java反射强制赋值 博客分类： java

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;
}

}