SpringMVC:学习笔记(10)——整合Ckeditor且实现图片上传

    @RequestMapping("/imageUpload.do")
    public String imageUpload(@RequestParam("upload") MultipartFile file,
                            @RequestParam("CKEditorFuncNum") String CKEditorFuncNum,
                            HttpServletResponse response,
                            HttpServletRequest request) throws IOException {
        System.out.println("有文件想要上传");
        PrintWriter out = response.getWriter();
        String name = null;
        name = new String(file.getOriginalFilename().getBytes("iso-8859-1"), "UTF-8");
        String uploadContentType = file.getContentType();
        //处理文件后缀
        String expandedName = "";
        if (uploadContentType.equals("image/pjpeg")
                || uploadContentType.equals("image/jpeg")) {
            // IE6上传jpg图片的headimageContentType是image/pjpeg，而IE9以及火狐上传的jpg图片是image/jpeg
            expandedName = ".jpg";
        } else if (uploadContentType.equals("image/png")
                || uploadContentType.equals("image/x-png")) {
            // IE6上传的png图片的headimageContentType是"image/x-png"
            expandedName = ".png";
        } else if (uploadContentType.equals("image/gif")) {
            expandedName = ".gif";
        } else if (uploadContentType.equals("image/bmp")) {
            expandedName = ".bmp";
        } else {
            //文件格式不符合，返回错误信息
            out.println("<script type=\"text/javascript\">");
            out.println("window.parent.CKEDITOR.tools.callFunction(" + CKEditorFuncNum
                    + ",‘‘," + "‘文件格式不正确（必须为.jpg/.gif/.bmp/.png文件）‘);");
            out.println("</script>");
            return null;
        }
        
        //文件命名并保存到服务器
        DateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
        name = df.format(new Date()) +expandedName;
        String DirectoryName =request.getContextPath()+"/tempImag";
        System.out.println(DirectoryName);
        try {
            File file1 = new File(request.getServletContext().getRealPath("/tempImag"),name);
            System.out.println(file1.getPath());
            file.transferTo(file1);
        } catch (Exception e) {
            e.printStackTrace();
        }

        String fileURL =request.getContextPath() + "/tempImag/"+name;

        // 返回"图像"选项卡和图像在服务器的地址并显示图片
        out.println("<script type=\"text/javascript\">");
        out.println("window.parent.CKEDITOR.tools.callFunction(" + CKEditorFuncNum + ",‘" +fileURL+"‘,‘‘)");
        out.println("</script>");
        out.close();
        return null;
    }