SpringMVC学习笔记（十一）

最新推荐文章于 2024-06-24 21:08:16 发布

原创最新推荐文章于 2024-06-24 21:08:16 发布 · 260 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#spring mvc

SpringMVC 专栏收录该内容

15 篇文章

订阅专栏

本文介绍了一个使用SpringMVC实现文件上传的具体案例，包括配置multipart类型解析器、创建控制器处理文件上传请求，并展示了从项目结构到运行结果的全过程。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

1、SpringMVC文件上传

需要注意的是如何设置虚拟目录和物理目录以及配置multipart类型解析器。

2、简单实例

（1）目录结构

（2）UploadController.java

package cn.hwd.springmvc.controller;

import java.io.File;
import java.util.UUID;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;

@Controller
@RequestMapping("/upload")
public class UploadController {
	
	@RequestMapping("/index.action")  
    public String index() throws Exception {
        return "index";  
    }
	
	@RequestMapping("/upload.action")  
    public String upload(Model model, @RequestParam MultipartFile file) throws Exception {
		if(file != null) {
			String path = "D:\\workspace\\upload\\";
			String originalFilename = file.getOriginalFilename();
			String newFilename = UUID.randomUUID() + 
					originalFilename.substring(originalFilename.lastIndexOf("."));
			File newFile = new File(path + newFilename);
			//将内存中的数据写入磁盘
			file.transferTo(newFile);
			model.addAttribute("newFilename", newFilename);
			return "success";
		}else{
			return "index";
		} 
    }
	
}

（3）spring-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-4.3.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd">
    
    <context:component-scan base-package="cn.hwd.springmvc.controller" />
    
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/page/" />
		<property name="suffix" value=".jsp" />
	</bean>
	
	<!-- multipart类型解析器 -->
	<bean id="multipartResolver" 
		class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<!-- 上传文件大小 -->
		<property name="maxUploadSize">
			<value>1048576</value>
		</property>
	</bean>
	
</beans>

（4）pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>cn.hwd</groupId>
  <artifactId>SpringMVC37</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>SpringMVC37 Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <build>
    <finalName>SpringMVC37</finalName>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.0</version>
        <configuration>
          <source>1.7</source>
          <target>1.7</target>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <dependencies>
  	<dependency>
  		<groupId>javax.servlet</groupId>
  		<artifactId>servlet-api</artifactId>
  		<version>2.5</version>
  	</dependency>
  	<dependency>
	  <groupId>org.springframework</groupId>
	  <artifactId>spring-webmvc</artifactId>
	  <version>4.0.2.RELEASE</version>
	</dependency>
	<dependency>
		<groupId>javax.servlet</groupId>
		<artifactId>jstl</artifactId>
		<version>1.2</version>
	</dependency>
	<dependency>
		<groupId>taglibs</groupId>
		<artifactId>standard</artifactId>
		<version>1.1.2</version>
	</dependency>
	<dependency>
    	<groupId>commons-fileupload</groupId>
    	<artifactId>commons-fileupload</artifactId>
    	<version>1.3</version>
	</dependency>
	<dependency>
	    <groupId>commons-io</groupId>
	    <artifactId>commons-io</artifactId>
	    <version>2.4</version>
	</dependency>
  </dependencies>
</project>

（5）index.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!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=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
	<form action="<c:url value='/upload/upload.action'/>" method="post" enctype="multipart/form-data">
		<input type="file" name="file" />
		<input type="submit" value="submit" />
	</form>
</body>
</html>

（6）success.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!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=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
	<c:if test="${newFilename!=null }">
		<img src="/pic/${newFilename }" />
	</c:if>
</body>
</html>

（7）web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>Archetype Created Web Application</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring-servlet.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>*.action</url-pattern>
  </servlet-mapping>
</web-app>

（9）运行结果