Json Gson类型转换

String->List

字段AA 值[“1”,“2”] 类型 test

List<String> projectIdList = gson.fromJson(AA,new TypeToken<List<String>>(){}.getType());
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转完之后的结果为[1,2]

对象转Json

生成Json字符串
Gson gson = new Gson();
List < Person > persons = new ArrayList < Person > ();
for ( int i = 0 ; i < 3 ; i ++ ) {
Person p = new Person();
p.setName( " name " + i);
p.setAge(i * 5 );
persons.add(p);
}
String str = gson.toJson(persons);
上面的代码重点是Gson对象，它提供了toJason()方法将对象转换成Json字符串，上面代码的str对象值为：

[{"name":"name0","age":0},{"name":"name1","age":5},{"name":"name2","age":10},
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