標籤：
將struts1檔案上傳的操作匯總了一下，包括單檔案上傳和多檔案上傳，內容如下，留作備忘：Struts2實現檔案上傳的文章（http://blog.csdn.net/itwit/article/details/7031785）
1、單檔案上傳
1）JSP頁面（singleFileUpload.jsp）
<%@page pageEncoding = "UTF-8"%><h1>檔案上傳</h1><hr /><form action="upload.action" method="post" enctype="multipart/form-data">name:<input type="text" name="name" /><br />upload:<input type="file" name="file" /><br /><input type="submit" value="上傳" /></form>
操作點：enctype="multipart/form-data"
2）Form（UploadForm）
package fileUpload.singleFileUpload.form;import org.apache.struts.action.ActionForm;import org.apache.struts.upload.FormFile;public class UploadForm extends ActionForm {private static final long serialVersionUID = 1L;private String name;private FormFile file;public String getName() {return name;}public void setName(String name) {this.name = name;}public FormFile getFile() {return file;}public void setFile(FormFile file) {this.file = file;}}
操作點：Struts1提供了一個FormFile類來處理檔案上傳操作，另外注意，屬性name，file名字必須與jsp頁面一致，否則會報null 指標。
3）Action（UploadAction）
package fileUpload.singleFileUpload.action;import java.io.FileOutputStream;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.Action;import org.apache.struts.action.ActionForm;import org.apache.struts.action.ActionForward;import org.apache.struts.action.ActionMapping;import org.apache.struts.upload.FormFile;import fileUpload.singleFileUpload.form.UploadForm;public class UploadAction extends Action {// @Overridepublic ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { UploadForm uf = (UploadForm)form; String name = uf.getName(); FormFile file = uf.getFile(); System.out.println("name=" + name); String filename = file.getFileName(); System.out.println("fileName=" + filename); FileOutputStream fos = new FileOutputStream("d:\\["+name+"]" + filename); //建立輸出資料流 fos.write(file.getFileData()); //寫入 fos.flush();//釋放 fos.close(); //關閉 return mapping.findForward("success"); }}
操作點：FormFile類的方法
4）Struts設定檔（struts-config.xml）
<!-- 配置 單個上傳 --><form-bean name="uploadForm" type="fileUpload.singleFileUpload.form.UploadForm" />
<!-- 配置 單個上傳 --><action path="/upload" type="fileUpload.singleFileUpload.action.UploadAction" name="uploadForm" scope="request"> <forward name="success" path="/singleFileUpload.jsp" /></action>
<!-- 設定檔上傳大小 --><!-- 規定了最大上傳大小是2M，如果設定成-1則大小無限制了 --><controller maxFileSize="2M" />
操作點：controller maxFileSize用來配置上傳檔案的大小，可根據實際情況配置，設定成-1則表示無限制。其位置必須放在</action-mappings>和<message-resources>之間
2、多檔案上傳
1）JSP頁面（mutityFileUpload.jsp）（從網上獲得的代碼，可增可減，不錯）
<%@ page pageEncoding="utf-8"%><%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%><html><head><title>上傳任意多個檔案（總大小不能超過2M)</title><script language="javascript"> // 在DOM中插入一個上傳檔案清單項（div元素)和一個<input type="file"/>元素 function insertNextFile(obj) { // 擷取上傳控制個數 var childnum = document.getElementById("files").getElementsByTagName("input").length; var id = childnum - 1; var fullName = obj.value; // 插入<div>元素及其子項目 var fileHtml = ‘‘; fileHtml += ‘<div id = "file_preview‘ + id + ‘" style ="border-bottom: 1px solid #CCC;">‘; fileHtml += ‘<img width =30 height = 30 src ="images/file.gif" title="‘ + fullName + ‘"/>‘; fileHtml += ‘<a href="javascript:;" onclick="removeFile(‘ + id + ‘);">刪除</a> ‘; fileHtml += fullName.substr(fullName.lastIndexOf(‘\\‘)+1) +‘ </div>‘; var fileElement = document.getElementById("files_preview"); fileElement.innerHTML = fileElement.innerHTML + fileHtml; obj.style.display = ‘none‘; // 隱藏當前的<input type=”file”/>元素 addUploadFile(childnum); // 插入新的<input type=”file”/>元素 } // 插入新的<input type=”file”/>元素，適合於不同的瀏覽器（包括IE、FireFox等） function addUploadFile(index) { try // 用於IE瀏覽器 { var uploadHTML = document.createElement( "<input type=‘file‘ id=‘file_" + index + "‘ name=‘file[" + index + "]‘ onchange=‘insertNextFile(this)‘/>"); document.getElementById("files").appendChild(uploadHTML); } catch(e) // 用於其他瀏覽器 { var uploadObj = document.createElement("input"); uploadObj.setAttribute("name", "file[" + index + "]"); uploadObj.setAttribute("onchange", "insertNextFile(this)"); uploadObj.setAttribute("type", "file"); uploadObj.setAttribute("id", "file_" + index); document.getElementById("files").appendChild(uploadObj); } } function removeFile(index) // 刪除當前檔案的<div>和<input type=”file”/>元素 { document.getElementById("files_preview").removeChild(document.getElementById("file_preview" + index)); document.getElementById("files").removeChild(document.getElementById("file_" + index)); } function showStatus(obj) // 顯示“正在上傳檔案”提示資訊 { document.getElementById("status").style.visibility="visible"; }</script></head><body><html:form enctype="multipart/form-data" action="multiUpload"><span id="files"> <%-- 在此處插入用於上傳檔案的input元素 --%> <input type="file" id="file_0" name="file[0]" onchange="insertNextFile(this)" /> </span> <html:submit value=" 上傳 " onclick="showStatus(this);" /></html:form><p><div id="status" style="visibility: hidden; color: Red">正在上傳檔案</div><p><%-- 在此處用DOM技術插入上傳檔案清單項 --%><div id="files_preview"style="width: 500px; height: 500px; overflow: auto"></div></body></html>
2）Form（UploadMoreForm）
package fileUpload.mutityFileUpload.form;import java.util.ArrayList;import java.util.List;import org.apache.struts.action.ActionForm;import org.apache.struts.upload.FormFile;public class UploadMoreForm extends ActionForm{private static final long serialVersionUID = 1L;private List<FormFile> myFiles = new ArrayList<FormFile>(); // 用於儲存不定數量的FormFile對象 public FormFile getFile(int i) // 索引屬性 { return myFiles.get(i); } public void setFile(int i, FormFile myFile) // 索引屬性 { if (myFile.getFileSize() > 0) // 只有上傳檔案的位元組數大於0，才上傳這個檔案 { myFiles.add(myFile); } } public int getFileCount() // 獲得上傳檔案的個數 { return myFiles.size(); }}
3）Action（UploadMoreAction）
package fileUpload.mutityFileUpload.action;import java.io.FileOutputStream;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.Action;import org.apache.struts.action.ActionForm;import org.apache.struts.action.ActionForward;import org.apache.struts.action.ActionMapping;import org.apache.struts.upload.FormFile;import fileUpload.mutityFileUpload.form.UploadMoreForm;public class UploadMoreAction extends Action {public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { UploadMoreForm umForm = (UploadMoreForm) form; int count = 0; try { count = umForm.getFileCount(); // 獲得上傳檔案的總數 for (int i = 0; i < count; i++) { FormFile file = umForm.getFile(i); System.out.println(file.getFileName()); FileOutputStream fos = new FileOutputStream("d:\\" + file.getFileName()); //建立輸出資料流 fos.write(file.getFileData()); //寫入 fos.flush();//釋放 fos.close(); //關閉 } } catch (Exception e) { e.printStackTrace(); } return null; }}
4）Struts設定檔（struts-config.xml）
<!-- 配置 多個上傳 --><form-bean name="uploadMoreForm" type="fileUpload.mutityFileUpload.form.UploadMoreForm" />
<!-- 配置 多個上傳 --><action path="/multiUpload" type="fileUpload.mutityFileUpload.action.UploadMoreAction" name="uploadMoreForm" scope="request"> <forward name="success" path="/mutityFileUpload.jsp" /></action>
<!-- 設定檔上傳大小 --><!-- 規定了最大上傳大小是2M，如果設定成-1則大小無限制了 --><controller maxFileSize="-1" />
Struts1檔案上傳、單檔案、多檔案上傳【Struts1】
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
