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struts2实现文件上传

2012-05-13 19:37 381 查看
struts2是通过调用上传框架来实现文件上传的

jsp代码：

<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
<%
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 '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">
-->

</head>

<body>
<center>
<h1>文件上传</h1>
<form action="upload.action" method="post" enctype="multipart/form-data">
<table>
<tr>
<td>用户名:</td>
<td><input type="text" name="username"></td>
</tr>
<tr>
<td>上传文件：</td>
<td><input type="file" name="myFile"></td>
</tr>
<tr>
<td><input type="submit" value="上传"></td>
<td><input type="reset"></td>
</tr>
</table>

</form>

</center>

</body>
</html>


uploadaction.java

package net.hncu.struts2.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 com.opensymphony.xwork2.ActionSupport;

public class UploadAction extends ActionSupport{
//用来封装用户名
private String username;
//myfile属性用来封装上传的文件
private File myFile;

//myFileContentType属性用来封装上传文件的类型
private String myFileContentType;
//myFileName属性用来封装上传文件的文件名
private String myFileFileName;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public File getMyFile() {
return myFile;
}
public void setMyFile(File myFile) {
this.myFile = myFile;
}
public String getMyFileContentType() {
return myFileContentType;
}
public void setMyFileContentType(String myFileContentType) {
this.myFileContentType = myFileContentType;
}
public String getMyFileFileName() {
return myFileFileName;
}
public void setMyFileFileName(String myFileName) {
this.myFileFileName = myFileName;
}

public String execute()throws Exception
{
//基于myFile创建一个文件输入流
InputStream is =new FileInputStream(myFile);
//设置上传目录
String uploadPath=ServletActionContext.getServletContext().getRealPath("/upload");
//设置目标文件
File toFile=new File(uploadPath,this.getMyFileFileName());
//创建一个输出流
OutputStream os=new FileOutputStream(toFile);
//设置缓存
byte[]buffer=new byte[1024];
int length=0;
//读取myFile文件输出到toFile文件中
while((length=is.read(buffer))>0)
{
os.write(buffer,0,length);
}
//关闭输入流
is.close();
//关闭输出流
os.close();
return SUCCESS;
}

}

还有更多的高级功能后续推出！！！


                                            

                                        

                        
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