }

}

public class performancemonitor {

  // 通过一个threadlocal保存与调用线程相关的性能监视信息

  private static threadlocal<methodperformance> performancerecord = new threadlocal<methodperformance>();

  // 启动对某一目标方法的性能监视

  public static void begin(string method) {

  system.out.println( "begin monitor..." );

  methodperformance mp = new methodperformance(method);

  performancerecord.set(mp);

  }

  public static void end() {

  system.out.println( "end monitor..." );

  methodperformance mp = performancerecord.get();

  // 打印出方法性能监视的结果信息

  mp.printperformance();

  }

}

public class performancemonitor {

  // 通过一个threadlocal保存与调用线程相关的性能监视信息

  private static threadlocal<methodperformance> performancerecord = new threadlocal<methodperformance>();

  // 启动对某一目标方法的性能监视

  public static void begin(string method) {

  system.out.println( "begin monitor..." );

  methodperformance mp = new methodperformance(method);

  performancerecord.set(mp);

  }

  public static void end() {

  system.out.println( "end monitor..." );

  methodperformance mp = performancerecord.get();

  // 打印出方法性能监视的结果信息

  mp.printperformance();

  }

}

public class forumservicetest {

  @test

  public void proxy() {

  forumservice forumservice = new forumserviceimpl();

  performancehandler handler = new performancehandler(forumservice);

  forumservice proxy = (forumservice) proxy.newproxyinstance(forumservice.getclass().getclassloader(),

   forumservice.getclass().getinterfaces(), handler);

  proxy.removeforum( 10 );

  proxy.removetopic( 1012 );

  }

}

<!-- https: //mvnrepository测试数据/artifact/cglib/cglib -->

<dependency>

  <groupid>cglib</groupid>

  <artifactid>cglib</artifactid>

  <version> 2.2 . 2 </version>

</dependency>

public class cglibproxy implements methodinterceptor {

  private enhancer enhancer = new enhancer();

  public object getproxy( class clazz) {

  enhancer.setsuperclass(clazz);

  enhancer.setcallback( this );

  return enhancer.create();

  }

  public object intercept(object obj, method method, object[] args, methodproxy proxy) throws throwable {

  performancemonitor.begin(obj.getclass().getname() + "." + method.getname());

  object result = proxy.invokesuper(obj, args);

  performancemonitor.end();

  return result;

  }

}

public class forumservicetest2 {

  @test

  public void proxy() {

  cglibproxy proxy = new cglibproxy();

  forumserviceimpl forumservice = (forumserviceimpl) proxy.getproxy(forumserviceimpl. class );

  forumservice.removeforum( 10 );

  forumservice.removetopic( 1023 );

  }

}