HttpHelper代码（C#）

来源：互联网发布：琅琊榜捏脸数据编辑：程序博客网时间：2024/05/29 08:34
public static class HttpHelper    {        /// <summary>          /// 获取文件集合对应的ByteArrayContent集合          /// </summary>          /// <param name="files"></param>          /// <returns></returns>          private static List<ByteArrayContent> GetFileByteArrayContent(HashSet<string> files)        {            List<ByteArrayContent> list = new List<ByteArrayContent>();            foreach (var file in files)            {                var fileContent = new ByteArrayContent(File.ReadAllBytes(file));                fileContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")                {                    FileName = Path.GetFileName(file)                };                list.Add(fileContent);            }            return list;        }        /// <summary>          /// 获取键值集合对应的ByteArrayContent集合          /// </summary>          /// <param name="collection"></param>          /// <returns></returns>          private static List<ByteArrayContent> GetFormDataByteArrayContent(NameValueCollection collection)        {            List<ByteArrayContent> list = new List<ByteArrayContent>();            foreach (var key in collection.AllKeys)            {                var dataContent = new ByteArrayContent(Encoding.UTF8.GetBytes(collection[key]));                dataContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")                {                    Name = key                };                list.Add(dataContent);            }            return list;        }        public static string PostFormData(string url, NameValueCollection collection)        {                      using (HttpClient client = new HttpClient())            {                string result_info = "";                client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("text/json"));//设定要响应的数据格式                  using (var content = new MultipartFormDataContent())//表明是通过multipart/form-data的方式上传数据                  {                    var formDatas = GetFormDataByteArrayContent(collection);//获取键值集合对应的ByteArrayContent集合                                         Action<List<ByteArrayContent>> act = (dataContents) =>                    {                        //声明一个委托，该委托的作用就是将ByteArrayContent集合加入到MultipartFormDataContent中                          foreach (var byteArrayContent in dataContents)                        {                            content.Add(byteArrayContent);                        }                    };                    act(formDatas);//执行act                      try                    {                        var result = client.PostAsync(url, content).Result;//post请求                          //确保HTTP成功状态值                        result.EnsureSuccessStatusCode();                        result_info = result.Content.ReadAsStringAsync().Result;//将响应结果显示在文本框内                      }                    catch(Exception ex)                    {                        Common.WriteTextLog("http响应错误", ex.ToString(), DateTime.Now);                    }                }                return result_info;            }          }        public static string PostFormFile(string url, HashSet<string> files_hash)        {            using (HttpClient client = new HttpClient())            {                string result_info = "";                client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("text/json"));//设定要响应的数据格式                  using (var content = new MultipartFormDataContent())//表明是通过multipart/form-data的方式上传数据                  {                    var files = GetFileByteArrayContent(files_hash);//获取文件集合对应的ByteArrayContent集合                      Action<List<ByteArrayContent>> act = (dataContents) =>                    {//声明一个委托，该委托的作用就是将ByteArrayContent集合加入到MultipartFormDataContent中                          foreach (var byteArrayContent in dataContents)                        {                            content.Add(byteArrayContent);                        }                    };                    act(files);//执行act                      try                    {                        var result = client.PostAsync(url, content).Result;//post请求                          //确保HTTP成功状态值                        result.EnsureSuccessStatusCode();                        result_info = result.Content.ReadAsStringAsync().Result;//将响应结果显示在文本框内                      }                    catch (Exception ex)                    {                        Common.WriteTextLog("http响应错误", ex.ToString(), DateTime.Now);                    }                 }                return result_info;            }        }        public static string PostFormUrl(string url, Dictionary<string, string> key_value_set)        {            using (var client = new HttpClient())            {                string result_info = "";                //使用FormUrlEncodedContent做HttpContent                var content = new FormUrlEncodedContent(key_value_set);                try                {                    var result = client.PostAsync(url, content).Result;//post请求                      //确保HTTP成功状态值                    result.EnsureSuccessStatusCode();                    result_info = result.Content.ReadAsStringAsync().Result;//将响应结果显示在文本框内                  }                catch (Exception ex)                {                    Common.WriteTextLog("http响应错误", ex.ToString(), DateTime.Now);                }                return result_info;            }        }            }
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