Mysql connect to java

i have a rt.jar file to connect java to mysql database

Similar Messages

MySQL Connectivity with Java

I amusing Connector/j 3.0 for jdbc through MySQL.
I am also using "org.gjt.mm.mysql.Driver"
Please suggest how to set the classpath/path for mysql driver and where to put the driver,
Please suggest with all configuration details.........

http://www.dynamic-apps.com/tutorials/classpath.jsp

Java mysql connectivity

hi
i m trying to connect to mysql database through java. i have mysql-java-connector jars file placed in the JAVA_HOME\jre\lib\ext directory.
now when i try to run this file its starts givin me this error...............
Exception in thread "main" java.lang.NoClassDefFoundError: Test
the java file that im running is this............(Test.java)
import java.sql.*;
import java.util.*;
import java.net.*;
import java.io.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.*;
class Test
     public static void main(String args[])
          System.out.println("Hello");
          System.out.println("Welcome to the world of java");
          System.out.println("Lets learn java.");
          String url="jdbc:mysql://localhost:3306/database";
          Connection con = null;
          Statement stmt = null;
          ResultSet rs = null;
          String query;
          try {
          try{
               Class.forName("com.mysql.jdbc.Driver").newInstance();
          catch(Exception e)
               System.out.println("driver not found"+e.getMessage());
               con = DriverManager.getConnection (url, "", "");
               stmt = con.createStatement();
               query = "select * from test;";
               ResultSet result = stmt.executeQuery(query);
               while(result.next())
               String callNumResult = result.getString("name");
               System.out.println(callNumResult);
          catch(Exception e)
               System.out.println("SQLException caught: " + e.getMessage());
          finally {
               try {
                    if (con != null) con.close();
               catch (SQLException e) {}
i have also tried adding that mysql-java connector jar file to the classpath........
but all in vain.....the error persists.
plz help me with it.........
ankur

hi
i m trying to connect to mysql database through java.
i have mysql-java-connector jars file placed in the
JAVA_HOME\jre\lib\ext directory.That's a terrible place to put them. Only language extensions (e.g., packages that start with javax) belong in there. Put that JAR closer to your application.
>
now when i try to run this file its starts givin me
this error...............
Exception in thread "main"
java.lang.NoClassDefFoundError: TestLook at the exception: it's complaining about Test, NOT the MySQL JDBC driver class.
You obviously don't understand how CLASSPATH works:
http://java.sun.com/j2se/1.4.2/docs/tooldocs/windows/classpath.html
I think you have to add the current directory to the CLASSPATH in order to run your Test:
java -classpath . TestNote the "dot" after -classpath. That tells the class loader to start looking in the current directory. since your Test.java doesn't have a package statement, I'm assuming that Test.class is in the same directory as Test.java.
>
>
>
the java file that im running is
this............(Test.java)
import java.sql.*;
import java.util.*;
import java.net.*;
import java.io.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.*;
class Test
public static void main(String args[])
System.out.println("Hello");
System.out.println("Welcome to the world of java");
System.out.println("Lets learn java.");
String url="jdbc:mysql://localhost:3306/database";
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
String query;
try {
try{
Class.forName("com.mysql.jdbc.Driver").newInstance();
catch(Exception e)
System.out.println("driver not found"+e.getMessage());
con = DriverManager.getConnection (url, "", "");
stmt = con.createStatement();
query = "select * from test;";
ResultSet result = stmt.executeQuery(query);
while(result.next())
String callNumResult = result.getString("name");
System.out.println(callNumResult);
catch(Exception e)
System.out.println("SQLException caught: " +
e.getMessage());
finally {
try {
if (con != null) con.close();
catch (SQLException e) {}
i have also tried adding that mysql-java connector jar
file to the classpath........
but all in vain.....the error persists.
plz help me with it.........
ankur

Few question about Java and MySQL connection

Hi!
I have some problems with creating connection between Java and MySQL.
I followed the restrictions in mysql-connector-java.jar' readme, I set the CLASSPATH :
CLASSPATH=.;D:/mysql/mysql-connector-java.jar;
I copied this jar file to the right place (descripted above), and I used the right steps to load it:
Class.forName('com.mysql.jdbc.Driver"); and it throws a ClassNotFoundException
Why? All the paths are correct, everything is on the right place.... I dont know why.
When I installed the JBuilder8, and copied the jar file to JBuilder8/jdk4/jre/lib/ext it worked without any CLASSPATH in enviromental variables.
If I want to run my program on machines where are not JBuilder, what should I do?
Please help, if you can.
Thanks,
henpanta

Yeah. So if I compiled my program with JBuilder to an .exe file, I cant run it on other machines, if the jar file isnt in the same place?
If I tried your advice, java -classpath mymainclass I got the next message:
main class not found. Believe me, its there. :(

MySQL trying to connect my java program

I am trying to write a java program that I can connect to a MySQL database on my compter. I have typed out this example that is in a text book I have and I am trying to connect my java program to a MySQL database. The version of MySQL is 4.1 which I have recently downloaded onto my computer and is working fine. The problem I am having is in ther places where it says "WHAT DO I ENTER HERE", basically the 'database.properties' , the 'jdbc.drivers' and the 'jdbc.url' string names. I do not know what I am supposed to enter. If you could give me some help with what I am supposed to enter or an example of a java program that already works with MySQL that would be of great help to me. A working example would be the greatest help to me .
Thank-you.
import java.sql.*;
import java.io.*;
import java.util.*;
class TestDB
public static void main (String args[])
try
    Connection conn = getConnection();
    Statement stat = conn.createStatement();
    stat.execute("CREATE TABLE Greetings (Name CHAR(20))");
    stat.execute("INSERT INTO Greetings VALUES ('Hello World!')");
    ResultSet result = stat.executeQuery("Select * From Greetings");
    result.next();
    System.out.println(result.getString(1));
    result.close();
    stat.execute("DROP TABLE Greetings");
    stat.close();
    conn.close();
catch (SQLException ex)
   while (ex != null)
     ex.printStackTrace();
     ex = ex.getNextException();
catch (IOException ex)
   ex.printStackTrace();
public static Connection getConnection() throws SQLException, IOException
   Properties props = new Properties();
   FileInputStream in = new FileInputStream("WHAT DO I ENTER HERE");
   props.load(in);
   in.close();
   String drivers = props.getProperty("WHAT DO I ENTER HERE");
   if(drivers != null)
     System.setProperty("WHAT DO I ENTER HERE", drivers);
   String url = props.getProperty("WHAT DO I ENTER HERE");
   String username = props.getProperty("jdbc.username");
   String password = props.getProperty("jdbc.password");
   return
     DriverManager.getConnection(url, username, password);
}

public static Connection getConnection() throws SQLException, IOException {
   Properties props = new Properties();
   // It could be absolute or relative path.
   // If the properties file is in the same dir, use the name as shown below.
   FileInputStream in = new FileInputStream("database.properties");
   props.load(in);
   in.close();
   // It will load the driver String from properties
   String drivers = props.getProperty("jdbc.drivers");
   if(drivers != null)
     System.setProperty("jdbc.drivers", drivers);
     // If drivers are not set in properties, set them now.
   String url = props.getProperty("jdbc.url");
   String username = props.getProperty("jdbc.username");
   String password = props.getProperty("jdbc.password");
   return DriverManager.getConnection(url, username, password);
}Have a look at the comments I inserted. :)

How to get total number of Database connections from Java code

Hi,
I am using Myql4.1.12.
I am conncting to mysql through Java.
I want to know how many active database connections were running at a specific time. Is it possible?
Can you please help me.
Thanks in advance.

Seems like this would be a question for MySql, not for Java. And if it's possible you'd run some MySql utility to do that, not code it in a Java app.

MYSQL connection timeout?

Hi all, ive been trying to update mysql databases on localhost and everything work perfect, but then im trying todo that in hosting (in this case phpnet.us). Im getting connection timeout error
com.mysql.jdbc.CommunicationsException: Communications link failure due to under
lying exception:
** BEGIN NESTED EXCEPTION **
java.net.ConnectException
MESSAGE: Connection timed out: connect
STACKTRACE:
java.net.ConnectException: Connection timed out: connect
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.PlainSocketImpl.doConnect(Unknown Source)
        at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
        at java.net.PlainSocketImpl.connect(Unknown Source)
        at java.net.SocksSocketImpl.connect(Unknown Source)
        at java.net.Socket.connect(Unknown Source)
        at java.net.Socket.connect(Unknown Source)
        at java.net.Socket.<init>(Unknown Source)
        at java.net.Socket.<init>(Unknown Source)
        at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.ja
va:173)
        at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:267)
        at com.mysql.jdbc.Connection.createNewIO(Connection.java:2739)
        at com.mysql.jdbc.Connection.<init>(Connection.java:1553)
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:266)
        at java.sql.DriverManager.getConnection(Unknown Source)
        at java.sql.DriverManager.getConnection(Unknown Source)
        at palidino76.rs2.util.SQLHandler.createConnection(SQLHandler.java:20)
        at palidino76.rs2.Engine.run(Engine.java:147)
        at java.lang.Thread.run(Unknown Source)
** END NESTED EXCEPTION **
Last packet sent to the server was 31 ms ago.
        at com.mysql.jdbc.Connection.createNewIO(Connection.java:2814)
        at com.mysql.jdbc.Connection.<init>(Connection.java:1553)
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:266)
        at java.sql.DriverManager.getConnection(Unknown Source)
        at java.sql.DriverManager.getConnection(Unknown Source)
        at palidino76.rs2.util.SQLHandler.createConnection(SQLHandler.java:20)
        at palidino76.rs2.Engine.run(Engine.java:147)
        at java.lang.Thread.run(Unknown Source)my connection looks like this
     public static void createConnection() {
          try {
                    System.out.println("Creating connection to mysql server.");
               String serverName = "sql306.phpnet.us:3306";
               String mydatabase = "pn_2815767_java";
               String url = "jdbc:mysql://" + serverName + "/" + mydatabase;
               Class.forName("com.mysql.jdbc.Driver").newInstance();
               con = DriverManager.getConnection(url, "pn_2815767", "password");
               stmt = con.createStatement();
          } catch (Exception e) {
               e.printStackTrace();
     }I'm messed up, if you know the problem please help.

Use a connection pool and it will automatically take care of this for you (as long as you retreive the connection from the pool everytime you need it, and not just once at the start of the app, and close it as soon as you finish using it, not just at the "end" of the app, closing a pool connection simply returns it to the pool, it does not actually close it).
Edit: That is, if the DB is part of the hosting service. If you are having the problem by the actual connection attempt, and the DB is located someplace else, then it is probably a routing/firewall issue. I.E. the hosting service is not allowing you to connect to it.

MySql Connectivity!@?

hi all,
I have a problem connecting my testLink app program to the remote mySQL database(another PC).
It seems that there is a link error on my part. Does anybody know whats wrong with my prog.
The program code below didnt have any problem compiling so i guess my mySQL driver has been set correctly,
But when i tried to run the prog. it generates error (see. below).
import java.sql.*;
public class testLink {
public static void main(String args[]) {
          Connection con = null;
          PreparedStatement ps = null;
try {
     Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://192.168.3.156/test","bong","bong");
ps = con.prepareStatement("select * from 1");
ps.executeQuery();
     System.out.println("Connected...");
} catch(Exception ex) {
System.err.println("SQLException: " + ex.getMessage());
finally {
     try {
          con.close();
          }catch(Exception ex){;}
D:\Bong\sample>javac testLink.java
D:\Bong\sample>java testLink
SQLException: Communication link failure: java.io.IOException, underlying cause:
Unexpected end of input stream
** BEGIN NESTED EXCEPTION **
java.io.IOException
MESSAGE: Unexpected end of input stream
STACKTRACE:
java.io.IOException: Unexpected end of input stream
at com.mysql.jdbc.MysqlIO.readPacket(MysqlIO.java:1096)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:626)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:1562)
at com.mysql.jdbc.Connection.<init>(Connection.java:491)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:346)
at java.sql.DriverManager.getConnection(DriverManager.java:512)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at CreateCoffees.main(CreateCoffees.java:9)
** END NESTED EXCEPTION **
any help is very much appreciated and thanks,
dennis

Make sure that you are using the correct version of the MySQL JDBC driver. I remember getting something similar when using an older driver with an alpha of version 5 of MySQL.

MySQL connectivity Problem URGENT plz

Hi
plz can any one help me... its urgent
i need java to connect to MySQL database.with mm.mysql.Driver
the following sample code is just copied from the site and made changes in hostname, dbname and username.
classpath has been given correctly for the mm.mysql.Driver package (mysql.jar).
Thanx in advance....
Result
compilation --> success
while executing i get the following Error.
java.sql.SQLException: General Error: null
     at org.git.mm.mysql.connection.<init>(Connection.java)
     at org.git.mm.mysql.Driver.connect(Driver.java)
     at java.sql.DriverManager.getConnection(DriverManager.java: 515)
     at java.sql.DriverManager.getConnection(DriverManager.java: 197)
     at JDBCDemoCreate.getConnection(JDBCDemoCreate.java: 36)
     at JDBCDemoCreate.<init>(JDBCDemoCreate.java: 14)
java.lang.NullPointerException
     at JDBCDemoCreate.<init>(JDBCDemoCreate.java: 17)
     at JDBCDemoCreate.main(JDBCDemoCreate.java: 47)
Here is the code. can any one try this !
// JDBCDemoCreate.java
1.     import java.util.*;
2.     import java.sql.*;
3.
4.     public class JDBCDemoCreate {
5.
6.     private static final String hostname = "hostname";
7.     private static final String port = "3306";
8.     private static final String database = "dbname";
9.     private static final String username = "username";
10.     private static final String password = "";
11.
12.     public JDBCDemoCreate() {
13.
14.          Connection c = getConnection();
15.
16.          try {
17.               Statement s = (Statement)c.createStatement();
18.               s.executeUpdate("CREATE TABLE rich ( id int primary key, name char(25) )");
19.          } catch ( Exception e ) {
20.               e.printStackTrace();
21.          }
22.
23.     }
24.
25.     private Connection getConnection() {
26          // Register the driver using Class.forName()
27.          try {
28.               Class.forName("org.gjt.mm.mysql.Driver").newInstance();
29.          } catch ( Exception e ) {
30.               e.printStackTrace();
31.          }
32.
33.          // ask the DriverManager for a connection to the database
34.          Connection conn = null;
35.          try {
36.               conn = DriverManager.getConnection("jdbc:mysql://" + hostname +
37.                                                                      ":"+ port +"/" + database +
38.                                                                      "?user=" + username +
39.                                                                      "&password=" + password );
40.          } catch (Exception e) {
41.               e.printStackTrace();
42.          }
43.          return conn;
44.     }
45.
46.     public static void main( String[] args ) {
47.          new JDBCDemoCreate();
48.     }
49.}

Hi!
You can try with this code coz, i worked with this code only and then i can talk to the database.
Connection con;
Class.forName("org.gjt.mm.mysql.Driver";
con = DriverManager.getConnection("jdbc:mysql:///db?user=root&password=");
Try it out!
Queries regarding this is welcome. Either in this forum itself or u can contact in the mail, the id is
[email protected]
Regards,
dinesh

JDBC and MySQL connectivity problem

The code i hav attached generates Connectivity exception.. the prob is with the part in bold.. can anyone help
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class testconn {
public static void main(String args[]) {
    Connection con = null;
            String serverName = "localhost:8080";
        String mydatabase = "imagedb";
        String url = "jdbc:mysql://" + serverName + "/" + mydatabase; // a JDBC url
        String username = "am";
        String password = "ta";
    try {
      Class.forName("com.mysql.jdbc.Driver");
     con= DriverManager.getConnection(url, username, password);
      if(!con.isClosed())
        System.out.println("Successfully connected to " +
          "MySQL server using TCP/IP...");
    } catch(Exception e) {
      System.err.println("Exception: " + e);
    } finally {
      try {
        if(con != null)
          con.close();
      } catch(SQLException e) {}
}

I had such issue too, and I fixed it by adding in the environment variables the CLASSPATH entry that pointed to all the directories containing the .jar needed for the applications.
for example I used jodbc folder to connect mysql database (I installed last version and I got same issue than yours and it seems to be a 'connector' issue, exactly the same issue than yours) I got something like
CLASSPATH=my root dir/the java dir/the lib dir/jodbc;my root dir/the java dir/other important libs containing .jar files;
This is what I got for the issue, still working around (at the level of mysql all is ok, ...)
Microsoft Windows XP [version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Hurukan>java ConnectJODBC brol
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at ConnectJODBC.main(ConnectJODBC.java:108)
[exception] -- la valeur de 'con' est nulle (DriverManager � retourn� une valeur
nulle)
C:\Documents and Settings\Hurukan>set
APPDATA=C:\Documents and Settings\Hurukan\Application Data
CLASSPATH=c:\Program Files\Java\jdk1.5.0_06\lib;c:\Program Files\Java\jdk1.5.0_06\dev;\c:\Program Files\Java\jdk1.5.0_06\lib\jodbc;
Here is the code that generated this exception
String dburl="jdbc:mysql://127.0.0.1/nosdisques"; // should be next passed by command line
String password="**scrambled**";
String username="**scrambled**";
Connection con=null;
Statement stmt=null;
ResultSet res=null;
String requete="";
String strToWrite="";
// Connexion � la base de donn�e
// Won't work with mysql 5.0.18, mysql connector 3.51.12 is installed [???]
// Previous tests with 5.0.18 were running good, that has started with the last os restoration (and the connector was different of course...)
// tried to retreive older version of the mysql connector
try
Class.forName("com.mysql.jdbc.Driver").newInstance();
con=DriverManager.getConnection(dburl,username,password);
System.out.println("Nous sommes connect\u201as \u2026 la base " + con.getCatalog());
catch(SQLException sqlex)
System.out.println("[sqlexception]\n");
System.exit(3);
catch(Exception ex)
ex.printStackTrace();
if(con == null)
System.out.println("[exception] -- la valeur de 'con' est nulle (DriverManager \u2026 retourn\u201a une valeur nulle)\n");
System.exit(4);
System.out.println("Impossible to join database, access denied\n");
System.out.println("Verify settings (mysqld or firewall)\n"); System.exit(2);
Maybe the drivers used (last one: connector/j 3.1.12). The .jar file is in the %classpath% directory c:\Program Files\Java\jdk1.5.0_06\lib.
Can't really understand why this code won't run anymore, ...
I took a look on the other computer where the same code is running ok.
These are the differences:
mysql server is 5.0.18 on the other computer the version is 3.23.41
mysql connector is 3.51.12 on the other computer the version is 3.0.10
access rights are the same because the database is the dumped one from 3.23.41 to 5.0.18, and I'm quite good with the dbms management (I'm IT developper in fact, trying to take over java technology ;) )
in this case this is not a sql error but java error.
the jar file is set to the %classpath% folder on both computers
I copied the jar from the other computer, removing the new .jar file and... it failed, exactly the same issue
Still working around, ...
Dimitri

Auto mySQL connectivity(Username and Password)

Hey guys!
Good Day!
I have something to ask if possible to java and mySQL connectivity.
I have project that connects to mysql but im using this:
"+con1 = DriverManager.getConnection("jdbc:mysql://localhost/POS_Database","root", "12345");+"
Now, how to auto config the mysql connection not setting the username and password in the project? It configure whatever the settings of mySQL (username and password).

you will have to have the user name and password someware. If not in the code. You casn put them in a file and read it in the code.
Another thing that you can do is to make every user account of your software a valid user in the database. So when the user logs in to software users user name and the password is what you have to use to connect to database. But that will create a bit of a administrative overhead and also it will make it deficult to use connection pooling.

Mac OS X MySQL Connect throws Unexpected end of input stream

With java version 1.4.2_05 I'm attempting to run an application which retrieves information from a MySQL database version 4.1 on Mac OS X Panther 10.3.6 The application operates without error on Windows and Linux using MySQL v4.0. Relevant Code appears below..
          private static final String DRIVER = "com.mysql.jdbc.Driver";
     private static final String URL = "jdbc:mysql://localhost:3306";
     boolean openConnection() throws SQLException, DatabaseException {
          try {
               if (con == null) {
                    StringBuffer sb = new StringBuffer(URL);
                    sb.append("/").append(getDatabase());
                    Class.forName(DRIVER);
                    /* Failure occurs here while calling getConnection on the
                    DriverManager class. */
                    con = DriverManager.getConnection(sb.toString(), getUser(), getPassword());
          } catch(SQLException sle) {
               sle.printStackTrace();
     } But on Mac X I'm seeing an exception thrown.
java.sql.SQLException: Communication link failure: java.io.IOException, underlying cause:
Unexpected end of input stream
** BEGIN NESTED EXCEPTION **
java.io.IOException
MESSAGE: Unexpected end of input stream
STACKTRACE:
java.io.IOException: Unexpected end of input stream
        at com.mysql.jdbc.MysqlIO.readPacket(MysqlIO.java:1096)
        at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:626)
        at com.mysql.jdbc.Connection.createNewIO(Connection.java:1562)
        at com.mysql.jdbc.Connection.<init>(Connection.java:491)
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)
        at java.sql.DriverManager.getConnection(DriverManager.java:512)
        at java.sql.DriverManager.getConnection(DriverManager.java:171)I have checked to see that the proper permissions are established in the database. I've used the GRANT statement etc. It's unclear to me why I am having difficulty with the newer MySQL on Mac OS X. Any feedback is appreciated thanks.

I managed to solve this by having the MySQL server run as a service rather than attempting to start it via the application. So now the application can retrieve from the database without error.

Problem in mysql connectivity

Hi friends
i have connect the java program using mySQL. Every thing is going fine, but when i use
rs.moveToInsertRow()
rs.updateString()
rs.insertRow()
there is a exception occurs.
I have created the Statement Object using
ResultSet.TYPE_SCROLL_INSENSITIVE
ResultSet.CONCUR_UPDATABLE
Plz Help me
Thanx

You didn't share the exception information with us so really it's hard to tell. There could be a large number of things wrong, for example you could be failing to provide a value for a column that cannot be null.
As a guess though I would say that you should be aware that asking for an updatable cursor is a request not a command. You are requesting an updatable cursor and the database/driver MAY return an updatable cursor or it MAY NOT. There are some DB/driver dependent factors as to whether a cursor will be updatable or not. These factors include thiings like often you must select the primary key as part of the result set, that you most often can't use JOINs, other factors may apply. Anyway look into that.

Database (MySQL) connection error

Can someone please tell me what I have to do to either the MySQL database or the code in order for this to work? The app will not connect to the database. The URL is correct, I have pasted the errors. Thanks so much for the help. I know errors arent code but that's the only way I could exceed the 5000 limit.
init: deps-jar: Compiling 3 source files to C:\Users\pberardi\Documents\901A\IT494\Code Drop\HTTI2.zip\HTTI2\build\classes Note: C:\Users\pberardi\Documents\901A\IT494\Code Drop\HTTI2.zip\HTTI2\src\htti2\RowSorterToStringConverter.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. compile: run: [TopLink Info]: 2009.01.21 01:40:38.221--ServerSession(25488452)--TopLink, version: Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007)) Jan 21, 2009 1:40:38 PM org.jdesktop.application.Application$1 run SEVERE: Application class htti2.HTTI2App failed to launch Local Exception Stack: Exception [TOPLINK-4002] (Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))): oracle.toplink.essentials.exceptions.DatabaseException Internal Exception: java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) Error Code: 1045 at oracle.toplink.essentials.exceptions.DatabaseException.sqlException(DatabaseException.java:305) at oracle.toplink.essentials.sessions.DefaultConnector.connect(DefaultConnector.java:102) at oracle.toplink.essentials.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:184) at oracle.toplink.essentials.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:582) at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:280) at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:229) at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:93) at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:126) at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:120) at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:91) at htti2.EmpInfoView.initComponents(EmpInfoView.java:402) at htti2.EmpInfoView.<init>(EmpInfoView.java:40) at htti2.HTTI2App.startup(HTTI2App.java:19) at org.jdesktop.application.Application$1.run(Application.java:171) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) Edited by: pberardi1 on Jan 22, 2009 6:41 PM

pberardi1 wrote:
Internal Exception: java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)
Error Code: 1045This suggests that you are trying to connect to the database with wrong/no password,
Try and see if you can connect to your server with a statement like,
mysql -uroot -p<password>Hope you find more relevant material here

Weblogic8.1 and mysql connection failure, please help

Pardon me for repeating this topic. I have spent 2 days on this but still ended
up with failure.
The similar configuration works very well under wls7.0.
It should not be a problem of jdbc driver or its classpath setting, since the
system console say "successful..."
But when I try to access jsp and servlets, it always throws execeptions. All projects
run successfully under wls7.0 don't work.
Please give me some advice, thanks in advance.
The following is my connection pool setting found in config.xml:
<JDBCConnectionPool DriverName="com.mysql.jdbc.Driver"
Name="MySQLConnectionPool" Password="{3DES}aMsyd4ZSbSg="
Properties="user=root" Targets="cgServer" URL="jdbc:mysql://localhost/userdb"/>
<JDBCTxDataSource EnableTwoPhaseCommit="true"
JNDIName="MySQLDataSource" Name="MySQLDataSource"
PoolName="MySQLConnectionPool" Targets="cgServer"/>
The screen shot of the exceptions is as below:
<2003-8-21 ÏÂÎç17Ê±14·Ö08Ãë EST> <Notice> <WebLogicServer> <BEA-000355> <Thread
"ListenThread.Default" listening on port 7001, ip address *.*>
java.lang.NoClassDefFoundError: weblogic/jdbc/wrapper/PoolConnection
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:502)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12
3)
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(Generic
ClassLoader.java:476)
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClass
Loader.java:181)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClass
Loader.java:223)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:217)
at weblogic.utils.classfile.utils.CodeGenerator.generateClass(CodeGenera
tor.java:71)
at weblogic.utils.wrapper.WrapperFactory.generateWrapperClass(WrapperFac
tory.java:331)
at weblogic.utils.wrapper.WrapperFactory.getWrapperClass(WrapperFactory.
java:167)
at weblogic.jdbc.wrapper.JDBCWrapperFactory.getWrapper(JDBCWrapperFactor
y.java:66)
at weblogic.jdbc.pool.Driver.allocateConnection(Driver.java:242)
at weblogic.jdbc.pool.Driver.connect(Driver.java:158)
at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:444)
at weblogic.jdbc.jts.Driver.connect(Driver.java:138)
at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSour
ce.java:298)
at jsp_servlet.__testmysql._jspService(__testmysql.java:129)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:1053)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:387)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:431)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:305)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:6310)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3622)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2569)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
<2003-8-21 ÏÂÎç17Ê±14·Ö42Ãë EST> <Error> <HTTP> <BEA-101017> <[ServletContext(id
=2960804,name=forum,context-path=/forum)] Root cause of ServletException.
java.sql.SQLException: Cannot obtain connection: driverURL = jdbc:weblogic:pool:
MySQLConnectionPool, props = {enableTwoPhaseCommit=false, jdbcTxDataSource=true,
connectionPoolID=MySQLConnectionPool, dataSourceName=MySQLDataSource}.
Nested Exception: java.lang.RuntimeException: Failed to Generate Wrapper Class
at weblogic.utils.wrapper.WrapperFactory.createWrapper(WrapperFactory.ja
va:141)
at weblogic.jdbc.wrapper.JDBCWrapperFactory.getWrapper(JDBCWrapperFactor
y.java:73)
at weblogic.jdbc.pool.Driver.allocateConnection(Driver.java:242)
at weblogic.jdbc.pool.Driver.connect(Driver.java:158)
at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:444)
at weblogic.jdbc.jts.Driver.connect(Driver.java:138)
at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSour
ce.java:298)
at jsp_servlet.__testmysql._jspService(__testmysql.java:129)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:1053)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:387)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:431)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:305)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:6310)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3622)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2569)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
at weblogic.jdbc.jts.Driver.wrapAndThrowSQLException(Driver.java:395)
at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:448)
at weblogic.jdbc.jts.Driver.connect(Driver.java:138)
at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSour
ce.java:298)
at jsp_servlet.__testmysql._jspService(__testmysql.java:129)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:1053)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:387)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:431)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:305)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:6310)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3622)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2569)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
>

1. This assumes that you have downloaded the mysql database and configured it and started
it by running mysqld. In my case, I installed it in d:/mysql.
2. It also assumes that you have configured a user on the database.
I configured a user "test" with password "test" on the database "mysql" on "localhost" using
mysql --user=root mysql
grant all privileges on *.* to test@localhost identified by 'test' with grant option;
3. It assumes that you have downloaded the Connector/J zip file and pulled out the jar file.
In my case, I renamed it and copied it to d:/mysql/lib/jdbc.jar.
4. It is absolutely necessary that you put the jar file in your server classpath. It won't
work without doing that. Then I booted the server.
5. I used the WLS 8.1 console to configure the connection pool and associated data source.
In my case, they look like the following:
<JDBCConnectionPool DriverName="org.gjt.mm.mysql.Driver"
Name="mysql" Password="test"
Properties="user=test"
Targets="myserver"
TestTableName="SQL SELECT 1"
URL="jdbc:mysql://localhost:3306/mysql"/>
<JDBCTxDataSource
JNDIName="myDataSource"
Name="myDataSource"
PoolName="mysql"
Targets="myserver"/>
Note that the console uses the old class name for the driver. There is a new class name but
the old name still exists and we figured it would cover folks using the old and new classes.
6. I'll attach a client program that looks up the datasource associated with the connection pool,
gets a connection, and does some stuff with the connection.
The user/password combination must have security priviledges in WLS to reserve a connection
on the pool.
The code for this program is taken almost entirely from the WLS JDBC documentation.
This is all pretty standard stuff.
"Roland" <[email protected]> wrote in message news:[email protected]...
>
Pardon me for repeating this topic. I have spent 2 days on this but still ended
up with failure.
The similar configuration works very well under wls7.0.
It should not be a problem of jdbc driver or its classpath setting, since the
system console say "successful..."
But when I try to access jsp and servlets, it always throws execeptions. All projects
run successfully under wls7.0 don't work.
Please give me some advice, thanks in advance.
The following is my connection pool setting found in config.xml:
<JDBCConnectionPool DriverName="com.mysql.jdbc.Driver"
Name="MySQLConnectionPool" Password="{3DES}aMsyd4ZSbSg="
Properties="user=root" Targets="cgServer" URL="jdbc:mysql://localhost/userdb"/>
<JDBCTxDataSource EnableTwoPhaseCommit="true"
JNDIName="MySQLDataSource" Name="MySQLDataSource"
PoolName="MySQLConnectionPool" Targets="cgServer"/>
The screen shot of the exceptions is as below:
<2003-8-21 ÏÂÎç17Ê±14·Ö08Ãë EST> <Notice> <WebLogicServer> <BEA-000355> <Thread
"ListenThread.Default" listening on port 7001, ip address *.*>
java.lang.NoClassDefFoundError: weblogic/jdbc/wrapper/PoolConnection
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:502)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12
3)
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(Generic
ClassLoader.java:476)
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClass
Loader.java:181)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClass
Loader.java:223)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:217)
at weblogic.utils.classfile.utils.CodeGenerator.generateClass(CodeGenera
tor.java:71)
at weblogic.utils.wrapper.WrapperFactory.generateWrapperClass(WrapperFac
tory.java:331)
at weblogic.utils.wrapper.WrapperFactory.getWrapperClass(WrapperFactory.
java:167)
at weblogic.jdbc.wrapper.JDBCWrapperFactory.getWrapper(JDBCWrapperFactor
y.java:66)
at weblogic.jdbc.pool.Driver.allocateConnection(Driver.java:242)
at weblogic.jdbc.pool.Driver.connect(Driver.java:158)
at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:444)
at weblogic.jdbc.jts.Driver.connect(Driver.java:138)
at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSour
ce.java:298)
at jsp_servlet.__testmysql._jspService(__testmysql.java:129)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:1053)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:387)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:431)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:305)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:6310)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3622)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2569)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
<2003-8-21 ÏÂÎç17Ê±14·Ö42Ãë EST> <Error> <HTTP> <BEA-101017> <[ServletContext(id
=2960804,name=forum,context-path=/forum)] Root cause of ServletException.
java.sql.SQLException: Cannot obtain connection: driverURL = jdbc:weblogic:pool:
MySQLConnectionPool, props = {enableTwoPhaseCommit=false, jdbcTxDataSource=true,
connectionPoolID=MySQLConnectionPool, dataSourceName=MySQLDataSource}.
Nested Exception: java.lang.RuntimeException: Failed to Generate Wrapper Class
at weblogic.utils.wrapper.WrapperFactory.createWrapper(WrapperFactory.ja
va:141)
at weblogic.jdbc.wrapper.JDBCWrapperFactory.getWrapper(JDBCWrapperFactor
y.java:73)
at weblogic.jdbc.pool.Driver.allocateConnection(Driver.java:242)
at weblogic.jdbc.pool.Driver.connect(Driver.java:158)
at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:444)
at weblogic.jdbc.jts.Driver.connect(Driver.java:138)
at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSour
ce.java:298)
at jsp_servlet.__testmysql._jspService(__testmysql.java:129)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:1053)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:387)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:431)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:305)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:6310)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3622)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2569)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
at weblogic.jdbc.jts.Driver.wrapAndThrowSQLException(Driver.java:395)
at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:448)
at weblogic.jdbc.jts.Driver.connect(Driver.java:138)
at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSour
ce.java:298)
at jsp_servlet.__testmysql._jspService(__testmysql.java:129)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:1053)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:387)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:431)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:305)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:6310)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3622)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2569)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
>[mysql.java]

Mysql connect to java

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