Discussion :

[d.ayuk33]

Bonjour,

Je suis entrain de créer un site en utilisant tomcat et MYSQL sur plateforme NETBEANS. Lorsque je lance l'application web, j'ai ce erreur. Est-ce qu'il y'a une personne qui pourra m'aider. l'application se trouve après le Log



tomcat Log
-----------

Code :

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org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create PoolableConnection
Factory (Could not create connection to database server. Attempted reconnect 3 t
imes. Giving up.)
        at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createPoolableConnectionF
actory(BasicDataSource.java:1549)
        at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDat
aSource.java:1388)
        at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSo
urce.java:1044)
        at data.ConnectionPool.getConnection(ConnectionPool.java:38)
        at data.UserDB.emailExists(UserDB.java:99)
        at email.AddToEmailListServlet.doGet(AddToEmailListServlet.java:30)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
a:293)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:859)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ss(Http11Protocol.java:602)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:48
9)
        at java.lang.Thread.run(Thread.java:722)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:
 Could not create connection to database server. Attempted reconnect 3 times. Gi
ving up.
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstruct
orAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingC
onstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
        at com.mysql.jdbc.Util.getInstance(Util.java:386)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1013)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:987)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:982)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:927)
        at com.mysql.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:
2237)
        at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2158)
        at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:792)
        at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstruct
orAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingC
onstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
        at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:381)
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:305)
        at org.apache.tomcat.dbcp.dbcp.DriverConnectionFactory.createConnection(
DriverConnectionFactory.java:38)
        at org.apache.tomcat.dbcp.dbcp.PoolableConnectionFactory.makeObject(Pool
ableConnectionFactory.java:582)
        at org.apache.tomcat.dbcp.dbcp.BasicDataSource.validateConnectionFactory
(BasicDataSource.java:1556)
        at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createPoolableConnectionF
actory(BasicDataSource.java:1545)
        ... 19 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communicatio
ns link failure
 
The last packet sent successfully to the server was 0 milliseconds ago. The driv
er has not received any packets from the server.
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstruct
orAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingC
onstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
        at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1
116)
        at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:344)
        at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2332)
        at com.mysql.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:
2176)
        ... 33 more
Caused by: java.net.ConnectException: Connection refused: connect
        at java.net.TwoStacksPlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.ja
va:339)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocket
Impl.java:200)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java
:182)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
        at java.net.Socket.connect(Socket.java:579)
        at java.net.Socket.connect(Socket.java:528)
        at java.net.Socket.<init>(Socket.java:425)
        at java.net.Socket.<init>(Socket.java:241)
        at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.ja
va:257)
        at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:294)
        ... 35 more

Context.xml
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<?xml version="1.0" encoding="UTF-8"?>
<Context path="/ch14email">
 
 
 
    <Resource name="jdbc/murach" auth="Container" 
        maxActive="100" maxIdle="30" maxWait="10000" 
        username="root" password="sesame" 
        driverClass="com.mysql.jdbc.Driver" 
        url="jdbc:mysql://localhost:3306/murach?autoReconnect=true" 
        logAbandoned="true" removeAbandoned="true" 
        removeAbandonedTimeout="60" type="javax.sql.DataSource" />
 
</Context>

Data Layer 1
------------

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package data;
 
import java.sql.*;
import javax.sql.DataSource;
import javax.naming.InitialContext;
 
public class ConnectionPool
{
    private static ConnectionPool pool = null;
    private static DataSource dataSource = null;
 
    private ConnectionPool()
    {
        try
        {
            InitialContext ic = new InitialContext();
            dataSource = (DataSource) ic.lookup("java:/comp/env/jdbc/murach");
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
    }
 
    public static ConnectionPool getInstance()
    {
        if (pool == null)
        {
            pool = new ConnectionPool();
        }
        return pool;
    }
 
    public Connection getConnection()
    {
        try
        {
            return dataSource.getConnection();
        }
        catch (SQLException sqle)
        {
            sqle.printStackTrace();
            return null;
        }
    }
 
    public void freeConnection(Connection c)
    {
        try
        {
            c.close();
        }
        catch (SQLException sqle)
        {
            sqle.printStackTrace();
        }
    }
}
 
 
Data Layer 2
------------
 
package data;
 
import java.sql.*;
 
public class DBUtil
{
    public static void closeStatement(Statement s)
    {
        try
        {
            if (s != null)
                s.close();
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
    }
 
    public static void closePreparedStatement(Statement ps)
    {
        try
        {
            if (ps != null)
                ps.close();
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
    }
 
    public static void closeResultSet(ResultSet rs)
    {
        try
        {
            if (rs != null)
                rs.close();
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
    }
}

Data Layer 3
------------

Code :

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package data;
 
import java.sql.*;
 
import business.User;
 
public class UserDB
{
    public static int insert(User user)
    {
        ConnectionPool pool = ConnectionPool.getInstance();
        Connection connection = pool.getConnection();
        PreparedStatement ps = null;
 
        String query = 
                "INSERT INTO User (FirstName, LastName, EmailAddress) " +
                "VALUES (?, ?, ?)";
        try
        {        
            ps = connection.prepareStatement(query);
            ps.setString(1, user.getFirstName());
            ps.setString(2, user.getLastName());
            ps.setString(3, user.getEmailAddress());
            return ps.executeUpdate();
        }
        catch(SQLException e)
        {
            e.printStackTrace();
            return 0;
        }
        finally
        {
            DBUtil.closePreparedStatement(ps);
            pool.freeConnection(connection);
        }
    }
 
    public static int update(User user)
    {
        ConnectionPool pool = ConnectionPool.getInstance();
        Connection connection = pool.getConnection();
        PreparedStatement ps = null;
 
        String query = "UPDATE User SET " +
                "FirstName = ?, " +
                "LastName = ?, " +
                "WHERE EmailAddress = ?";
        try
        {
            ps = connection.prepareStatement(query);
            ps.setString(1, user.getFirstName());
            ps.setString(2, user.getLastName());
            ps.setString(3, user.getEmailAddress());
 
            return ps.executeUpdate();
        }
        catch(SQLException e)
        {
            e.printStackTrace();
            return 0;
        }
        finally
        {
            DBUtil.closePreparedStatement(ps);
            pool.freeConnection(connection);
        }
    }
 
    public static int delete(User user)
    {
        ConnectionPool pool = ConnectionPool.getInstance();
        Connection connection = pool.getConnection();
        PreparedStatement ps = null;
 
        String query = "DELETE FROM User " +
                "WHERE EmailAddress = ?";
        try
        {
            ps = connection.prepareStatement(query);
            ps.setString(1, user.getEmailAddress());
 
            return ps.executeUpdate();
        }
        catch(SQLException e)
        {
            e.printStackTrace();
            return 0;
        }
        finally
        {
            DBUtil.closePreparedStatement(ps);
            pool.freeConnection(connection);
        }
    }
 
    public static boolean emailExists(String emailAddress)
    {
        ConnectionPool pool = ConnectionPool.getInstance();
        Connection connection = pool.getConnection();
        PreparedStatement ps = null;
        ResultSet rs = null;
 
        String query = "SELECT EmailAddress FROM User " +
                "WHERE EmailAddress = ?";
        try
        {
            ps = connection.prepareStatement(query);
            ps.setString(1, emailAddress);
            rs = ps.executeQuery();
            return rs.next();
        }
        catch(SQLException e)
        {
            e.printStackTrace();
            return false;
        }
        finally
        {
            DBUtil.closeResultSet(rs);
            DBUtil.closePreparedStatement(ps);
            pool.freeConnection(connection);
        }
    }
 
    public static User selectUser(String emailAddress)
    {
        ConnectionPool pool = ConnectionPool.getInstance();
        Connection connection = pool.getConnection();
        PreparedStatement ps = null;
        ResultSet rs = null;
 
        String query = "SELECT * FROM User " +
                       "WHERE EmailAddress = ?";
        try
        {
            ps = connection.prepareStatement(query);
            ps.setString(1, emailAddress);
            rs = ps.executeQuery();
            User user = null;
            if (rs.next())
            {
                user = new User();
                user.setFirstName(rs.getString("FirstName"));
                user.setLastName(rs.getString("LastName"));
                user.setEmailAddress(rs.getString("EmailAddress"));
            }
            return user;
        }
        catch (SQLException e){
            e.printStackTrace();
            return null;
        }        
        finally
        {
            DBUtil.closeResultSet(rs);
            DBUtil.closePreparedStatement(ps);
            pool.freeConnection(connection);
        }
    }
}

[Mathieu.J]

Je dirais un problème de droit.