String name;
int age;
String sex;
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 String getSex() {
	return sex;
}
public void setSex(String sex) {
	this.sex = sex;
}

public static void main(String[] args) {
	
	User user1 = new User();
	user1.name = "张三";
	user1.age = 18;
	user1.sex="男";
	
	//JAVA对象转json
	Gson gson = new Gson();
	String jsonStr = gson.toJson(user1);
	System.out.println(jsonStr);
	
	//将json字符串转换为JAVA对象
	User user = gson.fromJson(jsonStr, User.class);
	System.out.println(user.name);
}