package controller; import java.io.IOException; import org.apache.struts2.ServletActionContext; import tools.State; public class GetState { public String execute() throws IOException { // 从session中取得名称为uploadState的State对象 // 这个对象里面存储的信息是当前上传的基本信息 State tempState = (State) ServletActionContext.getRequest() .getSession().getAttribute("uploadState"); // 调试:在控制台输出当前取得状态字符串的内容 System.out.println("取得的XML文件的内容为:" + tempState.getStateString()); // 设置编码为utf-8 ServletActionContext.getResponse().setCharacterEncoding("utf-8"); // 设置响应的格式为XML ServletActionContext.getResponse().setContentType("text/xml"); // 用out对象输出xml代码头 ServletActionContext.getResponse().getWriter().print( "<?xml version='1.0' encoding='" + "utf-8" + "' ?>"); // 用out对象输出xml代码体 ServletActionContext.getResponse().getWriter().print( tempState.getStateString()); return null; } }
package controller; import java.io.IOException; import upload.FileUploadTools; import com.opensymphony.xwork2.ActionSupport; public class Register extends ActionSupport { // 上传工具的引用 private FileUploadTools fileUploadTools = new FileUploadTools(); public FileUploadTools getFileUploadTools() { return fileUploadTools; } public void setFileUploadTools(FileUploadTools fileUploadTools) { this.fileUploadTools = fileUploadTools; } @Override public void validate() { } public String execute() throws IOException { // 调用beginUpload方法开始上传 fileUploadTools.beginUpload(); return "register"; } }
package tools; import java.util.ArrayList; import java.util.List; public class State { private static List state = new ArrayList(); // 从State状态类中取得状态的字符串 // 用字符串的形式拼成XML文件内容 public synchronized String getStateString() { String returnString = "<info><uploadByte>"; returnString = returnString + state.get(0) + "</uploadByte>"; returnString = returnString + "<fileSizeByte>" + state.get(1) + "</fileSizeByte>"; returnString = returnString + "<fileIndex>" + state.get(2) + "</fileIndex>"; returnString = returnString + "<percent>" + state.get(3) + "</percent></info>"; return returnString; } // 设置状态文本中的信息 // 暂时放到List中,后期将List中的数据取出来拼成XML文本内容 public synchronized void setStateString(String uploadByte, String fileSizeByte, String fileIndex) { state.add(0, uploadByte); state.add(1, fileSizeByte); state.add(2, fileIndex); // 生成当前上传进度的公式 if ((Long.valueOf(uploadByte) * 100 / Long.valueOf(fileSizeByte) < 100)) { state.add(3, Long.valueOf(uploadByte) * 100 / Long.valueOf(fileSizeByte)); } } }
package upload; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; import org.apache.commons.fileupload.ProgressListener; import tools.State; public class FileUploadListener implements ProgressListener { // 声明一个HttpSession // 目的是把State对象入到这个HttpSession中 private HttpSession session; // 构造方法 // 参数request来源于GhyJakartaMultiPartRequest.java类中的75行 public FileUploadListener(HttpServletRequest request) { super(); session = request.getSession(); } public void update(long uploadByte, long fileSizeByte, int fileIndex) { if (fileSizeByte == -1) { // 如果上传的大小为-1则上传已经完成 System.out.println("完成了"); } else { if (session.getAttribute("uploadState") == null) { // 每次执行时从session中取出uploadState对象 // 如果为空就new一个State对象并设置里面的XML状态文本内容 // 并且再次放入session中 State state = new State(); state.setStateString("" + uploadByte, "" + fileSizeByte, "" + (fileIndex - 1)); session.setAttribute("uploadState", state); } else { // 如果session中有uploadState对象 // 就取出来,然后设置里面的XML状态文本内容 // 并且再次放入session中 State state = (State) session.getAttribute("uploadState"); state.setStateString("" + uploadByte, "" + fileSizeByte, "" + (fileIndex - 1)); session.setAttribute("uploadState", state); } } } }
package upload; import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import org.apache.commons.io.FileUtils; import org.apache.struts2.ServletActionContext; public class FileUploadTools { private String username; private File uploadFile[];// 允许上传多个文件,所以是数组类型 private String uploadFileFileName[];// 允许上传多个文件,所以文件名是数组类型 private String uploadFileContentType[];// 允许上传多个文件,文件的类型是数组类型 public String[] getUploadFileContentType() { return uploadFileContentType; } public void setUploadFileContentType(String[] uploadFileContentType) { this.uploadFileContentType = uploadFileContentType; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public File[] getUploadFile() { return uploadFile; } public void setUploadFile(File[] uploadFile) { this.uploadFile = uploadFile; } public String[] getUploadFileFileName() { return uploadFileFileName; } public void setUploadFileFileName(String[] uploadFileFileName) { this.uploadFileFileName = uploadFileFileName; } public String beginUpload() throws IOException { // 开始上传 System.out.println("username的值是:" + username); // 取得上传的目录 String targetDirectory = ServletActionContext.getRequest().getRealPath( "/upload"); // 循环取得每个文件,然后依次上传 for (int i = 0; i < uploadFile.length; i++) { File target = new File(targetDirectory, new SimpleDateFormat( "yyyy_MM_dd_HH_mm_ss").format(new Date()).toString() + System.nanoTime() + uploadFileFileName[i]); FileUtils.copyFile(uploadFile[i], target); } return "register"; } }
package upload; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.Collections; import java.util.Enumeration; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.servlet.http.HttpServletRequest; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.RequestContext; import org.apache.commons.fileupload.disk.DiskFileItem; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.apache.struts2.StrutsConstants; import org.apache.struts2.dispatcher.multipart.MultiPartRequest; import com.opensymphony.xwork2.inject.Inject; import com.opensymphony.xwork2.util.logging.Logger; import com.opensymphony.xwork2.util.logging.LoggerFactory; /** * Multipart form data request adapter for Jakarta Commons Fileupload package. */ public class GhyJakartaMultiPartRequest implements MultiPartRequest { static final Logger LOG = LoggerFactory.getLogger(MultiPartRequest.class); // maps parameter name -> List of FileItem objects protected Map<String, List<FileItem>> files = new HashMap<String, List<FileItem>>(); // maps parameter name -> List of param values protected Map<String, List<String>> params = new HashMap<String, List<String>>(); // any errors while processing this request protected List<String> errors = new ArrayList<String>(); protected long maxSize; @Inject(StrutsConstants.STRUTS_MULTIPART_MAXSIZE) public void setMaxSize(String maxSize) { this.maxSize = Long.parseLong(maxSize); } /** * Creates a new request wrapper to handle multi-part data using methods * adapted from Jason Pell's multipart classes (see class description). * * @param saveDir * the directory to save off the file * @param request * the request containing the multipart * @throws java.io.IOException * is thrown if encoding fails. */ public void parse(HttpServletRequest request, String saveDir) throws IOException { try { processUpload(request, saveDir); } catch (FileUploadException e) { LOG.warn("Unable to parse request", e); errors.add(e.getMessage()); } } private void processUpload(HttpServletRequest request, String saveDir) throws FileUploadException, UnsupportedEncodingException { for (FileItem item : parseRequest(request, saveDir)) { if (LOG.isDebugEnabled()) { LOG.debug("Found item " + item.getFieldName()); } if (item.isFormField()) { processNormalFormField(item, request.getCharacterEncoding()); } else { processFileField(item); } } } private void processFileField(FileItem item) { LOG.debug("Item is a file upload"); // Skip file uploads that don't have a file name - meaning that no file // was selected. if (item.getName() == null || item.getName().trim().length() < 1) { LOG.debug("No file has been uploaded for the field: " + item.getFieldName()); return; } List<FileItem> values; if (files.get(item.getFieldName()) != null) { values = files.get(item.getFieldName()); } else { values = new ArrayList<FileItem>(); } values.add(item); files.put(item.getFieldName(), values); } private void processNormalFormField(FileItem item, String charset) throws UnsupportedEncodingException { LOG.debug("Item is a normal form field"); List<String> values; if (params.get(item.getFieldName()) != null) { values = params.get(item.getFieldName()); } else { values = new ArrayList<String>(); } // note: see http://jira.opensymphony.com/browse/WW-633 // basically, in some cases the charset may be null, so // we're just going to try to "other" method (no idea if this // will work) if (charset != null) { values.add(item.getString(charset)); } else { values.add(item.getString()); } params.put(item.getFieldName(), values); } // 高洪岩改动parseRequest方法 private List<FileItem> parseRequest(HttpServletRequest servletRequest, String saveDir) throws FileUploadException { DiskFileItemFactory fac = createDiskFileItemFactory(saveDir); ServletFileUpload upload = new ServletFileUpload(fac); upload.setProgressListener(new FileUploadListener(servletRequest));// :) upload.setSizeMax(maxSize); return upload.parseRequest(createRequestContext(servletRequest)); } private DiskFileItemFactory createDiskFileItemFactory(String saveDir) { DiskFileItemFactory fac = new DiskFileItemFactory(); // Make sure that the data is written to file fac.setSizeThreshold(0); if (saveDir != null) { fac.setRepository(new File(saveDir)); } return fac; } /* * (non-Javadoc) * * @seeorg.apache.struts2.dispatcher.multipart.MultiPartRequest# * getFileParameterNames() */ public Enumeration<String> getFileParameterNames() { return Collections.enumeration(files.keySet()); } /* * (non-Javadoc) * * @see * org.apache.struts2.dispatcher.multipart.MultiPartRequest#getContentType * (java.lang.String) */ public String[] getContentType(String fieldName) { List<FileItem> items = files.get(fieldName); if (items == null) { return null; } List<String> contentTypes = new ArrayList<String>(items.size()); for (FileItem fileItem : items) { contentTypes.add(fileItem.getContentType()); } return contentTypes.toArray(new String[contentTypes.size()]); } /* * (non-Javadoc) * * @see * org.apache.struts2.dispatcher.multipart.MultiPartRequest#getFile(java * .lang.String) */ public File[] getFile(String fieldName) { List<FileItem> items = files.get(fieldName); if (items == null) { return null; } List<File> fileList = new ArrayList<File>(items.size()); for (FileItem fileItem : items) { fileList.add(((DiskFileItem) fileItem).getStoreLocation()); } return fileList.toArray(new File[fileList.size()]); } /* * (non-Javadoc) * * @see * org.apache.struts2.dispatcher.multipart.MultiPartRequest#getFileNames * (java.lang.String) */ public String[] getFileNames(String fieldName) { List<FileItem> items = files.get(fieldName); if (items == null) { return null; } List<String> fileNames = new ArrayList<String>(items.size()); for (FileItem fileItem : items) { fileNames.add(getCanonicalName(fileItem.getName())); } return fileNames.toArray(new String[fileNames.size()]); } /* * (non-Javadoc) * * @see * org.apache.struts2.dispatcher.multipart.MultiPartRequest#getFilesystemName * (java.lang.String) */ public String[] getFilesystemName(String fieldName) { List<FileItem> items = files.get(fieldName); if (items == null) { return null; } List<String> fileNames = new ArrayList<String>(items.size()); for (FileItem fileItem : items) { fileNames.add(((DiskFileItem) fileItem).getStoreLocation() .getName()); } return fileNames.toArray(new String[fileNames.size()]); } /* * (non-Javadoc) * * @see * org.apache.struts2.dispatcher.multipart.MultiPartRequest#getParameter * (java.lang.String) */ public String getParameter(String name) { List<String> v = params.get(name); if (v != null && v.size() > 0) { return v.get(0); } return null; } /* * (non-Javadoc) * * @see * org.apache.struts2.dispatcher.multipart.MultiPartRequest#getParameterNames * () */ public Enumeration<String> getParameterNames() { return Collections.enumeration(params.keySet()); } /* * (non-Javadoc) * * @see * org.apache.struts2.dispatcher.multipart.MultiPartRequest#getParameterValues * (java.lang.String) */ public String[] getParameterValues(String name) { List<String> v = params.get(name); if (v != null && v.size() > 0) { return v.toArray(new String[v.size()]); } return null; } /* * (non-Javadoc) * * @see org.apache.struts2.dispatcher.multipart.MultiPartRequest#getErrors() */ public List getErrors() { return errors; } /** * Returns the canonical name of the given file. * * @param filename * the given file * @return the canonical name of the given file */ private String getCanonicalName(String filename) { int forwardSlash = filename.lastIndexOf("/"); int backwardSlash = filename.lastIndexOf("\\"); if (forwardSlash != -1 && forwardSlash > backwardSlash) { filename = filename.substring(forwardSlash + 1, filename.length()); } else if (backwardSlash != -1 && backwardSlash >= forwardSlash) { filename = filename.substring(backwardSlash + 1, filename.length()); } return filename; } /** * Creates a RequestContext needed by Jakarta Commons Upload. * * @param req * the request. * @return a new request context. */ private RequestContext createRequestContext(final HttpServletRequest req) { return new RequestContext() { public String getCharacterEncoding() { return req.getCharacterEncoding(); } public String getContentType() { return req.getContentType(); } public int getContentLength() { return req.getContentLength(); } public InputStream getInputStream() throws IOException { InputStream in = req.getInputStream(); if (in == null) { throw new IOException("Missing content in the request"); } return req.getInputStream(); } }; } }
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <package name="struts3.1" extends="struts-default"> <action name="register" class="controller.Register"> <result name="register">/showregister.jsp</result> <result name="input">/register.jsp</result> </action> <action name="getState" class="controller.GetState"></action> </package> <bean type="org.apache.struts2.dispatcher.multipart.MultiPartRequest" name="GhyJakartaMultiPartRequestRef" class="upload.GhyJakartaMultiPartRequest" scope="default" /> <constant name="struts.multipart.handler" value="GhyJakartaMultiPartRequestRef" /> <constant name="struts.ui.theme" value="simple"></constant> </struts>
struts.multipart.maxSize=2048000000 struts.multipart.saveDir=/tempUploadFile
<%@ page language="java" import="java.util.*" pageEncoding="utf-8" %> <%@ page isELIgnored="false" %> <%@ taglib uri="/struts-tags" prefix="s" %> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>多文件上传实例</title> <style type="text/css"> <!-- body, td, th { font-size: 9pt; } --> </style> <script src="jquery/jquery-1.3.2.js"> </script> <script type="text/javascript"> function showprocessorBar(){ //上传时显示进度条 //该方法被submitForm()调用 $.get("getState.action?timestamp=" + new Date().getTime(), function(date){ processorBarCallBack(); }); } function processorBarCallBack(){ //showprocessorBar方法的回调 setTimeout("reshowprocessorBar()", 1000); } function reshowprocessorBar(){//定时调用这个显示进度的function $.get("getState.action?timestamp=" + new Date().getTime(), function(data){ reprocessorBarCallBack(data); }, 'xml'); } function reprocessorBarCallBack(returnXMLParam){//回调一下:) var returnXML = returnXMLParam; var percene = $(returnXML).find('percent').text() var showText = "进度是:" + $(returnXML).find('percent').text(); showText = showText + "\n当前上传文件大小为:" + $(returnXML).find ('uploadByte').text(); showText = showText + "\n上传文件总大小为:" + $(returnXML).find ('fileSizeByte').text(); showText = showText + "\n当前上传文件为第:" + $(returnXML).find ('fileIndex').text() + "个"; //清空id为progr的DIV里面的数据,然后再添加 $('#progr').empty(); $('#progr').text(showText); var jidutiao = $('#jidutiao'); //设置进度条的长度 if ((100 - parseInt(percene)) > 0) { $('#jidutiao').css('width', 100 - parseInt(percene) + "%"); } else { $('#jidutiao').css('width', "100%"); } setTimeout("reshowprocessorBar()", 1000); } //////////////////////////////// var a = 0; function file_change(){ //当文本域中的值改变时触发此方法 var postfix = this.value.substring(this.value.lastIndexOf(".") + 1).toUpperCase(); //判断扩展是否合法 if (postfix == "JPG" || postfix == "GIF" || postfix == "PNG" || postfix == "BMP" || postfix == "RAR" || postfix == "ZIP" || postfix == "TXT" || postfix == "GHO" || postfix == "PDF") { } else { //如果不合法就删除相应的File表单及br标签 alert("您上传的文件类型不被支持,本系统只支持JPG,GIF,PNG,BMP,RAR,ZIP,TXT文件!"); var testtest = $(this).attr('id'); testtest = '#' + testtest; var sub_file = $(testtest); var next_a_ele = sub_file.next();//取得a标记 var br1_ele = $(next_a_ele).next();//取得回车 var br2_ele = $(br1_ele).next();//取得回车 $(br2_ele).remove();//删除回车 $(br1_ele).remove();//删除回车 $(next_a_ele).remove();//删除a标签 $(sub_file).remove(); //删除文本域,因为上传的文件类型出错,要删除动态创建的File表单 return; } } function remove_file(){//删除File表单域的方法 //删除表单 var testtest = $(this).val(); testtest = '#' + testtest; var sub_file = $(testtest); var next_a_ele = sub_file.next();//取得a标记 var br1_ele = $(next_a_ele).next();//取得回车 var br2_ele = $(br1_ele).next();//取得回车 $(br2_ele).remove();//删除回车 $(br1_ele).remove();//删除回车 $(next_a_ele).remove();//删除a标签 $(sub_file).remove();//删除File标记 } function f(){ //方法名为f的主要作用是不允许在File表单域中手动输入文件名,必须单击“浏览”按钮 return false; } function insertFile(){ //新建File表单 var file_array = document.getElementsByTagName("input"); var is_null = false; //循环遍历判断是否有某一个File表单域的值为空 for (var i = 0; i < file_array.length; i++) { if (file_array[i].type == "file" && file_array[i].name.substring(0, 15) == "fileUploadTools") { if (file_array[i].value == "") { alert("某一附件为空不能继续添加"); is_null = true; break; } } } if (is_null) { return; } a++; //新建file表单的基本信息 var new_File_element = $('<input>'); new_File_element.attr('type', 'file'); new_File_element.attr('id', 'uploadFile' + a); new_File_element.attr('name', 'fileUploadTools.uploadFile'); new_File_element.attr('size', 55); new_File_element.keydown(f); new_File_element.change(file_change); $('#fileForm').append(new_File_element); //新建删除附件的a标签的基本信息 var new_a_element = $('<a>'); new_a_element.html("删除附件"); new_a_element.attr('id', "a_" + new_File_element.name); new_a_element.attr('name', "a_" + new_File_element.name); new_a_element.val($(new_File_element).attr('id')); new_a_element.attr('href', "#"); new_a_element.click(remove_file); $('#fileForm').append(new_a_element); var new_br_element = $("<br>"); $('#fileForm').append(new_br_element); var new_br_element = $("<br>"); $('#fileForm').append(new_br_element); } function submitForm(){ setTimeout("showprocessorBar()", 2000); return true; } </script> </head> <body> <div id="progr"> </div> <br/> <s:form action="register" method="post" enctype="multipart/form-data" onsubmit= "return submitForm()"> <table width="818" border="1"> <tr> <td width="176"> <div align="center"> 用户账号 </div> </td> <td width="626"> <input type="text" name="username" /> </td> </tr> <tr> <td> <div align="center"> 用户附件 <br/> <a href="javascript:insertFile()">添加附件</a> </div> </td> <td id="fileForm"> <br/> </td> </tr> </table> <input type="submit" value="submit this form" /> </s:form> <br/> <table width="220" border="0" cellpadding="0" cellspacing="0" background= "ajax-loader.gif"> <!--DWLayoutTable--> <tr> <td width="10" height="21" valign="top"> <table width="100%" border="0" cellpadding="0" cellspacing="0"> <!--DWLayoutTable--> <tr> <td width="10" height="21" bgcolor="#FFFFFF"> </td> </tr> </table> </td> <td width="200"> <div align="right"> <div id="jidutiao" style="background-color: #FFFFFF; width: 100%; height: 100%"> </div> </div> </td> <td width="10" valign="top"> <table width="100%" border="0" cellpadding="0" cellspacing="0"> <!--DWLayoutTable--> <tr> <td width="10" height="21" bgcolor="#FFFFFF"> </td> </tr> </table> </td> </tr> </table> </body> </html>