• SpringMVC11文件上传


     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
    复制代码
    <%@ 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>
    复制代码
    复制代码
    <%@ 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>
    复制代码
    success.jsp成功界面
    复制代码
    @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! 如果不加@RequestParam
         * 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";
        }
    
    }
    复制代码
    对应的controller代码
    复制代码
    <?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>
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  • 原文地址:https://www.cnblogs.com/HHR-SUN/p/7218689.html
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