Java version-jquery upload plugin uploadify use instance

Excerpt from: http://itindex.net/detail/47160-java-jquery-%E4%B8%8A%E4%BC%A0

Operating Effect:

Package structure diagram:

background Java logic:

Package Com.bijian.study;import Java.io.file;import Java.io.ioexception;import java.util.iterator;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.fileuploadexception;import Org.apache.commons.fileupload.disk.diskfileitemfactory;import Org.apache.commons.fileupload.servlet.ServletFileUpload, @SuppressWarnings ("Serial") public class Upload extends HttpServlet {@SuppressWarnings ("unchecked") public void DoPost (HttpServletRequest request, HttpServletResponse resp Onse) throws Servletexception, IOException {String Savepath = This.getservletconfig (). Getservletcontext (). Getrealp        Ath ("");        Savepath = Savepath + "/uploads/";        File F1 = new file (Savepath);        System.out.println (Savepath); if (!f1.exists ()) {F1.mkdirs ();        } diskfileitemfactory FAC = new Diskfileitemfactory ();        Servletfileupload upload = new Servletfileupload (FAC);        Upload.setheaderencoding ("Utf-8");        List fileList = null;        try {fileList = upload.parserequest (request);        } catch (Fileuploadexception ex) {return;        } iterator<fileitem> it = Filelist.iterator ();        String name = "";        String extname = "";            while (It.hasnext ()) {Fileitem item = It.next ();                if (!item.isformfield ()) {name = Item.getname ();                Long size = Item.getsize ();                String type = Item.getcontenttype ();                SYSTEM.OUT.PRINTLN (Size + "" + type);                if (name = = NULL | | Name.trim (). Equals ("")) {continue; }//EXTENSION format: if (Name.lastindexof (".") >= 0) {extname = name.substring (Name.lastindexof ("."));                } file file = null;                    do {//Generate file name: Name = Uuid.randomuuid (). toString ();                File = new file (Savepath + name + extname);                } while (File.exists ());                File SaveFile = new file (Savepath + name + extname);                try {item.write (saveFile);                } catch (Exception e) {e.printstacktrace ();    }}} response.getwriter (). Print (name + extname); }}

Xml:

<?xml version= "1.0" encoding= "UTF-8"? ><web-app version= "2.4"    xmlns= "HTTP://JAVA.SUN.COM/XML/NS/J2EE" Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"    xsi:schemalocation= "http://java.sun.com/xml/ns/j2ee    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd ">      <servlet>    <servlet-name>upload </servlet-name>    <servlet-class>com.bijian.study.Upload</servlet-class>  </servlet >   <servlet-mapping>    <servlet-name>upload</servlet-name>    <url-pattern>/ servlet/upload</url-pattern>  </servlet-mapping>   <welcome-file-list>    < Welcome-file>index.jsp</welcome-file>  </welcome-file-list></web-app>

INDEX.JSP:

<%@ page language= "java" contenttype= "text/html;    Charset=utf-8 "%><% String Path = Request.getcontextpath ();            String basepath = request.getscheme () + "://" + request.getservername () + ":" + request.getserverport () + path + "/";%><! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" >
 Java version-jquery upload plugin uploadify use instance