springmvc_文件传输

导包:

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

添加文件上传解析器:

<bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="defaultEncoding" value="UTF-8"/>
    <!-- 设定文件上传的最大值5MB，5*1024*1024 -->
    <property name="maxUploadSize" value="5242880"/>
</bean>

编写控制器

//需求:文件上传
@RequestMapping("show17")
public ModelAndView show17(@RequestParam("file") MultipartFile mf) throws IOException {
    ModelAndView mv = new ModelAndView("hello");
    if(mf!=null){
        mf.transferTo(new File("e:/test/"+mf.getOriginalFilename()));
    }
    mv.addObject("msg","上传成功:"+mf.getOriginalFilename());
    return mv;
}

用psotman模拟发送文件

结果: