json扩展

using Newtonsoft.Json.Linq;namespace Utility{ ???public static class JsonExt ???{ ???????/// <summary> ???????/// 转换为JObject对象 ???????/// </summary> ???????/// <param name="str"></param> ???????/// <returns></returns> ???????public static JObject ToJObject(this string str) ???????{ ???????????JObject j = new JObject(); ???????????try ???????????{ ???????????????j = JObject.Parse(str); ???????????} ???????????catch ???????????{ ???????????} ???????????return j; ???????} ???????/// <summary> ???????/// 转换为JArray对象 ???????/// </summary> ???????/// <param name="str"></param> ???????/// <returns></returns> ???????public static JArray ToJArray(this string str) ???????{ ???????????JArray j = new JArray(); ???????????try ???????????{ ???????????????j = JArray.Parse(str); ???????????} ???????????catch ???????????{ ???????????} ???????????return j; ???????} ???????/// <summary> ???????/// 根据键获取值 ???????/// </summary> ???????/// <param name="jo"></param> ???????/// <param name="key"></param> ???????/// <returns></returns> ???????public static string JValue(this JObject jo, string key) ???????{ ???????????string val = string.Empty; ???????????try ???????????{ ???????????????val = jo[key].ToString(); ???????????} ???????????catch ???????????{ ???????????} ???????????return val; ???????} ???????/// <summary> ???????/// 检查JObject是否含有指定key值 ???????/// </summary> ???????/// <param name="jo"></param> ???????/// <param name="key"></param> ???????/// <returns></returns> ???????public static bool CheckKey(this JObject jo, string key) ???????{ ???????????if (jo != null && jo.Count > 0) ???????????????if (jo.Property(key) != null) ???????????????????return true; ???????????return false; ???????} ???}}