java使用CKEditor实现图片上传功能

@Controller @RequestMapping("publicutil") public class PublicUtilController {  @RequestMapping(value = "uploadImage") private void uploadImage(HttpServletRequest request, HttpServletResponse response, HttpSession session,@RequestParam MultipartFile[] upload) {     response.setCharacterEncoding("UTF-8");  PrintWriter out=null;  try {   out = response.getWriter();  } catch (IOException e1) {   logger.error("response.getWriter()异常="+e1);   e1.printStackTrace();  }  String callback = request.getParameter("CKEditorFuncNum");     // 获得response,request  Map<String, Object> m = new HashMap<String, Object>();     if (!ServletFileUpload.isMultipartContent(request)) {   m.put("error", 1);   m.put("message", "请选择文件!");   //return m;   logger.info("请选择文件!");  }     String originalFileName=null;//上传的图片文件名  String fileExtensionName=null;//上传图片的文件扩展名  for (MultipartFile file : upload) {   if (file.getSize()> 10*1024* 1024) {    out.println("<script type=\"text/javascript\">");    out.println("window.parent.CKEDITOR.tools.callFunction(" + callback       + ",''," + "'文件大小不得大于10M');");    out.println("</script>");        }       originalFileName=file.getOriginalFilename();   logger.info("上传的图片文件名="+originalFileName);   fileExtensionName= originalFileName.substring(   originalFileName.lastIndexOf(".") ,originalFileName.length()).toLowerCase();   logger.info("图片文件扩展名="+fileExtensionName);       String[] imageExtensionNameArray= WebsiteConstant.IMAGE_EXTENSION_NAME_ARRAY;       String allImageExtensionName="";   boolean isContain=false;//默认不包含上传图片文件扩展名   for(int i=0;i<imageExtensionNameArray.length;i++){    if(fileExtensionName.equals(imageExtensionNameArray[i])){     isContain=true;    }     if(i==0){     allImageExtensionName+=imageExtensionNameArray[i];    }else{     allImageExtensionName+=" , "+imageExtensionNameArray[i];    }        }       String newFileName=java.util.UUID.randomUUID().toString()+fileExtensionName;   String uploadPath =WebsiteConstant.PIC_APP_FILE_SYSTEM_CKEDITOR_LOCATION;   if(isContain){//包含      File pathFile = new File(uploadPath);    if (!pathFile.exists()) { // 如果路径不存在，创建     pathFile.mkdirs();    }    try {     FileUtils.copyInputStreamToFile(file.getInputStream(), new File(uploadPath ,newFileName)); //    InputStream is=file.getInputStream(); //    File toFile = new File(uploadPath, newFileName); //    OutputStream os = new FileOutputStream(toFile); //    byte[] buffer = new byte[1024]; //    int length = 0; //    while ((length = is.read(buffer)) > 0) { //     os.write(buffer, 0, length); //    } //    is.close(); //    os.close();    } catch (IOException e) {     logger.error("FileUtils.copyInputStreamToFile uploadPath="+uploadPath+" newFileName ="+newFileName+" exception="+e);    }    String imageUrl=WebsiteConstant.PIC_APP_SERVER_URL+"images/ckeditor/"+newFileName;    // 返回"图像信息"选项卡并显示图片 ,在对应的文本框中显示图片资源url    out.println("<script type=\"text/javascript\">");    out.println("window.parent.CKEDITOR.tools.callFunction(" + callback       + ",'" +imageUrl + "','')");    out.println("</script>");        }else{    out.println("<script type=\"text/javascript\">");    out.println("window.parent.CKEDITOR.tools.callFunction(" + callback       + ",''," + "'文件格式不正确（必须为"+allImageExtensionName+"文件）');");    out.println("</script>");   }   }   }  }