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我正在使用以下代码从我的网络服务器检索 json 字符串:

var webClient = new WebClient();

webClient.OpenReadCompleted += OnOpenReadCompleted;

webClient.OpenReadAsync(new Uri("https://myurl.com/request.cgi?user=" + user + "&pass=" + pass + "&junk=" + DateTime.Now, UriKind.Absolute));

...

private void OnOpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
{
// response processed here
}

我打算加密使用的变量,但希望能够将变量发布到服务器而不是将它们包含在查询字符串中。我将如何实现这一目标?

谢谢 - 斯图

编辑:已将代码更改为以下内容:

var webClient = new WebClient();

                    webClient.UploadStringCompleted += OnOpenReadCompleted;
                    webClient.Headers["Content-Type"] = "application/x-www-form-urlencoded";
                    webClient.Encoding = Encoding.UTF8;


                  webClient.UploadStringAsync(new Uri("https://myurl.com/request.cgi"), "POST", "user=" + user + "&pass=" + pass + "&junk=" + DateTime.Now, UriKind.Absolute); 

...

private void OnOpenReadCompleted(object sender, UploadStringCompletedEventArgs e)
    {
    // response processed here
    }

作为响应处理的一部分,我检查隔离存储以获取已保存的文件,如果存在则将其删除并将新响应保存到文件中。

但是,由于现在更改上面的代码不会让我删除现有文件:

private void OnOpenReadCompleted(object sender, UploadStringCompletedEventArgs e)
    {
        StreamReader reader = new StreamReader(e.Result);
        string myresult = reader.ReadToEnd();
        reader.Close();
        reader.Dispose();
        IsolatedStorageFile store = IsolatedStorageFile.GetUserStoreForApplication();
                if (store.FileExists("json.txt")) 
                    { 
                       store.DeleteFile("json.txt");   // this errors with System.MethodAccessException was unhandled
        //  Message=Attempt to access the method failed: System.IO.StreamReader..ctor(System.String)
                    }
         ...
     } 

不明白为什么代码更改会影响这一点?

编辑:

通过更改固定:

StreamReader reader = new StreamReader(e.Result);
string myresult = reader.ReadToEnd();
reader.Close();
reader.Dispose();

string myresult = (string)e.Result;
4

1 回答 1

1

使用上传字符串发布数据: webClient.UploadStringAsync(uri, "POST", body); 你只需要配置你的服务器希望看到的“正文”数据。

于 2012-06-29T08:54:38.730 回答