JSON.toJSONString 首字母不小写

1、在字段上加注解@JSONField

package com.cjh.wechatmp.po;

import com.alibaba.fastjson.annotation.JSONField;

import lombok.Data;

import lombok.NoArgsConstructor;

@NoArgsConstructor

@Data

public class InMessageText {

@JSONField(name = "ToUserName")

private String ToUserName;

@JSONField(name = "FromUserName")

private String FromUserName;

private String CreateTime;

private String MsgType;

private String Content;

private String MsgId;

}

优点：少量的话简单方便

缺点：入侵性强，懒得每个加

2、自定义配置

优点： 逼格高

缺点：并不是忽略不转，而是转了小写，再转回来大写

package com.wechat.util;

import java.util.Map;

import net.sf.json.JSONException;

import net.sf.json.JSONObject;

import net.sf.json.JsonConfig;

import net.sf.json.util.JavaIdentifierTransformer;

import net.sf.json.util.PropertySetStrategy;

public class JsonUtil {

public static Object toBean(JSONObject jsonObject, Class rootClass,

String[] ignoreLowercase, Map<String, Class> childClass) {

JsonConfig config = new JsonConfig();

//转换对象

config.setRootClass(rootClass);

//首字母小写

config.setJavaIdentifierTransformer(new JavaIdentifierTransformer() {

@Override

public String transformToJavaIdentifier(String str) {

if (ignoreLowercase.length > 0) {

for (String item : ignoreLowercase) {

if (str.indexOf(item) == 0) {

return str;

}

}

}

char[] chars = str.toCharArray();

chars[0] = Character.toLowerCase(chars[0]);

return new String(chars);

}

});

//对象里没有的属性忽略

config.setPropertySetStrategy(new PropertySetStrategy() {

@Override

public void setProperty(Object o, String s, Object o1) throws JSONException {

try {

PropertySetStrategy.DEFAULT.setProperty(o, s, o1);

} catch (JSONException e) {

}

}

});

//自定义的list声明

if (childClass != null) {

config.setClassMap(childClass);

}

return JSONObject.toBean(jsonObject, config);

}

}

3、用Gson代替(推荐)

优点：简单方便

缺点：要添加依赖，不过不会和之前的冲突哦

<!-- gson -->

<dependency>

<groupId>com.google.code.gson</groupId>

<artifactId>gson</artifactId>

<version>2.8.5</version>

</dependency>

效果：

InMessageText(ToUserName=toUser, FromUserName=fromUser, CreateTime=1348831860, MsgType=text, Content=this is a test, MsgId=1234567890123456)

<xml><Content><![CDATA[this is a test]]></Content><CreateTime><![CDATA[1348831860]]></CreateTime><ToUserName><![CDATA[toUser]]></ToUserName><FromUserName><![CDATA[fromUser]]></FromUserName><MsgType><![CDATA[text]]></MsgType><MsgId><![CDATA[1234567890123456]]></MsgId></xml>

Gson--->{"ToUserName":"toUser","FromUserName":"fromUser","CreateTime":"1348831860","MsgType":"text","Content":"this is a test","MsgId":"1234567890123456"}

JSONObject--->{"content":"this is a test","createTime":"1348831860","fromUserName":"fromUser","msgId":"1234567890123456","msgType":"text","toUserName":"toUser"}