您可能还想考虑将图像流式传输到浏览器,而不是将其编码到页面本身。
这里是通过servlet,它可以很容易地采用流式传输BLOB的内容,而不是文件输出到浏览器的流媒体文件中包含的图像的一个例子:
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
{
ServletOutputStream sos = resp.getOutputStream();
try {
final String someImageName = req.getParameter(someKey);
// encode the image path and write the resulting path to the response
File imgFile = new File(someImageName);
writeResponse(resp, sos, imgFile);
}
catch (URISyntaxException e) {
throw new ServletException(e);
}
finally {
sos.close();
}
}
private void writeResponse(HttpServletResponse resp, OutputStream out, File file)
throws URISyntaxException, FileNotFoundException, IOException
{
// Get the MIME type of the file
String mimeType = getServletContext().getMimeType(file.getAbsolutePath());
if (mimeType == null) {
log.warn("Could not get MIME type of file: " + file.getAbsolutePath());
resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
return;
}
resp.setContentType(mimeType);
resp.setContentLength((int)file.length());
writeToFile(out, file);
}
private void writeToFile(OutputStream out, File file)
throws FileNotFoundException, IOException
{
final int BUF_SIZE = 8192;
// write the contents of the file to the output stream
FileInputStream in = new FileInputStream(file);
try {
byte[] buf = new byte[BUF_SIZE];
for (int count = 0; (count = in.read(buf)) >= 0;) {
out.write(buf, 0, count);
}
}
finally {
in.close();
}
}
你可以张贴的完整代码...我需要它作为参考。 ..我也有同样的问题...但我没有任何代码将如何.. – Lucky 2013-01-15 13:33:05