list<对象> 集合 和 String 互转

maven 项目

首先导入alibaba的jar包

<dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.54</version>
</dependency>

构建集合对象

 User user = new User("小陈", 1, 25);User user1 = new User("小杨", 1, 26);List<User> list = new ArrayList<>();list.add(user);list.add(user1);System.out.println("原装List：" + list);System.out.println("================================");

原装List：[User{name='小陈', sex=1, year=25}, People{name='小杨', sex=1, year=26}]

list集合转String

/***List转string*/String listToString = JSON.toJSONString(list);System.out.println("List转String结果：" + listToString);System.out.println("=================================");

List转String结果：[{"name":"小陈","sex":1,"year":25},{"name":"小杨","sex":1,"year":26}]

String转回list集合

    /***String转List*/List<User> stringToList = JSON.parseArray(listToString, User.class);System.out.println("String转List结果：" + stringToList);

　　String转List结果：[User{name='小陈', sex=1, year=25}, People{name='小杨', sex=1, year=26}]