一、文件上传页面
uploadPath是相对webroot的路径，即webroot下的路径，将文件上传至该文件夹下。
代码语言：javascript复制<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() "://"
request.getServerName() ":" request.getServerPort()
path "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>上传</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">
</head>
<body>
<div id="content">
<div id="infowrap">
<div id="box">
<h3>上传excel工资表，版本为*.xls</h3>
<table>
<s:form action="file_upload" method="post"
enctype="multipart/form-data" namespace='/file'>
<s:file name="upload" label="上传的文件"></s:file>
<s:submit cssClass="submit" value="上传"></s:submit>
<s:hidden name="uploadPath" value="<span style="color:#ff0000;">files/salary</span>"></s:hidden>
</s:form>
</table>
</div>
</div>
</div>
</body>
</html>二、文件上传的action
代码语言：javascript复制package edu.qdgxy.action;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.struts2.ServletActionContext;
import edu.qdgxy.util.excel.ExcelDele;
public class FileAction extends SuperAction{
/**
*
*/
private static final long serialVersionUID = 1L;
private File upload;
private String uploadFileName;
private String uploadPath;
public String upload() throws Exception{
ExcelDele excelDele = new ExcelDele();
InputStream is=new FileInputStream(getUpload());
System.out.println(uploadPath);
String path=ServletActionContext.getServletContext().getRealPath(uploadPath);
excelDele.delFolder(path);//根据实际业务需求，执行清空文件夹
， OutputStream os=new FileOutputStream(path "/" uploadFileName);
byte buffer[]=new byte[1024];
int cnt;
while((cnt=is.read(buffer))>0){
os.write(buffer,0,cnt);
}
os.close();
is.close();
session.remove("uploadFileName");
session.put("uploadFileName", uploadFileName);
pages="excel_upload_success.jsp";
request.put("pages",pages);
return "upload";
}
public File getUpload() {
return upload;
}
public void setUpload(File upload) {
this.upload = upload;
}
public String getUploadFileName() {
return uploadFileName;
}
public void setUploadFileName(String uploadFileName) {
this.uploadFileName = uploadFileName;
}
public String getUploadPath() {
return uploadPath;
}
public void setUploadPath(String uploadPath) {
this.uploadPath = uploadPath;
}
} 三、structs.xml 配置action过滤器
代码语言：javascript复制<constant name="struts.multipart.saveDir" value="/files"></constant>
<package name="file" extends="struts-default" namespace="/file">
<action name="file_*" method="{1}" class="edu.qdgxy.action.FileAction">
<result name="upload">/pages/back/admin_frame.jsp</result>
</action>
</package>四、文件删除
代码语言：javascript复制package edu.qdgxy.util.excel;
import java.io.File;
public class ExcelDele {
public static void main(String args[]) {
ExcelDele t = new ExcelDele();
t.delFolder("E://test");
System.out.println("deleted");
}
// 删除文件夹
// param folderPath 文件夹完整绝对路径
public void delFolder(String folderPath) {
try {
delAllFile(folderPath); // 删除完里面所有内容
String filePath = folderPath;
filePath = filePath.toString();
/*
* java.io.File myFilePath = new java.io.File(filePath);
* myFilePath.delete(); //删除空文件夹
*/} catch (Exception e) {
e.printStackTrace();
}
}
// 删除指定文件夹下所有文件
// param path 文件夹完整绝对路径
public static boolean delAllFile(String path) {
boolean flag = false;
File file = new File(path);
if (!file.exists()) {
return flag;
}
if (!file.isDirectory()) {
return flag;
}
String[] tempList = file.list();
File temp = null;
for (int i = 0; i < tempList.length; i ) {
if (path.endsWith(File.separator)) {
temp = new File(path tempList[i]);
} else {
temp = new File(path File.separator tempList[i]);
}
if (temp.isFile()) {
temp.delete();
}
if (temp.isDirectory()) {
delAllFile(path "/" tempList[i]);// 先删除文件夹里面的文件
ExcelDele excelDele = new ExcelDele();
excelDele.delFolder(path "/" tempList[i]);// 再删除空文件夹
flag = true;
}
}
return flag;
}
}
