关于图片上传-蒲公英云

关于图片上传

添加图片jsp

<form action="${path }/teacher/upHeadImg" method="post"     enctype="multipart/form-data">
 <input type="file" name="phImage" value="phImage"/>
 <input type="submit">
  </form>

然后是controller

//添加临床视频
    @RequestMapping(value="/addClinicVideo",method={RequestMethod.POST})
    public String addClinicVideo(Clinicvideo clinicvideo,HttpServletRequest request
            ,@RequestParam("phImage") MultipartFile file){
        //1.判断上传的头像是否为空
        if(!file.isEmpty()){
            //头像上传
            //2、指定上传目录
            String str=request.getSession().getServletContext().getRealPath("\\upload");
            System.out.println(str);
            //3、如果路径不存在，创建此路径
            File path=new File(str);
            System.out.println("path="+path);
            if(!path.exists()){
                path.mkdirs();
            }
            //4、获取名字
            String name=file.getOriginalFilename();
            //5、防止名字重复
            name=UUID.randomUUID()+name;
            //6、拼接路径 路径加名字 文件
            File desPath= new File(path, name);
            //7、文件上传
            try {
                                            //要上传的路径 ， 文件-------字节数组
                FileUtils.writeByteArrayToFile(desPath, file.getBytes());
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            //8、把改路径设置到user里面数据库里D://xxxx//upload//user/xx.jpg
            clinicvideo.setImage(name);
            System.out.println(clinicvideo.getImage()+"数据库中路径");
        }
        clinicVideoService.add(clinicvideo);
        return "redirect:/clinicVideo/findClinicVideo";
    }

从代码中可以看出图片上传的路径为项目webApp下的upload文件夹下，所以我需要再springmvc-action.xml中加入upload的资源路径映射

<mvc:resources location="/upload/" mapping="/upload/**"/>

然后显示的图片

<!--如果没有图片给定个默认图片-->
<c:if test="${clinicVideo.image == null || clinicVideo.image ==''}">
<img src="${pageContext.request.contextPath }/img/avatar_lg.png" width="100px" height="100px"> </c:if>
<!--显示图片-->
<c:if test="${clinicVideo.image != null && clinicVideo.image !=''}">
                        <img class="img-thumbnail" src="${pageContext.request.contextPath}/upload/${clinicVideo.image}" width="100px" height="100px"> 
                        </c:if>

注意上传包：

< dependency >    
            < groupId > commons-fileupload </ groupId >    
            < artifactId > commons-fileupload </ artifactId >    
            < version > 1.3.1 </ version >    
</ dependency >

springmvc-action.xml中配置

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
          <!-- 文件上传的大小 -->
            <property name="maxUploadSize" value="10200253"></property> 
      </bean>