Question

我有一个网络服务，我想从我的代码页面后面调用，而不是从我的源代码。我谷歌的主题，但在大多数链接中我发现他们通过使用ajax帖子从源代码调用Web服务

 $.ajax({
            type: "POST",
            url: "webservice.asmx/webservice",
            data: "{}",
            contentType: "application/json; charset=utf-8",
            cache: false,
            dataType: "json",
            success: function (result) {
            }
        });

但我不想使用这种方法我只想从我的代码behing页面调用webservice。有什么帮助吗？

Answer 1

您可以使用此代码块。

public string CallWebMethod(string url, Dictionary<string, string> dicParameters)
{
    try
    {
        byte[] requestData = this.CreateHttpRequestData(dicParameters); 
        HttpWebRequest httpRequest = (HttpWebRequest)HttpWebRequest.Create(url);
        httpRequest.Method = "POST";
        httpRequest.KeepAlive = false;
        httpRequest.ContentType = "application/x-www-form-urlencoded";
        httpRequest.ContentLength = requestData.Length;
        httpRequest.Timeout = 30000;
        HttpWebResponse httpResponse = null;
        String response = String.Empty;

        httpRequest.GetRequestStream().Write(requestData, 0, requestData.Length);
        httpResponse = (HttpWebResponse)httpRequest.GetResponse();
        Stream baseStream = httpResponse.GetResponseStream();
        StreamReader responseStreamReader = new StreamReader(baseStream);
        response = responseStreamReader.ReadToEnd();
        responseStreamReader.Close();

        return response;
    }
    catch (Exception ex)
    {
        throw new Exception(ex.Message);
    }
}

private byte[] CreateHttpRequestData(Dictionary<string, string> dic)
{
    StringBuilder sbParameters = new StringBuilder();
    foreach (string param in dic.Keys)
    {
        sbParameters.Append(param);//key => parameter name
        sbParameters.Append('=');
        sbParameters.Append(dic[param]);//key value
        sbParameters.Append('&');
    }
    sbParameters.Remove(sbParameters.Length - 1, 1);

    UTF8Encoding encoding = new UTF8Encoding();

    return encoding.GetBytes(sbParameters.ToString());

}

Answer 2

您需要将Web Reference添加到项目中。

以下是有关如何使用网络服务的分步指南：

C#.Net How To: Consume a Web Service in C#.Net Visual Studio 2010

如何从代码后面调用webservice

2 个答案: