Java中利用反射来显示对象所有属性和值

利用反射获取简单对象的属性和值

package cn.resolvewang;

import com.sun.deploy.util.ArrayUtil;

import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;

/**
 * JDK1.8
 * Created by Administrator on 2016/10/20.
 * Used to display all fields and values of a non-iterable object and not including its super metas
 */
public class ObjectToString {
    public static String ToString(Object obj){
        if (obj == null){
            return "";
        }
        List<String> fieldValueList = new ArrayList<>();
        Class cls = obj.getClass();
        Field[] fields = cls.getDeclaredFields();
        AccessibleObject.setAccessible(fields, true);
        for(Field field:fields){
            String temp = field.getName() + "=" ;
            try{
                Object val = field.get(obj);
                temp += val.toString();
                fieldValueList.add(temp);
            }catch (Exception e){
                e.printStackTrace();
            }
        }
        return String.join(",", fieldValueList);
    }
}