HttpWebRequest POST请求webapi:如果参数是简单类型,比如字符串(注意,拼接的字符串要HttpUtility.UrlEncode才行,否则服务端会丢失特殊字符&后面的数据)
要点:如下代码统一设置为:ContentType = "application/x-www-form-urlencoded";
服务端代码1:URL格式为 POSTapi/Values
public string Post([FromBody] string value)
则客户端Post的数据:拼接的字符串必须以 =开头,否则服务端无法取得value。例如:=rfwreewr2332322232 或者 {'':value}
服务端代码2:URL格式为 POST api/Values?value={value}
public string Post(string value)
则客户端Post的数据:需要url里拼接出KeyValue这样的数据
服务端代码3:URL格式为 POST api/Values
public string Post()
则客户端Post的数据:无要求。例如:key=rfwreewr2332322232。
服务端:可以用HttpContext.Current.Request.InputStream或者HttpContext.Current.Request.Form[0]都可以获取
如果post的参数类型比较复杂,则需要自定义类
要点:如下代码统一设置为:ContentType = "application/json";
服务端代码1:URL格式为 POST api/Values
public string Post([FromBody] Model value)或者 public string Post(Model value)
则客户端Post的数据:{\"id\":\"test1\",\"name\":\"value\"}。服务端会自动映射到对象。
提交代码如下:
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HttpWebRequest wReq = (HttpWebRequest)WebRequest.Create( "http://localhost:37831/api/Values" );
wReq.Method = "Post" ;
//wReq.ContentType = "application/json";
//wReq.ContentType = "application/x-www-form-urlencoded";
wReq.ContentType = "application/json" ;
//byte[] data = Encoding.Default.GetBytes(HttpUtility.UrlEncode("key=rfwreewr2332322232&261=3&261=4"));
byte [] data = Encoding.Default.GetBytes( "{\"id\":\"test1\",\"name\":\"value\"}" );
wReq.ContentLength = data.Length;
Stream reqStream = wReq.GetRequestStream();
reqStream.Write(data, 0, data.Length);
reqStream.Close();
using (StreamReader sr = new StreamReader(wReq.GetResponse().GetResponseStream()))
{
string result = sr.ReadToEnd();
}
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服务段代码如下:
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// POST api/values
//public string Post()
//{
// FileInfo fi = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + "log.txt");
// StreamWriter sw = fi.CreateText();
// StreamReader sr = new StreamReader(HttpContext.Current.Request.InputStream);
// sw.WriteLine("1:" + sr.ReadToEnd()+"--"+ HttpContext.Current.Request.Form[0]);
// sw.Flush();
// sw.Close();
// return "{\"test\":\"1\"}";
//}
// POST api/values
public HttpResponseMessage PostStudent(Student student)
{
FileInfo fi = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + "log.txt" );
StreamWriter sw = fi.AppendText();
sw.WriteLine( "2:" + student.id);
sw.Flush();
sw.Close();
HttpResponseMessage result = new HttpResponseMessage { Content = new StringContent( "{\"test\":\"2\"}" , Encoding.GetEncoding( "UTF-8" ), "application/json" ) };
return result;
}
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