java对象转变为map

直接上代码

package com.**.**.**.common;

import com.**.**.**.util.JsonUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.util.ReflectionUtils;

import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

public class ClassUtils {

    public static void main(String[] args) {
        User u = new User(1L, "zyydd", "北京", "110");
        System.out.println(JsonUtils.toJSONString(u));
        Map<String, Object> map = parseObj2Map(u);
        System.out.println(JsonUtils.toJSONString(map));
    }

    public static Map<String, Object> parseObj2Map(Object args) {
        return Arrays.stream(BeanUtils.getPropertyDescriptors(args.getClass()))
                .filter(pd -> !"class".equals(pd.getName()))
                .collect(HashMap::new,
                        (map, pd) -> map.put(pd.getName(), ReflectionUtils.invokeMethod(pd.getReadMethod(), args)),
                        HashMap::putAll);
    }

    public static class User {
        Long id;
        String name;
        String addr;
        String mobile;

        User(Long id, String name, String addr, String mobile) {
            this.id = id;
            this.name = name;
            this.addr = addr;
            this.mobile = mobile;
        }

        public Long getId() {
            return id;
        }

        public void setId(Long id) {
            this.id = id;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public String getAddr() {
            return addr;
        }

        public void setAddr(String addr) {
            this.addr = addr;
        }

        public String getMobile() {
            return mobile;
        }

        public void setMobile(String mobile) {
            this.mobile = mobile;
        }
    }

}

执行结果