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How to Terminate JSP Process

How to Terminate JSP Process

use:
out.close();

How to put single quotes in excel

How to put single quotes in excel


use ="'" & " " & "'"

How to generate .XLS file in Java using Apache POI

How to generate .XLS file in Java using Apache POI


String contextName = request.getContextPath().substring(1);
HttpSession hs = request.getSession();
String path = hs.getServletContext().getRealPath("/" + contextName);
char pathSep = new File(path).separatorChar;
path = path.substring(0, path.lastIndexOf(pathSep + contextName));
path = path + pathSep;
 //String filename = "c:\\Send\\text.xls";
String filename = path+"text.xls";
HSSFWorkbook hwb = new HSSFWorkbook();
HSSFSheet sheet = hwb.createSheet("new sheet");
int width = 30;
sheet.setAutobreaks(true);
sheet.setDefaultColumnWidth(width);
HSSFRow rowhead = sheet.createRow((short) 0);
rowhead.createCell((int) 0).setCellValue("SR No.");
rowhead.createCell((int) 1).setCellValue("Name");
rowhead.createCell((int) 2).setCellValue("Code");
rowhead.createCell((int) 3).setCellValue("Salary");
rowhead.createCell((int) 4).setCellValue("City");
rowhead.createCell((int) 5).setCellValue("State");
int i = 0,index=0;
for(i=0;i<6;i++) {
            index++;
            HSSFRow row = sheet.createRow((short) index);
            row.createCell((int) 0).setCellValue(index);
            row.createCell((int) 1).setCellValue("Name -- "+index);
            row.createCell((int) 2).setCellValue("12345 -- "+index);
            row.createCell((int) 3).setCellValue("4500"+index);
            row.createCell((int) 4).setCellValue("City -- "+index);
            row.createCell((int) 5).setCellValue("State -- "+index);
}
       
FileOutputStream fileOut = new FileOutputStream(filename);
hwb.write(fileOut);
fileOut.close();
String disHeader = "Attachment;Filename=\"Report.xls\"";
response.setHeader("Content-Disposition", disHeader);
File desktopFile = new File(filename);
PrintWriter pw = response.getWriter();
FileInputStream fileInputStream = new FileInputStream(desktopFile);
int j;
//pw.flush();
while ((j = fileInputStream.read()) != -1) {
            pw.write(j);
}
fileInputStream.close();
response.flushBuffer();
pw.flush();

pw.close();


How to generate .XLSX file in Java using Apache POI

How to generate .XLSX file in Java using Apache POI


First you need to download from apache site:
Extract zip file and copy listed below file in you Libraries folder under NetBeans.
1)      poi-3.9-20121203.jar
2)      poi-examples-3.9-20121203.jar
3)      poi-excelant-3.9-20121203.jar
4)      poi-ooxml-3.9-20121203.jar
5)      poi-ooxml-schemas-3.9-20121203.jar
6)      poi-scratchpad-3.9-20121203.jar
7)      xmlbeans-2.3.0.jar
8)      dom4j-1.6.1.jar

Create “excel.jsp” as listed below file:
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Excel Page</title>
    </head>
    <body>
        <h1>Excel!</h1>
        <form name="excelform" id="excelform"  action="/MyTest/TestExcel"   method="post">
            <input type="submit" value="submit"/>
        </form>    
    </body>
</html>


Create a servlet “TestExcel.java” as listed below file:
import java.io.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class TestExcel extends HttpServlet {
    //Processes requests for both HTTP
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        PrintWriter out = response.getWriter();
        String contextName = request.getContextPath().substring(1);
        HttpSession hs = request.getSession();
        String path = hs.getServletContext().getRealPath("/" + contextName);
       
        char pathSep = new File(path).separatorChar;
        path = path.substring(0, path.lastIndexOf(pathSep + contextName));
        path = path + pathSep;
        //String filename = "c:\\Send\\text.xlsx";
        String filename = path+"text.xlsx";
        String sheetName = "Sheet1";
        XSSFWorkbook wb= new XSSFWorkbook();
        XSSFSheet sheet = wb.createSheet(sheetName) ;
        int width = 30;
        sheet.setAutobreaks(true);
        sheet.setDefaultColumnWidth(width);
       
        XSSFRow rowHead = sheet.createRow((short) 0);
        rowHead.createCell((int) 0).setCellValue("SR No.");
        rowHead.createCell((int) 1).setCellValue("Name");
        rowHead.createCell((int) 2).setCellValue("Code");
        rowHead.createCell((int) 3).setCellValue("Salary");
        rowHead.createCell((int) 4).setCellValue("City");
        rowHead.createCell((int) 5).setCellValue("State");
       
        int i = 0,index=0;
        for(i=0;i<6;i++) {
            index++;
            XSSFRow row = sheet.createRow((short) index);
            row.createCell((int) 0).setCellValue(index);
            row.createCell((int) 1).setCellValue("Name -- "+index);
            row.createCell((int) 2).setCellValue("12345 -- "+index);
            row.createCell((int) 3).setCellValue("4500"+index);
            row.createCell((int) 4).setCellValue("City -- "+index);
            row.createCell((int) 5).setCellValue("State -- "+index);
        }
        FileOutputStream fileOut = new FileOutputStream(filename);
        wb.write(fileOut);
        fileOut.close();
        String disHeader = "Attachment;Filename=\"Report.xlsx\"";
        response.setHeader("Content-Disposition", disHeader);
        File desktopFile = new File(filename);
        PrintWriter pw = response.getWriter();
        FileInputStream fileInputStream = new FileInputStream(desktopFile);
        int j;
        //pw.flush();
        while ((j = fileInputStream.read()) != -1) {
            pw.write(j);
        }
        fileInputStream.close();
        response.flushBuffer();
        pw.flush();
        pw.close();
       
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    @Override
    public String getServletInfo() {
        return "Short description";
    }

}












Html to pdf in java struts.

Html to pdf in java struts.


import com.lowagie.text.Document;
import com.lowagie.text.Element;
import com.lowagie.text.PageSize;
import com.lowagie.text.html.simpleparser.HTMLWorker;
import com.lowagie.text.html.simpleparser.StyleSheet;
import com.lowagie.text.pdf.PdfWriter;
import com.lowagie.text.pdf.codec.Base64;

import java.util.ArrayList;
import java.io.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServlet;
import java.sql.*;
import java.text.SimpleDateFormat;
import java.util.*;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForward;
import org.apache.struts.validator.DynaValidatorForm;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import plugins.HibernateSessionFactory;


String contextName = request.getContextPath().substring(1);
HttpSession hs = request.getSession();
String path = hs.getServletContext().getRealPath("/" + contextName);

char pathSep = new File(path).separatorChar;

path = path.substring(0, path.lastIndexOf(pathSep + contextName));
path = path + pathSep + "MyForms";


Document pdfDoc = new Document(PageSize.A4, 50, 50, 1, 50);
Reader htmlReader = new BufferedReader(new InputStreamReader(new FileInputStream(path+"\\newRegistrn.html")));
ByteArrayOutputStream byteAOS = new ByteArrayOutputStream();
PdfWriter.getInstance(pdfDoc, byteAOS);
pdfDoc.open();
StyleSheet stylez = new StyleSheet();
stylez.loadTagStyle("body", "font", "Tahoma");
ArrayList arrayElementList = HTMLWorker.parseToList(htmlReader, stylez);
for (int i = 0; i < arrayElementList.size(); ++i) {
    Element e = (Element) arrayElementList.get(i);
    pdfDoc.add(e);
}
pdfDoc.close();
       
DateFormat dff = new SimpleDateFormat("dd_MMMM_yyyy");
DateFormat tf = new SimpleDateFormat("hhmmss");
String dateString = dff.format(new java.util.Date());
String timeString = tf.format(new java.util.Date());
String pdfStoredFileName = "\\newRegistrn_" + dateString + timeString + "__" + ".pdf";

byte[] byt = byteAOS.toByteArray();
String pdfBase64 = Base64.encodeBytes(byt);
File pdfFile = new File(path+pdfStoredFileName);
FileOutputStream out = new FileOutputStream(pdfFile);
out.write(byt);
out.close();
htmlReader.close();



String fileToDownload =pdfStoredFileName;
String disHeader = "Attachment;Filename=" + fileToDownload;
response.setHeader("Content-Disposition", disHeader);
File desktopFile = new File(path+pdfStoredFileName);
PrintWriter pw = response.getWriter();
FileInputStream fileInputStream = new FileInputStream(desktopFile);
int j;
pw.flush();
while ((j = fileInputStream.read()) != -1) {
   pw.write(j);
}
fileInputStream.close();
response.flushBuffer();
pw.flush();
pw.close();

File fileToDel = new File(path+pdfStoredFileName);
  if(fileToDel.delete()){
    System.out.println("\n "+fileToDel.getName() + " is deleted!");
  } else {
    System.out.println("\n Delete operation is failed.");
  }







image quality in iTextSharp

How to improve image quality in iTextSharp.

I was working in question paper project. in this project I need to generate PDF file from images. but when I generated the PDF file, image's quality was so bad. so to overcome this problem I have used listed below code.


 System.Drawing.Image image = System.Drawing.Image.FromFile("myimage.jpg");
 iTextSharp.text.Document doc = new iTextSharp.text.Document(PageSize.A4);
 doc.Open();
 doc.Add(new Paragraph(""));
 PdfWriter.GetInstance(doc, new FileStream("my.pdf", FileMode.Create));
 iTextSharp.text.Image pdfImage = iTextSharp.text.Image.GetInstance(image, System.Drawing.Imaging.ImageFormat.Jpeg);
pdfImage.ScalePercent(50f);
doc.Add(pdfImage);
doc.Close();

Accept only numeric character with BACKSPACE and TAB button facility

Accept only numeric character with BACKSPACE and TAB button facility.

When you enter some numeric value in age or amount like textbox then you not need to enter any other character. there are lot of script available in the internet about this. but they don't support BACKSPACE and TAB button facility. here are listed below code will support BACKSPACE and TAB button facility.

Enter Roll Number only in numeric charactes:
<input type="text" id="roll" name="roll" onkeypress="checkNumeric(event);" />
<script>
function checkNumeric(e) {
    if (window.event) { // IE
        if(e.keyCode==13 || e.keyCode==0 || e.keyCode==8)  {
            event.returnValue = true;
            return true;
        }
        if ((e.keyCode < 48 || e.keyCode > 57) & e.keyCode != 8) {
            event.returnValue = false;
            return false;
        }
    } else { // FF
           if(e.which==13 || e.which==0 || e.which==8)  {
            return true;
        }
        if ((e.which < 48 || e.which > 57) & e.which != 8) {
            e.preventDefault();
            return false;
        }
    }
}  
</script>

Post multiple and return values from JSON in JSP

JSON is very lightweight than XML. Here is the some hard JSON example with multiple values post and
multiple return values.
I have used "json-simple-1.1.1.jar" , so you need to download it.

index.jsp
---------------------
<%@ page import="org.json.JSONObject"%>
<%@ page import="java.io.PrintWriter"%>
<script src="jquery-1.10.2.js" type="text/javascript"></script>
<input type="button" value="send" onclick="dook();"/>
<script>
function dook() {
    var article = new Object();
    article.title = "Title Name";
    article.url = "Url Name";
    article.categories ="Categories  Name";
    article.tags = "Tags Name";
    var jsonobj=JSON.stringify(article);
    $.ajax({
        data: {para:jsonobj},
        dataType: 'json',
        url: 'newjsp1.jsp',
        type: 'POST',
        success: function(jsonObj){
            alert(jsonObj.title);
            alert(jsonObj.url);
            alert(jsonObj.categories);
            alert(jsonObj.tags);
            alert(jsonObj.rate); 
        },
        error: function() {
            alert('readyState: '+xhr.readyState+'\nstatus: '+xhr.status + ' ' + err);
        }
    });
}
</script>



newjsp1.jsp
=======================
<%@ page import="java.io.PrintWriter"%>
<%@ page import="org.json.simple.JSONObject"%>
<%@ page import="org.json.simple.JSONValue"%>
<%
request.setCharacterEncoding("utf8");
response.setContentType("application/json");
PrintWriter outt = response.getWriter();
JSONObject jsonObj = (JSONObject) JSONValue.parse(request.getParameter("para"));
String title=jsonObj.get("title").toString();
String url=jsonObj.get("url").toString();
String categories=jsonObj.get("categories").toString();
String tags=jsonObj.get("tags").toString();
String rate="450.00";
System.out.println(jsonObj.get("title"));
JSONObject obj = new JSONObject();
obj.put("title", title);
obj.put("url", url);
obj.put("categories", categories);
obj.put("tags", tags);
obj.put("rate", rate);
out.print(obj);
%>



Simple JSON in JSP

Simple JSON in JSP

JSON is very lightweight than XML.Here is the simple example of JSON with java.
I have used "json-simple-1.1.1.jar" , so you need to download it.

index.jsp
---------------------
<%@ page import="org.json.JSONObject"%>
<%@ page import="javax.json.Json"%>
<%@ page import="java.io.PrintWriter"%>
<script src="jquery-1.10.2.js" type="text/javascript"></script>
<input type="button" value="send" onclick="dook();"/>
<script>
function dook() {
    var datas = ({"msg":'Test Message'});
    var jsonobj=JSON.stringify(datas);
    $.ajax({
        data: {para:jsonobj},
        dataType: 'json',
        url: 'newjsp.jsp',
        type: 'POST',
        success: function(ans){
            alert(ans.res);    
        },
        error: function() {
            alert('Ajax readyState: '+xhr.readyState+'\nstatus: '+xhr.status + ' ' + err);
        }
    });
}
</script>


newjsp.jsp
-------------------
<%@ page import="java.io.PrintWriter"%>
<%@ page import="org.json.simple.JSONObject"%>
<%@ page import="org.json.simple.JSONValue"%>
<%
request.setCharacterEncoding("utf8");
response.setContentType("application/json");
PrintWriter outt = response.getWriter();
JSONObject jsonObj = (JSONObject) JSONValue.parse(request.getParameter("para"));
System.out.println(jsonObj.get("msg"));
JSONObject obj = new JSONObject();
obj.put("res", "hello...");
out.print(obj);
%>


Show records without class in hibernate and struts

Show all records without pojo class in hibernate and struts

Struts and Hibernate if you need to show all records from database table then you need to create a pojo class...in some cases you not need to use pojo class then how can you achieve to show all records? I have faced the same problem and overcome it with listed below code.


In query.hbm.xml file
<sql-query name="TestTestTest">
select user_name, user_id, password, cd, user_status,CAST(from_dt AS CHAR) as from_date from user_info
</sql-query>

In your action class

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.*;
import java.util.Date;
import java.text.DateFormat;
import java.text.SimpleDateFormat;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForward;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.*;
import plugins.HibernateSessionFactory;

Session ssn = null;
ssn = HibernateSessionFactory.getSession();
ssn.setCacheMode(CacheMode.GET);
Query qry = ssn.getNamedQuery("TestTestTest");
List <Object[]>containerResults = qry.list();
for(java.lang.Object[] result : containerResults) {
    System.out.print("\n"+result[0]+"======"+result[1]+"======"+result[2]+"======"+result[3]+"======"+result[4]+"======"+result[5]);
}

ALTERNATE OF OR ANY OTHER LOGIC TAG IN STRUTS

ALTERNATE OF <logic:equal> OR ANY OTHER LOGIC TAG IN STRUTS
----------------------------------------------------------------------------------------
We need to write very much <logic:equal name> if there are lot of if conditions in you page...so how we use native if condition in struts. I have faced the same problem and find the solution. the solution is in listed below code.


=======================================================
Using  <logic:equal name> 

<logic:notEmpty name="myProductList" scope="request">
<table>
<logic:iterate id="prodIterateId" name="myProductList">
<tr>
    <logic:equal name="prodIterateId" property="catId" value="1">
        <td  align="center"><html:text name="prodIterateId" property="catId" value="DESKTOP COMPUTER"/></td>
    </logic:equal>
    <logic:equal name="prodIterateId" property="catId" value="2">
        <td align="center"><html:text name="prodIterateId" property="catId" value="LAPTOP"/></td>
    </logic:equal>
    <logic:equal name="prodIterateId" property="catId" value="3">
        <td  align="center"><html:text name="prodIterateId" property="catId" value="PAMTOP"/></td>
    </logic:equal>
     <logic:equal name="prodIterateId" property="catId" value="4">
        <td  align="center"><html:text name="prodIterateId" property="catId" value="PAD"/></td>
    </logic:equal>
        <td  align="center"><html:text name="prodIterateId" property="productName" readonly="true" size="33"/></td>
        <td  align="center"><html:text name="prodIterateId" property="productPrice" readonly="true" size="33"/></td>
        <td  align="center"><html:text name="prodIterateId" property="productCode" readonly="true" size="33"/></td>
    </tr>
    </logic:iterate>
    </table>
</logic:notEmpty>
============================================================

Using native IF condition

<logic:notEmpty name="myProductList" scope="request">
<table>
    <logic:iterate id="prodIterateId" name="myProductList">
        <tr>
            <bean:define id="catId_Value" name="prodIterateId" property="catId"  type="java.lang.Integer" />
            <%
                int c_id=catId_Value.intValue();
                String cat_Name="";
                if(c_id==1) {cat_Name="DESKTOP COMPUTER";}
                if(c_id==2) {cat_Name="LAPTOP"; }
                if(c_id==3) {cat_Name="PAMTOP"; }
                if(c_id==4) {cat_Name="PAD"; }
            %>
        <td  align="center"><html:text name="prodIterateId" property="catId" value="<%=cat_Name%>"/></td>
        <td  align="center"><html:text name="prodIterateId" property="productName" readonly="true" size="33"/></td>
        <td  align="center"><html:text name="prodIterateId" property="productPrice" readonly="true" size="33"/></td>
        <td  align="center"><html:text name="prodIterateId" property="productCode" readonly="true" size="33"/></td>
    </tr>
    </logic:iterate>
    </table>
</logic:notEmpty>


Ajax in struts

How to use ajax in struts and hibernate.

Ajax is very important in website coding.
Here I am demonstrating how to use jquery ajax in struts and hibernate.


struts-config.xml
--------------------------
<action input="/" path="/amittest" scope="request" type="com.test.actions.AmitTestAction" parameter="method">
<forward name="success" path="/Webs/Input/amittest.jsp"/>
</action>
====================================================


query.hbm.xml
-----------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
  <sql-query cache-mode="ignore" cacheable="false" flush-mode="always" name="chkBook"> SELECT COUNT(*) FROM book_master WHERE code_id=:code AND serial_id>=:serial </sql-query>
</hibernate-mapping>
====================================================

MyUtilDao.java
------------------------------
package dao;
import org.hibernate.CacheMode;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import plugins.HibernateSessionFactory;
public class MyUtilDao {
    public int chkBook(int code,int serial){
        Session ssn = null;
        ssn = HibernateSessionFactory.getSession();
        ssn.setCacheMode(CacheMode.GET);
        Query qry = ssn.getNamedQuery("chkBook");
        qry.setParameter("code", code);
        qry.setParameter("serial", serial);
        Object tot = qry.uniqueResult();
        int total = 0;
        if (tot != null) {
            total = Integer.parseInt(tot.toString());
        } else {
            total = 0;
        }
        return total;
    }
 
}
====================================================

AmitTestAction.java
-------------------------
package mytest.actions;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.*;
import java.util.Date;
import java.text.DateFormat;
import java.text.SimpleDateFormat;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForward;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import dao.MyUtilDao;
import plugins.HibernateSessionFactory;

public class AmitTestAction  extends org.apache.struts.actions.DispatchAction {
     private final static String SUCCESS = "success";
     public ActionForward showForm(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response) throws Exception {
       
         MyUtilDao myUtiDaoObj=new MyUtilDao();
       
         String ffor= request.getParameter("ffor");
         if(ffor.compareTo("chkBook")==0) {
            int code= Integer.parseInt(request.getParameter("code"));
            int erial= Integer.parseInt(request.getParameter("serial"));
            int total=myUtiDaoObj.chkBook(code,serial);
            request.setAttribute("total", total);
            request.setAttribute("ffor", "chkBook");
         }
         return mapping.findForward(SUCCESS);
      }
}
====================================================
amittest.jsp
<%
if(request.getAttribute("ffor")!=null) {
    if(request.getAttribute("ffor").toString().compareTo("chkBook")==0) {
        out.print(request.getAttribute("total"));
    }
}
%>
====================================================
BookAdd.jsp

<input type="button" name="btn1" value="Button" onclick="dotest();"/>
<html:button property="button" value="Save" onclick="do_save()"/>
<script>

 var code=222;
var serial=111;
function do_save() {
        var ajaxans="";
        $.ajax({
                    url: "amittest.do?method=showForm",
                    type: "POST",
                    async: false,
                    cache: false,
                    data:   { 'ffor':'chkBook',
                              'code':code,
                              'serial':serial},
                    success: function(html) {
                             ajaxans=html;
                            }
                }
             );
       if(ajaxans=="1" || parseInt(ajaxans)==1) {
           alert("This is already exists");
           return;
       }    
        var r=confirm("Do you want to save?");
        if (r==true) {
            document.forms[0].action="BookMasterAdd.do?method=processForm";
            document.forms[0].submit();
        }
    }

   function dotest() {
       /*$.post("http://localhost:8080/mytest/amittest.do?method=showForm",{'method':'showForm'},function(ans) {
alert(ans);
});*/
      /*// done
       *$.post("amittest.do?method=showForm",{'method':'showForm'},function(ans) {
alert(ans);
});*/
      /* done
       * $.post("amittest.do?method=showForm",function(ans) {
alert(ans);
});*/
      /* $.get("amittest.do?method=showForm",function(ans) {
alert(ans);
});*/
     
      /* $.get("amittest.do?method=showForm",{'val1':'Hi'},function(ans) {
alert(ans);
});*/  
   
      /*   $.post("amittest.do?method=showForm",{'val1':'Hi'},function(ans) {
alert(ans);
});*/
    /*  $.post("amittest.do?method=showForm",{'ffor':'chkExistReceiptBookMaster',
                                            'zone_code':'8004500',
                                            'frm_serial':'11'
                                           },function(ans) {
alert(ans);
});*/
}
</script>
====================================================



java.lang.OutOfMemoryError: PermGen space in netbeans

java.lang.OutOfMemoryError: PermGen space in netbeans

How to solve it in netbeans:
1- Right click on server
2- properties
3- select platform
4-in VM option paste as : -Xmx512m -Xms512m -XX:MaxPermSize=512m

java.lang.OutOfMemoryError: PermGen space in netbeans

DispatchMapping does not define a handler property




You may face this error while working on java struts:

"DispatchMapping[/login] does not define a handler property"




Answer of this issue is "parameter attribute mention in struts-config for method of Action class"

Cannot retrieve definition for form bean on action

javax.servlet.jsp.JspException: Cannot retrieve definition for form bean stdname on action regist 

Ans:spelling mistake in tags, so check it and correct it in struts-config.xml file

Action missing resource in key method map

Action missing resource in key method map

Ans:It means the you have put some spaces in .properties file or missing some property key and its value

Cannot find ActionMappings or ActionFormBeans collection

org.apache.jasper.JasperException: javax.servlet.
ServletException: javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection
root cause
javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection
root cause
javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection


Ans: One of the most common error is that .. that you have missed struts-config file path in web.xml file.

for Ex: <param-value>/WEB_INF/struts-config.xml</param-value>
so change it as <param-value>/WEB-INF/struts-

config.xml</param-value>

message No action instance for path / could be created error in struts

message No action instance for path /getcity could be created in struts
description The server encountered an internal error (No action instance for path /getcity could be created) that prevented it from fulfilling this request.

Ans: it means that you miss-spelled class information just see [type="con.test.action.DoLogin"] it must be 
type="com.test.action.DoLogin"

<action name="logform" path="/getcity"  type="con.test.action.DoLogin" scope="request" parameter="action">
            <forward name="cityyyy" path="/city_confirm.jsp"/>
        </action>

Action does not contain specified method (check logs)

javax.servlet.ServletException: java.lang.
NoSuchMethodException: Action[/salary] does not contain specified method (check logs)
java.lang.NoSuchMethodException: Action[/salary] does not contain specified method (check logs)

Ans: This means "salary" method must be a text in the .jsp file:
public ActionForward salary(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response) throws Exception {
        LoginForm lfm=(LoginForm)form;
        request.setAttribute("empName", lfm.getAname());
        return mapping.findForward("salary");
    }

<html:form action="/salary" method="post">
Salary: <html:text property="salary"/><br/>
Emp code <html:text property="empcode"/><br/>
<html:submit value="salary" property="action"/>
</html:form>struts-config.xml
 

Cannot find message resources under key org.apache.struts.action.MESSAGE

Cannot find message resources under key org.apache.struts.action.MESSAGE

 javax.servlet.jsp.JspException: Cannot find message resources under key org.apache.struts.action.
MESSAGE
javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot find message resources under key org.apache.struts.action.MESSAGE

 
Ans:
1- create a package: com.test.properties
2- under that package create a "Common.properties" file with this contents or just empty it:

#common module error message
error.common.name.required = Name is required.

#common module label message
label.common.name = UserName
label.common.button.submit = Submit
label.common.button.reset = Reset


3- just add the message-resource tag in struts-config.xml file as listed below:
<message-resources parameter="com.test.properties.Common"></message-

resources>