Spring MVC多段文件上传

 从web.xml开始,申明:现在只做了可以上传了，还有细节没有做好。

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 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>springMVC</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> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> </web-app>
相应要在web-inf/spring-servlet.xml

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd"> <beans> <!-- lets use the Commons-based implementation of the MultipartResolver interface --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="maxUploadSize" value="10000000000"></property> </bean> <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="mappings"> <value> /upload.do=fileUploadController </value> </property> </bean> <bean id="fileUploadController" class="com.spring.mvc.controller.FileUploadController"> <property name="commandClass" value="com.spring.mvc.controller.FileUploadBean"> </property> <property name="formView" value="tranf.jsp" /> <property name="successView" value="success.jsp" /> </bean> </beans>

formView:form视图；

successView：成功视图；

fileUploadController :控制器;

package com.spring.mvc.controller; import java.io.File; import java.io.IOException; import java.util.Iterator; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.util.FileCopyUtils; import org.springframework.validation.BindException; import org.springframework.web.bind.ServletRequestDataBinder; import org.springframework.web.multipart.MultipartHttpServletRequest; import org.springframework.web.multipart.commons.CommonsMultipartFile; import org.springframework.web.multipart.support.ByteArrayMultipartFileEditor; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.SimpleFormController; @SuppressWarnings("deprecation") public class FileUploadController extends SimpleFormController { static Log log = LogFactory.getLog(FileUploadController.class); private String uploadDir; /** * well, let's do nothing with the bean for now and return cast the bean * let's see if there's content there */ protected ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, Object command, BindException errors) throws ServletException, IOException, Exception { FileUploadBean bean = (FileUploadBean) command; byte[] bytes = bean.getFile(); MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request; @SuppressWarnings("rawtypes") Iterator iter = multipartRequest.getFileNames(); while (iter.hasNext()) { String fileName = (String) iter.next(); CommonsMultipartFile file = (CommonsMultipartFile) multipartRequest .getFile(fileName); if (file.getSize() != 0) { String uploadDir = this.getUploadDir(); File dirPath = new File(uploadDir); if (!dirPath.exists()) { dirPath.mkdirs(); } String sep = System.getProperty("file.separator"); if (log.isDebugEnabled()) { log.debug("uploading to: " + uploadDir + sep + file.getOriginalFilename()); } File uploadedFile = new File(uploadDir + sep + file.getOriginalFilename()); FileCopyUtils.copy(bytes, uploadedFile); System.out.println("********************************"); System.out.println(uploadedFile.getAbsolutePath()); System.out.println(bytes.length); } } return super.onSubmit(request, response, command, errors); } /** * to actually be able to convert Multipart instance to byte[] we have to * register a custom editor now Spring knows how to handle multipart object * and convert them */ protected void initBinder(HttpServletRequest request, ServletRequestDataBinder binder) throws ServletException { binder.registerCustomEditor(byte[].class, new ByteArrayMultipartFileEditor()); } public String getUploadDir() { uploadDir = "E:/logs"; return uploadDir; } public void setUploadDir(String uploadDir) { this.uploadDir = uploadDir; } }
上传jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!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=UTF-8"> <title>Insert title here</title> </head> <body> <h1>please select a file</h1> <form method="post" action="upload.do" enctype="multipart/form-data"> <input type="file" name="file" /> <input type="submit" /> </form> </body> </html>

加入的jar包有：

<pre name="code" class="plain">commons-logging-api-1.1.jar org.springframework.web.servlet-3.0.5.RELEASE.jar

commons-logging-1.0.4.jar
org.springframework.web-3.0.5.RELEASE.jar