通过JSON.Net打破JSON中的对象列表

时间:2012-11-26 19:12:31

标签: c# json.net

我正在构建服务器仪表板应用程序。我想从每个服务器中获取一个磁盘列表,并创建一个列表,显示每个服务器的使用值。

这是我们回来的JSON示例......

    {"server":"webster","disks":[ {"use": "91%", "used": "16G", "mount": "/", "free": "1.6G", "device": "/dev/mapper/vg_f12-lv_root", "total": "18G", "type": "ext4"} ,
{"use": "0%", "used": "0", "mount": "/dev/shm", "free": "500M", "device": "tmpfs", "total": "500M", "type": "tmpfs"} ,
{"use": "22%", "used": "40M", "mount": "/boot", "free": "145M", "device": "/dev/sda1", "total": "194M", "type": "ext4"} ,
{"use": "47%", "used": "52G", "mount": "/rsync", "free": "61G", "device": "/dev/sdb1", "total": "119G", "type": "ext3"} ]}

我用C#代码得到了这个:

            WebClient c = new WebClient();
            var data = c.DownloadString("http://192.0.0.40:8000/cgi-bin/df.py");
            JObject o = JObject.Parse(data);
            string serv = o["server"].Select(s => (string)s).ToString();
            lblJson.Text = serv;

但我似乎无法提取磁盘"我可以插入列表视图的任何有意义的东西。我已经尝试将其用于IList,但它总是崩溃或给我一些来自Intellisense的粗鲁评论。

我确实有一个为此而建的课程,但是没有想出如何将信息移植到其中。作为参考,它在这里:

public class drive
    {
        public string Usage;
        public string usedSpace;
        public string Mount;
        public string freeSpace;
        public string Device;
        public string Total;
        public string Type;
    }

注意:JSON的源代码是Linux服务器。 Windows服务器最终将以不同的格式提供数据。

然后我们有了VMWare,但我稍后会对此进行讨论。

提前致谢。

2 个答案:

答案 0 :(得分:4)

var jsonObj = JsonConvert.DeserializeObject<RootObject>(json);


public class RootObject
{
    [JsonProperty("server")]
    public string Server;
    [JsonProperty("disks")]
    public List<Drive> Disks;
}

public class Drive
{
    [JsonProperty("use")]
    public string Usage;
    [JsonProperty("used")]
    public string usedSpace;
    [JsonProperty("mount")]
    public string Mount;
    [JsonProperty("free")]
    public string freeSpace;
    [JsonProperty("device")]
    public string Device;
    [JsonProperty("total")]
    public string Total;
    [JsonProperty("type")]
    public string Type;
}

答案 1 :(得分:2)

可能有更好的方法来执行此操作,但使用提供的drive类,以下内容可用于反序列化您提供的JSON:

JObject o = JObject.Parse(data);
List<drive> drives = new List<drive>();
string server = (string)o["server"];
foreach (var d in o["disks"].Children())
{
    drives.Add(new drive()
    {
        Usage = (string)d["use"],
        usedSpace = (string)d["used"],
        Mount = (string)d["mount"],
        freeSpace = (string)d["free"],
        Device = (string)d["device"],
        Total = (string)d["total"],
        Type = (string)d["type"]
    });
}