如何发送一个带有body的GET请求到API Rest c#
本文关键字:请求 GET API Rest body 何发送 一个 | 更新日期: 2023-09-27 18:11:29
嗨,我正在做一个与API交互的windows窗体项目。到目前为止,我能够开发应用程序,但现在我遇到了一个无法解决的问题。我试图在GET请求中发送json正文,如下所示:
例子:
注:以获取温度传感器最近三天的平均值为例。请求
GET http://api.effilogics.com/nodes/583/parameters/30/data?resolution=day&groupby=avg
{begin: '2014-04-21T16:13:30+02:00', end: '2014-04-24T15:44:12+02:00'}
我不确定我是否正确地发送了正文(日期开始和结束),因为我收到一条消息错误,说不可能发送这种类型的冗长文本内容。我的问题是如何在GET请求中发送数据/时间体??我不能更改为POST请求。
部分代码如下:
public void Request4(String url)
{
try
{
HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(url);
myReq.Method = "GET";
myReq.ContentType = "application/json";
myReq.KeepAlive = true;
myReq.Headers.Set("Cache-Control", "no-store");
myReq.Headers.Set("Pragma", "no-cache");
myReq.Headers.Set("Authorization", token_type + " " + access_token);
datestruct dateST = new datestruct();
dateST.begin = string.Concat("'begin':",DateTime.UtcNow.ToString("s",System.Globalization.CultureInfo.InvariantCulture),"+02:00");
byte[] getBytes = Encoding.UTF8.GetBytes(dateST.begin);
myReq.ContentLength = getBytes.Length;
Stream body = myReq.GetRequestStream();
body.Write(getBytes, 0, getBytes.Length);
body.Close();
//Obtenim la resposta del servidor
WebResponse myResponse = myReq.GetResponse();
Stream rebut = myResponse.GetResponseStream();
// Pipes the stream to a higher level stream reader with the required encoding format.
StreamReader readStream = new StreamReader(rebut, Encoding.UTF8);
//richTextBox6.AppendText(readStream.ReadToEnd() + "'n");
string info = readStream.ReadToEnd();
split3 = info.Split(new char[] { '[', '{', ',', '}', ']' });
int mida = split3.Length;
Array.Resize(ref split3, mida - 2);
Array.Reverse(split3);
mida = split3.Length;
Array.Resize(ref split3, mida - 3);
Array.Reverse(split3);
foreach (string s in split3)
{
richTextBox6.AppendText(s);
richTextBox4.AppendText(s);
}
myResponse.Close();
readStream.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Errors", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
如果有人能帮助我,我将非常感激。由于
正如我在对你的问题的评论中解释的那样,通常一个GET请求没有主体,因此我怀疑API会接受它(因此你的错误消息),尝试将其编码到url中(只需确保你的json对象结构与API接受的参数相同)
尝试使用Uri之类的东西构建url。EscapeUriString:
http://api.effilogics.com/nodes/583/parameters/30/data?resolution=day&groupby=avg + Uri.EscapeUriString(JSon)
注:SOAP UI(可能有点硬核)或Fiddler 2(易于使用)是使用REST时非常好的工具。