package?com.hello.web.servlet;

import?java.io.File;
import?java.io.FileOutputStream;
import?java.io.IOException;
import?java.io.InputStream;
import?java.text.SimpleDateFormat;
import?java.util.Date;
import?java.util.List;
import?java.util.UUID;

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.FileItemFactory;
import?org.apache.commons.fileupload.FileUploadException;
import?org.apache.commons.fileupload.disk.DiskFileItemFactory;
import?org.apache.commons.fileupload.servlet.ServletFileUpload;
import?org.apache.commons.io.FilenameUtils;

public?class?FileUploadServlet?extends?HttpServlet?{

	public?void?doGet（HttpServletRequest?request?HttpServletResponse?response）
			throws?ServletException?IOException?{
		if（ServletFileUpload.isMultipartContent（request））{
			//?Create?a?factory?for?disk-based?file?items
			DiskFileItemFactory?factory=new?DiskFileItemFactory（）;
			//?Create?a?new?file?upload?handler
			ServletFileUpload?upload=new?ServletFileUpload（factory）;
			//?一個(gè)request里面的文件上傳總共10M，還有一個(gè)是限制單個(gè)文件大小的，這是總文件大小。
			upload.setSizeMax（1024*1024*10）;
			try?{
				List?items=upload.parseRequest（request）;?
				for（FileItem?item?:?items）{
					if（item.isFormField（））{
						//?普通表單
						System.out.println（item.getFieldName（）+“:“+item.getString（））;
					}else{
						//?文件表單
						System.out.println（item.getFieldName（）+“:“+item.getName（）+“:“+item.getSize（）+“:“+item.getContentType（））;
						//?在用戶無(wú)法訪問(wèn)的meta-INF里創(chuàng)建專門放文件的目錄
						SimpleDateFormat?sdf=new?SimpleDateFormat（“yyyyMMdd“）;
						String?d=sdf.format（new?Date（））;
						String?year=d.substring（0?4）;
						String?month=d.substring（4?6）;
						String?day=d.substring（6）;
						String?path=this.getServletContext（）.getRealPath（“/WEB-INF/upload“+File.separator+year+File.separator+month+File.separator+day）;
						File?directory=new?File（path）;
						if（!directory.exists（））{
							directory.mkdirs（）;
						}
						String?filename=item.getName（）;
						if（filename!=null）{
							filename=FilenameUtils.getName（filename）;
						}
						filename=UUID.randomUUID（）+filename;
						File?file=new?File（directoryfilename）;
						//?獲得輸入流
						InputStream?is=item.getInputStream（）;
						FileOutputStream?fos=new?FileOutputStream（file）;
						int?len=0;
						byte[]?b=new?byte[1024];
						while（（len=is.read（b））!=-1）{
							fos.write（b?0?len）;
						}
					}
				}
			}?catch?（FileUploadException?e）?{
				e.printStackTrace（）;
			}
		}
	}

	public?void?doPost（HttpServletRequest?request?HttpServletResponse?response）
			throws?ServletException?IOException?{
		doGet（request?response）;
	}

}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-09-26?09:27??Day01_FileUpload\
?????文件?????????529??2016-09-26?09:27??Day01_FileUpload\.classpath
?????目錄???????????0??2016-09-26?13:52??Day01_FileUpload\.myeclipse\
?????文件?????????321??2016-09-26?09:27??Day01_FileUpload\.mymetadata
?????文件????????1759??2016-09-26?09:32??Day01_FileUpload\.project
?????目錄???????????0??2016-09-26?09:27??Day01_FileUpload\.settings\
?????文件?????????500??2016-09-26?09:27??Day01_FileUpload\.settings\.jsdtscope
?????文件?????????395??2016-09-26?09:27??Day01_FileUpload\.settings\org.eclipse.jdt.core.prefs
?????文件?????????486??2016-09-26?09:27??Day01_FileUpload\.settings\org.eclipse.wst.common.component
?????文件?????????252??2016-09-26?09:27??Day01_FileUpload\.settings\org.eclipse.wst.common.project.facet.core.xml
?????文件??????????49??2016-09-26?09:27??Day01_FileUpload\.settings\org.eclipse.wst.jsdt.ui.superType.container
?????文件???????????6??2016-09-26?09:27??Day01_FileUpload\.settings\org.eclipse.wst.jsdt.ui.superType.name
?????目錄???????????0??2016-09-26?09:27??Day01_FileUpload\WebRoot\
?????目錄???????????0??2016-09-26?09:27??Day01_FileUpload\WebRoot\meta-INF\
?????文件??????????36??2016-09-26?09:27??Day01_FileUpload\WebRoot\meta-INF\MANIFEST.MF
?????目錄???????????0??2016-09-26?09:27??Day01_FileUpload\WebRoot\WEB-INF\
?????目錄???????????0??2016-09-26?09:34??Day01_FileUpload\WebRoot\WEB-INF\classes\
?????目錄???????????0??2016-09-26?09:34??Day01_FileUpload\WebRoot\WEB-INF\classes\com\
?????目錄???????????0??2016-09-26?09:34??Day01_FileUpload\WebRoot\WEB-INF\classes\com\hello\
?????目錄???????????0??2016-09-26?09:34??Day01_FileUpload\WebRoot\WEB-INF\classes\com\hello\web\
?????目錄???????????0??2016-09-26?09:34??Day01_FileUpload\WebRoot\WEB-INF\classes\com\hello\web\servlet\
?????文件????????4317??2016-09-26?13:40??Day01_FileUpload\WebRoot\WEB-INF\classes\com\hello\web\servlet\FileUploadServlet.class
?????目錄???????????0??2016-09-26?09:34??Day01_FileUpload\WebRoot\WEB-INF\lib\
?????文件???????59590??2016-09-26?09:34??Day01_FileUpload\WebRoot\WEB-INF\lib\commons-fileupload-1.2.2.jar
?????文件??????173587??2016-09-26?09:28??Day01_FileUpload\WebRoot\WEB-INF\lib\commons-io-2.2.jar
?????文件?????????715??2016-09-26?09:29??Day01_FileUpload\WebRoot\WEB-INF\web.xml
?????文件????????1095??2016-09-26?09:32??Day01_FileUpload\WebRoot\index.jsp
?????目錄???????????0??2016-09-26?09:29??Day01_FileUpload\src\
?????目錄???????????0??2016-09-26?09:29??Day01_FileUpload\src\com\
?????目錄???????????0??2016-09-26?09:29??Day01_FileUpload\src\com\hello\
?????目錄???????????0??2016-09-26?09:29??Day01_FileUpload\src\com\hello\web\
............此處省略2個(gè)文件信息