数组转对象

最新推荐文章于 2023-10-20 15:37:01 发布

xiaoai

最新推荐文章于 2023-10-20 15:37:01 发布

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分类专栏： java 文章标签： java数组转对象

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本文介绍了一个实用的Java工具类，该类能够将数组数据自动转换为特定Java类的对象实例，通过反射机制实现。适用于快速构建对象场景。

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package com.syas.common.utilities;

import com.syas.web.models.FrmgerPfmceSearchModel;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
/**
 * Created by weigong on 2015/12/3.
 */
public class ArrayToObject {
    
    public static Object getObjectByArray(Object [] os,Class clazz){

        Field [] fields = clazz.getDeclaredFields();

        /*
        Method methlist[] = clazz.getDeclaredMethods();
        for (int i = 0; i < methlist.length; i++) {
            Method m = methlist[i];
            System.out.println("=====获取所有的方法名称：" + m.getName());
        }


        String[] types1={"int","java.lang.String","boolean","char","float","double","long","short","byte"};
        String[] types2={"Integer","java.lang.String","java.lang.Boolean","java.lang.Character","java.lang.Float","java.lang.Double","java.lang.Long","java.lang.Short","java.lang.Byte"};
        for (int j = 0; j < fields.length; j++) {
            fields[j].setAccessible(true);
            // 字段名
            System.out.print(fields[j].getName() + ":");
            // 字段值
            for(int i=0;i<types1.length;i++){
                if(fields[j].getType().getName()
                        .equalsIgnoreCase(types1[i])|| fields[j].getType().getName().equalsIgnoreCase(types2[i])){
                    try {
                        System.out.print(fields[j].get(clazz)+"     ");
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }
        }
        */

        Class[] argtype = new Class[fields.length];//代表构造方法的参数类型数组
        //遍历数组的字段
        for (int j = 0; j < fields.length; j++) {
            fields[j].setAccessible(true);
            // 字段名
           // System.out.print(fields[j].getName() + ":");
            argtype[j] = Object.class;
        }
        Constructor con;
        Object obj = null;
        try {
            con = clazz.getDeclaredConstructor(argtype);
            obj = con.newInstance(os);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return obj;
    }



    public static  void main(String []args){

        FrmgerPfmceSearchModel frmgerPfmceSearchModel = (FrmgerPfmceSearchModel)getObjectByArray(new Object[]{"A","B","C",1, 2}, FrmgerPfmceSearchModel.class);


        System.out.println("=======obj:"+frmgerPfmceSearchModel.getEzboUname());

    }


}