使用不带套接字的Java将图像文件发送到客户端

Question

I am using file download phonegap in my client side (ipad) to download an image file from the internet. Now I need to send the image through my java server. I am sending the image as stream , but the client side needs a file. If I send the image file as stream it means it's not downloading the image file. How do I send the image file as a file without using sockets ?

My server side code is:

String file_location=request.getQueryString();
String[] splitable=file_location.split("&");
String[] document_name=splitable[0].split("=");
String[] document_page=splitable[1].split("=");

PDFDocumentManag er documentManager;
try
{
    ServletOutputStream out = response.getOutputStream();
    //String location=loadClass.fileLocation(document_name[1]);
    String location="D:/Processing/893210.pdf";
    documentManager = new PDFDocumentManager(new File(location));
    documentManager.setPageNum(Integer.parseInt(document_page[1]));
    response.setContentType("image/gif"); 
    ImageIO.write(documentManager.getImage(), "gif", new File("D:/testing/out.gif"));
}

Answer 1

我不确定我是否正确理解您的问题，但是您可能需要“内容处置”尝试

response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");