daoadresseservice/db/DbConnectionProbe.java

package dk.daoas.daoadresseservice.db;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


@WebServlet("/DbConnectionProbe")
public class DbConnectionProbe extends HttpServlet {
        private static final long serialVersionUID = 1L;
       
    public DbConnectionProbe() {
        super();
    }


        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                response.setContentType("text/html");
                PrintWriter out = response.getWriter();
                
                //out.print("<html><head><title>DaoAdresseService</title></head><body>");
                //out.print("<h2>DaoAdresseService</h2>");
                
                try (
                        Connection conn = DBConnection.getConnection(); 
                        Statement stmt = conn.createStatement()
                        ) {
                        
                        out.print("Got DB Connection<br>");
                        
                        try (ResultSet res = stmt.executeQuery("SELECT 1") ) {
                                res.next();
                                int i = res.getInt(1);
                                if (i == 1) {
                                        out.print("'SELECT 1' query ok");
                                } else{
                                        out.print("'SELECT 1' returned unexpected result : " + i);
                                }
                        }
                        
                        
                } catch (SQLException e)  {
                        out.print("DB Connection failed: " + e.getMessage());
                }
                
                
        }

}
1	package dk.daoas.daoadresseservice.db;
2
3	import java.io.IOException;
4	import java.io.PrintWriter;
5	import java.sql.Connection;
6	import java.sql.ResultSet;
7	import java.sql.SQLException;
8	import java.sql.Statement;
9
10	import javax.servlet.ServletException;
11	import javax.servlet.annotation.WebServlet;
12	import javax.servlet.http.HttpServlet;
13	import javax.servlet.http.HttpServletRequest;
14	import javax.servlet.http.HttpServletResponse;
15
16
17	@WebServlet("/DbConnectionProbe")
18	public class DbConnectionProbe extends HttpServlet {
19	private static final long serialVersionUID = 1L;
20
21	public DbConnectionProbe() {
22	super();
23	}
24
25
26	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
27	response.setContentType("text/html");
28	PrintWriter out = response.getWriter();
29
30	//out.print("<html><head><title>DaoAdresseService</title></head><body>");
31	//out.print("<h2>DaoAdresseService</h2>");
32
33	try (
34	Connection conn = DBConnection.getConnection();
35	Statement stmt = conn.createStatement()
36	) {
37
38	out.print("Got DB Connection<br>");
39
40	try (ResultSet res = stmt.executeQuery("SELECT 1") ) {
41	res.next();
42	int i = res.getInt(1);
43	if (i == 1) {
44	out.print("'SELECT 1' query ok");
45	} else{
46	out.print("'SELECT 1' returned unexpected result : " + i);
47	}
48	}
49
50
51	} catch (SQLException e) {
52	out.print("DB Connection failed: " + e.getMessage());
53	}
54
55
56	}
57
58	}