多文件上传
多文件上传
第一步：编写上传的页面
<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<!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">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<script type="text/javascript">
function addMore(){
var td=document.getElementById("more");
var br=document.createElement("br");
var input=document.createElement("input");
var button=document.createElement("input");
input.type="file";
input.name="file";
button.type="button";
button.value="-";
button.onclick=function(){
td.removeChild(br);
td.removeChild(input);
td.removeChild(button);
}
td.appendChild(br);
td.appendChild(input);
td.appendChild(button);
}
</script>
</head>
<body>
<s:form action="/system/fileUpload.do" method="post" enctype="multipart/form-data">
<%--此处的action应根据是否有命名空间来添加。本例子在system的命名空间下--%>
<table align="center" width="60%" border="1">
<tr>
<td>
文件名称: <input type="text" name="title"/>
</td>
</tr>
<tr>
<td>
选择上传的文件:
</td>
<td id="more">
<%--<s:file name="file" label="选择上传的文件"></s:file>--%>
<input type="file" name="file">
<input type="button" value="+" onclick="addMore()"/>
</td>
</tr>
<tr>
<td>
</td>
<td>
<s:submit value="上传" align="center"></s:submit>
</td>
</tr>
</table>
</s:form>
</body>
</html>
第二步：编写文件上传的action类
package com.pominfo.demo.system.action;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ActionContext;
import java.sql.*;
import java.text.SimpleDateFormat;
import javax.sql.*;
import javax.swing.JOptionPane;
import javax.naming.*;
import java.util.*;
import java.util.regex.Pattern;
import org.apache.struts2.ServletActionContext;///获取reqeust response session对象的包
import java.util.Date;
import java.io.*;
/*
* @author qihuasun
* FileUploadAction类 实现多文件上传
*/
public class UploadFileAction extends ActionSupport
{
private List<File> file; //文件
private String title;//文件标题
private List<String> fileFileName;//文件名称
private List<String> fileContentType; //文件类型
public List<File> getFile() {
return file;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public void setFile(List<File> file) {
this.file = file;
}
public List<String> getFileContentType() {
return fileContentType;
}
public void setFileContentType(List<String> fileContentType) {
this.fileContentType = fileContentType;
}
public List<String> getFileFileName() {
return fileFileName;
}
public void setFileFileName(List<String> fileFileName) {
this.fileFileName = fileFileName;
}
/**
* 动态上传文件
* @return
* @throws Exception
*/
public String Upload() throws Exception {
InputStream is=null;
OutputStream ops=null;
//1. 遍历文件
for(int i=0;i<file.size();i++){
try{
is=new FileInputStream(file.get(i));
//2.获取路径
String root=ServletActionContext.getRequest().getRealPath("/upload");
//将文件名称放入的根目录下的upload文件下
File destFile=new File(root+"/",this.getFileFileName().get(i));
ops=new FileOutputStream(destFile);
byte [] b=new byte[1024];
int length=0;
while((length=is.read(b))>0){
//将数据写入流
ops.write(b,0,length);
}
}catch(Exception ex){
ex.printStackTrace();
}finally{
ServletActionContext.getRequest().setAttribute("page",file.size());
is.close();
ops.close();
}
}
return "success";
}
}
第三步：配置struts。Xml文件。
<package name="system" extends="struts-default" namespace="/system" >
<action name="fileUpload" class="com.pominfo.demo.system.action.UploadFileAction" method="Upload">
<!-- 定义文件上传的过滤器 -->
<interceptor-ref name="fileUpload"><!—此处为fileUpload。与action的name值相同只是巧合 -->
<param name="allowedTypes">image/bmp,image/png,image/gif,image/jpeg,application/msword,audio/x-mpeg,text/html,text/plain</param>
<param name="maximumSize">12000000</param><!-- 设定文件的大小-->
</interceptor-ref>
<!-- 定义默认的拦截器栈 -->
<interceptor-ref name="defaultStack"></interceptor-ref>
<result name="success">/succ.jsp</result>
<result name="input">/upload.jsp</result>
<result name="error">/upload.jsp</result>
</action>
</package>