这是根据自己写的一个教师管理系统实现的

由于主要用在头像上，把上传的头像存储到本地

为了方便，设置一个虚拟地址：

 

 

 

然后添加虚拟路径和实际路径即可

前台：

 

 js代码：

function uploadPic(){         var formData = new FormData($('#picUpload')[0]);         $.ajax({             type: 'post',             url: "teacher/uploadPic.action",             data: formData,             cache: false,             processData: false,             contentType: false,         }).success(function (data) {             if(data !== $("#apic").attr("href")){                 $("#apic").attr("href",data);                 $("#pic").attr("src",data);                 alert("头像上传成功！");             }             else{                 alert("图片上传失败！");             }         }).error(function () {             alert("上传失败");         });    }

 

后台：

@RequestMapping(value="/teacher/uploadPic", produces=MediaType.TEXT_PLAIN_VALUE+";charset=utf-8")    @ResponseBody    public String uploadFile(MultipartFile picUploadFile,HttpServletRequest request) throws Exception{            //获取原头像地址            Teacher teacher = (Teacher) request.getSession().getAttribute("teacher");            String pic = teacher.getTpic();            //判断文件是否为图片            String originalFileName = picUploadFile.getOriginalFilename();            String houzhui = originalFileName.substring(originalFileName.lastIndexOf("."));            if(!houzhui.equals(".jpg")&&!houzhui.equals(".png")) {                return "/teacherImage/"+pic;            }                        //上传文件            String newFileName = UUID.randomUUID()+houzhui;            File newFile = new File(picUrl,newFileName);            picUploadFile.transferTo(newFile);                        //删除原有头像文件            String oldPicUrl = picUrl + "/" + pic;            File picFile = new File(oldPicUrl);            if(picFile.exists()) {                picFile.delete();            }                        //把现有文件地址保存            teacher.setTpic(newFileName);            request.getSession().removeAttribute("teacher");            request.getSession().setAttribute("teacher",teacher);            teacherService.updateTeacher(teacher);            return "/teacherImage/"+newFileName;    }

主要实现方法就是上边，如若需要其他需求，可按上边进行更改