iFrame在localhost中显示PDF，但不在网页中显示 [英] iFrame displays PDF in localhost but NOT in webpage

问题描述

我之前尝试过这个问题，但没有得到任何真正的答案，所以也许我没有正确解释。让我这样试试吧。我的程序搜索在线存储在Web文件夹中的（PDF）文档。然后它应该在网页上的iFrame中显示它。我尝试了这两种方式，既可以作为HTML5网页iFrame，也可以作为谷歌文档。 Google Docs的代码如下所示，但两者都产生相同的结果，即空白页（没有错误），但两个完美运行的工作作为Visual Studio 10中的localHost页运行：

I tried this question earlier but did not get any real answers, so perhaps I am not explaining it correctly. Let me try it this way. My program searches for a (PDF) document that is stored in a web folder online. It is then supposed to display it in an iFrame on a web-page. I have tried this two ways, both as an HTML5 web-page iFrame and also as a google docs. Code for Google Docs is shown below, but both produce the same result which is a blank page (no errors) but BOTH work perfectly run run as a localHost page from Visual Studio 10:

//Page 1
//Create a new SQL Connection Object
        SqlConnection Conn = new SqlConnection(CONNSTR);

        try
        {
            string Sql = "SELECT [NAME],[LOCATION] FROM TTW_MISC WHERE [NAME] = @NAME ORDER BY [NAME] ASC ";

            //Set Command Object Headers
            SqlCommand Comm = new SqlCommand(Sql, Conn);
            //For an Sql Command
            Comm.CommandType = CommandType.Text;
            //For a Stored Procedure
            //Comm.CommandType = CommandType.StoredProcedure;

            //Comm Paramemters
            Comm.Parameters.Clear();
            Comm.Parameters.AddWithValue("@NAME", "TTW_Story.pdf");

            //Create a Dataset
            SqlDataAdapter da = new SqlDataAdapter(Comm);
            DataSet ds = new DataSet();
            da.Fill(ds);

            location3 = ds.Tables[0].Rows[0]["LOCATION"].ToString();
            CEO1 = ds.Tables[0].Rows[0]["NAME"].ToString();
        }
        catch (Exception ex)  //Catch Errors
        {
            Console.WriteLine("Error : " + ex.Message);
        }

        Session["Document"] = location3 + CEO1;
        Response.Redirect("TTW_Doc_Reader.aspx", false);

//Page 2 (iFrame)
        //Using iFrame with Google Docs
        if (Session["Document"].ToString() != string.Empty)
        {
            string document = Session["Document"].ToString();
            string pdfPage = "http://docs.google.com/gview?url=" + document + "&embedded=true";
            pdiFrame.Attributes.Add("src", pdfPage);
        }
        else
        {
            ClientScriptManager script = Page.ClientScript;
            if (!script.IsClientScriptBlockRegistered(this.GetType(), "Alert"))
            {
                script.RegisterClientScriptBlock(this.GetType(), "Alert", "alert('Sorry, this document cannot be found. ')", true);
                return;
            }
        }

因为它在VS 10中运行时效果很好，我假设那个由于它是同一页面，因此它正在在线正确传递，并且加载页面源中的检查似乎验证了，但我得到的只是一个空白页面。所有我能想到的是某种安全问题，不是让页面从服务器上下来，但我不知道如何检查这一点，或者即使我走在正确的轨道上。为什么它可以在桌面上运行？我现在已经超过一周了。多年来，我从Code Project获得了很多帮助，并且始终解决了这个问题。我提前感谢您的帮助！请帮助。再次感谢，Pat。



我尝试过：



我已尝试过Google文档和HTML 5 iFrame直接代码。我已经验证了源文档并且它已存在。我检查了代码的准确性，它在Visual Studio 10中运行时完全解析。我检查了网页源，以确保它正在寻找一个真实的页面，并且页面格式代码是正确的（它必须是因为它从localhost运行时，以两种格式都可以找到并完美显示。我尝试了3种不同的浏览器（Firefox，Chrome，Explorer）。我通过搜索任何类似的问题摧毁了互联网，我发现没有任何东西与我的问题相符，考虑到我从VS locahost完成后已经有效。

Since it works perfectly when it is run in VS 10, I "ASSUME" that the it is being passed correctly online since it is the same page, and a check in the loaded page source appears to verify that, but all I get is a blank page. All I can think of is some kind of security issue that is not letting the page come down from the server, but I do not know how to check this, or even if I am on the right track. Why does it work from the desktop? I'm more than a week on this now. I have received great assistance from Code Project over the years and have always resolved the problem. I thank you in advance for your assistance! PLEASE PLEASE HELP. Thanks again, Pat.

What I have tried:

I have tried both Google docs and HTML 5 iFrame direct code. I have verified the source document and it's existence. I have checked the code for accuracy and it resolves perfectly when run in Visual Studio 10. I have checked the web page source to make sure it is looking for a real page and that the page format code is correct (which it must be since it is found and displayed perfectly in both formats when run from the localhost). I have tried 3 different browsers (Firefox, Chrome, Explorer). I have decimated the internet with searches for any similar issue and I have found nothing that matches my issue, considering mine already works when done from the VS locahost.

推荐答案

iFrames不可靠，据我所知，谷歌不允许在其中呈现页面。



我的建议是使用某种其他控件或模态。通过jQuery Ajax或其他东西获取数据。

The iFrames are not reliable and Google doesn't allow it's pages to be rendered in them as far as I know.

My suggestion would be to use some kind of other control or modal. Get the data through jQuery Ajax or something.

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