1、上传文件的页面fileUpload2.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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>My JSP 'fileUpload.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">
-->
</head>
<body>
<form action="fileUpload2.action" method="post" enctype="multipart/form-data">
username: <input type="text" name="username"><br>
file: <input type="file" name="file"><br>
file2: <input type="file" name="file"><br>
file3: <input type="file" name="file"><br>
<input type="submit" value="submit">
</form>
</body>
</html>2、UploadAction2.java用于处理上传的actionpackage com.shengsiyuan.struts2;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class UploadAction2 extends ActionSupport
{
private String username;
private List<File> file; //以List方式定义，以为是多文件上传，泛型定义为File
private List<String> fileFileName; //文件的名称
private List<String> fileContentType; //文件的类型
public String getUsername()
{
return username;
}
public void setUsername(String username)
{
this.username = username;
}
public List<File> getFile()
{
return file;
}
public void setFile(List<File> file)
{
this.file = file;
}
public List<String> getFileFileName()
{
return fileFileName;
}
public void setFileFileName(List<String> fileFileName)
{
this.fileFileName = fileFileName;
}
public List<String> getFileContentType()
{
return fileContentType;
}
public void setFileContentType(List<String> fileContentType)
{
this.fileContentType = fileContentType;
}
@Override
public String execute() throws Exception
{
for(int i = 0; i < file.size(); i++)
{
InputStream is = new FileInputStream(file.get(i)); //先定义输入流
String root = ServletActionContext.getRequest().getRealPath("/upload"); //定义上传位置
File destFile = new File(root, fileFileName.get(i)); //定义File必须的路径和名称
OutputStream os = new FileOutputStream(destFile); //定义输出流
byte[] buffer = new byte[400];
int length = 0;
while(-1 != (length = is.read(buffer)))
{
os.write(buffer, 0, length);
}
is.close();
os.close();
}
return SUCCESS;
}
}3、页面结果页fileUploadResult2.jsp<%@ 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>My JSP 'fileUploadResult2.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">
-->
</head>
<body>
username: <s:property value="username"/><br>
<s:iterator value="fileFileName" id="f">
file: <s:property value="#f.toUpperCase()"/><br>
</s:iterator>
</body>
</html>