Android的GSON反序列化到列表 [英] Android gson deserialization into list

问题描述

我试图JSON字符串解析到一个列表或数组列表。我有以下的JSON响应，从我一个Android项目

创建了一个WCF RESTful服务来

  [
    {
        类：排版
        公司：存有
        ID：XXXX，
        名称：新安怡
    }，
    {
        类：Consectetur
        公司：Adipiscing
        ID：YYYYY
        名称：法无
    }
]
 

我读过的若干个的就在这里解析GSON结果的例子，但我有困难，制定一个容器类，因为我已经看到了。我已经得到它读取一个结果成组类，但不能让它解析到任何种类的列表或ArrayList的。

组类：

 公共类组{    私人字符串ID;
    私人字符串名称;
    私人String类;
    私人字符串公司;
}
 

组容器类：

 公共类组{
    私人列表＆LT;组＆gt; GRP;
}
 

GSON解析的语句：

 组GRP = gson.fromJson（jsonString，Groups.class）;
 

我也有做jsonString的一些处理，因为它显示与字符串（逗号之后）在某些空间了，它开始工作后，我把他们赶走，至少解析成一个单一的元素。不知道这影响什么，但想我会提到它。

另外，我试着做

键入listType =新TypeToken>（）{} .getType（）;
gson.toJson（myStrings，listType）;

但似乎并不要么工作，我不知道如果我的情况是必要的。

解决方案

 列表＆LT;组＆gt;组= gson.fromJson（jsonString，新TypeToken＆LT;名单，LT;组＆gt;＆GT;（）{} .getType（））
 

I am trying to parse a json string into a list, or arraylist. I have the following json response coming from a WCF RESTful service I created for an Android project

[
    {
        "Class": "Lorem",
        "Company": "Ipsum",
        "Id": "XXXX",
        "Name": "Avent"
    },
    {
        "Class": "Consectetur",
        "Company": "Adipiscing",
        "Id": "YYYYY",
        "Name": "Nulla"
    }
]

I've read several examples of parsing gson results on here, but I'm having difficulty enacting a container class as I've seen. I've gotten it to read a single result into a Group class, but cannot get it to parse into any kind of List or ArrayList.

Group Class:

public class Group {

    private String Id;
    private String Name;
    private String Class;
    private String Company;   
}

Group Container Class:

public class Groups {
    private List<Group> GRP;
}

gson parsing statement:

Groups GRP = gson.fromJson(jsonString, Groups.class);

I did have to do some manipulation of the jsonString because it was showing up with some spaces in the string (after the commas), and it started working after I removed them, at least for parsing into a single element. Not sure if that effects anything, but figured I'd mention it.

Also, I tried do the

Type listType = new TypeToken>() {}.getType(); gson.toJson(myStrings, listType);

but that doesn't seem to work either, and I didn't know if that is necessary for my situation.

解决方案

List<Group> groups = gson.fromJson(jsonString, new TypeToken<List<Group>>() {}.getType())

这篇关于Android的GSON反序列化到列表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！