实体对象转成Map/Map转成实体对象的工具类 - ruiguang21的博客 - CSDN博客

安宇雨 - 随手采集
2019-03-18 18:21:06
随手采集
0000-未整理-等待研究

package com.yanshu.test;

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.*;
/**
* 实体对象转成Map
* @author Administrator
*
*/
public class MapTrunPojo {
/**
* 实体对象转成Map
* @param obj 实体对象
* @return
*/
public static Map<String, Object> object2Map(Object obj) {
Map<String, Object> map = new HashMap<>();
if (obj == null) {
return map;
}
Class clazz = obj.getClass();
Field[] fields = clazz.getDeclaredFields();
try {
for (Field field : fields) {
field.setAccessible(true);
map.put(field.getName(), field.get(obj));
}
} catch (Exception e) {
e.printStackTrace();
}
return map;
}
/**
* Map转成实体对象
* @param map map实体对象包含属性
* @param clazz 实体对象类型
* @return
*/
public static Object map2Object(Map<String, Object> map, Class<?> clazz) {
if (map == null) {
return null;
}
Object obj = null;
try {
obj = clazz.newInstance();

Field[] fields = obj.getClass().getDeclaredFields();
for (Field field : fields) {
int mod = field.getModifiers();
if (Modifier.isStatic(mod) || Modifier.isFinal(mod)) {
continue;
}
field.setAccessible(true);
field.set(obj, map.get(field.getName()));
}
} catch (Exception e) {
e.printStackTrace();
}
return obj;
}

}

---------实体类

package com.yanshu.test;

public class Student {
private String userName;
private String age;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
@Override
public String toString() {
return "Student [userName=" + userName + ", age=" + age + "]";
}

}

-----test

package com.yanshu.test;

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

public class Test {

public static void main(String[] args) {
// TODO Auto-generated method stub
Student s = new Student();
s.setUserName("ZHH");
s.setAge("24");
System.out.println(MapTrunPojo.object2Map(s));

Map<String, Object> map = new HashMap<>();
map.put("userName", "zhh");
map.put("age", "24");
System.out.println(MapTrunPojo.map2Object(map, Student.class));
}

}

Original url: Access
Created at: 2019-03-18 18:21:06
Category: default
Tags: none

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