Pool de connexion - Tomcat
Bonjour,
Je suis le tutoriel pour créer un pool de connexion.
Quand je lance la servlet qui utilise la datasource, j'ai le message suivant :
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
Pour indo, voici mon web.xml :
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<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>
bnpweb</display-name>
<servlet>
<servlet-name>ServletInit</servlet-name>
<servlet-class>com.bnp.projet.web.ServletInit</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ServletInit</servlet-name>
<url-pattern>/ServletInit</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>TutoPool</servlet-name>
<servlet-class>com.bnp.projet.web.connexion.TutoPool</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>TutoPool</servlet-name>
<url-pattern>/pool</url-pattern>
</servlet-mapping>
<resource-ref>
<description></description>
<res-ref-name>jdbc/TutoPool</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
<welcome-file-list>
<welcome-file>ServletInit</welcome-file>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app> |
Mon server.xml :
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<Context docBase="bnpweb" path="/bnpweb" reloadable="true" source="org.eclipse.jst.j2ee.server:bnpweb">
<Resource name="jdbc/TutoPool" auth="Container" type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/TutoPool">
<parameter>
<name>username</name>
<value>auguste</value>
</parameter>
<parameter>
<name>password</name>
<value>magicadm</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>com.microsoft.jdbc.sqlserver.SQLServerDriver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:microsoft:sqlserver://PARS001i0015:1433</value>
</parameter>
</ResourceParams>
</Context>
</Host>
</Engine>
</Service>
</Server> |
et ma servlet :
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package com.bnp.projet.web.connexion;
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.naming.Context;
import javax.naming.InitialContext;
import javax.servlet.ServletException;
import javax.servlet.UnavailableException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;
public class TutoPool extends HttpServlet {
private DataSource ds;
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
Connection con = null;
Statement s = null;
ResultSet rs = null;
try{
con = ds.getConnection();
s = con.createStatement();
rs = s.executeQuery("SELECT * FROM COLLABORATEURS_TR");
while(rs.next()){
out.println(rs.getString(1));
}
}catch(SQLException e){
response.sendError(500,"Exception sur accès à la BDD " + e);
System.out.println(e);
}finally{
if(rs!=null){
try{
rs.close();
}catch(SQLException e){
}
rs=null;
}
if(s!=null){
try{
s.close();
}catch(SQLException e){
}
s = null;
}
if(con!=null){
try{
con.close();
}catch(SQLException e){
}
con = null;
}
}
}
public void init() throws ServletException {
try{
Context iniCtx = new InitialContext();
ds = (DataSource)iniCtx.lookup("java:comp/env/jdbc/TutoPool");
}catch(Exception e){
throw new UnavailableException(e.getMessage());
}
}
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request,response);
}
} |
Quelqu'un a t-il une idée ?
Merci
[Edité par zekey: pensez au balises code svp]
