java 支持 超大上G , 多附件上传

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首先 确定要上传的目录

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WEB.XML 文件

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        <listener>    <listener-class><!-- 临时文件收集器 , 支持超大附件必须项 -->      org.apache.commons.fileupload.servlet.FileCleanerCleanup    </listener-class>  </listener><context-param><param-name>tempXlsPath</param-name><!-- 要上传的目录 --><param-value>/WEB-INF/temp/</param-value></context-param><servlet>?<servlet-name>UploadServlet</servlet-name><servlet-class>com.thams.web.fileServlet.UploadServlet</servlet-class></servlet><servlet-mapping><servlet-name>UploadServlet</servlet-name><url-pattern>/servlet/UploadServlet</url-pattern></servlet-mapping>

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servlet

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package com.thams.web.fileServlet;import java.io.File;import java.io.IOException;import java.util.List;import javax.servlet.ServletContext;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.commons.fileupload.FileItem;import org.apache.commons.fileupload.FileItemFactory;import org.apache.commons.fileupload.FileUploadException;import org.apache.commons.fileupload.disk.DiskFileItemFactory;import org.apache.commons.fileupload.servlet.FileCleanerCleanup;import org.apache.commons.fileupload.servlet.ServletFileUpload;import org.apache.commons.io.FileCleaningTracker;import org.apache.commons.io.FilenameUtils;import org.apache.log4j.Logger;/** * @author serv */public class UploadServlet extends HttpServlet {private static Logger log = Logger.getLogger(UploadServlet.class);protected void service(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {response.setContentType("text/html;charset=UTF-8");// Check that we have a file upload requestboolean isMultipart = ServletFileUpload.isMultipartContent(request);if (!isMultipart) {log.debug("没有可上传的文件, 你想干什么 !");return;}// Create a factory for disk-based file itemsString tempFilePath = getServletContext().getRealPath("/")+getServletContext().getInitParameter("tempXlsPath");FileItemFactory factory = newDiskFileItemFactory(getServletContext(), new File(tempFilePath));// Create a new file upload handlerServletFileUpload upload = new ServletFileUpload(factory);upload.setHeaderEncoding("UTF-8");/* FileItem */List<FileItem> items = null;try {// Parse the requestitems = (List<FileItem>) upload.parseRequest(request);String filename = null;for (FileItem fileItem : items) {if (!fileItem.isFormField()){//filefilename = FilenameUtils.getName(fileItem.getName());fileItem.write(new File(tempFilePath+filename));response.getWriter().write(tempFilePath+filename+"<br>");}}} catch (FileUploadException e) {log.error(e.getMessage());} catch (Exception e) {log.error(e.getMessage());}}/** * The FileCleanerCleanup provides an instance of org.apache.commons.io.FileCleaningTracker.  * This instance must be used when creating a org.apache.commons.fileupload.disk.DiskFileItemFactory. */public static DiskFileItemFactory newDiskFileItemFactory(ServletContext context, File repository) {FileCleaningTracker fileCleaningTracker = FileCleanerCleanup.getFileCleaningTracker(context);DiskFileItemFactory factory = new DiskFileItemFactory(DiskFileItemFactory.DEFAULT_SIZE_THRESHOLD, repository);factory.setFileCleaningTracker(fileCleaningTracker);return factory;}}

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测试页面

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<form action="servlet/UploadServlet" method="post" enctype="multipart/form-data"><input id="file1" name="file1" type="file" name="file2" type="file" name="file3" type="file" name="file4" type="file" id="submit" value="提交" /></form>

测试结果

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页面输出:

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