基于java反射的javabean和map相互转换的工具类

Posted 2020-08-21 YangJavaer

话不多说，代码如下

package com.study;

import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;

/**
 * PackageName  com.study
 * Description  please write description.
 * User:        yh
 * Time:        2016/11/29 16:57
 */
public class mapUtil
{
    /**
     * javaBean 转 Map
     * @param object 需要转换的javabean
     * @return  转换结果map
     * @throws Exception
     */
    public static Map<String, Object> beanToMap(Object object) throws Exception
    {
        Map<String, Object> map = new HashMap<String, Object>();

        Class cls = object.getClass();
        Field[] fields = cls.getDeclaredFields();
        for (Field field : fields) {
            field.setAccessible(true);
            map.put(field.getName(), field.get(object));
        }
        return map;
    }

    /**
     *
     * @param map   需要转换的map
     * @param cls   目标javaBean的类对象
     * @return  目标类object
     * @throws Exception
     */
    public static Object mapToBean(Map<String, Object> map, Class cls) throws Exception
    {
        Object object = cls.newInstance();
        for (String key : map.keySet()){
            Field temFiels = cls.getDeclaredField(key);
            temFiels.setAccessible(true);
            temFiels.set(object, map.get(key));
        }
        return object;
    }
}