反射例子希望对大家有帮助

//有数据的bean  
package  utilbeans;  public  class  UtilsBeansOne  {  
       public  UtilsBeansOne()  {  
       }  
 
       public  String  getPassword()  {  
               return  password;  
       }  
 
       public  String  getUserName()  {  
               return  userName;  
       }  
 
       public  void  setUserName(String  userName)  {  
               this.userName  =  userName;  
       }  
 
       public  void  setPassword(String  password)  {  
               this.password  =  password;  
       }  
 
       private  String  userName  =  "张三";  
       private  String  password  =  "123456";  
}  
//////////////////////////////////////////  
没有数据的bean  
package  utilbeans;  public  class  UtilsBeansTwo  {  
       public  UtilsBeansTwo()  {  
       }  
 
       public  String  getPassword()  {  
               return  password;  
       }  
 
       public  String  getUserName()  {  
               return  userName;  
       }  
 
       public  void  setUserName(String  userName)  {  
               System.out.println(userName);  
               this.userName  =  userName;  
       }  
 
       public  void  setPassword(String  password)  {  
               System.out.println(password);  
               this.password  =  password;  
       }  
 
       private  String  userName  =  null;  
       private  String  password  =  null;  
 
}  
///////////////////////////////////////////  
具体的填充方法  
package  utilbeans;  
 
import  java.lang.reflect.Method;  
import  java.lang.reflect.*;  
  
public  class  UtilsBeansTest  {  
       public  UtilsBeansTest()  {  
       }  
 
       /**  
         *  此功能为将第一个对象的内容填充到第二个对象中  
         *  @param  oneObject  String  内容已经存在的对象  
         *  @param  twoObject  String  要填充的对象  
         */  
       public  static  Object  utilBean(String  oneObject,  String  twoObject)  {  
               Class  utilOneClass  =  null;  
               Class  utilTwoClass  =  null;  
               try  {  
 
                       //将字符串转化为Class对象  
                       utilOneClass  =  Class.forName(oneObject);  
                       utilTwoClass  =  Class.forName(twoObject);  
               }  catch  (ClassNotFoundException  ex)  {  
                       System.out.println(ex.toString());  
                       return  null;  
               }  
 
               Object  objUtilBeanOne  =  null;  
               Object  objUtileBeanTwo  =  null;  
               try  {  
 
                       //创建对象实例  
                       objUtilBeanOne  =  utilOneClass.newInstance();  
                       objUtileBeanTwo  =  utilTwoClass.newInstance();  
               }  catch  (IllegalAccessException  ex1)  {  
                       System.out.println(ex1.toString());  
                       return  null;  
               }  catch  (InstantiationException  ex1)  {  
                       System.out.println(ex1.toString());  
                       return  null;  
               }  
 
               //获得对象的所有方法；  
               Method[]  oneMethod  =  utilOneClass.getDeclaredMethods();  
               Method[]  twoMethod  =  utilTwoClass.getDeclaredMethods();  
 
               Method  oneBeanMethod  =  null;  
               Method  twoBeanMethod  =  null;  
 
               //循环所有方法  
               for  (int  oneIndex  =  0;  oneIndex  <  oneMethod.length;  oneIndex++)  {  
                       oneBeanMethod  =  oneMethod[oneIndex];  
                       String  oneMethodName  =  oneBeanMethod.getName();  
 
                       //判断是否为get方法  
                       if  (oneMethodName.indexOf("get")  >  -1)  {  
                               for  (int  twoIndex  =  0;  twoIndex  <  twoMethod.length;  twoIndex++)  {  
                                       twoBeanMethod  =  twoMethod[twoIndex];  
 
                                       //获得方法名  
                                       String  towMethodName  =  twoBeanMethod.getName();  
                                       String  oneName  =  oneMethodName.substring(oneMethodName.  
                                                       indexOf("get")  +  3);  
                                       String  twoName  =  towMethodName.substring(towMethodName.  
                                                       indexOf("set")  +  3);  
 
                                       //判断去掉get/set后的方法名是否相同  
                                       if  (oneName.equals(twoName))  {  
                                               try  {  
                                                       //获得第一个bean的值  
                                                       String  oneAttrValuedd  =  oneBeanMethod.invoke(  
                                                                       objUtilBeanOne,  null).toString();  
 
                                                       //将从第一个bean中取出的值，填充到第二个bean中  
                                                       Object[]  obj  =  {oneAttrValuedd};  
                                                         
                                                       //将obj内容填充到objUtileBeanTwo对象的twoBeanMethod方法中  
                                                       twoBeanMethod.invoke(  
                                                                       objUtileBeanTwo,  obj);  
                                               }  catch  (InvocationTargetException  ex2)  {  
                                                       System.out.println(ex2.toString());  
                                                       return  null;  
                                               }  catch  (IllegalArgumentException  ex2)  {  
                                                       ex2.printStackTrace();  
                                                       return  null;  
                                               }  catch  (IllegalAccessException  ex2)  {  
                                                       System.out.println(ex2.toString());  
                                                       return  null;  
                                               }  
                                       }  
                               }  
                       }  
               }  
               return  objUtileBeanTwo;  
       }  
 
       public  static  void  main(String[]  args)  {  
               //bean填充前  
               UtilsBeansTwo  utitlBean  =  new  UtilsBeansTwo();  
               System.out.println("username  :  "  +  utitlBean.getUserName());  
               System.out.println("password  :  "  +  utitlBean.getPassword());  
               UtilsBeansTwo  utitlBeanAfter  =  (UtilsBeansTwo)utilBean("utilbeans.UtilsBeansOne",  "utilbeans.UtilsBeansTwo");  
               System.out.println("---------------------------------------------");  
               //bean填充后  
               System.out.println("username  :  "  +  utitlBeanAfter.getUserName());  
               System.out.println("password  :  "  +  utitlBeanAfter.getPassword());  
       }  
}