需求
gson是常用的框架
分析
1.如何解析数组
[
{
"id": "1",
"tag": "tag1",
"tobe": "tobe1"
},
{
"id": "2",
"tag": "tag2",
"tobe": "tobe2"
}
]
Gson gson = new Gson();
Course[] courses = gson.fromJson(sg.toString(), Course[].class);
2.带数据头的数组数据
{
"code":"1",
"msg":"success",
"data":[
{ "id": "1",
"info": "1连",
"parent_id":"0",
"tobe": "tobe1"
},
{ "id": "2",
"info": "2连",
"parent_id":"1",
"tobe": "tobe1"
},
{ "id": "3",
"info": "3连",
"parent_id":"2",
"tobe": "tobe1"
}
]
}
public class DataHead<T> {
public int code;
public String msg;
@SerializedName(value = "datas",alternate = {"data","dataa"})
public T[] datas;
}
Gson gson = new Gson();
Type unitType = new TypeToken<DataHead<Unit>>(){}.getType();
DataHead<Unit> head = gson.fromJson(str,unitType);
return head.datas;
3.jsonReader使用
4.遇到空字符串时如果转换类型会报错的
