JSP组件commons-fileupload实现文件上传_JSP编程_

 package servlet; import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.util.*; import java.util.regex.Pattern; import java.util.regex.Matcher; 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; public class FileUpload extends HttpServlet { private String uploadPath="E:\\addnetFile\\";//要上传文件的目录 private File tempPath=new File("E:\\tempFile\\");//存放上传的文件的目录 public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=GB2312"); response.setCharacterEncoding("gb2312"); PrintWriter out=response.getWriter(); out.println("请求内容的长度为："+request.getContentLength()); out.println("请求内容的类型为："+request.getContentType()); DiskFileItemFactory factory=new DiskFileItemFactory(); factory.setRepository(tempPath); factory.setSizeThreshold(4096); ServletFileUpload upload=new ServletFileUpload(factory); upload.setSizeMax(1000000); List fileitems=null; try{ fileitems=upload.parseRequest(request); Iterator iterator=fileitems.iterator(); String regex=".+\\\\(.+)$"; String[] errortype={".exe",".com",".cgi",".asp"}; Pattern p=Pattern.compile(regex); while(iterator.hasNext()){ FileItem item=(FileItem) iterator.next(); if(!item.isFormField()){ String name=item.getName(); long size=item.getSize(); if(name==null||name.equals("")&&size==0) continue; Matcher m=p.matcher(name); if(m.find()){ for(int temp=0;temp"); out.println("上传成功"); }catch(Exception e){ out.println("333"+e); } } else{ throw new IOException("fail to upload"); } } } }catch(IOException e){ out.println("222"+e); } catch(FileUploadException e1){ e1.printStackTrace(); out.println("111"+e1); } } public void init() throws ServletException { if(!new File(uploadPath).isDirectory()) new File(uploadPath).mkdir(); if(!tempPath.isDirectory()) tempPath.mkdir(); } public void destroy(){ super.destroy(); } } 

 文件1：
 文件2：
 文件3：

This is the description of my J2EE componentThis is the display name of my J2EE componentFileUploadservlet.FileUploadFileUpload/servlet/FileUpload