/// <summary>
///
/// desc：HttpRequest工具类
/// auth：
/// date：2022/9/21 9:41:05
///
/// </summary>
public static class HttpRequestTools
{
/// <summary>
/// HTTP表单（Form）提交数据（含上传文件）
/// </summary>
/// <param name="url"></param>
/// <param name="postData"></param>
/// <param name="files"></param>
/// <param name="timeOut"></param>
/// <param name="headers"></param>
/// <returns></returns>
public static string HttpPostForm(string url, Dictionary<string, string> postData = null, Dictionary<string, byte[]> files = null, int timeOut = 120, Dictionary<string, string> headers = null)
{
// HTTP请求 会携带很多头部数据，以及body数据。头部数据量小，body数据量大，附件这种一般都是放body里。
// 以字节流的形式放在stream里，随着请求一起发出去！！（理解不一定对，但大致应该是这样的），你给别人发消息
postData = postData ?? null;
ServicePointManager.DefaultConnectionLimit = 512;
var request = WebRequest.Create(url) as HttpWebRequest;
string boundary = "----WebKitFormBoundary" + DateTime.Now.Ticks.ToString("x");
byte[] boundarybytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");
byte[] endbytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");
request.ContentType = "multipart/form-data;boundary=" + boundary;
request.Timeout = timeOut * 1000;
if (headers != null)
{
foreach (var header in headers)
request.Headers.Add(header.Key, header.Value);
}
request.Method = "POST";
string postdata = JHNIS.JHNISCommonLib.CommonHelper.SerializeConverter.SerializeObjectToJson(postData);
byte[] data = Encoding.UTF8.GetBytes(postdata);
using (Stream stream = request.GetRequestStream())
{
//stream.Write(data, 0, data.Length);
//1.1 key/value
string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";
foreach (var item in postData)
{
stream.Write(boundarybytes, 0, boundarybytes.Length);
string formitem = string.Format(formdataTemplate, item.Key, item.Value);
byte[] formitembytes = Encoding.UTF8.GetBytes(formitem);
stream.Write(formitembytes, 0, formitembytes.Length);
}
//1.2 file
if (files != null)
{
// 有附件则上传
foreach (var file in files)
{
stream.Write(boundarybytes, 0, boundarybytes.Length);
string temp = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet\r\n\r\n";
string header = string.Format(temp, "file", file.Key);
byte[] fileName = Encoding.UTF8.GetBytes(header);
stream.Write(fileName, 0, fileName.Length);
stream.Write(file.Value, 0, file.Value.Length);
}
}
//1.3 form end
stream.Write(endbytes, 0, endbytes.Length);
}
// HTTP响应，也就是你给别人发的消息，别人看到了，给你回消息
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (var httpStreamReader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
{
return httpStreamReader.ReadToEnd();
}
}
/// <summary>
/// 指定Post地址获取全部字符串
/// </summary>
/// <param name="url">请求后台地址</param>
/// <param name="dic">请求数据集合</param>
/// <returns></returns>
public static string HttpPost(string url, Dictionary<string, string> dic)
{
string result = string.Empty;
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "POST";
req.ContentType = "application/json";
req.UserAgent = "Apifox/1.0.0 (https://www.apifox.cn)";
#region 添加Post 参数
StringBuilder builder = new StringBuilder();
int i = 0;
foreach (var item in dic)
{
if (i > 0)
builder.Append("&");
builder.AppendFormat("{0}={1}", item.Key, item.Value);
i++;
}
byte[] data = Encoding.UTF8.GetBytes(builder.ToString());
req.ContentLength = data.Length;
using (Stream reqStream = req.GetRequestStream())
{
reqStream.Write(data, 0, data.Length);
reqStream.Close();
}
#endregion
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
Stream stream = resp.GetResponseStream();
//获取响应内容
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
result = reader.ReadToEnd();
}
return result;
}
/// <summary>
/// 指定Post地址获取全部字符串
/// </summary>
/// <param name="url">请求后台地址</param>
/// <param name="dic">请求数据集合</param>
/// <returns></returns>
public static string HttpPostBody(string url, string body)
{
string result = string.Empty;
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "POST";
req.ContentType = "application/json";
req.UserAgent = "Apifox/1.0.0 (https://www.apifox.cn)";
#region 添加Post 参数
StringBuilder builder = new StringBuilder();
int i = 0;
byte[] data = Encoding.UTF8.GetBytes(body);
req.ContentLength = data.Length;
using (Stream reqStream = req.GetRequestStream())
{
reqStream.Write(data, 0, data.Length);
reqStream.Close();
}
#endregion
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
Stream stream = resp.GetResponseStream();
//获取响应内容
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
result = reader.ReadToEnd();
}
return result;
}
/// <summary>
/// 使用Get 方式获取全部字符串
/// </summary>
/// <param name="url">请求后台地址</param>
/// <param name="dic">请求数据集合</param>
/// <returns></returns>
public static string HttpGet(string url, Dictionary<string, string> dic)
{
string result = string.Empty;
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "GET";
req.ContentType = "application/json";
#region 添加Post 参数
StringBuilder builder = new StringBuilder();
int i = 0;
foreach (var item in dic)
{
if (i > 0)
builder.Append("&");
builder.AppendFormat("{0}={1}", item.Key, item.Value);
i++;
}
byte[] data = Encoding.UTF8.GetBytes(builder.ToString());
req.ContentLength = data.Length;
using (Stream reqStream = req.GetRequestStream())
{
reqStream.Write(data, 0, data.Length);
reqStream.Close();
}
#endregion
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
Stream stream = resp.GetResponseStream();
//获取响应内容
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
result = reader.ReadToEnd();
}
return result;
}
/// <summary>
/// 使用Get 方式获取全部字符串
/// </summary>
/// <param name="url">请求后台地址</param>
/// <param name="dic">请求数据集合</param>
/// <returns></returns>
public static byte[] HttpGetFile(string url)
{
try
{
WebClient cl = new WebClient();
var data = cl.DownloadData(url);
return data;
}
catch(Exception ex)
{
Log.SaveExceptionLog("下载失败：" + url, ex);
return null;
}
} 0
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c#的WEBAPI请求HttpRequest工具类，含上传文件
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