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java反射挟制赋值

www.myexceptions.net  网友分享于：2014-07-17  浏览：0次

java反射强制赋值

package com.my.reflect;

import java.lang.reflect.Field;

/**

* 反射赋值

* @author mengyao

*

*/

public class ReflectSet {

/**

* 用于对类的字段赋值，无视private,project修饰符,无视set/get方法

* @param c 要反射的类

* @param args 类的字段名和值 每个字段名和值用英文逗号隔开

* @return

*/

public static Object getInstance(Class> caz, String... args) {

try {

//装载指定类后创建类对象

Object object = Class.forName(caz.getName()).newInstance();

//通过实例对象取得用取得在内存中该实际类型class对象的引用

Class> obj = object.getClass();

Field[] fields = obj.getDeclaredFields();

for (int i = 0; i < fields.length; i++) {

fields[i].setAccessible(true);

for (int j = 0; j < args.length; j++) {

String str = args[j];

String strs[] = str.split(",");

if (strs[0].equals(fields[i].getName())) {

fields[i].set(object, strs[1]);

break;

}

}

}

return object;

} catch (IllegalAccessException e) {

e.printStackTrace();

} catch (ClassNotFoundException e) {

e.printStackTrace();

} catch (InstantiationException e) {

e.printStackTrace();

}

return null;

}

public static void main(String[] args) {

Object object=getInstance(SendInfo.class,"destID,01201101","mobile,15810022404","content,测试数据。");

SendInfo sms=(SendInfo)object;

System.out.println("短信内容："+sms.getContent());

System.out.println("手机号码："+sms.getMobile());

System.out.println("尾号："+sms.getDestID());

//String.class==new String().getClass()结果为true，

//String.class是通过类名的引用取得在内存中该类型class对象的引用;new String().getClass()是通过实例对象取得用取得在内存中该实际类型class对象的引用

System.out.println(String.class==new String().getClass());

}

}

class SendInfo {

private String destID;

private String mobile;

private String content;

public SendInfo() {

}

public SendInfo(String destID, String mobile, String content) {

this.destID = destID;

this.mobile = mobile;

this.content = content;

}

public String getDestID() {

return destID;

}

public void setDestID(String destID) {

this.destID = destID;

}

public String getMobile() {

return mobile;

}

public void setMobile(String mobile) {

this.mobile = mobile;

}

public String getContent() {

return content;

}

public void setContent(String content) {

this.content = content;

}

}

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