package?control;

import?java.io.File;
import?java.io.IOException;
import?java.io.PrintWriter;
import?java.util.Date;
import?java.util.List;
import?javax.servlet.ServletConfig;
import?javax.servlet.ServletContext;
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.FileUploadException;
import?org.apache.commons.fileupload.disk.DiskFileItemFactory;
import?org.apache.commons.fileupload.servlet.ServletFileUpload;
import?entity.MyFileInfo;

/**
?*?
?*?文件上傳?具體步驟：?
?*?1）獲得磁盤文件條目工廠?DiskFileItemFactory?要導包?
?*?2）?利用?request?獲取真實路徑，供臨時文件存儲，和?最終文件存儲?，這兩個存儲位置可不同，也可相同
?*?3）對?DiskFileItemFactory?對象設置一些?屬性
?*?4）高水平的API文件上傳處理?ServletFileUpload?upload?=?newServletFileUpload（factory）;目的是調用?parseRequest（request）方法?獲得?FileItem?集合list?，
?*?5）在?FileItem?對象中?獲取信息，?遍歷，?判斷?表單提交過來的信息?是否是?普通文本信息?另做處理?
?*?6）?第一種.?用第三方提供的item.write（?new?File（pathfilename）?）;?直接寫到磁盤上?第二種.?手動處理
?*?
?*/
public?class?UploadFileServlet?extends?HttpServlet?{
	//?文件信息
	private?static?MyFileInfo?myFileInfo?=?null;
	private?static?final?long?serialVersionUID?=?1L;
	//?保存文件的目錄
	private?static?String?PATH_FOLDER?=?“/“;
	//?存放臨時文件的目錄
	private?static?String?TEMP_FOLDER?=?“/“;

	@Override
	public?void?init（ServletConfig?config）?throws?ServletException?{
		ServletContext?servletCtx?=?config.getServletContext（）;
		//?初始化路徑
		//?保存文件的目錄
		PATH_FOLDER?=?servletCtx.getRealPath（“/upload“）;
		//?存放臨時文件的目錄存放xxx.tmp文件的目錄
		TEMP_FOLDER?=?servletCtx.getRealPath（“/uploadTemp“）;
	}

	protected?void?doGet（HttpServletRequest?request?HttpServletResponse?response）
			throws?ServletException?IOException?{
		request.setCharacterEncoding（“GBK“）;?//?設置編碼
		response.setCharacterEncoding（“GBK“）;
		response.setContentType（“text/html;charset=GBK“）;
		//?獲得磁盤文件條目工廠
		DiskFileItemFactory?factory?=?new?DiskFileItemFactory（）;
		//?如果沒以下兩行設置的話，上傳大的?文件?會占用?很多內存，
		//?設置暫時存放的?存儲室??這個存儲室，可以和?最終存儲文件?的目錄不同
		/**
		?*?原理?它是先存到?暫時存儲室，然后在真正寫到?對應目錄的硬盤上，?按理來說?當上傳一個文件時，其實是上傳了兩份，第一個是以?.tem
		?*?格式的?然后再將其真正寫到?對應目錄的硬盤上
		?*/
		factory.setRepository（new?File（TEMP_FOLDER））;
		//?設置?緩存的大小，當上傳文件的容量超過該緩存時，直接放到?暫時存儲室
		factory.setSizeThreshold（1024?*?1024）;
		//?高水平的API文件上傳處理
		ServletFileUpload?upload?=?new?ServletFileUpload（factory）;
		try?{
			//?提交上來的信息都在這個list里面
			//?這意味著可以上傳多個文件
			//?請自行組織代碼
			List?list?=?upload.parseRequest（request）;
			//?獲取上傳的文件
			FileItem?item?=?getUploadFileItem（list）;
			//?獲取文件名
			String?filename?=?getUploadFileName（item）;
			//?保存后的文件名
			String?saveName?=?new?Date（）.getTime（）?+?filename.substring（filename.lastIndexOf（“.“））;
			//?保存后圖片的瀏覽器訪問路徑
			String?fileUrl?=?request.getScheme（）?+?“://“?+?request.getServerName（）?+?“:“?+?request.getServerPort（）
					+?request.getContextPath（）?+?“/upload/“?+?saveName;
			System.out.printl

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????841??2017-08-19?14:18??AjaxUploadFile\.classpath

?????文件???????1106??2017-08-19?14:47??AjaxUploadFile\.project

?????文件????????567??2017-08-19?14:18??AjaxUploadFile\.settings\.jsdtscope

?????文件????????364??2017-08-19?14:18??AjaxUploadFile\.settings\org.eclipse.jdt.core.prefs

?????文件????????494??2017-08-19?14:18??AjaxUploadFile\.settings\org.eclipse.wst.common.component

?????文件????????345??2017-08-19?14:18??AjaxUploadFile\.settings\org.eclipse.wst.common.project.facet.core.xml

?????文件?????????49??2017-08-19?14:18??AjaxUploadFile\.settings\org.eclipse.wst.jsdt.ui.superType.container

?????文件??????????6??2017-08-19?14:18??AjaxUploadFile\.settings\org.eclipse.wst.jsdt.ui.superType.name

?????文件????????374??2017-08-19?14:47??AjaxUploadFile\.tomcatplugin

?????文件???????5837??2017-08-19?15:34??AjaxUploadFile\build\classes\control\UploadFileServlet.class

?????文件???????1828??2017-08-19?15:23??AjaxUploadFile\build\classes\entity\MyFileInfo.class

?????文件???????5121??2017-08-19?15:34??AjaxUploadFile\src\control\UploadFileServlet.java

?????文件???????1343??2017-08-19?15:23??AjaxUploadFile\src\entity\MyFileInfo.java

?????文件??????93871??2017-08-19?14:37??AjaxUploadFile\WebContent\js\ajaxjquery.js

?????文件??????25773??2017-08-19?14:37??AjaxUploadFile\WebContent\js\ajaxupload.js

?????文件??????79209??2017-08-19?15:01??AjaxUploadFile\WebContent\js\jquery-1.4.2.min.js

?????文件????????578??2017-08-19?15:20??AjaxUploadFile\WebContent\js\myfileupload.js

?????文件?????????39??2017-08-19?14:18??AjaxUploadFile\WebContent\meta-INF\MANIFEST.MF

?????文件????????937??2017-08-19?15:49??AjaxUploadFile\WebContent\uploadFile.jsp

?????文件??????68622??2017-08-19?14:24??AjaxUploadFile\WebContent\WEB-INF\lib\commons-fileupload-1.3.jar

?????文件??????83613??2017-08-19?14:58??AjaxUploadFile\WebContent\WEB-INF\lib\commons-io-1.3.1.jar

?????文件????????423??2017-08-19?14:46??AjaxUploadFile\WebContent\WEB-INF\web.xml

?????目錄??????????0??2017-08-19?15:53??AjaxUploadFile\build\classes\control

?????目錄??????????0??2017-08-19?15:53??AjaxUploadFile\build\classes\entity

?????目錄??????????0??2017-08-19?15:53??AjaxUploadFile\WebContent\WEB-INF\lib

?????目錄??????????0??2017-08-19?15:53??AjaxUploadFile\build\classes

?????目錄??????????0??2017-08-19?15:53??AjaxUploadFile\src\control

?????目錄??????????0??2017-08-19?15:53??AjaxUploadFile\src\entity

?????目錄??????????0??2017-08-19?15:53??AjaxUploadFile\WebContent\js

?????目錄??????????0??2017-08-19?15:53??AjaxUploadFile\WebContent\meta-INF

............此處省略12個文件信息