点击“另存为”后获取流式pdf的默认名称

Question

我有一个问题，我不确切知道如何解决，我希望这会解释它你需要理解的好：

我有一个在Internet Explorer 11上预览的流式pdf文件，当我点击“另存为”时，要下载的文件的默认名称是此pdf流式传输的页面名称，我关注的是我的方式可以找到一种在响应时设置此页面名称的方法，这样这个pdf插件就会抓住并将其放在对话框中

感谢

Answer 1

在你的HttpResponse中，你需要像这样设置Content-Disposition标题：

Content-Disposition: inline; filename="myfile.txt"

除了让默认的PDF查看器识别出文件类型外，您还需要将Content-Type响应标头设置为：application / pdf like：

Content-Type: application/pdf

这是一个正确执行此操作的示例servlet：

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class FileServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
  protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    process(request, response);
  }

  protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException,
      IOException {
    process(request, response);
  }

  private void process(HttpServletRequest request, HttpServletResponse response) throws ServletException,
      IOException {

    String pdfFileName = "pdftest.pdf";
    String contextPath = getServletContext().getRealPath(File.separator);
    File pdfFile = new File(contextPath + pdfFileName);

    response.setContentType("application/pdf");
    response.addHeader("Content-Disposition", "attachment; filename=" + pdfFileName);
    response.setContentLength((int) pdfFile.length());

    FileInputStream fileInputStream = new FileInputStream(pdfFile);
    OutputStream responseOutputStream = response.getOutputStream();
    int bytes;
    while ((bytes = fileInputStream.read()) != -1) {
      responseOutputStream.write(bytes);
    }
  }
}