JSON解析&FastJson

一，简介由阿里巴巴开发，是一种高性能的JSON解析工具①快速FAST(比其它任何基于Java的解析器和生成器更快，包括jackson）②强大（支持普通JDK类包括任意JavaBeanClass、Collection、Map、Date或enum）③零依赖（没有依赖其它任何类库除了JDK）解析对象:JSON.parseObject(Stringstr,Class<T>);

importcom.alibaba.fastjson.JSON;

publicclassFastJsonDemo01{

	publicstaticvoidmain(String[]args){

StringjsonStr="{'name':'mixm','age':21,'gender':'男','hobby':['football','basketball']}";

Personp=JSON.parseObject(jsonStr,Person.class);

System.out.println(p);

}

}

解析数组:JSON.parseArray(Stringstr,Class<T>)

importjava.util.List;

importcom.alibaba.fastjson.JSON;

publicclassFastJsonDemo02{

	publicstaticvoidmain(String[]args){

StringjsonStr="[{'name':'mixm','age':21,'gender':'男','hobby':['football','basketball']},{'name':'mixm2','age':22,'gender':'男','hobby':['football','basketball']}]";

List<Person>p=JSON.parseArray(jsonStr,Person.class);

for(Personperson:p){

	System.out.println(person);

}

}

}

生成JSON字符串：JSON.toJSON(Objectobj);

importjava.util.ArrayList;

importjava.util.List;

importcom.alibaba.fastjson.JSON;

importcom.mixm.json.ch05.Person;

publicclassFastJsonDemo03{

	publicstaticvoidmain(String[]args){

List<String>hobby=newArrayList<>();

hobby.add("football");

hobby.add("basketball");

Personp1=newPerson("mixm",21,"男",hobby);

p1.setHobby(hobby);

//对象

Objectobj=JSON.toJSON(p1);

System.out.println(obj);

//数组

List<Person>persons=newArrayList<>();

persons.add(p1);

Personp2=newPerson("marry",23,"女",hobby);

persons.add(p2);

obj=JSON.toJSON(persons);

System.out.println(obj);

}

}