Struts文件上传

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struts.properties

######更改action访问后缀######
struts.action.extension=do
###动态方法调用
struts.enable.DynamicMethodInvocation=true
###设置上传文件临时目录####
struts.multipart.saveDir=/Users/yzk/works/Java/Servlet/apache-tomcat-6.0.48/webapps/Struts/WEB-INF/temp
###设置文件上传最大值
struts.multipart.maxSize=102400

Action

package com.struts.action.uploadfile;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.log4j.Logger;
import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

@SuppressWarnings("serial")
public class UploadFileAction extends ActionSupport {
	private Logger log = Logger.getLogger(UploadFileAction.class);
	private File file; // 上传文件内容保存到此临时文件中
	private String fileContent;
	private String fileName;

	public String execute() throws Exception {
		String root = ServletActionContext.getServletContext().getRealPath(
				"/upload");
		File saveFile = new File(root, System.currentTimeMillis() + ".jpg");
		log.info(root);
		log.info("fileContent"+fileContent);
//		log.info("fileName"+fileName);
		InputStream in = new FileInputStream(file);
		OutputStream os = new FileOutputStream(saveFile);
		byte[] bytes = new byte[512];
		int len = 0;
		while ((len = in.read(bytes)) != -1) {
			os.write(bytes, 0, len);
		}
		os.close();
		in.close();
		return SUCCESS;
	}

	public File getFile() {
		return file;
	}

	public void setFile(File file) {
		this.file = file;
	}

	public String getFileContent() {
		return fileContent;
	}

	public void setFileContent(String fileContent) {
		this.fileContent = fileContent;
	}

	public String getFileName() {
		return fileName;
	}

	public void setFileName(String fileName) {
		this.fileName = fileName;
	}

}

jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://"
			+ request.getServerName() + ":" + request.getServerPort()
			+ path + "/";
%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'uploadfile.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>
	<h1>文件上传</h1>
	<s:form action="/student/uploadfile.do" enctype="multipart/form-data"
		method="post">
		<s:file name="file" label="文件上传"></s:file>
		<s:submit value="提交"></s:submit>
	</s:form>
</body>
</html>