用Gson实现json与对象、list集合之间的相互转化

/1.把json转化为一个类对象

 

String jsonData="{\'userid\':\'1001\',\'username\':\'张三\',\'usersex\':\'男\',\'banji\':\'计算机班\',\'phone\':\'1008623232\'}";
Gson gson=new Gson();
Person person=gson.fromJson(jsonData,Person.class);
System.out.println(person.toString());

 

 

   // 2.把jsonList转化为一个list对象

String jsonList="[{\'userid\':\'1001\',\'username\':\'张三\',\'usersex\':\'男\',\'banji\':\'计算机1班\',\'phone\':\'1213123\'},"
+ "{\'userid\':\'1002\',\'username\':\'李四\',\'usersex\':\'男\',\'banji\':\'计算机1班\',\'phone\':\'232323\'},"
+ "{\'userid\':\'1003\',\'username\':\'王五\',\'usersex\':\'男\',\'banji\':\'计算机1班\',\'phone\':\'432423423\'}]";
Gson gson1=new Gson();
List<Person> list= gson1.fromJson(jsonList, new TypeToken<List<Person>>() {}.getType());
for (Person person1 : list) {
System.out.println(person1.toString());
}

 

 //3.把list或对象转化为json

Gson gson2=new Gson();
String str=gson2.toJson(list);
System.out.println(str);