6.SpringMVC的文件上传
6.1-SpringMVC的请求-文件上传-客户端表单实现(应用)
文件上传客户端表单需要满足：
表单项type=“file”
表单的提交方式是post
表单的enctype属性是多部分表单形式，及enctype=“multipart/form-data”
<form action="${pageContext.request.contextPath}/user/login22" method="post" enctype="multipart/form-data"> 名称<input type="text" name="username"><br/> 文件1<input type="file" name="uploadFile"><br/> <input type="submit" value="提交"> </form>6.2-SpringMVC的请求-文件上传-文件上传的原理(理解)
6.3-SpringMVC的请求-文件上传-单文件上传的代码实现1(应用)
添加依赖
<dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.3</version> </dependency>配置多媒体解析器
<!--配置文件上传解析器--> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="defaultEncoding" value="UYF-8"/> <property name="maxUploadSize" value="500000"/> </bean>后台程序
@RequestMapping(value="/login22") @ResponseBody public void login22(String username, MultipartFile uploadFile) throws IOException { System.out.println(username); System.out.println(uploadFile); }6.4-SpringMVC的请求-文件上传-单文件上传的代码实现2(应用)
完成文件上传
@RequestMapping(value="/quick22") @ResponseBody public void login22(String username, MultipartFile uploadFile) throws IOException { System.out.println(username); //获得上传文件的名称 String originalFilename = uploadFile.getOriginalFilename(); uploadFile.transferTo(new File("D:\\upload\\"+originalFilename)); }6.5-SpringMVC的请求-文件上传-多文件上传的代码实现(应用)
多文件上传，只需要将页面修改为多个文件上传项，将方法参数MultipartFile类型修改为MultipartFile[]即可
<form action="${pageContext.request.contextPath}/user/quick23" method="post" enctype="multipart/form-data"> 名称<input type="text" name="username"><br/> 文件1<input type="file" name="uploadFile"><br/> 文件2<input type="file" name="uploadFile"><br/> <input type="submit" value="提交"> </form>@RequestMapping(value="/login23") @ResponseBody public void save23(String username, MultipartFile[] uploadFile) throws IOException { System.out.println(username); /* //MultipartFile uploadFile, MultipartFile uploadFile2 String filename1 = uploadFile.getOriginalFilename(); uploadFile.transferTo(new File("D:\\uploadFile\\" + filename1)); String filename2 = uploadFile2.getOriginalFilename(); uploadFile2.transferTo(new File("D:\\uploadFile\\" + filename2)); */ for (MultipartFile multipartFile : uploadFile) { String originalFilename = multipartFile.getOriginalFilename(); multipartFile.transferTo(new File("D:\\upload\\"+originalFilename)); } }6.6-SpringMVC的请求-知识要点(理解，记忆)
在进行文件上传时需要前台的file的名称与后台的名称一致，才能进行文件上床。
