plz tell me how to insert a value to db and retrieve to a jsp

Use classes generated by service builder.
Use XXXXLocalServiceUtil to add and get data from database.

You can check this post http://michi-path.blogspot.in/2012/03/create-form-and-submit-values-to.html http://www.liferay.com/es/web/satyaranjan/blog/-/blogs/2506216

thanks for your post.....

ya i have done every thing what u explained but my jsp is not displaying with text boxes and submit button ..... and where to retrieve the values from database

what did you try? can you share your portlet?

<%@ taglib uri="http://java.sun.com/portlet_2_0" prefix="portlet" %>
this is my .jsp


<portlet:defineObjects />

<form action='<portlet:actionURL/>' method="post">
<table>
<tr>
<td>subjectname:</td>
<td><input type="text" name="subjectname" /></td>
</tr>
<tr>
<td>degree:</td>
<td><input type="text" name="degree " /></td>
</tr>

<tr>
<td colspan=2><input type="submit" value="submit" /></td>
</tr>
</table>
</form>

this is my .java code
package com.test;

import java.io.IOException;
import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.PortletException;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;
import com.liferay.portal.kernel.exception.SystemException;
import com.liferay.portal.kernel.util.ParamUtil;
import com.liferay.util.bridges.mvc.MVCPortlet;
import com.test.model.student;
import com.test.service.studentLocalServiceUtil;

/**
* Portlet implementation class successtruePortlet
*/
public class successtruePortlet extends MVCPortlet {
public void init() {
viewJSP = getInitParameter("view.jsp");

}

public String subjectname;
public Long studentid;
public String degree;





public void processAction(
ActionRequest actionRequest, ActionResponse actionResponse)
throws IOException, PortletException {

long studentid=Long.parseLong(actionRequest.getParameter("studentid"));


String subjectname=actionRequest.getParameter("subjectname");
String degree=actionRequest.getParameter("degree");

actionResponse.setRenderParameter("jspPage","html/successtrueportlet/view.jsp");


try {
studentLocalServiceUtil.addstudent(studentid,subjectname,degree);

} catch (SystemException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}
}



this is my XXXXlocalserviceimpl

public class studentLocalServiceImpl extends studentLocalServiceBaseImpl {

public student addstudent( long studentid,String subjectname,String degree) throws SystemException
{
student t = new studentImpl();
t = new studentImpl();
t.setStudentId(studentid);

t.setSubjectName(subjectname);
t.setDegree(degree);

return studentPersistence.update(t,false);

}



}



her is my code
but my portlet is displaying without text box and submit button and also tell me were to code for retriving data from database pls helpme!!

If you add anything else to jsp.. can you see that?

Can you attach your portlet war file?

thanks for reply i have .zip file pls go through it

Mellékletek:

successtrue-portlet.rar (915,9k)

Tried it. You have an error in your java class.
If you set <portlet-class> value to "com.liferay.util.bridges.mvc.MVCPortlet" jsp will be displayed.

thanks for your reply it worked ,but when i am entering the values into .jsp it is not stored in database,pls tell me were to write the code for retriving values from database

how to retrieve data from database and where to write the code for retriving.....pls send me the code snippet..and when i am submitting the values from jsp it is not storing in to database...

There are classes created by service builder.. They are XXXLocalServiceUtil.java look at that once, you will find many methods for creating/edit/delete/get etc. Try that once and let us know what is the issue.