C#发送Get、Post请求(带参数) C#发送Get、Post请求(带参数)

Get请求
Post请求

【C#发送Get、Post请求(带参数)】
Get请求 1.简单发送Get请求

/// /// 指定Url地址使用Get 方式获取全部字符串/// /// 请求链接地址/// public static string Get(string url){string result = ""; HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url); HttpWebResponse resp = (HttpWebResponse)req.GetResponse(); Stream stream = resp.GetResponseStream(); try{//获取内容using (StreamReader reader = new StreamReader(stream)){result = reader.ReadToEnd(); }}finally{stream.Close(); }return result; }

2.带请求参数的Get方法

/// /// 发送Get请求/// /// 地址/// 请求参数定义/// public static string Get(string url, Dictionary dic){string result = ""; StringBuilder builder = new StringBuilder(); builder.Append(url); if (dic.Count > 0){builder.Append("?"); int i = 0; foreach (var item in dic){if (i > 0)builder.Append("&"); builder.AppendFormat("{0}={1}", item.Key, item.Value); i++; }}HttpWebRequest req = (HttpWebRequest)WebRequest.Create(builder.ToString()); //添加参数HttpWebResponse resp = (HttpWebResponse)req.GetResponse(); Stream stream = resp.GetResponseStream(); try{//获取内容using (StreamReader reader = new StreamReader(stream)){result = reader.ReadToEnd(); }}finally{stream.Close(); }return result; }

3.自定义指定Http请求头，自定义指定编码解析返回结果

HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url); req.Method = "GET"; req.Headers["Accept-Language"] = "zh-CN,zh; q=0.8"; req.Referer = "https://www.baidu.com/"; HttpWebResponse resp = (HttpWebResponse)req.GetResponse(); Stream stream = resp.GetResponseStream(); string result = ""; //注意，此处使用的编码是：gb2312//using (StreamReader reader = new StreamReader(stream, Encoding.Default))using (StreamReader reader = new StreamReader(stream, Encoding.GetEncoding("gb2312"))){result = reader.ReadToEnd(); }

Post请求此处内容传输都是用UTF-8编码
1.不带参数发送Post请求

/// /// 指定Post地址使用Get 方式获取全部字符串/// /// 请求后台地址/// public static string Post(string url){string result = ""; HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url); req.Method = "POST"; HttpWebResponse resp = (HttpWebResponse)req.GetResponse(); Stream stream = resp.GetResponseStream(); //获取内容using (StreamReader reader = new StreamReader(stream, Encoding.UTF8)){result = reader.ReadToEnd(); }return result; }

2.带参数Post请求,指定键值对

/// /// 指定Post地址使用Get 方式获取全部字符串/// /// 请求后台地址/// public static string Post(string url,Dictionary dic){string result = ""; HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url); req.Method = "POST"; req.ContentType = "application/x-www-form-urlencoded"; #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 = https://www.it610.com/article/Encoding.UTF8.GetBytes(builder.ToString()); req.ContentLength = data.Length; using (Stream reqStream = req.GetRequestStream()){reqStream.Write(data, 0, data.Length); reqStream.Close(); }#endregionHttpWebResponse 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; }

3.带参数的Post请求，指定发送字符串内容

/// /// 指定Post地址使用Get 方式获取全部字符串/// /// 请求后台地址/// Post提交数据内容(utf-8编码的)/// public static string Post(string url, string content){string result = ""; HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url); req.Method = "POST"; req.ContentType = "application/x-www-form-urlencoded"; #region 添加Post 参数byte[] data = https://www.it610.com/article/Encoding.UTF8.GetBytes(content); 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; }

转载方法：

HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create("http://fanyi.baidu.com/transcontent"); Encoding encoding = Encoding.UTF8; string param = "ie=utf-8&source=txt&query=hello&t=1327829764203&token=8a7dcbacb3ed72cad9f3fb079809a127&from=auto&to=auto"; //encoding.GetBytes(postData); byte[] bs = Encoding.ASCII.GetBytes(param); string responseData = https://www.it610.com/article/String.Empty; req.Method ="POST"; req.ContentType = "application/x-www-form-urlencoded"; req.ContentLength = bs.Length; using (Stream reqStream = req.GetRequestStream()){reqStream.Write(bs, 0, bs.Length); reqStream.Close(); }using (HttpWebResponse response = (HttpWebResponse)req.GetResponse()){using (StreamReader reader = new StreamReader(response.GetResponseStream(),encoding)){responseData = https://www.it610.com/article/reader.ReadToEnd().ToString(); }context.Response.Write(responseData); }

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