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>
====================================================
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