springmvc上传多张图片

小咪咪 2022-06-07 12:36 204阅读 0赞

在pom.xml中加入

<dependency>  
        <groupId>commons-fileupload</groupId>  
        <artifactId>commons-fileupload</artifactId>  
        <version>1.3.1</version>  
    </dependency>  
    <dependency>  
        <groupId>commons-io</groupId>  
        <artifactId>commons-io</artifactId>  
        <version>2.4</version>  
    </dependency>

2.在spring的配置文件中加入

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
        <property name="defaultEncoding" value="utf-8"/>  
          
        <property name="maxInMemorySize" value="10240"/>  
          
        <property name="maxUploadSize" value="-1"/>  
    </bean>

3.前台

4.后台

@RequestMapping("addSchoolHonor")
    public String addSchoolHonor(Model model, @RequestParam(value = "file", required = false) MultipartFile[] file,TbResource tbResource) throws IllegalStateException, IOException {
        TbCategory item = categoryService.selectCaName(tbResource.getCaName());
        if (!item.equals(null)) {
            TbResource tb = new TbResource();
            tb.setCaId(item.getCaId());
            tb.setCaName(tbResource.getCaName());
        if(!tbResource.getCaName().equals("校园风光")) {
            tb.setReContent(tbResource.getReContent());
        }
        for (MultipartFile mf : file) {
            if (!mf.isEmpty()) {
                String path =                                      
        session.getServletContext().getRealPath("/static/uploadimg");
        //‘’/static/uploadimg‘’是自己webContent下的包
        String fileName = mf.getOriginalFilename();
        fileName = UUID.randomUUID() + "." + fileName.substring(fileName.lastIndexOf(".") + 1);
    // uuid+文件扩展名避免重名,中文名等问题
        File uploadFile = new File(path, fileName);
        mf.transferTo(uploadFile);
        tb.setReTitle(fileName);
        resourceService.insert(tb);
       }
    }
        model.addAttribute("message", "添加成功");
    } else {
        model.addAttribute("message", "不存在该类别，添加失败");
    }
        return "admin/general/addschoolhonor";
    }

5.返回前台显示时

<tr th:each="general,generalStart:${pagemsg.lists}">
          <td><img alt="无图片" width="100px;" height="80px;" th:src="@{/static/uploadimg/{picture}(picture=${general.reTitle})}" /></td>
          <td th:if="${sign}=='1'"><a th:href="@{/general/deleteScenery?(id=${general.reId})}" onclick="return confirm('确定要删除吗')">Delete</a></td></tr>