servlet没有从ajax获取值

Question

我正在使用JSP - AJAX - SERVLET。需要从数据库中获取值。我在下一页中没有AJAX从JSP获取值，但需要ajax的目的是在同一页面上获取值。 这是代码： index.jsp的：

    package in.ac.idrbt;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class NeftRtgsCount
 */
public class NeftRtgsCount extends HttpServlet {
    private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
  //  public NeftRtgsCount1() {
   //     super();
        // TODO Auto-generated constructor stub
   // }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        //response.getWriter().append("Served at: ").append(request.getContextPath());
        PrintWriter pw=response.getWriter();
        response.setContentType("text/html");

        String FROM_DATE = request.getParameter("date1").toUpperCase().trim();
        String TO_DATE = request.getParameter("date2").toUpperCase().trim();
        String TYPE =request.getParameter("type");


        Connection con;
        PreparedStatement ps = null;
        ResultSet rs = null;
        try {
        Class.forName("oracle.jdbc.driver.OracleDriver");
        con = DriverManager.getConnection("jdbc:oracle:thin:@172.16.105.48:1521:sfms","sfmsbr","sfms");
        if((TYPE).equals("NEFT"))
        {
        ps = con.prepareStatement("Select sum(NEFT_OUT) TOTAL_NEFT_OUT from (select count(*) NEFT_OUT from MHB_MSG_HDR_BR_AR where MHB_MSG_TYP in ('2184', '2185') and MHB_OWNR_ADDRS='IFTO0000001' and MHB_SEND_DATE between TO_DATE('"+FROM_DATE+"', 'DD-MON-YYYY HH24:MI:SS') and TO_DATE('"+TO_DATE+"', 'DD-MON-YYYY HH24:MI:SS') union all select count(*) NEFT_OUT from MHB_MSG_HDR_BR where MHB_MSG_TYP in ('2184', '2185') and MHB_OWNR_ADDRS='IFTO0000001' and MHB_SEND_DATE between TO_DATE('"+FROM_DATE+"', 'DD-MON-YYYY HH24:MI:SS') and TO_DATE('"+TO_DATE+"', 'DD-MON-YYYY HH24:MI:SS'))");
        rs = ps.executeQuery();


        while (rs.next())
        {

        //String NeftCount=null;
        pw.println( "NEFT COUNT :"+rs.getInt(1)+"");

        } 
        }
        else if((TYPE).equals("RTGS")){
            ps = con.prepareStatement("Select sum(RTGS_OUT) TOTAL_RTGS_OUT from(select count(*) RTGS_OUT from MHB_MSG_HDR_BR_AR where MHB_MSG_TYP in ('5010','5011', '5012', '5013') and MHB_OWNR_ADDRS='IFTO0000001' and MHB_SEND_DATE between TO_DATE('"+FROM_DATE+"', 'DD-MON-YYYY HH24:MI:SS') and TO_DATE('"+TO_DATE+"', 'DD-MON-YYYY HH24:MI:SS') union all select count(*) RTGS_OUT from MHB_MSG_HDR_BR where MHB_MSG_TYP in ('5010','5011', '5012', '5013') and MHB_OWNR_ADDRS='IFTO0000001' and MHB_SEND_DATE between TO_DATE('"+FROM_DATE+"', 'DD-MON-YYYY HH24:MI:SS') and TO_DATE('"+TO_DATE+"', 'DD-MON-YYYY HH24:MI:SS'))");
            rs = ps.executeQuery();


            while (rs.next())
            {

            //String NeftCount=null;
            pw.println( "RTGS COUNT :"+rs.getInt(1)+"");

            }
        }
        }
        catch (SQLException e)
        {
            System.out.println(e);
        }
        catch(ClassNotFoundException ex)
        {
            System.out.println("ex");

        }
        catch (NullPointerException nullPointer)
        {
            System.out.println(nullPointer);
        }
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
    doGet(request, response);
    }


    }

NeftRtgsCount.java

public class main {
    public static void main(String args[]) {
    ScalesSolution s1 = new ScalesSolution(11);
    s1.println();
    ScalesSolution s2 = new ScalesSolution(s1.GetSol());
    s2.println();
}
}

点击Getcount后.Url更改为

npm  然后没有任何显示。