目录
一、创建项目
二、引入依赖
三、web.xml
四、编写上传文件的jsp页面
五、spring-mvc.xml
六、controller
七、运行
一、创建项目
二、引入依赖
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.qcby</groupId>
<artifactId>springMVC15</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<!--版本锁定-->
<spring.version>5.0.2.RELEASE</spring.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<!--导入文件上传的jar报包,下面这两个都是-->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
</dependencies>
</project>
三、web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<!--配置解决中文乱码问题的过滤器-->
<filter>
<filter-name>characterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!--指定使用编码集-->
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--前端控制器-->
<servlet>
<servlet-name>DispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--配置初始化参数-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>DispatcherServlet</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
四、编写上传文件的jsp页面
index.jsp
<%--
Created by IntelliJ IDEA.
User: lenovo
Date: 2024/11/7
Time: 21:50
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h3>文件上传</h3>
<form action="fileupload.do" method="post" enctype="multipart/form-data">
选择文件:<input type="file" name="upload" /><br/>
<input type="submit" value="上传" />
</form>
</body>
</html>
五、spring-mvc.xml
spring-mvc.xml里配置文件解析器
<?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.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 配置spring创建容器时要扫描的包 -->
<context:component-scan base-package="com.qcby"></context:component-scan>
<!--配置视图解析器,进行页面的跳转-->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!--跳转的页面的路径-->
<property name="prefix" value="/WEB-INF/pages/" />
<!--跳转页面的后缀名称-->
<property name="suffix" value=".jsp" />
</bean>
<!--配置文件上传的解析器组件。id的名称是固定,不能乱写-->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!--设置上传文件的总大小 8M = 8 * 1024 * 1024 -->
<property name="maxUploadSize" value="8388608" />
</bean>
<!--让映射器、适配器和处理器生效(默认不配置也是可以的)-->
<mvc:annotation-driven/>
</beans>
六、controller
UploadController类
package com.qcby.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.util.UUID;
@Controller
public class UploadController {
@RequestMapping("/fileupload.do")
public String upload(MultipartFile upload, HttpServletRequest request) throws IOException {
// 把文件上传到哪个位置
String realPath = request.getSession().getServletContext().getRealPath("/uploads");
// 创建该文件夹
File file = new File(realPath);
// 判断该文件夹是否存在
if(!file.exists()){
// 创建文件夹
file.mkdirs();
}
// 获取到上传文件的名称
String filename = upload.getOriginalFilename();
// 把文件的名称修改成为一的值 sdfs-csdf-fwer-sdfw
String uuid = UUID.randomUUID().toString().replace("-", "").toUpperCase();
// 唯一的值
filename = uuid+"_"+filename;
System.out.println("文件名称:"+filename);
// 上传文件
upload.transferTo(new File(file,filename));
return "success";
}
}
七、运行
控制台:
uploads文件夹:
上传成功!