1. 引入Jar包
commons-fileupload-1.2.2.jar
commons-io-2.1.jar
2.user-servlet.xml中配置文件上传
<!-- 配置文件上传 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="maxUploadSize" value="5000000"></property> </bean>3. UserController.java
@Controller @RequestMapping("/user") public class UserController { // 使用map模拟数据库 private Map<String, User> userMap = new HashMap<String, User>(); public UserController() { userMap.put("zhangsan", new User("zhangsan", "123")); userMap.put("lishimin", new User("lishimin", "456")); } // 文件上传 // 訪问方法: http://localhost/springmvc_user/upload.jsp @RequestMapping(value="/upload",method=RequestMethod.POST) public String upload(@RequestParam("attachs")MultipartFile[] attachs,HttpServletRequest req) throws IOException { String realpath = req.getSession().getServletContext().getRealPath("/resources/upload"); System.out.println(realpath); for(MultipartFile attach:attachs) { if(attach.isEmpty()){ continue; } File file = new File(realpath + "/" + attach.getOriginalFilename()); FileUtils.copyInputStreamToFile(attach.getInputStream(),file); } return "success"; } }4. upload.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>文件上传</title> </head> <body> <form method="post" action="user/upload" enctype="multipart/form-data"> Attach:<br/> <input type="file" name="attachs"/><br/> <input type="file" name="attachs"/><br/> <input type="file" name="attachs"/><br/> <input type="submit" value="上传文件"/> </form> </body> </html>
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