thoerup/traininfoservice/LoadStations.java

package dk.thoerup.traininfoservice;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
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;


public class LoadStations extends HttpServlet {
        private static final long serialVersionUID = 1L;

        public LoadStations() {
                super();
        }

        protected void insertOrUpdate(Connection conn, String type, String code, String name)  throws SQLException{
                String sql = "SELECT id FROM trainstations WHERE stationcode=?";
                PreparedStatement stmt = conn.prepareStatement(sql);
                stmt.setString(1, code);
                
                ResultSet rs = stmt.executeQuery();
                
                boolean stog = type.equalsIgnoreCase("S2");
                
                if (rs.next()) {
                        int id = rs.getInt(1);
                        stmt = conn.prepareStatement("UPDATE trainstations SET name=?, stog=?, updated=now() WHERE id=?");
                        stmt.setString(1, name);
                        stmt.setBoolean(2, stog);
                        stmt.setInt(3, id);
                        stmt.execute();
                } else {
                        stmt = conn.prepareStatement("INSERT INTO trainstations (name,stationcode,stog,updated) VALUES (?,?,?,now())");
                        stmt.setString(1, name);
                        stmt.setString(2, code);
                        stmt.setBoolean(3, stog);
                        stmt.execute();
                }
                
        }

        @Override
        protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
                String url = "http://rafiki.t-hoerup.dk/tog/stations.php";

                String stationStr = DownloadUtil.getContentString(url, 5000, "ISO-8859-1");

                String stations[] = stationStr.split("\n");
                Connection conn = null; 
                try {
                        conn = DBConnection.getConnection();            
                        for (String stationLine : stations) {
                                String fields[] = stationLine.split(";");
                                
                                
                                insertOrUpdate(conn, fields[0], fields[1], fields[2]);
                        }
                } catch (Exception e) {
                        throw new ServletException(e);
                } finally {
                        try {
                                if (conn != null && !conn.isClosed())
                                        conn.close();
                        } catch (SQLException e) {}
                }                       
                PrintWriter out = resp.getWriter();
                out.print("ok");
        }

}
1	package dk.thoerup.traininfoservice;
2
3	import java.io.IOException;
4	import java.io.PrintWriter;
5	import java.sql.Connection;
6	import java.sql.PreparedStatement;
7	import java.sql.ResultSet;
8	import java.sql.SQLException;
9
10	import javax.servlet.ServletException;
11	import javax.servlet.http.HttpServlet;
12	import javax.servlet.http.HttpServletRequest;
13	import javax.servlet.http.HttpServletResponse;
14
15
16	public class LoadStations extends HttpServlet {
17	private static final long serialVersionUID = 1L;
18
19	public LoadStations() {
20	super();
21	}
22
23	protected void insertOrUpdate(Connection conn, String type, String code, String name) throws SQLException{
24	String sql = "SELECT id FROM trainstations WHERE stationcode=?";
25	PreparedStatement stmt = conn.prepareStatement(sql);
26	stmt.setString(1, code);
27
28	ResultSet rs = stmt.executeQuery();
29
30	boolean stog = type.equalsIgnoreCase("S2");
31
32	if (rs.next()) {
33	int id = rs.getInt(1);
34	stmt = conn.prepareStatement("UPDATE trainstations SET name=?, stog=?, updated=now() WHERE id=?");
35	stmt.setString(1, name);
36	stmt.setBoolean(2, stog);
37	stmt.setInt(3, id);
38	stmt.execute();
39	} else {
40	stmt = conn.prepareStatement("INSERT INTO trainstations (name,stationcode,stog,updated) VALUES (?,?,?,now())");
41	stmt.setString(1, name);
42	stmt.setString(2, code);
43	stmt.setBoolean(3, stog);
44	stmt.execute();
45	}
46
47	}
48
49	@Override
50	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
51	String url = "http://rafiki.t-hoerup.dk/tog/stations.php";
52
53	String stationStr = DownloadUtil.getContentString(url, 5000, "ISO-8859-1");
54
55	String stations[] = stationStr.split("\n");
56	Connection conn = null;
57	try {
58	conn = DBConnection.getConnection();
59	for (String stationLine : stations) {
60	String fields[] = stationLine.split(";");
61
62
63	insertOrUpdate(conn, fields[0], fields[1], fields[2]);
64	}
65	} catch (Exception e) {
66	throw new ServletException(e);
67	} finally {
68	try {
69	if (conn != null && !conn.isClosed())
70	conn.close();
71	} catch (SQLException e) {}
72	}
73	PrintWriter out = resp.getWriter();
74	out.print("ok");
75	}
76
77	}