SSH文件上传代码片段

一、文件上传限制：

在web.xml中配置Struts前端控制器时，设置初始化参数：如下图所示

二、controller代码

 @Namespace("/")
 @ParentPackage("struts-default")
 @Scope("prototype")
 @Controller
 public class ImageAction extends ActionSupport {

     private File imgFile;

     public void setImgFile(File imgFile) {
         this.imgFile = imgFile;
     }
     private String imgFileFileName;

     public void setImgFileFileName(String imgFileFileName) {
         this.imgFileFileName = imgFileFileName;
     }

     @Action(value = "imageAction_upload")
     public String upload() throws IOException {
         Map<String,Object> map = new HashMap<>();
         try {

             String dirPath = "/upload/";
             ServletContext servletContext = ServletActionContext.getServletContext();
             String realPath = servletContext.getRealPath(dirPath);

             String suffix = imgFileFileName.substring(imgFileFileName.lastIndexOf("."));
             String fileName = UUID.randomUUID().toString().replaceAll("-","")+suffix;
             File destFile = new File(realPath+"/"+fileName);

             FileUtil.copyFile(imgFile,destFile);

             String contextPath = ServletActionContext.getServletContext().getContextPath();

             map.put("error",0);
             map.put("url",contextPath+dirPath+fileName);

         } catch (IOException e) {
             map.put("error",1);
             map.put("message",e.getMessage());
             e.printStackTrace();
         }
         String json = JSONObject.fromObject(map).toString();
         HttpServletResponse response = ServletActionContext.getResponse();
         response.setContentType("text/html;charset=UTF-8");
         response.getWriter().write(json);

         return NONE;
     }
 }