Thread: simple login web service

Hi,
I am kind of newb in java web service development , i want to write a simple web service application that client send username and password for server , then after authenticate that with mysql data base , the session for current user should be created, can anybody help me for doing that?!
p.s:I am using netbeans.
Thanks.

How about The Java(TM) Web Services Tutorial

// Json

Thanks for your help, but this toturial is really huge and confusing, do you know any simple one?! for example something like this.
Thanks a lot.

please someone tell me why this code is failed on testing:

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import javax.annotation.Resource;
import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebService;
import javax.sql.DataSource;
 
@WebService()
public class Login {
    @Resource(name = "dataproject")
    private DataSource dataproject;
 
    /**
     * Web service operation
     */
    @WebMethod(operationName = "Select")
    public String Select(@WebParam(name = "uname")
    String uname, @WebParam(name = "passwd")
    String passwd) {
 
        try {
            Class.forName("com.mysql.jdbc.Driver");
            Connection con =
DriverManager.getConnection("jdbc:mysql://localhost:3306/project",
"root", "1234");
            PreparedStatement st =
con.prepareStatement("select * from user where username='"+uname+"' and password='"+passwd+"'");
            ResultSet rs=st.executeQuery();
            int rowCount=rs.getRow();
            if(rowCount==0) return "Username and or password is not correct!";
            else return "connected!";
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
        //TODO write your implementation code here:
        return "Username and or password is not correct!";
    }
 
}