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;

     }

 }