spring java 获取webapp下文件路径
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2022-04-22 13:52:34
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@RequestMapping("/act/worldcup_schedule_time/imgdownload")
@ResponseBody
public String scheduleDownload(HttpServletRequest request, HttpServletResponse response, HttpSession session) {
response.setCharacterEncoding("UTF-8");
String downLoadName = "worldcup.jpg";
InputStream input = null;
try {
request.setCharacterEncoding("UTF-8");
//获取文件的路径
// String url = session.getServletContext().getRealPath("/") + "resources\\images\\act\\worldcup_merge\\worldcup720.png";
String url = session.getServletContext().getRealPath("/") + "resources/images/act/worldcup_merge/worldcup720.png";
System.out.println(url);
File file = new File(url);
input = FileUtils.openInputStream(file);
byte[] data = IOUtils.toByteArray(input);
//System.out.println("文件名:"+downLoadName);
response.reset();
//设置响应的报头信息(中文问题解决办法)
response.setHeader("content-disposition", "attachment;fileName=" + URLEncoder.encode(downLoadName, "UTF-8"));
response.addHeader("Content-Length", "" + data.length);
response.setContentType("image/png; charset=UTF-8");
IOUtils.write(data, response.getOutputStream());
} catch (Exception e) {
logger.error("下载图片出错");
if (input != null) {
IOUtils.closeQuietly(input);
}
}
return null;
}
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