问题描述

图片上传返回JSON数据，前台弹出下载保存文件框， 文件里面是JSON数据，页面上没显示图片怎么解决 10C

@RequestMapping(value = ""kinduploadfile"" method = RequestMethod.POST)
public @ResponseBody
JSONObject KindUploadFile(HttpServletRequest requestHttpServletResponse response)
throws FileUploadException {
response.setContentType(""text/html;charset=UTF-8"");
JSONObject obj = new JSONObject();
Calendar cal = Calendar.getInstance();
int year = cal.get(Calendar.YEAR);
int month = (cal.get(Calendar.MONTH)) + 1;
int day = cal.get(Calendar.DAY_OF_MONTH);
Map map = new HashMap();
String rootPath = ""/upload/"";
rootPath += year + ""/"" + month + ""/"" + day + ""/"";
String realRootPath = request.getServletContext().getRealPath(rootPath);
java.io.File f = new File(realRootPath);
if (f.exists() == false) {
f.mkdirs();
}
SimpleDateFormat sdf = new SimpleDateFormat(""yyyyMMddHHmmss"");
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
CommonsMultipartFile file = (CommonsMultipartFile) multipartRequest
.getFile(""imgFile"");// 这里是表单的名字，在swfupload.js中this.ensureDefault(""file_post_name""
// ""filedata"");
try {

        InputStream stream = file.getInputStream();        String oldfileName = file.getOriginalFilename();        String type = oldfileName.split(""."")[1];// 获取文件类型        oldfileName = new String(oldfileName.getBytes()utf-8"");        String filename = rootPath + sdf.format(new Date())                + (int) ((Math.random() + 1) * 100000) + ""."" + type;        OutputStream bos = new FileOutputStream(request.getServletContext()                .getRealPath(filename));        int bytesRead = 0;        byte[] buffer = new byte[8192];        while ((bytesRead = stream.read(buffer 0 8192)) != -1) {            bos.write(buffer 0 bytesRead);        }        bos.close();        // close the stream        stream.close();        obj.put(""url"" filename);        obj.put(""error""0);    } catch (Exception e) {        obj.put(""error""1"");        obj.put(""message"" e.getMessage());    }    // 上传操作    return obj;}

解决方案

http://www.zhangxinxu.com/wordpress/2011/09/%E5%9F%BA%E4%BA%8Ehtml5%E7%9A%84%E5%8F%AF%E9%A2%84%E8%A7%88%E5%A4%9A%E5%9B%BE%E7%89%87ajax%E4%B8%8A%E4%BC%A0/
http://www.wzsky.net/html/article/php/php2/125287.html

解决方案二：
如何解决“文件上传返回JSON数据，在IE下提示下载文件”的问题？