struts2多文件上传

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<%@ page language="java" contentType="text/html; charset=utf-8"pageEncoding="utf-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <title>My JSP 'upload.jsp' starting page</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><mce:script type="text/javascript"></mce:script> </head> <body> <form action="myupload.action" method="post" enctype="multipart/form-data"> <table align="center" width="60%" border="1"> <tr> <td> 选择上传的文件: </td> <td id="more"> <input type="file" name="myFile"> <input type="button" value="增加" onclick="addMore()"/> </td> </tr> <tr> <td> </td> <td> <input type="submit" value="上传" align="center"></s:submit> </td> </tr> </table> </form> </body></html>

上传多文件时，需要动态生成文件上传表单。

如果需要制定文件上传的最大值，可以在struts.xml文件里面设置：

<constant name="struts.multipart.maxSize" value="102400000"></constant>

<action name="myupload" class="com.struts2.ManyFileAction">
<param name="savepath">/upload</param>
<result name="success" >/uploadSuc.jsp</result>
</action>

package com.struts2;import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.util.List;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionSupport;public class ManyFileAction extends ActionSupport {private static final long serialVersionUID = -3528215463223608989L;private List<File> myFile ; private List<String> myFileFileName ; private List<String> myFileContentType ; private String savepath ;public List<File> getMyFile() {return myFile;}public void setMyFile(List<File> myFile) {this.myFile = myFile;}public List<String> getMyFileFileName() {return myFileFileName;}public void setMyFileFileName(List<String> myFileFileName) {this.myFileFileName = myFileFileName;}public List<String> getMyFileContentType() {return myFileContentType;}public void setMyFileContentType(List<String> myFileContentType) {this.myFileContentType = myFileContentType;}public String getSavepath() {return savepath;}public void setSavepath(String savepath) {this.savepath = savepath;}public static long getSerialVersionUID() {return serialVersionUID;} public String execute()throws Exception{ FileInputStream fis = null ; FileOutputStream fos = null ; BufferedInputStream bis = null ; BufferedOutputStream bos = null ; savepath = ServletActionContext.getServletContext().getRealPath(savepath) ; System.out.println("路径："+savepath); int size = getMyFile().size() ; if(size!=0){ for(int i=0;i<size;i++){ fis = new FileInputStream(myFile.get(i)) ; bis = new BufferedInputStream(fis) ; byte[] tmp = new byte[bis.available()] ; fos = new FileOutputStream(new File(savepath+"//"+myFileFileName.get(i))) ; bos = new BufferedOutputStream(fos) ; int len =0 ; while((len=bis.read(tmp))!=-1){bos.write(tmp, 0, len) ; } } bis.close() ; bos.close() ; } return SUCCESS ; }}

至此，文件上传就完成了.