1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> 2 <% 3 String path = request.getContextPath(); 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 5 %> 6 <!DOCTYPE HTML> 7 <html> 8 <head> 9 <base href="<%=basePath%>"> 10 11 <title>My JSP 'index.jsp' starting page</title> 12 <meta http-equiv="pragma" content="no-cache"> 13 <meta http-equiv="cache-control" content="no-cache"> 14 <meta http-equiv="expires" content="0"> 15 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 16 <meta http-equiv="description" content="This is my page"> 17 18 <!-- 19 <link rel="stylesheet" type="text/css" href="styles.css"> 20 --> 21 22 </head> 23 <body> 24 <form action="user/login" method="post" enctype="multipart/form-data"> 25 <input type="file" name="imgs"/> 26 <input type="file" name="imgs"/> 27 <input type="file" name="imgs"/> 28 <button>上传文件</button> 29 </form> 30 31 </body> 32 </html>
index.jsp文件上传的页面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML>
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form action="user/login" method="post" enctype="multipart/form-data">
<input type="file" name="imgs"/>
<input type="file" name="imgs"/>
<input type="file" name="imgs"/>
<button>上传文件</button>
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'success.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<h1>webroot success页面</h1>
</body>
</html>
success.jsp成功界面
@Controller
@RequestMapping("/user")
public class MyController {
/**
* 单个文件上传
* MultipartFile img :必须和表单中的name属性值一致
* @throws Exception
* @throws IllegalStateException
@RequestMapping(value = "/login")
public String login(MultipartFile img, HttpSession session)
throws IllegalStateException, Exception {
System.out.println("进入了login......");
// 获取上传的位置
String path = session.getServletContext().getRealPath("/images");
// 获取文件的名称
String filename = img.getOriginalFilename();
System.out.println(img.getOriginalFilename());
System.out.println(img.getName()); // 表单中name的属性值
System.out.println(img.getContentType()); // 上传文件的类型
// 上传文件只能是图片 通过MIME类型 来判断
if (img.getContentType().equals("image/jpeg")) {
img.transferTo(new File(path, filename)); // 上传
}
return "/success.jsp";
}*/
/**
* 多个文件上传
* @RequestParam 必须使用！ [email protected]
* 默认前台的每一个imgs都是一个数组！
* 我们想要的是前台的所有上传文件 在一个数组里面！
*/
@RequestMapping(value = "/login")
public String login(@RequestParam MultipartFile[] imgs, HttpSession session)
throws IllegalStateException, Exception {
System.out.println("进入了login......");
// 获取上传的位置
String path = session.getServletContext().getRealPath("/images");
// 循环获取文件的名称
for (MultipartFile img : imgs) {
// 判断用户是否选择文件
if (img.getSize() > 0) {
String filename = img.getOriginalFilename();
img.transferTo(new File(path, filename)); // 上传
}
}
return "/success.jsp";
}
}
对应的controller代码
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<!-- 配置需要扫描的包 -->
<context:component-scan base-package="cn.bdqn"/>
<!-- 开启注解 -->
<mvc:annotation-driven/>
<!-- 配置文件上传 id必须是multipartResolver 因为已经在中央调度器
中定义了
Well-known name for the MultipartResolver object in the bean factory for this namespace. */
public static final String MULTIPART_RESOLVER_BEAN_NAME = "multipartResolver";
-->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="utf-8"/><!--乱码问题 -->
<property name="maxUploadSize" value="1048576"/><!-- 文件总大小不能超过 1M-->
<!-- <property name="maxUploadSizePerFile" value="1048576"/>单个文件不能超过1m -->
</bean>
</beans>
原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/tech/pnotes/12159.html