1 public class HttpClientHelper  2     {  3         /// <summary>  4         /// get请求  5         /// </summary>  6         /// <param name="url"></param>  7         /// <returns></returns>  8         public static string GetResponse(string url)  9         { 10             HttpClient httpClient = new HttpClient(); 11             httpClient.DefaultRequestHeaders.Accept.Add( 12                new MediaTypeWithQualityHeaderValue("application/json")); 13             HttpResponseMessage response = httpClient.GetAsync(url).Result; 14  15             if (response.IsSuccessStatusCode) 16             { 17                 string result = response.Content.ReadAsStringAsync().Result; 18                 return result; 19             } 20             return null; 21         } 22  23         public static T GetResponse<T>(string url) 24             where T : class,new() 25         { 26             HttpClient httpClient = new HttpClient(); 27             httpClient.DefaultRequestHeaders.Accept.Add( 28                new MediaTypeWithQualityHeaderValue("application/json")); 29             HttpResponseMessage response = httpClient.GetAsync(url).Result; 30  31             T result = default(T); 32  33             if (response.IsSuccessStatusCode) 34             { 35                 Task<string> t = response.Content.ReadAsStringAsync(); 36                 string s = t.Result; 37  38                 result = JsonConvert.DeserializeObject<T>(s); 39             } 40             return result; 41         } 42  43         /// <summary> 44         /// post请求 45         /// </summary> 46         /// <param name="url"></param> 47         /// <param name="postData">post数据</param> 48         /// <returns></returns> 49         public static string PostResponse(string url, string postData) 50         { 51             HttpContent httpContent = new StringContent(postData); 52             httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json"); 53             HttpClient httpClient = new HttpClient(); 54  55             HttpResponseMessage response = httpClient.PostAsync(url, httpContent).Result; 56  57             if (response.IsSuccessStatusCode) 58             { 59                 string result = response.Content.ReadAsStringAsync().Result; 60                 return result; 61             } 62             return null; 63         } 64  65         /// <summary> 66         /// 发起post请求 67         /// </summary> 68         /// <typeparam name="T"></typeparam> 69         /// <param name="url">url</param> 70         /// <param name="postData">post数据</param> 71         /// <returns></returns> 72         public static T PostResponse<T>(string url, string postData) 73             where T : class,new() 74         { 75             HttpContent httpContent = new StringContent(postData); 76             httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json"); 77             HttpClient httpClient = new HttpClient(); 78  79             T result = default(T); 80  81             HttpResponseMessage response = httpClient.PostAsync(url, httpContent).Result; 82  83             if (response.IsSuccessStatusCode) 84             { 85                 Task<string> t = response.Content.ReadAsStringAsync(); 86                 string s = t.Result; 87  88                 result = JsonConvert.DeserializeObject<T>(s); 89             } 90             return result; 91         } 92  93         /// <summary> 94         /// V3接口全部为Xml形式，故有此方法 95         /// </summary> 96         /// <typeparam name="T"></typeparam> 97         /// <param name="url"></param> 98         /// <param name="xmlString"></param> 99         /// <returns></returns>100         public static T PostXmlResponse<T>(string url, string xmlString)101             where T : class,new()102         {103             HttpContent httpContent = new StringContent(xmlString);104             httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");105             HttpClient httpClient = new HttpClient();106 107             T result = default(T);108 109             HttpResponseMessage response = httpClient.PostAsync(url, httpContent).Result;110 111             if (response.IsSuccessStatusCode)112             {113                 Task<string> t = response.Content.ReadAsStringAsync();114                 string s = t.Result;115 116                 result = XmlDeserialize<T>(s);117             }118             return result;119         }120 121         /// <summary>122         /// 反序列化Xml123         /// </summary>124         /// <typeparam name="T"></typeparam>125         /// <param name="xmlString"></param>126         /// <returns></returns>127         public static T XmlDeserialize<T>(string xmlString) 128             where T : class,new ()129         {130             try131             {132                 XmlSerializer ser = new XmlSerializer(typeof(T));133                 using (StringReader reader = new StringReader(xmlString))134                 {135                     return (T)ser.Deserialize(reader);136                 }137             }138             catch (Exception ex)139             {140                 throw new Exception("XmlDeserialize发生异常：xmlString:" + xmlString + "异常信息：" + ex.Message);141             }142 143         }144     }