java - Why no fields found -


i using org.apache.commas.*, org.apache.commas.disk.*, org.apache.commas.fileupload.servlet.* packages file uploading in jsp program , there no need of struts , working great, data worked this, when added struts 2 core libraries web project using myeclipse 8.5 not working , have no fields found. may program upload.parserequest. frankly, unable understand problem, share program too

addcategory.jsp:

<html> <head>   <meta http-equiv="refresh" content="30"> </head>  <script type="text/javascript">   function blank() {       if (document.cate.cat.value == "enter new category") {       alert(" category must not blanked !!!");       document.cate.cat.focus();       return false;     }     else if (!document.getelementbyid("file1").value) {       alert("no file selected");       return false;     }     else {       return true;     }   }  </script> <form name="cate" action="categoryadded.jsp" method="post" enctype="multipart/form-data" onsubmit="return blank()">   <table width="100%" border="0">     <tr>       <th colspan="2" scope="col">         <div align="center">create new category</div>       </th>     </tr>     <tr>       <td width="50%">         <div align="right">enter new category:</div>       </td>       <td width="50%">         <input name="cat" type="text" id="cat" value="enter new category"                onfocus="if(this.value== 'enter new category'){   this.value='' ; this.style.background='white';}"                onblur="if(this.value==''){this.value='enter new category';  this.style.background='lightyellow'}">       </td>     </tr>      <tr>       <td width="50%">         <div align="right">upload photo:</div>       </td>       <td width="50%"><input name="file1" type="file" id="file1"></td>     </tr>       <tr>       <td colspan="2">         <div align="center">           <input type="submit" name="submit" value="add category">         </div>       </td>     </tr>   </table> </form> </html>

categoryadded.jsp:

<%@ page language="java" contenttype="text/html; charset=iso-8859-1" pageencoding="iso-8859-1" %> <%@page import="java.io.*" %> <%@ page language="java" errorpage="" %> <%@ page import="java.sql.*" %> <%@ page import="org.apache.commons.io.*" %> <%@page import="java.util.iterator,java.util.list" %> <%@page import="org.apache.commons.*,org.apache.commons.fileupload.disk.*,org.apache.commons.fileupload.servlet.*" %> <%@ page import="java.util.*" %> <%@page import="org.apache.commons.fileupload.fileitemfactory" %> <%@page import="org.apache.commons.fileupload.fileitem" %> <%@page import="org.apache.commons.fileupload.fileuploadexception" %> <%@page import="p1.dbinfo" %> <%@page import="p1.identy" %> <%   string path = request.getcontextpath();   string basepath = request.getscheme() + "://" + request.getservername() + ":" + request.getserverport() + path + "/"; %> <html> <%   string pname = "";   identy id = new identy();   string cod = id.code();    boolean ismultipartcontent = servletfileupload.ismultipartcontent(request);   if (!ismultipartcontent) {     system.out.println("no multipart found");     return;   }     fileitemfactory factory = new diskfileitemfactory();   servletfileupload upload = new servletfileupload(factory);   try {     list<fileitem> fields = upload.parserequest(request);     iterator<fileitem> = fields.iterator();      if (!it.hasnext()) {       system.out.println("no fields     found");       return;     }       dbinfo obj = new dbinfo();     connection cn = obj.getconn();     preparedstatement ps = cn.preparestatement("insert category values(?,?,?)");      while (it.hasnext()) {        fileitem fileitem = it.next();        if (fileitem.getfieldname().equals("cat")) {         pname = fileitem.getstring();         system.out.println("category name " + pname);       }        boolean isformfield = fileitem.isformfield();        if (!isformfield) {         string s = fileitem.getname().substring(fileitem.getname().lastindexof("\\") + 1);          fileitem.write(new file("d:\\practice\\shoppingcart\\webroot\\images\\" + s));         system.out.println(s);         fileitem.getoutputstream().close();          ps.setstring(3, "d:\\practice\\shoppingcart\\webroot\\images\\" + s);       }     }      ps.setstring(1, pname);     ps.setstring(2, pname + cod);      int = ps.executeupdate();      if (i == 1) { %> <head>     <script type="text/javascript">     function myfunction() {         var r = confirm("new category added successfully!!!\nif want add more new category press ok!!!");       if (r == true) {          window.location = "addcategory.jsp";         }       else {         window.location = "tryy.jsp";       }      }   </script>   </head>  <body onload="myfunction()"> </body>  <%     }     cn.close();    } catch (exception e) {     e.printstacktrace();   } %> </html>

the best thing rewrite jsps remove scriptlets , move business logic action classes.

you use struts2 <s:if> , <s:else> tags render content conditionally.

the commons-fileupload default implementation uploading files in struts2, use correctly run example struts2 project struts-2-upload-multiple-files-example.


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