新手程序员笔记-Spring-spring上传下载

设置为二进制表单提交：

enctype="multipart/form-data"

xml文件

<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

<!-- 设置上传文件的最大尺寸为1MB -->

<property name="maxUploadSize">

<value>1048576</value>

</property>

</bean>

单文件上传：

MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;

CommonsMultipartFile file = (CommonsMultipartFile) multipartRequest.getFile("file标签的name值");

<!-- 1：file == null ：没有选择文件 2：file.getOriginalFilename()，如果不能得到文件名，表示文件不存在-->

file.transferTo(new File(写入文件的路径和文件名));

多文件上传：

多文件上传摘选自：http://blog.csdn.net/a1314517love/article/details/24183273

CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());

if( multipartResolver.isMultipart(request)){//判断是否有文件上传

MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)request;

Iterator<String> iter = multiRequest.getFileNames();

while(iter.hasNext()){

MultipartFile file = multiRequest.getFile(iter.next());

file.transferTo(localFile);

}

}