在远程方法调用中运用反射机制

package remotecall;

import java.util.Date;

public interface HelloService{

  public String echo(String msg);

  public Date getTime();

} 

 

package remotecall;

import java.util.Date;

public class HelloServiceImpl implements HelloService{

  public String echo(String msg){

    return "echo:"+msg;

  }

  public Date getTime(){

    return new Date();

  }

} 

 

package remotecall;

import java.io.*;

public class Call implements Serializable{

  private String className;  //表示类名

  private String methodName; //表示方法名

  private Class[] paramTypes; //表示方法参数类型

  private Object[] params; //表示方法参数值

  private Object result;  //表示方法的返回值或者方法抛出的异常

  

  public Call(){}

  public Call(String className,String methodName,Class[] paramTypes,

                            Object[] params){

    this.className=className;

    this.methodName=methodName;

    this.paramTypes=paramTypes;

    this.params=params;

  }

  

  public String getClassName(){return className;}

  public void setClassName(String className){this.className=className;}

  public String getMethodName(){return methodName;}

  public void setMethodName(String methodName){this.methodName=methodName;}

  public Class[] getParamTypes(){return paramTypes;}

  public void setParamTypes(Class[] paramTypes){this.paramTypes=paramTypes;}

  public Object[] getParams(){return params;}

  public void setParams(Object[] params){this.params=params;}

  public Object getResult(){return result;}

  public void setResult(Object result){this.result=result;}

  public String toString(){

    return "className="+className+" methodName="+methodName;

  }

}