SpringMVC的文件上传需要注意的问题

简要的代码罗列

1、需要的jar包

<!-- https://mvnrepository.com/artifact/commons-io/commons-io -->    <dependency>        <groupId>commons-io</groupId>        <artifactId>commons-io</artifactId>        <version>2.4</version>    </dependency>    <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->    <dependency>        <groupId>commons-fileupload</groupId>        <artifactId>commons-fileupload</artifactId>        <version>1.3.1</version>    </dependency>

2、dispatcher-servlet.xml

<!--需要添加bean--><bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">        <property name="maxUploadSize" value="209715200"/>        <property name="defaultEncoding" value="UTF-8"/>        <property name="resolveLazily" value="true"/></bean>

3、Controller

@RequestMapping(value="/doUpload",method=RequestMethod.POST)    public String doUploadFile(@RequestParam("file") MultipartFile file) throws IOException{        if(!file.isEmpty()){            FileUtils.copyInputStreamToFile(file.getInputStream(),new File("E:\\temp\\",System.currentTimeMillis()+file.getOriginalFilename()));        }        return "success";    }

5、upload.jsp

<form action="<%=request.getContextPath()%>/hello/doUpload" method="post" enctype="multipart/form-data">        <input type="file" name="file">        <input type="submit">    </form>

注意： jsp文件中enctype属性需要写，不然会报以下的错

这里的坑我查了很久，需要很注意！！！！