本篇文章，我们会教你通过eclipse构建一个创建一个Java web项目并转为maven工程，实现用spring mvc将所选文件上传到指定目录 开发环境： 1.JDK 1.7 2.Maven 3.3.9 3.Eclipse Mars.1 4.Spring 4.2.1.RELEASE 5.Spring MVC 4.2.1.RELEASE 6.Tomcat7
1.目录结构
2. 创建项目 Eclipse - File - New - Dynamic Web Project 输入项目名称，然后右击该项目Configure-Convert to Maven project 在WebContent/WEB-INF下新建一个web.xml文件 3.pom.xml
<project xmlns="/POM/4.0.0" xmlns:xsi="/2001/XMLSchema-instance" xsi:schemaLocation="/POM/4.0.0 /xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>org.thinkingingis</groupId><artifactId>SpringUploadFiles</artifactId><version>0.0.1-SNAPSHOT</version><packaging>war</packaging><build><sourceDirectory>src</sourceDirectory><plugins><plugin><artifactId>maven-compiler-plugin</artifactId><version>2.3.2</version><configuration><source>1.7</source><target>1.7</target></configuration></plugin></plugins></build><dependencies><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>4.2.1.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aop</artifactId><version>4.2.1.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>4.2.1.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>4.2.1.RELEASE</version></dependency><dependency><groupId>javax.servlet</groupId><artifactId>jstl</artifactId><version>1.2</version></dependency><!-- fileupload --><dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.2</version></dependency><!-- io --><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>1.4</version></dependency></dependencies></project>
4.ThinkFileUpload.java 这个类用来存放MultipartFile类型的对象，这是spring framework提供的一个用于接收所上传文件内容的类。
package org.thinkingingis.form;import java.util.List;import org.springframework.web.multipart.MultipartFile;public class ThinkFileUpload {private List<MultipartFile> thinkFiles;public List<MultipartFile> getFiles() {return thinkFiles;}public void setFiles(List<MultipartFile> files) {this.thinkFiles = files;}}
5.FileUploadController.java 拥有两个方法
thinkDisplayForm －－ 返回上传文件的页面
crunchifySave －－ 用于接收文件并保存文件到指定目录，这里保存在/Users/gisboy/node/ 目录下
package org.thinkingingis.controller;import java.io.File;import java.io.IOException;import java.util.ArrayList;import java.util.List;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.ModelAttribute;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.multipart.MultipartFile;import org.thinkingingis.form.ThinkFileUpload;@Controllerpublic class FileUploadController {@RequestMapping(value = "/upload", method = RequestMethod.GET)public String thinkDisplayForm(){//从 index.jsp 拦截请求，请求名称为 : /uploadreturn "uploadfile";}@RequestMapping(value = "/savefiles", method = RequestMethod.POST)public String crunchifySave(@ModelAttribute("uploadForm") ThinkFileUpload uploadForm,Model map) throws IllegalStateException, IOException {//文件的存放路径String saveDirectory = "/Users/gisboy/node/";List<MultipartFile> thinkFiles = uploadForm.getFiles();List<String> fileNames = new ArrayList<String>();if (null != thinkFiles && thinkFiles.size() > 0) {for (MultipartFile multipartFile : thinkFiles) {String fileName = multipartFile.getOriginalFilename();if (!"".equalsIgnoreCase(fileName)) {multipartFile.transferTo(new File(saveDirectory + fileName));fileNames.add(fileName);}}}map.addAttribute("files", fileNames);return "uploadfilesuccess";}}
6.jsp文件
index.jsp
<html><head><title>Spring Upload Files by ThinkingInGIS</title><style type="text/css">body {background-image: url(./resources/bg.png);}</style></head><body><br><div style="text-align:center"><h2>Hey Buddy..!! This is a Spring MVC Demo<br> <br></h2><h3><a href="upload.html">Click here to Jump to file upload page... </a></h3></div></body></html>
uploadfile.jsp
<%@taglib uri="/jsp/jstl/core" prefix="c"%><%@taglib uri="/tags/form" prefix="form"%><%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>上传文件</title><script src="/ajax/libs/jquery/1.8.2/jquery.min.js"></script><script>$(document).ready(function(){//add more file components if Add is clicked$('#addFile').click(function() {var fileIndex = $('#fileTable tr').children().length;console.log(fileIndex);$('#fileTable').append('<tr><td>' + '<input type="file" name="files[' + fileIndex + ']" />' + '</td></tr>');});});</script><style type="text/css">body {background-image:url(bg.png);}</style></head><body><br><br><div align="center"><h1>ThinkingInGIS - Spring MVC Upload Multiple Files Example</h1><form:form method="post" action="savefiles.html"modelAttribute="uploadForm" enctype="multipart/form-data"><p>Select files to upload. Press Add button to add more fileinputs.</p><table id="fileTable"><tr><td><input name="files[0]" type="file" /></td></tr><tr><td><input name="files[1]" type="file" /></td></tr></table><br /><input type="submit" value="Upload" /><input id="addFile" type="button" value="Add File" /></form:form><br /></div></body></html>
uploadfilesuccess.jsp
<%@taglib uri="/jsp/jstl/core" prefix="c"%><html><head><title>ThinkingInGIS - Upload Multiple Files Example</title><style type="text/css">body {background-image:url(bg.png);}</style></head><body><br><br><div align="center"><h1>ThinkingInGIS - Spring MVC Upload Multiple Files Example</h1><p>Following files are uploaded successfully.</p><ol><c:forEach items="${files}" var="file">- ${file} <br></c:forEach></ol><a href="http://localhost:8080/SpringUploadFiles/index.jsp"><inputtype="button" value="Go Back" /></a> <br/><br /><br /><divstyle="font-family: verdana; line-height: 25px; padding: 5px 10px; border-radius: 10px; border: 1px dotted #A4A4A4; width: 50%; font-size: 12px;">Spring MVC Upload Multiple Files Example by <ahref='/ThinkingInGIS/'>ThinkingInGIS</a>. Click <ahref='/ThinkingInGIS/SpringUploadFiles'>here</a>to get source code.<br></div></div></body></html>
7.web.xml
<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="/2001/XMLSchema-instance" xmlns="/xml/ns/javaee" xsi:schemaLocation="/xml/ns/javaee /xml/ns/javaee/web-app_3_0.xsd" version="3.0"><display-name>SpringUploadFiles</display-name><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list><servlet><servlet-name>springuploadfiles</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>springuploadfiles</servlet-name><url-pattern>*.html</url-pattern></servlet-mapping></web-app>
8.springuploadfiles-servlet.xml
<beans xmlns="/schema/beans"xmlns:mvc="/schema/mvc" xmlns:context="/schema/context"xmlns:xsi="/2001/XMLSchema-instance"xsi:schemaLocation="/schema/beans/schema/beans/spring-beans.xsd/schema/mvc /schema/mvc/spring-mvc.xsd/schema/context /schema/context/spring-context.xsd"><context:component-scan base-package="org.thinkingingis.controller" /><bean id="multipartResolver"class="org.springframework.monsMultipartResolver" /><bean id="viewResolver"class="org.springframework.web.servlet.view.UrlBasedViewResolver"><property name="viewClass"value="org.springframework.web.servlet.view.JstlView" /><property name="prefix" value="/WEB-INF/jsp/" /><property name="suffix" value=".jsp" /></bean></beans>
9.完成之后启动项目
在浏览器中输入 http://localhost:8080/SpringUploadFiles/
运行截图如下：
点击链接 跳转到upload页面，选择待上传的文件
文件上传成功页面：
指定路径下的文件：
至此，一个通过简单的利用spring mvc 上传多文件的小程序就完成啦。
源码地址： /ThinkingInGIS/SpringUploadFiles （如遇到问题，请留言给作者，以便共同探讨gis知识。thinkingingis@） 微信公众号：ThinkingInGIS
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