傳統文件上傳/SpringMVC文件上傳/跨服務器上傳文件
項目結構fileupload**(文件服務器)/springmvc_fileupload(上傳文件服務器)**
springmvc_fileupload配置文件
-
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"> <modelVersion>4.0.0</modelVersion> <groupId>com.xiaoge</groupId> <artifactId>springmvc_fileupload</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <name>springmvc_fileupload Maven Webapp</name> <!-- FIXME change it to the project's website --> <url>http://www.example.com</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> <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> <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> <dependency> <groupId>com.sun.jersey</groupId> <artifactId>jersey-core</artifactId> <version>1.18.1</version> </dependency> <dependency> <groupId>com.sun.jersey</groupId> <artifactId>jersey-client</artifactId> <version>1.18.1</version> </dependency> </dependencies> <build> <finalName>springmvc_fileupload</finalName> <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> <plugins> <plugin> <artifactId>maven-clean-plugin</artifactId> <version>3.1.0</version> </plugin> <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> <plugin> <artifactId>maven-resources-plugin</artifactId> <version>3.0.2</version> </plugin> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.0</version> </plugin> <plugin> <artifactId>maven-surefire-plugin</artifactId> <version>2.22.1</version> </plugin> <plugin> <artifactId>maven-war-plugin</artifactId> <version>3.2.2</version> </plugin> <plugin> <artifactId>maven-install-plugin</artifactId> <version>2.5.2</version> </plugin> <plugin> <artifactId>maven-deploy-plugin</artifactId> <version>2.8.2</version> </plugin> </plugins> </pluginManagement> </build> </project> -
web.xml**(重點:中文亂碼的配置)**
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app> <display-name>Archetype Created Web Application</display-name> <!-- 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:spring.xml</param-value> </init-param> <!-- 當啓動服務器的時候創建servlet對象 --> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 配置解決中文亂碼的過濾器 --> <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> </filter> <filter-mapping> <filter-name>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app> -
spring.xml**(重點: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:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 開啓掃描註解 --> <context:component-scan base-package="com.xiaoge"></context:component-scan> <!-- 視圖解析器 --> <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/"></property> <property name="suffix" value=".jsp"></property> </bean> <!-- 前端控制器, 那些靜態資源不攔截 --> <!-- css目錄下的所有資源不攔截 --> <mvc:resources location="/css/" mapping="/css/**" /> <!-- images目錄下的所有資源不攔截 --> <mvc:resources location="/images/" mapping="/images/**" /> <!-- js目錄下的所有資源不攔截 --> <mvc:resources location="/js/" mapping="/js/**" /> <!-- 配置文件解析器 id值必須是multipartResolver名稱 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="maxUploadSize" value="10485760"></property> </bean> <!-- 開啓SpringMVC註解 --> <mvc:annotation-driven ></mvc:annotation-driven> </beans>
fileupload配置文件**(創建maven項目後什麼都不用管, 直接配置web.xml就行)**
-
web.xml
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app> <display-name>Archetype Created Web Application</display-name> <!-- servlet配置是關鍵 --> <servlet> <servlet-name>default</servlet-name> <servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class> <init-param> <param-name>debug</param-name> <param-value>0</param-value> </init-param> <!--加入此行的含義是:接收文件的目標服務器可以支持寫入操作--> <init-param> <param-name>readonly</param-name> <param-value>false</param-value> </init-param> <init-param> <param-name>listings</param-name> <param-value>false</param-value> </init-param> <!-- 當啓動服務器的時候創建servlet對象 --> <load-on-startup>1</load-on-startup> </servlet> </web-app>
springmvc_fileupload控制器
-
UserController
package com.xiaoge.controller; import com.sun.jersey.api.client.Client; import com.sun.jersey.api.client.WebResource; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; 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.util.List; import java.util.UUID; /** * @Author: 瀟哥 * @DateTime: 2020/4/21 下午9:18 * @Description: 控制器 */ @Controller @RequestMapping("/user") public class UserController { /** * 傳統: 文件上傳 * @throws Exception */ @RequestMapping(value="/fileupload1") public String fileupload1(HttpServletRequest request) throws Exception { System.out.println("傳統上傳文件方式...."); // 先獲取到要上傳的文件目錄 String path = request.getSession().getServletContext().getRealPath("/uploads"); // 創建File對象，一會向該路徑下上傳文件 File file = new File(path); // 判斷路徑是否存在，如果不存在，創建該路徑 if (!file.exists()) { file.mkdirs(); } // 創建磁盤文件項工廠 DiskFileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload fileUpload = new ServletFileUpload(factory); // 解析request對象 List<FileItem> items = fileUpload.parseRequest(request); // 遍歷 for (FileItem item : items) { // 判斷文件項是普通字段，還是上傳的文件 if (item.isFormField()) { } else { // 上傳文件項 // 獲取上傳文件的名稱 String filename = item.getName(); // 設置圖片名稱唯一 String uuid = UUID.randomUUID().toString().replace("_", ""); filename = uuid + "_" + filename; // 完成文件上傳 item.write(new File(path, filename)); // 刪除臨時文件 item.delete(); } } return "success"; } /** * SpringMVC: 文件上傳 * @throws Exception */ @RequestMapping(value="/fileupload2") public String fileupload2(HttpServletRequest request, MultipartFile upload) throws Exception { System.out.println("SpringMVC上傳文件方式...."); // 先獲取到要上傳的文件目錄 String path = request.getSession().getServletContext().getRealPath("/uploads"); // 創建File對象，一會向該路徑下上傳文件 File file = new File(path); // 判斷路徑是否存在，如果不存在，創建該路徑 if (!file.exists()) { file.mkdirs(); } // 上傳文件項 // 獲取上傳文件的名稱 String filename = upload.getOriginalFilename(); // 設置圖片名稱唯一 String uuid = UUID.randomUUID().toString().replace("_", ""); filename = uuid + "_" + filename; // 完成文件上傳 upload.transferTo(new File(path, filename)); return "success"; } /** * 跨服務器: 文件上傳 * @throws Exception */ @RequestMapping(value="/fileupload3") public String fileupload3(MultipartFile upload) throws Exception { System.out.println("跨服務器上傳文件方式...."); // 定義上傳文件服務器路徑 String path = "http://localhost:9090/uploads/"; // 上傳文件項 // 獲取上傳文件的名稱 String filename = upload.getOriginalFilename(); // 設置圖片名稱唯一 String uuid = UUID.randomUUID().toString().replace("_", ""); filename = uuid + "_" + filename; // 創建客戶端對象 Client client = Client.create(); // 和圖片服務器進行鏈接 WebResource webResource = client.resource(path + filename); // 上傳文件 webResource.put(upload.getBytes()); return "success"; } }
前臺頁面
-
index.jsp
<%-- Created by IntelliJ IDEA. User: xiaoge Date: 2020/4/21 Time: 下午9:18 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>index</title> </head> <body> <%--傳統方式上傳文件--%> <form action="user/fileupload1" method="post" enctype="multipart/form-data"> <%--注意: 這個name必須寫, 要不然解析request對象時, 解析不到--%> 上傳文件: <input type="file" name="upload"> <br /> <input type="submit" value="上傳"> </form> <%--SpringMVC上傳文件--%> <form action="user/fileupload2" method="post" enctype="multipart/form-data"> <%--注意: name的值必須跟控制器方法的參數名稱一致--%> 上傳文件: <input type="file" name="upload"> <br /> <input type="submit" value="上傳"> </form> <%--跨服務器上傳文件--%> <form action="user/fileupload3" method="post" enctype="multipart/form-data"> <%--注意: name的值必須跟控制器方法的參數名稱一致--%> 上傳文件: <input type="file" name="upload"> <br /> <input type="submit" value="上傳"> </form> </body> </html> -
success.jsp
<%-- Created by IntelliJ IDEA. User: xiaoge Date: 2020/4/21 Time: 下午9:19 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>上傳成功</title> </head> <body> <h3>上傳成功</h3> </body> </html>