C#,json字符串转换成Json对象

将JSON的请求参数转化为C#可序列化对象！

JSON请求参数：

 "{\"id\":1,"name":"张三","dept":"销售部"}"

或多组：

 Json = "[{\"id\":1,"name":"张三","dept":"销售部"},{\"id\":2"name":"李四","dept":"销售部"}]"

首先要穷举可能用到的参数，或者每个请求单独写一个对象：

public class RequestParameters

{

    /// <summary>

    /// 应用范围：区域ID/部门ID/人员ID

    /// </summary>

    public string id { get; set; }

    /// <summary>

    /// 应用范围：姓名/区域名/部门名

    /// </summary>

    public string name { get; set; }

}

下面就是重点了，将字符串转化为实体对象

 public T ToJson<T>(string json)

    {

        System.IO.MemoryStream stream2 = new System.IO.MemoryStream();

        DataContractJsonSerializer ser2 = new DataContractJsonSerializer(typeof(T));

        StreamWriter wr = new StreamWriter(stream2);

        wr.Write(json);

        wr.Flush();

        stream2.Position = 0;

        Object obj = ser2.ReadObject(stream2);

        T param = (T)obj;

        return param;

    }

如果是返回一个List的话，就更简单了

 public List<T> ToJson<T>(string json)

    {

        System.IO.MemoryStream stream2 = new System.IO.MemoryStream();

        DataContractJsonSerializer ser2 = new DataContractJsonSerializer(typeof(List<T>));

        StreamWriter wr = new StreamWriter(stream2);

        wr.Write(json);

        wr.Flush();

        stream2.Position = 0;

        Object obj = ser2.ReadObject(stream2);

        List<T> params = (List<T>)obj;

        return param;

    }

就是这样，还有其他方法，比如使用正则表达式的：

private static void TestRegex18()

{

    string jstring = "{\"112\":1,\"325\":2,\"109\":3}";

    MatchCollection mc = Regex.Matches(jstring, @"""(?<key>[^""]+)"":(?<value>[^,}]+)");

    Dictionary<string, string> dict = new Dictionary<string, string>();

    foreach (Match m in mc)

    {

        if(dict.ContainsKey(m.Groups["key"].Value)) continue;//不能重复啊

        dict.Add(m.Groups["key"].Value, m.Groups["value"].Value);

    }

    //dict

}

巴特西

C#,json字符串转换成Json对象

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