.net 调用java rest ful api 实例

注意post的参数组合

HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
request.Method = "POST";
request.KeepAlive = true;
request.AllowAutoRedirect = false;
request.ContentType = "application/x-www-form-urlencoded";
byte[] postdatabtyes = Encoding.UTF8.GetBytes("param={"imsi":"460023887603775","session":"hwJPCFmgNRtyOED91iTwpteCY"}");
request.ContentLength = postdatabtyes.Length;
Stream requeststream = request.GetRequestStream();
requeststream.Write(postdatabtyes, 0, postdatabtyes.Length);
requeststream.Close();
string resp;
try{
   using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
   {
      StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
      resp = sr.ReadToEnd();
    }
   }

另外一种：

2、以Post方式获取

　　using System.Web;

　　Uri address = new Uri("http://api.search.yahoo.com/ContentAnalysisService/V1/termExtraction");

　　// Create the web request
　　HttpWebRequest request = WebRequest.Create(address) as HttpWebRequest;

　　// Set type to POST
　　request.Method = "POST";
　　request.ContentType = "application/x-www-form-urlencoded";

　　// Create the data we want to send
　　string appId = "YahooDemo";
　　string context = "Italian sculptors and painters of the renaissance"
　　+ "favored the Virgin Mary for inspiration";
　　string query = "madonna";

　　StringBuilder data = new StringBuilder();
　　data.Append("appid=" + HttpUtility.UrlEncode(appId));
　　data.Append("&context=" + HttpUtility.UrlEncode(context));
　　data.Append("&query=" + HttpUtility.UrlEncode(query));

　　// Create a byte array of the data we want to send
　　byte[] byteData = UTF8Encoding.UTF8.GetBytes(data.ToString());

　　// Set the content length in the request headers
　　request.ContentLength = byteData.Length;

　　// Write data
　　using (Stream postStream = request.GetRequestStream())
　　{
　　postStream.Write(byteData, 0, byteData.Length);
　　}

　　// Get response
　　using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
　　{
　　// Get the response stream
　　StreamReader reader = new StreamReader(response.GetResponseStream());

　　// Console application output
　　Console.WriteLine(reader.ReadToEnd());
　　}
　　三、HTTP 验证请求

　　有些朋友在调用Restful Api时，可能要提供用户名和密码进行Http身份验证，这里我们可以通过为请求增加一个 NetworkCredentials 实例来完成.

　　// Create the web request
　　HttpWebRequest request
　　= WebRequest.Create("https://api.del.icio.us/v1/posts/recent") as HttpWebRequest;

　　// Add authentication to request
　　request.Credentials = new NetworkCredential("username", "password");

　　// Get response
　　using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
　　{
　　// Get the response stream
　　StreamReader reader = new StreamReader(response.GetResponseStream());

　　// Console application output
　　Console.WriteLine(reader.ReadToEnd());
　　}