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
// 访问方法: 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>原文：http://blog.csdn.net/zdp072/article/details/38693003