Question

我想从URL读取Json字符串，但是当我使用Chrome网页时会显示此字符串：

当我使用C＃WebBrowser时，它会让我下载文件来阅读我尝试使用WebClient DownloadString，但是这个站点使用来自登录页面的cookie，它显示了arlert＆＃34; Request Invaild＆＃34;：

请帮助我，如果我的英语不好，我很抱歉

更新：这是我的代码：

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.17.1/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.17.1/locale/pt.js"></script>

更新2：我尝试获取/设置Cookie，但它无效。

wbTest.Navigate("http://authen.dzogame.com:8080/LauncherLogin.aspx?gid=200");
wbTest.Document.GetElementById("tbxUserName").SetAttribute("value", "7honda");
wbTest.Document.GetElementById("tbxPassword").SetAttribute("value", "111111");
wbTest.Document.GetElementById("btnLogin").InvokeMember("click");

Answer 1

看看这个开源JSON框架：http://www.newtonsoft.com/json

// Removes default background.
mPopupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
myPopupWindow.setOutsideTouchable(true);

Answer 2

您尝试使用浏览器控件中的Cookie发送查询，但属性Cookie不包含httpOnly cookie =＆gt;所以你没有会话cookie。

获取httpOnly有点不稳定。

将此代码添加到您的班级，以便获取httpOnly cookie。

[DllImport("wininet.dll", SetLastError = true)]
public static extern bool InternetGetCookieEx(
string url,
string cookieName,
StringBuilder cookieData,
ref int size,
Int32 dwFlags,
IntPtr lpReserved);

private const Int32 InternetCookieHttponly = 0x2000;

/// <summary>
/// Gets the URI cookie container.
/// </summary>
/// <param name="uri">The URI.</param>
/// <returns></returns>
public static string GetUriCookieContainer(Uri uri)
{
    // Determine the size of the cookie
    int datasize = 8192 * 16;
    StringBuilder cookieData = new StringBuilder(datasize);
    if (!InternetGetCookieEx(uri.ToString(), null, cookieData, ref datasize, InternetCookieHttponly, IntPtr.Zero))
    {
        if (datasize < 0)
            return null;
        // Allocate stringbuilder large enough to hold the cookie
        cookieData = new StringBuilder(datasize);
        if (!InternetGetCookieEx(
            uri.ToString(),
            null, cookieData,
            ref datasize,
            InternetCookieHttponly,
            IntPtr.Zero))
            return null;
    }
    return cookieData.ToString();
}

您可以使用以下代码获取json

private void func()
{
    // your code for login here ....




    var urlJson = new Uri("http://authen.dzogame.com:8080/LauncherLogin.aspx?gid=200");

    var cookie = GetUriCookieContainer(urlJson);

    HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create("http://authen.dzogame.com:8080/ReturnLogin.ashx");
    request.Headers.Add(HttpRequestHeader.Cookie, cookie);
    request.Accept = "*/*";
    string jsonResponse = null;
    using (WebResponse response = request.GetResponse())
    {
        using (StreamReader streamReader = new StreamReader(response.GetResponseStream()))
        {
            jsonResponse = streamReader.ReadToEnd();
        }
    }
}

从url读取Json而不下载

2 个答案: