Question

我将文档文件/ pdf文件或txt文件保存在数据库中。现在要获取该文件我正在使用下面的代码。

JobApplicantResume oApplicantResumne = new JobApplicantResume();
DataSet dsApplicantResume = oApplicantResumne.GetJobApplicantResumeByJobApplicantResumeId(1552);//1552 Long value
Response.ClearContent();
Response.ClearHeaders();
Response.Clear();
Response.Buffer = true;
Response.Charset = "";
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.ContentType = "application/xx-xxxx";
Response.AddHeader("Content-Disposition", "attachment;filename=" + dsApplicantResume.Tables[0].Rows[0]["sFileName"].ToString());
//Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
Byte[] bytes = (Byte[])dsApplicantResume.Tables[0].Rows[0]["binFile"];
Response.BinaryWrite(bytes);
Response.Flush();
Response.End();

它提供了确切的文件。打开文件没问题。

在其他一些页面中，我使用了相同的代码：

JobApplicantResume oApplicantResumne = new JobApplicantResume();
DataSet dsApplicantResume = oApplicantResumne.GetJobApplicantResumeByJobApplicantResumeId(1552);//1552 Long value
Response.ClearContent();
Response.ClearHeaders();
Response.Clear();
Response.Buffer = true;
Response.Charset = "";
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.ContentType = "application/xx-xxxx";
Response.AddHeader("Content-Disposition", "attachment;filename=" + dsApplicantResume.Tables[0].Rows[0]["sFileName"].ToString());
//Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
Byte[] bytes = (Byte[])dsApplicantResume.Tables[0].Rows[0]["binFile"];
Response.BinaryWrite(bytes);
Response.Flush();
Response.End();

它还提供了一个要下载的文件。但是当我打开它时，数据会以不同的格式出现。

像：

؟½ï؟½ï؟½ï؟½ï؟½ï؟

垃圾数据。我无法理解问题的原因。如果任何人遇到这种类似的问题或任何建议/帮助将非常有助于克服这个问题。

非常感谢您的关注。

Answer 1

尝试添加Unicode Byte-Order-Mark full example。

    //add the BOM
    byte[] bBOM = new byte[] { 0xEF, 0xBB, 0xBF };
    byte[] bContent = ms.ToArray();
    byte[] bToWrite = new byte[bBOM.Length + bContent.Length];

    //combile the BOM and the content
    bBOM.CopyTo( bToWrite, 0 );
    bContent.CopyTo( bToWrite, bBOM.Length );

    //write to the client
    HttpContext.Current.Response.Write( Encoding.UTF8.GetString( bToWrite ) );
    HttpContext.Current.Response.Flush();
    HttpContext.Current.Response.End();

文件下载奇怪的问题

1 个答案: