////////////////// Load.java

package org.bromon.reflect;

import java.util.ArrayList;
import java.util.List;

public class Load implements Operator {

 @Override
 public List<?> act(List<?> params) {
 // TODO Auto-generated method stub
 List<String> result=new ArrayList<String>();
 result.add(new String("加載成功"));
 return result;
 }

}

/////////////////// Operator.java

package org.bromon.reflect;
import java.util.*;

public interface Operator {
 public List<?> act(List<?> params);
}


/////////////Store.java

package org.bromon.reflect;

import java.util.ArrayList;
import java.util.List;


public class Store implements Operator {

 @Override
 public List<?> act(List<?> params) {
 // TODO Auto-generated method stub
 List<String> result=new ArrayList<String>();
 result.add(new String("Store"));
 return result;
 }

}

///////////////Success.java

package org.bromon.reflect;

import java.util.List;
import java.util.ArrayList;


public class Success implements Operator {

 @Override
 public List<?> act(List<?> params) {
 // TODO Auto-generated method stub
 List<String> result=new ArrayList<String>();
 result.add(new String("操作成功"));
 return result;
 }
}


////////////////////////TestReflect.java

package org.bromon.reflect;

import java.io.FileInputStream;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Properties;
import java.util.List;

public class TestReflect {
 private String loadProtocal(String header) {
 String result = null;
 try {
  Properties prop = new Properties();
  FileInputStream fis = new FileInputStream("emp.properties");
  prop.load(fis);
  result = prop.getProperty(header);
  fis.close();
 } catch (Exception e) {
  System.out.println(e);
 }
 return result;
 }

 // 針對消息作出響應(yīng),利用反射導(dǎo)入對應(yīng)的類
 public String response(String header, String content) {
 String result = null;
 String s = null;
 try {
  /*
  * 導(dǎo)入屬性文件emp.properties,查詢header所對應(yīng)
  *
  * 的類的名字 通過反射機(jī)制動態(tài)加載匹配的類,所有的類都
  *
  * 被Operator接口隔離 可以通過修改屬性文件、添加新的類(繼
  *
  * 承MsgOperator接口)來擴(kuò)展協(xié)議
  */
  s = "org.bromon.reflect." + this.loadProtocal(header);
  // 加載類
  Class<?> c = Class.forName(s);
  // 創(chuàng)建類的事例
  Operator mo = (Operator) c.newInstance();
  
  // 構(gòu)造參數(shù)列表
  Class<?> params[] = new Class[1];
  params[0] = Class.forName("java.util.List");
  
  // 查詢act方法
  Method m = c.getMethod("act", params);
  List<String> args = new ArrayList<String>();
  args.add(content);
  
  // 調(diào)用方法并且獲得返回
  Object returnObject = m.invoke(mo, args);
  List<?> list=(List<?>)returnObject;
  System.out.println(list.get(0));
 } catch (Exception e) {
  System.out.println("Handler-response:" + e);
 }
 return result;
 }
 public static void main(String args[]) {
 TestReflect tr = new TestReflect();
 tr.response("2000", "消息內(nèi)容");
 }
}