package?org.demo.tomcat;

import?java.io.File;
import?java.io.IOException;
import?java.io.PrintWriter;
import?java.util.List;

import?javax.servlet.ServletException;
import?javax.servlet.http.HttpServlet;
import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;

import?org.apache.commons.fileupload.FileItem;
import?org.apache.commons.fileupload.disk.DiskFileItemFactory;
import?org.apache.commons.fileupload.servlet.FileCleanerCleanup;
import?org.apache.commons.fileupload.servlet.ServletFileUpload;
import?org.apache.commons.io.FileCleaningTracker;

/**
?*?
?*?@author??
?*?@date????2010-12-16
?*?@file????org.demo.tomcat.UploadServlet.java
?*/
public?class?UploadServlet?extends?HttpServlet?{

	/**
	?*?
	?*/
	private?static?final?long?serialVersionUID?=?1L;

	@Override
	protected?void?doGet（HttpServletRequest?req?HttpServletResponse?resp）
			throws?ServletException?IOException?{
		this.doPost（req?resp）;
	}
	
	@SuppressWarnings（“unchecked“）
	@Override
	protected?void?doPost（HttpServletRequest?req?HttpServletResponse?resp）
			throws?ServletException?IOException?{
		
		req.setCharacterEncoding（“utf-8“）;
		resp.setCharacterEncoding（“utf-8“）;
		
		boolean?isMultipart?=?ServletFileUpload.isMultipartContent（req）;
		if?（!isMultipart）{
			System.out.println（“>>?This?wasn‘t?a?file?upload?request!“）;
			return;
		}
		
		PrintWriter?out?=?resp.getWriter（）;
		
		//?create?factory?and?file?cleanup?tracker
		FileCleaningTracker?tracker?=?FileCleanerCleanup.getFileCleaningTracker（getServletContext（））;
		File?tmpDir?=?new?File（getbaseDir（）?+?“/upload/temp“）;
		if?（!tmpDir.exists（））
			tmpDir.mkdirs（）;??//建立文件夾
		DiskFileItemFactory?factory?=?new?DiskFileItemFactory（
				DiskFileItemFactory.DEFAULT_SIZE_THRESHOLD
				tmpDir）;
		factory.setFileCleaningTracker（tracker）;
		
		//?save?upload?file?to?disk
		ServletFileUpload?upload?=?new?ServletFileUpload（factory）;
		try?{
			List?items?=?upload.parseRequest（req）;
			String?fileName?=?null;
			File?savefile?=?null;
			for?（FileItem?item?:?items）{
				if?（!item.isFormField（））{
					//?確定是文件而不是一個普通的表單字段
					fileName?=?item.getName（）;
					savefile?=?new?File（getbaseDir（）?+?“/upload/“?+?fileName）;
					item.write（savefile）;
					System.out.println（“>>?[save]?“?+?savefile.getAbsolutePath（））;

					//?to?client?info
					out.print（“fileId=“?+?savefile.getAbsolutePath（））;
					out.flush（）;
				}
			}
		}?catch?（Exception?e）?{
			System.out.println（“>>?“?+?e.getMessage（））;
			throw?new?IOException（e.getMessage（））;
		}
	}
	
	/**
	?*?Return?the?WEB-INF?directory.
	?*?@return
	?*/
	private?String?getbaseDir（）{
		return?this.getServletContext（）.getRealPath（“/WEB-INF“）;
	}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2012-10-19?17:25??SWFTest\
?????文件?????????676??2012-10-19?17:25??SWFTest\.classpath
?????文件????????1040??2010-12-17?19:17??SWFTest\.project
?????目錄???????????0??2012-10-19?17:25??SWFTest\.settings\
?????文件?????????454??2010-12-17?19:17??SWFTest\.settings\.jsdtscope
?????文件?????????330??2010-12-17?19:17??SWFTest\.settings\org.eclipse.jdt.core.prefs
?????文件?????????451??2010-12-17?19:17??SWFTest\.settings\org.eclipse.wst.common.component
?????文件?????????229??2010-12-17?19:17??SWFTest\.settings\org.eclipse.wst.common.project.facet.core.xml
?????文件??????????49??2010-12-17?19:17??SWFTest\.settings\org.eclipse.wst.jsdt.ui.superType.container
?????文件???????????6??2010-12-17?19:17??SWFTest\.settings\org.eclipse.wst.jsdt.ui.superType.name
?????目錄???????????0??2012-10-19?17:25??SWFTest\WebContent\
?????目錄???????????0??2012-10-19?17:25??SWFTest\WebContent\meta-INF\
?????文件??????????39??2010-12-17?19:17??SWFTest\WebContent\meta-INF\MANIFEST.MF
?????目錄???????????0??2012-10-19?17:25??SWFTest\WebContent\WEB-INF\
?????目錄???????????0??2012-11-05?09:28??SWFTest\WebContent\WEB-INF\classes\
?????目錄???????????0??2012-11-05?09:28??SWFTest\WebContent\WEB-INF\classes\org\
?????目錄???????????0??2012-11-05?09:28??SWFTest\WebContent\WEB-INF\classes\org\demo\
?????目錄???????????0??2012-11-05?09:28??SWFTest\WebContent\WEB-INF\classes\org\demo\tomcat\
?????文件????????3996??2012-11-05?09:28??SWFTest\WebContent\WEB-INF\classes\org\demo\tomcat\UploadServlet.class
?????目錄???????????0??2012-10-19?17:25??SWFTest\WebContent\WEB-INF\lib\
?????文件???????59590??2010-12-17?19:17??SWFTest\WebContent\WEB-INF\lib\commons-fileupload-1.2.2.jar
?????文件??????159235??2010-12-17?19:17??SWFTest\WebContent\WEB-INF\lib\commons-io-2.0.jar
?????目錄???????????0??2012-10-19?17:25??SWFTest\WebContent\WEB-INF\upload\
?????目錄???????????0??2012-11-08?17:57??SWFTest\WebContent\WEB-INF\upload\temp\
?????文件?????????851??2010-12-17?19:17??SWFTest\WebContent\WEB-INF\web.xml
?????目錄???????????0??2012-10-19?17:25??SWFTest\WebContent\flash\
?????文件???????12787??2010-12-17?19:17??SWFTest\WebContent\flash\swfupload.swf
?????目錄???????????0??2012-10-19?17:25??SWFTest\WebContent\image\
?????文件????????3191??2010-12-17?19:17??SWFTest\WebContent\image\btnBackground.png
?????文件????????1855??2010-12-17?19:17??SWFTest\WebContent\image\btnUpload.png
?????文件?????????549??2010-12-17?19:17??SWFTest\WebContent\index.jsp
............此處省略23個文件信息