fastjson（阿里）方法生成JSON数据：
与Gson类似，创建相应类，再使用JSON.toJSONString（）添加对象要求：生成如下JSON数据
1.{“age”:3,”name”:”zhangsan”,”sex”:true,”weight”:180}
代码：
package com.qf.demo7; import com.alibaba.fastjson.JSON; /** * Gson toJson * FastJson toJsonString * @author Administrator * */ public class Test { public static void main(String[] args) { Person1 person = new Person1("zhangsan",true,3,180); String json = JSON.toJSONString(person); System.out.println(json); } } class Person1{ private String name; private boolean sex; private int age; private int weight; public Person1(String name,boolean sex, int age,int weight) { super(); this.name = name; this.sex = sex; this.age = age; this.weight = weight; } public Person1() { super(); } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public int getWeight() { return weight; } public void setWeight(int weight) { this.weight = weight; } public boolean isSex() { return sex; } public void setSex(boolean sex) { this.sex = sex; } @Override public String toString() { return "Person [name=" + name + "sex = "+sex+", age=" + age + "]"; } }