- 使用SpringMVC6版本，不需要添加以下依赖：
<dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.5</version>
</dependency>
- 新建maven模块springmvc-009,pom.xml
<?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"><parent><artifactId>SpringMVC</artifactId><groupId>com.powernode</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>springmvc-009</artifactId><packaging>war</packaging><properties><maven.compiler.source>17</maven.compiler.source><maven.compiler.target>17</maven.compiler.target></properties>
<dependencies><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>6.1.7</version></dependency><dependency><groupId>org.thymeleaf</groupId><artifactId>thymeleaf-spring6</artifactId><version>3.1.2.RELEASE</version></dependency><dependency><groupId>jakarta.servlet</groupId><artifactId>jakarta.servlet-api</artifactId><version>6.1.0</version><!--指定servlet-api有tomcat容器提供,打包时将不会将servlet-api包加入打包中--><scope>provided</scope></dependency><!-- <dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.5</version></dependency>--><!-- <dependency><groupId>ch.qos.logback</groupId><artifactId>logback-classic</artifactId><version>1.5.3</version></dependency>--></dependencies>
</project>
- 增加web支持,web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd"version="5.0"><!--字符编码过滤器--><filter><filter-name>characterEncodingFilter</filter-name><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><init-param><param-name>encoding</param-name><param-value>utf-8</param-value></init-param><init-param><param-name>forceEncoding</param-name><param-value>true</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><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:dispatcherServlet-servlet.xml</param-value></init-param><multipart-config><!--支持最大文件大小--><max-file-size>1024000</max-file-size><!--表单中多选的所有文件上传最大值--><max-request-size>1024000</max-request-size><!--设置最小文件上传大小--><file-size-threshold>0</file-size-threshold></multipart-config></servlet><servlet-mapping><servlet-name>dispatcherServlet</servlet-name><url-pattern>/</url-pattern></servlet-mapping>
</web-app>
spring配置文件
<?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.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd"><!--组件扫描--><context:component-scan base-package="com.powernode.springmvc.controller"/><!--视图控制器--><!--视图解析器--><bean id="viewResolver" class="org.thymeleaf.spring6.view.ThymeleafViewResolver"><!--作用于视图渲染过程中,设置视图渲染后输出时采用的编码字符集--><property name="characterEncoding" value="utf-8"/><!--若存在多个视图解析器,配置优先级,值越小优先级越高--><property name="order" value="1"/><property name="templateEngine"><bean class="org.thymeleaf.spring6.SpringTemplateEngine"><property name="templateResolver"><bean class="org.thymeleaf.spring6.templateresolver.SpringResourceTemplateResolver"><!--设置模板文件的位置--><property name="prefix" value="/WEB-INF/templates/"/><!--设置模板文件后缀--><property name="suffix" value=".html"/><!--设置模板类型--><property name="templateMode" value="HTML"/><!--设置模板文件在读取和解析过程中采用的编码字符集--><property name="characterEncoding" value="utf-8"/></bean></property></bean></property></bean><!--视图控制器--><mvc:view-controller path="/" view-name="index"/><!--开启注解驱动--><mvc:annotation-driven/><!--静态资源处理--><mvc:default-servlet-handler/>
</beans>
- 配置前端首页
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head><meta charset="UTF-8"><title>文件上传与下载</title>
</head>
<body>
<h1>文件上传与下载</h1>
<hr>
<form th:action="@{/fileup}" method="post" enctype="multipart/form-data">文件上传: <input type="file" name="fileName"><br><input type="submit" value="上传">
</form>
</body>
</html>
- 配置FileController
package com.powernode.springmvc.controller;import jakarta.servlet.ServletContext;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;import java.io.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;@RestController
public class FileController {@RequestMapping(value = "/fileup",method = RequestMethod.POST)public String fileup(@RequestParam("fileName") MultipartFile multipartFile, HttpServletRequest request) throws IOException {String name = multipartFile.getName();System.out.println(name);//获取的名字是fineNameString originalFilename = multipartFile.getOriginalFilename();System.out.println(originalFilename);//获取的名字是文件原名Path path = Paths.get(name);System.out.println("path:"+ path);//获取输入流InputStream inputStream = multipartFile.getInputStream();BufferedInputStream bis = new BufferedInputStream(inputStream);//输出流ServletContext servletContext = request.getServletContext();String realPath = servletContext.getRealPath("/upload");File file = new File(realPath);if (!file.exists()){file.mkdirs();}File destFile = new File(file.getAbsolutePath() + "/" + originalFilename);//输出流BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(destFile));//一边读一边写byte[] bytes = new byte[1024 * 10];int readCount = 0;while((readCount = bis.read(bytes)) != -1){bos.write(bytes, 0,readCount);}bos.flush();bos.close();bis.close();return "ok";}
}
最后重启tomcat,测试
成功上传到服务器指定地址
