使用JSON.NET解析json字符串

Question

我在C#中有一个类似下面的字符串.我需要循环并创建一个HTML表输出.我尝试使用JSON.NET但无法弄清楚如何检索密钥(名称,年龄和工作).

string data = "{items:[
{'Name':'AAA','Age':'22','Job':'PPP'}
,{'Name':'BBB','Age':'25','Job':'QQQ'}
,{'Name':'CCC','Age':'38','Job':'RRR'}]}";

表格式是

.........................  
| Name  | Age   | Job   |  
.........................  
| AAA   | 22    | PPP   |  
.........................  
| BBBB  | 25    | QQQ   |  
.........................  
| CCC   | 28    | RRR   |  
.........................   

任何帮助将不胜感激.

---

Dave提供的代码是理想的解决方案..但它适用于.NET 4.0 ..我使用以下代码与JSON.NET for .NET 3.5

使用Newtonsoft.Json.Linq;

string jsonString = "{items:[{'Name':'Anz','Age':'29','Job':''},{'Name':'Sanjai','Age':'28','Job':'Developer'},{'Name':'Rajeev','Age':'31','Job':'Designer'}]}";

        JObject root = JObject.Parse(jsonString);

        JArray items = (JArray)root["items"];

        JObject item;
        JToken jtoken;

        for (int i = 0; i < items.Count; i++) //loop through rows
        {
            item = (JObject)items[i];
            jtoken = item.First;

            while (jtoken != null)//loop through columns
            {
                Response.Write(((JProperty)jtoken).Name.ToString() + " : " + ((JProperty)jtoken).Value.ToString() + "<br />");

                jtoken = jtoken.Next;
            }
        }

Answer 1

您可以使用.NET 4的动态类型和内置的JavaScriptSerializer来实现这一点.这样的事情,也许:

string json = "{\"items\":[{\"Name\":\"AAA\",\"Age\":\"22\",\"Job\":\"PPP\"},{\"Name\":\"BBB\",\"Age\":\"25\",\"Job\":\"QQQ\"},{\"Name\":\"CCC\",\"Age\":\"38\",\"Job\":\"RRR\"}]}";

var jss = new JavaScriptSerializer();

dynamic data = jss.Deserialize<dynamic>(json);

StringBuilder sb = new StringBuilder();

sb.Append("<table>\n  <thead>\n    <tr>\n");

// Build the header based on the keys in the
//  first data item.
foreach (string key in data["items"][0].Keys) {
        sb.AppendFormat("      <th>{0}</th>\n", key);
}

sb.Append("    </tr>\n  </thead>\n  <tbody>\n");

foreach (Dictionary<string, object> item in data["items"]) {
    sb.Append("    <tr>\n");

    foreach (string val in item.Values) {
        sb.AppendFormat("      <td>{0}</td>\n", val);
    }
}

sb.Append("    </tr>\n  </tbody>\n</table>");

string myTable = sb.ToString();

最后,myTable将保存一个如下所示的字符串:

<table>
    <thead>
        <tr>
            <th>Name</th>
            <th>Age</th>
            <th>Job</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>AAA</td>
            <td>22</td>
            <td>PPP</td>
        <tr>
            <td>BBB</td>
            <td>25</td>
            <td>QQQ</td>
        <tr>
            <td>CCC</td>
            <td>38</td>
            <td>RRR</td>
        </tr>
    </tbody>
</table>