Read XML Taglib and JSTL in JSP


samle.xml

 <?xml version="1.0" encoding="ISO-8859-1"?>
 <weather ver="2.0">
   <loc id="INXX0096">
     <dnam>New Delhi, India </dnam>
     <tm>3:30 PM </tm>
   </loc>
   <cc>
     <tmp>75 </tmp>
     <bar>
       <r>29.94 </r>
       <d>steady </d>
     </bar>
   </cc>
 </weather>

--------------------------------
xml_read.jsp

<%@ page contentType="text/html; charset=iso-8859-1" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<%@ taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml" %>
<c:import url="http://localhost:8080/XML/samle.xml" var="xml"/>
<x:parse xml="${xml}" varDom="dom"/>
<html>
<head>
<title>Read XML through taglib JSTL</title>
</head>

<body>
      <x:forEach select="$dom/weather/cc/tmp" var="tmp">
        <x:out select="$tmp" />
    </x:forEach>

    <br>

    <x:forEach select="$dom/weather/cc/bar/d" var="d">
        <x:out select="$d" />
    </x:forEach>
</body>
</html>
READ MORE - Read XML Taglib and JSTL in JSP

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How to read XML file in java



books.xml

<?xml version="1.0" encoding="iso-8859-1"?>
<library>
 <book>
   <name>Head First Java, 2nd Edition</name>
   <author>Kathy Sierra and Bert Bates</author>
   <publication-date>09-Feb-2005</publication-date>
 </book>
 <book>
   <name>Effective Java</name>
   <author>Joshua Bloch</author>
   <publication-date>28-May-2008</publication-date>
 </book>
 <book>
   <name>Java How to Program, 7th Edition</name>
   <author>Harvey M. Deitel and Paul J. Deitel</author>
   <publication-date>6-Jan-2007</publication-date>
 </book>
</library>

------------------------------------------------------------
readDOMXML.jsp

<%@ page language="java" %>
<%@ page import="org.w3c.dom.*" %>
<%@ page import="javax.xml.parsers.DocumentBuilder" %>
<%@ page import="javax.xml.parsers.DocumentBuilderFactory" %>
<%
    DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();
    DocumentBuilder db =dbf.newDocumentBuilder();
    Document doc=db.parse("c:\\books.xml");
   
   
    NodeList nl = doc.getElementsByTagName("book");
   
%>
<html>
<head>
<title>How to read XML file in JAVA</title>
</head>
<body>
<%

for(int i=0;i<nl.getLength();i++)
{
  NodeList nameNlc=    doc.getElementsByTagName("name");
  Element nameElements=(Element)nameNlc.item(i);
  String nameTagValue=nameElements.getChildNodes().item(0).getNodeValue();
 
 
  NodeList authorNlc=    doc.getElementsByTagName("author");
  Element authorElements=(Element)authorNlc.item(i);
  String authorTagValue=authorElements.getChildNodes().item(0).getNodeValue();
 
  NodeList dateNlc=    doc.getElementsByTagName("publication-date");
  Element dateElements=(Element)dateNlc.item(i);
  String dateTagValue=dateElements.getChildNodes().item(0).getNodeValue();
 
  out.println("name :"+nameTagValue+"<br>");  
  out.println("author :"+authorTagValue+"<br>");  
  out.println("publication-date :"+dateTagValue+"<br><br>");  
}

%>

</body>
</html>
READ MORE - How to read XML file in java

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getElementsByTagName in javascript


<html>
<head>
<title>getElementsByTagName Javascript</title>
<script>
function getElementFtn()
{
 alert(document.getElementsByTagName("p").item(0).innerHTML)
}
</script>
</head>

<body>
<p>this is first tag</p>

<p>this is second</p>

<p id="pID">this is third tag</p>

<p>this is forth tag</p>

<p>this is fifth tag</p>

<a href="javascript:getElementFtn()">check this element</a>
</body>
</html>
READ MORE - getElementsByTagName in javascript

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Form parameter validation using javascript(username,password,email,number,alphanumeric))



UserName Password validation

<html>
<head>
<title>Required Validation</title>
<script>
function validate()
{
  var vUser=trim(document.frm.sUser.value);
  var vPwd=trim(document.frm.sPwd.value);

  if(vUser=="")
  {
    alert("User Name Field is Empty");
    document.frm.sUser.focus();
    return false;
  }
  else if(vPwd=="")
  {
   alert("Password Field is Empty");
   document.frm.sPwd.focus();
   return false;
  }
}

function trim(s) {
    return s.replace( /^\s*/, "" ).replace( /\s*$/, "" );
}

</script>
</head>

<body>
<form name="frm" onSubmit="return validate();">
User Name <input type="text" name="sUser" /><br>
Password <input type="password" name="sPwd" /><br>
<input type="submit" name="goTo" value="Submit"/>
</form>
</body>
</html>


----------------------------------------------------------------
Number or Integer Validation

<html>
<head>
<title>Number Integer Validation</title>
<script>

function validate()
{
  var dValidate=document.frm.numberValidate.value;
  if(dValidate=="")
  {
    alert("Number Field is empty")
    return false;
  }
  else if(isDigits(dValidate)==false)
  {
   alert("Field is not numeric")
   return false;
  }
}

function isDigits(argvalue) {
    argvalue = argvalue.toString();
    var validChars = "0123456789";
    var startFrom = 0;
    if (argvalue.substring(0, 2) == "0x") {
       validChars = "0123456789abcdefABCDEF";
       startFrom = 2;
    } else if (argvalue.charAt(0) == "0") {
       validChars = "01234567";
       startFrom = 1;
    }
    for (var n = 0; n < argvalue.length; n++) {
        if (validChars.indexOf(argvalue.substring(n, n+1)) == -1) return false;
    }
  return true;
}
</script>
</head>

<body>
<form name="frm" onSubmit="return validate();">
Number <input type="text" name="numberValidate" />
<input type="submit" name="goTo" value="Number Validate" />
</form>
</body>
</html>


------------------------------------------------------------------
Date Validation

<html>
<head>
<title>Date Validation</title>
<script>
function validate()
{
  var dValidate=document.frm.dateValidate.value;
  if(dValidate!="")
  {
    var arDValidate=dValidate.split("/");
    if(arDValidate.length==3)
    {
      if(arDValidate[0].length!=2 || (arDValidate[0]>32))
      {
         alert("Wrong Date format");
         return false;
      }
      else if(arDValidate[1].length!=2 || (arDValidate[1]>13))
      {
         alert("Wrong Month format");
         return false;
      }
      else if(arDValidate[2].length!=4 || (arDValidate[2]<1900))
      {
         alert("Wrong Year format");
         return false;
      }
      else
      {
        var dateDate=new Date(arDValidate[2],arDValidate[1]-1,arDValidate[0]);
        if((arDValidate[0]!=dateDate.getDate()))
        {
          alert("Wrong Date Enter e.g date month year is not correct 31 feb 2009");
          return false;
        }
      }
    }
    else
    {
    alert("Wrong Format");
    return false;
    }
  }
  else
  {
   alert("Date is blank");
   return false;
  }
}

</script>
</head>

<body>
<form name="frm" onSubmit="return validate();">
mm/dd/yyyy <input type="text" name="dateValidate" />
<input type="submit" name="goTo" value="Date Validate" />
</form>
</body>
</html>


-------------------------------------------------------------------
Email Validation

<html>
<head>
<title>Email Validation</title>
<script>
function validate()
{
  var dValidate=document.frm.emailValidate.value;
  if(dValidate=="")
  {
    alert("Email Field is empty")
    return false;
  }
  else if(checkEmail(dValidate)==false)
  {
   alert("Email Format is not correct")
   return false;
  }
}

function checkEmail(emailStr) {
       if (emailStr.length == 0) {
           return true;
       }
       var emailPat=/^(.+)@(.+)$/;
       var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
       var validChars="\[^\\s" + specialChars + "\]";
       var quotedUser="(\"[^\"]*\")";
       var ipDomainPat=/^(\d{1,3})[.](\d{1,3})[.](\d{1,3})[.](\d{1,3})$/;
       var atom=validChars + "+";
       var word="(" + atom + "|" + quotedUser + ")";
       var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
       var domainPat=new RegExp("^" + atom + "(\\." + atom + ")*$");
       var matchArray=emailStr.match(emailPat);
       if (matchArray == null) {
           return false;
       }
       var user=matchArray[1];
       var domain=matchArray[2];
       if (user.match(userPat) == null) {
           return false;
       }
       var IPArray = domain.match(ipDomainPat);
       if (IPArray != null) {
           for (var i = 1; i <= 4; i++) {
              if (IPArray[i] > 255) {
                 return false;
              }
           }
           return true;
       }
       var domainArray=domain.match(domainPat);
       if (domainArray == null) {
           return false;
       }
       var atomPat=new RegExp(atom,"g");
       var domArr=domain.match(atomPat);
       var len=domArr.length;
       if ((domArr[domArr.length-1].length < 2) ||
           (domArr[domArr.length-1].length > 3)) {
           return false;
       }
       if (len < 2) {
           return false;
       }
       return true;
}
</script>
</head>

<body>
<form name="frm" onSubmit="return validate();">
Email <input type="text" name="emailValidate" />
<input type="submit" name="goTo" value="Email Validate" />
</form>
</body>
</html>

------------------------------------------------------------------
Alpha Character Validation

<html>
<head>
<title>Alpha number Validation</title>
<script>

function validate()
{
  var dValidate=document.frm.alphaValidate.value;
  if(dValidate=="")
  {
    alert("Alpha Field is empty")
    return false;
  }
  else if(isAlpha(dValidate)==false)
  {
   alert("Field is not alpha character")
   return false;
  }
}

function isAlpha(argvalue) {
  argvalue = argvalue.toString();
  var validChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

    for (var n = 0; n < argvalue.length; n++) {
        if (validChars.indexOf(argvalue.substring(n, n+1)) == -1)
         return false;
    }
  return true;
}
</script>
</head>

<body>
<form name="frm" onSubmit="return validate();">
Alpha Character <input type="text" name="alphaValidate" />
<input type="submit" name="goTo" value="Alpha Validate" />
</form>

</body>
</html>

READ MORE - Form parameter validation using javascript(username,password,email,number,alphanumeric))

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Enable Disable Radio button Text box in JavaScript


<html>
<head>
<title>Enable Disable Radio button Text box in javascript</title>
</head>
<script>
 function chMd()
 {
  // initialize form with empty field
  document.forms[0].sTextBox.disabled=false;
  document.forms[0].sTextBox.value="";

  document.forms[0].eTextBox.disabled=false;
  document.forms[0].eTextBox.value="";

  document.forms[0].goServer.disabled=false;

  for(var i=0;i<document.forms[0].elements.length;i++)
  {
    if(document.forms[0].elements[i].name=="dOption")
    {
     if(document.forms[0].elements[i].value=="N")
     {
       if(document.forms[0].elements[i].checked==true){

        document.forms[0].sTextBox.disabled=true;
        document.forms[0].eTextBox.disabled=true;

        document.forms[0].sRadio[0].disabled=true;
        document.forms[0].sRadio[1].disabled=true;
        document.forms[0].sRadio[2].disabled=true;

        document.forms[0].goServer.disabled=true;
       }
     }
     else if(document.forms[0].elements[i].value=="T")
     {
       if(document.forms[0].elements[i].checked==true){
        document.forms[0].sTextBox.disabled=false;
        document.forms[0].eTextBox.disabled=false;

        document.forms[0].sRadio[0].disabled=true;
        document.forms[0].sRadio[1].disabled=true;
        document.forms[0].sRadio[2].disabled=true;

        document.forms[0].goServer.disabled=false;
       }
     }
     else if(document.forms[0].elements[i].value=="R")
     {
       if(document.forms[0].elements[i].checked==true){
        document.forms[0].sTextBox.disabled=true;
        document.forms[0].eTextBox.disabled=true;

        document.forms[0].sRadio[0].disabled=false;
        document.forms[0].sRadio[1].disabled=false;
        document.forms[0].sRadio[2].disabled=false;

        document.forms[0].goServer.disabled=false;
       }
     }
    }
  }
 }
</script>

<body>
<form name="fRadio">
  <input name="dOption" value="N" checked="checked" onClick="chMd()" type="radio">
   No Constraints <br />

    <input name="dOption" value="T" onClick="chMd()" type="radio"> Text Box

    <input name="sTextBox" size="10"  disabled="disabled" type="text">
    <input name="eTextBox" size="10"  disabled="disabled" type="text"> <br/>

    <input name="dOption" value="R" onClick="chMd()" type="radio">  Radio Button
    Radio A  <input name="sRadio" value="A" disabled="disabled" type="radio">
    Radio B  <input name="sRadio" value="B" disabled="disabled" type="radio">
    Radio C  <input name="sRadio" value="C" disabled="disabled" type="radio"> <br/>
  <input name="goServer" value="Go" disabled="disabled" type="button">
  </form>
</body>
</html>
READ MORE - Enable Disable Radio button Text box in JavaScript

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