spring-springmvc-mybatis整合笔记(12)——上传图片

一 springmvc.xml中配置解析器

在springmvc.xml中配置multipart类型解析器

<bean id="multipartResolver"
      class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <!-- 设置上传文件的最大尺寸为5MB -->
    <property name="maxUploadSize">
        <value>5242880</value>
    </property>
</bean>

二 添加pom依赖

<!-- 文件上传 -->
<dependency>
    <groupId>commons-fileupload</groupId>
    <artifactId>commons-fileupload</artifactId>
    <version>1.3.1</version>
</dependency>

三 上传图片

<tr>
    <td>商品图片</td>
    <td>
        <c:if test="${items.pic !=null}">
            <img src="/pic/${items.pic}" width=100 height=100/>
            <br/>
        </c:if>
        <input type="file"  name="items_pic"/>
    </td>
</tr>

@RequestMapping("/editItemsSubmit")
    public String editItemsSubmit(
            Model model,
            HttpServletRequest request,
            Integer id,
            @ModelAttribute("items")
            @Validated(value = ValidGroup1.class)ItemsCustom itemsCustom,
            BindingResult bindingResult,
            MultipartFile items_pic
    )throws Exception {

//原始名称
String originalFilename = items_pic.getOriginalFilename();
//上传图片
if(items_pic!=null && originalFilename!=null && originalFilename.length()>0){

    //存储图片的物理路径
    String pic_path = "D:\\tmp\\";


    //新的图片名称
    String newFileName = UUID.randomUUID() + originalFilename.substring(originalFilename.lastIndexOf("."));
    //新图片
    File newFile = new File(pic_path+newFileName);

    //将内存中的数据写入磁盘
    items_pic.transferTo(newFile);

    //将新图片名称写到itemsCustom中
    itemsCustom.setPic(newFileName);

}