Fastjson

1
2
3
4
// 序列化
String text = JSON.toJSONString(obj);
// 反序列化
 Map<String, Object> foo = JSON.parseObject(jsonStr0, Map.class);

fastjson 对象转换时重命名字段名

1
2
3
4
5
@JSONField(name="total_count")
private int totalCount;

@JSONField(name="incomplete_results")
private boolean incompleteResults = false;

Map<String, Object> userMap =

JSON.parseObject(o, new TypeReference<Map<String, Object»() {});

使用Fastjson序列化与反序列化对象

public class JSONobject {

private String obj;

private String color;

public String getObj() { return obj; }

public void setObj(String obj) { this.obj = obj; }

public String getcolor() { return color; }

public void setcolor(String color) { this.color = color; }

}

public class fastjson {

public static void main(String[] args) {

// TODO Auto-generated method stub

JSONobject ins = new JSONobject();

ins.setColor(“red”);

ins.setObj(“s”);

//序列化

String text = JSON.toJSONString(ins);

System.out.println(text);

//反序列化

JSONobject ins1 = JSON.parseObject(text, JSONobject.class);

System.out.println(ins1.getColor());

System.out.println(ins1.getObj());

}

显示的结果是:

{“color”:“red”,“obj”:“s”}

red

先建立JSONobject类，对于类里面的每个变量分别都有两个配套函数，一个都不可以少，一个是set，一个是get,其中set,与get后面的字母必须以大写字母开头

如果解析List<object[]>类型的话，需要新版本的fastjson,旧版本的会出错，而且一定要有默认的构造函数

public class part {

public String attr;

public String value;

public String obj;

part(String obj,String attr,String value){

this.obj = obj;

this.attr = attr;

this.value = value;

}

part(){

}

public String getObj() { return obj; }

public void setObj(String obj) { this.obj = obj; }

public String getAttr() { return attr; }

public void setAttr(String attr) { this.attr = attr; }

public String getValue() { return value; }

public void setValue(String value) { this.value = value; }

}

import java.util.ArrayList;

import java.util.List;

public class JSONobject {

private String obj;

private String color;

private List parts = new ArrayList();

public List getPart() { return parts; }

public void setPart(List parts) { this.parts = parts; }

public String getObj() { return obj; }

public void setObj(String obj) { this.obj = obj; }

public String getColor() { return color; }

public void setColor(String color) { this.color = color; }

}

import com.alibaba.fastjson.JSON;

public class fastjson {

public static void main(String[] args) {

// TODO Auto-generated method stub

JSONobject ins = new JSONobject();

ins.setColor(“red”);

ins.setObj(“s”);

part p1 = new part(“head”,“color”,“red”);

part p2 = new part(“foot”,“color”,“green”);

ins.getPart().add(p1);

ins.getPart().add(p2);

//序列化

String text = JSON.toJSONString(ins);

System.out.println(text);

//反序列化

JSONobject ins1 = JSON.parseObject(text, JSONobject.class);

System.out.println(ins1.getColor());

System.out.println(ins1.getObj());

}

http://code.alibabatech.com/wiki/display/FastJSON/Tutorial
https://blog.csdn.net/quan20111992/article/details/88918585

Contents

Fastjson

fastjson 对象转换时重命名字段名