C#微信开发之旅（二）：基础类之HttpClientHelper

  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Xml
123         /// </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             try
131             {
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     }