Webservice using mysql connection
I have made a webservice which use a mysql connection ..........
but unfortunately it doesnt work do I need a special configuration?
my statement for connecting mysql is exactly this :
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
String url ="jdbc:mysql://shahghol-252d3b:3306/university?user=root&password=1";
con = DriverManager.getConnection(url);
st = con.createStatement();
st.executeQuery("UPDATE status SET status.status='graduated' WHERE status.studentId='"+ ID +"'" );
st.close();
con.close();
} catch (Exception ex) {
System.out.print("error");
can you help me??
Please refer to
http://dev.mysql.com/tech-resources/articles/connection_pooling_with_connectorj.html
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Date: Wed, 3 Jun 2009 15:43:02 -0600
From: [email protected]
To: [email protected]
Subject: PHP and MySQL Connection problem
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Hello,
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<data-source class="com.evermind.sql.DriverManagerDataSource"
connection-driver="org.gjt.mm.mysql.Driver"
ejb-location="jdbc/MG_DBDS"
inactivity-timeout="30"
location="jdbc/MG_DBCoreDS"
name="MG_DBDS"
password=""
pooled-location="jdbc/MG_DBPooledDS"
url="jdbc:mysql://127.0.0.1:3306/test"
username="root"
xa-location="jdbc/xa/MG_DBXADS"/>
</data-sources>
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I know the query is good because it works all other times just not after about 8 hours.
--Z3r0CooLHey,
Thanks for the responces. For the connection pooling I would open 5 connections and keep them open. So i though maybe after 8 hours after not being used they would timeout. Thats why i turned off conection pooling and create a new connection each time. Anyways i'll post the code below incase i made a mistake somewhere.
package com.softnet.database;
/************************ DatabaseControler **************************/
import java.sql.*;
import java.util.*;
import com.softnet.database.DatabaseConnectionPool;
import com.softnet.database.DatabaseSettings;
public class DatabaseController
implements DatabaseListener
//Used to make sure the database driver is loaded
private boolean databaseDriverState = false;
//Used to store a database connection
private Connection databaseConnection = null;
//If to user connection pooling or not
private boolean useConnectionPooling = false;
//Used to hold the connection pool varible
private DatabaseConnectionPool connectionPool = null;
//Used to store database settings
private DatabaseSettings databaseSettings;
//Used to hold the DatabaseController listeners
private List databaseControllerListeners = new ArrayList();
//min number of connections for connection pool
private int minNumberOfConnections = 1;
//max number of connections for connection pool -1 is unlimited
private int maxNumberOfConnections = -1;
//DatabaseController Constructors
public DatabaseController(DatabaseSettings databaseSettings)
this.databaseSettings = databaseSettings;
databaseDriverState = loadDatabaseDriver(databaseSettings.getDatabaseDriver());
public DatabaseController(DatabaseSettings databaseSettings, boolean useConnectionPooling, int minNumberOfConnections, int maxNumberOfConnections)
this.databaseSettings = databaseSettings;
this.useConnectionPooling = useConnectionPooling;
this.minNumberOfConnections = minNumberOfConnections;
this.maxNumberOfConnections = maxNumberOfConnections;
if(useConnectionPooling == true)
connectionPool = new DatabaseConnectionPool(databaseSettings, minNumberOfConnections, maxNumberOfConnections);
connectionPool.addDatabaseListener(this);
else
databaseDriverState = loadDatabaseDriver(databaseSettings.getDatabaseDriver());
public DatabaseController() {}
//Database Settings Get/Set
public DatabaseSettings getDatabaseSettings()
return databaseSettings;
public void setDatabaseSettings(DatabaseSettings databaseSettings)
this.databaseSettings = databaseSettings;
//Connection Pooling Get/Set
public boolean getConnectionPooling()
return useConnectionPooling;
public void setConnectionPooling(boolean useConnectionPooling, int minNumberOfConnections, int maxNumberOfConnections)
this.useConnectionPooling = useConnectionPooling;
this.minNumberOfConnections = minNumberOfConnections;
this.maxNumberOfConnections = maxNumberOfConnections;
if(useConnectionPooling == true)
if(connectionPool == null)
connectionPool = new DatabaseConnectionPool(databaseSettings, minNumberOfConnections, maxNumberOfConnections);
connectionPool.addDatabaseListener(this);
else
if(connectionPool != null)
connectionPool.destroyConnections();
connectionPool.removeDatabaseListener(this);
connectionPool = null;
//Return if there connected
public boolean isConnected()
boolean isConnected;
if(databaseConnection != null)
isConnected = true;
else
isConnected = false;
return isConnected;
//Used to connect to database or get a connection for the connection pool
public void connect()
if(databaseDriverState == false)
databaseDriverState = loadDatabaseDriver(databaseSettings.getDatabaseDriver());
//If we dont have a current connection, make one
if(databaseConnection == null && databaseDriverState == true)
if(useConnectionPooling == false)
try
databaseConnection = DriverManager.getConnection(databaseSettings.getDatabaseURL(), databaseSettings.getUserName(), databaseSettings.getUserPassword());
catch (SQLException sqle)
//Raise event
raiseDatabaseEvent("DatabaseController: Error connecting to database. \nERROR: " + sqle.getMessage());
databaseConnection = null;
else
databaseConnection = connectionPool.getConnection();
//Used to disconnect from the database or give back the connection to the connection pool
public void disconnect()
if(databaseConnection != null)
if(useConnectionPooling == false)
try
//Close DB Connection
databaseConnection.close();
catch(SQLException ignore) {}
finally
databaseConnection = null;
else
connectionPool.returnConnection(databaseConnection);
databaseConnection = null;
public ResultSet executeDatabaseQuery(String sSQL)
ResultSet databaseResult = null;
if(databaseConnection != null)
try
Statement databaseStatement = databaseConnection.createStatement();
databaseResult = databaseStatement.executeQuery(sSQL);
catch(SQLException sqle)
//Raise event
raiseDatabaseEvent("DatabaseController: Error executing database query.\nSQL: " + sSQL + "\nERROR: " + sqle.getMessage());
return databaseResult;
public int executeDatabaseUpdate(String sSQL)
int rowsAffected = -1;
if(databaseConnection != null)
try
Statement databaseStatement = databaseConnection.createStatement();
rowsAffected = databaseStatement.executeUpdate(sSQL);
catch(SQLException sqle)
//Raise event
raiseDatabaseEvent("DatabaseController: Error executing database update.\nSQL: " + sSQL + "\nERROR: " + sqle.getMessage());
return rowsAffected;
//Used to load the Database Driver
private boolean loadDatabaseDriver(String databaseDriver)
boolean driverLoaded;
if(databaseDriver.equals("") == false)
try
//Load Database Driver
Class.forName(databaseDriver).newInstance();
driverLoaded = true;
catch (Exception e)
//Raise event
raiseDatabaseEvent("DatabaseController: Error loading database driver. \nERROR: " + e.getMessage());
driverLoaded = false;
else
driverLoaded = false;
return driverLoaded;
//Wrap the DatabaseConnectionPool Error to the DatabaseController
public void databaseEventOccurred(DatabaseEvent de)
raiseDatabaseEvent(de.getErrorMessage());
//Event Handling Code
//Used to add database listeners (Its sync'd so you can change the listeners when firing an event)
public synchronized void addDatabaseListener(DatabaseListener databaseControllerListener)
databaseControllerListeners.add(databaseControllerListener);
//Used to remove a listener from the list (Its sync'd so you can change the listeners when firing an event)
public synchronized void removeDatabaseListener(DatabaseListener databaseControllerListener)
databaseControllerListeners.remove(databaseControllerListener);
//Used to send the raise event to the listeners
private synchronized void raiseDatabaseEvent(String databaseError)
DatabaseEvent databaseEvent = new DatabaseEvent(this, databaseError);
Iterator listeners = databaseControllerListeners.iterator();
while(listeners.hasNext())
DatabaseListener listener = (DatabaseListener) listeners.next();
listener.databaseEventOccurred(databaseEvent);
/********************* DatabaseConnectionPool **************/
package com.softnet.database;
import java.io.*;
import java.sql.*;
import java.util.*;
import com.softnet.database.*;
import com.softnet.database.DatabaseSettings;
public class DatabaseConnectionPool
//min number of connections
private int minNumberOfConnections = 1;
//max number of connections -1 is unlimited
private int maxNumberOfConnections = -1;
//Store the connections
protected Hashtable databaseConnections = null;
//Database Info
protected DatabaseSettings databaseSettings;
//to hold Driver state
private boolean databaseDriverState = false;
//To hold connection checker
private DatabaseConnectionCheck connectionChecker = null;
//Used to hold the DatabaseConnectionPool listeners
private List databaseConnectionPoolListeners = new ArrayList();
public DatabaseConnectionPool(DatabaseSettings databaseSettings, int minNumberOfConnections, int maxNumberOfConnections)
this.databaseSettings = databaseSettings;
this.minNumberOfConnections = minNumberOfConnections;
this.maxNumberOfConnections = maxNumberOfConnections;
//Load Driver
databaseDriverState = loadDatabaseDriver(databaseSettings.getDatabaseDriver());
//Create connection
createConnections();
public DatabaseConnectionPool(int minNumberOfConnections, int maxNumberOfConnections)
this.minNumberOfConnections = minNumberOfConnections;
this.maxNumberOfConnections = maxNumberOfConnections;
//Database Settings Get/Set
public DatabaseSettings getDatabaseSettings()
return databaseSettings;
public void setDatabaseSettings(DatabaseSettings databaseSettings)
this.databaseSettings = databaseSettings;
//Driver State Get
public boolean getDatabaseDriverState()
return databaseDriverState;
public void createConnections()
if(databaseDriverState == false)
databaseDriverState = loadDatabaseDriver(databaseSettings.getDatabaseDriver());
//Create all connections and load the minimum in the Hashtable
if(databaseConnections == null)
if(databaseDriverState == true && minNumberOfConnections != 0)
databaseConnections = new Hashtable();
for(int i = 0; i < minNumberOfConnections; i++)
try
databaseConnections.put(DriverManager.getConnection(databaseSettings.getDatabaseURL(), databaseSettings.getUserName(), databaseSettings.getUserPassword()), Boolean.FALSE);
catch(SQLException sqle)
//Problem break loop and destroy any connections
destroyConnections();
//Raise event
raiseDatabaseEvent("DatabaseConnectionPool: Error creating database connections. \nERROR: " + sqle.getMessage());
break;
//If no connection check exists create one
if(connectionChecker == null)
connectionChecker = new DatabaseConnectionCheck(this);
connectionChecker.start();
public Connection getConnection()
Connection connection = null;
boolean errorWithConnection = false;
Enumeration connections = databaseConnections.keys();
synchronized (databaseConnections)
while(connections.hasMoreElements())
errorWithConnection = false;
connection = (Connection) connections.nextElement();
Boolean state = (Boolean) databaseConnections.get(connection);
//If connection is not used, use it.
if(state == Boolean.FALSE)
try
connection.setAutoCommit(true);
catch(SQLException e)
//Problem with connection remove connection and replace it
databaseConnections.remove(connection);
try
connection = DriverManager.getConnection(databaseSettings.getDatabaseURL(), databaseSettings.getUserName(), databaseSettings.getUserPassword());
catch(SQLException sqle)
errorWithConnection = true;
if(errorWithConnection == false)
// Update the Hashtable to show this one's taken
databaseConnections.put(connection, Boolean.TRUE);
// Return the connection
return connection;
//All connections being used check to max to see if we can make a new one
if(maxNumberOfConnections == -1 || maxNumberOfConnections > databaseConnections.size())
try
connection = DriverManager.getConnection(databaseSettings.getDatabaseURL(), databaseSettings.getUserName(), databaseSettings.getUserPassword());
catch(SQLException sqle)
errorWithConnection = true;
if(errorWithConnection == false)
databaseConnections.put(connection, Boolean.TRUE);
return connection;
//If not connections free and max connections reached wait for a free connection
return getConnection();
public void returnConnection(Connection connection)
boolean errorWithConnection = false;
//Make sure connection still works
try
connection.setAutoCommit(true);
catch(SQLException e)
//Problem with connection remove connection and replace it
databaseConnections.remove(connection);
try
connection = DriverManager.getConnection(databaseSettings.getDatabaseURL(), databaseSettings.getUserName(), databaseSettings.getUserPassword());
catch(SQLException sqle)
errorWithConnection = true;
if(errorWithConnection == false)
databaseConnections.put(connection, Boolean.FALSE);
public void destroyConnections()
Connection connection = null;
if(databaseConnections != null)
//Close all connections
Enumeration connections = databaseConnections.keys();
while (connections.hasMoreElements())
connection = (Connection) connections.nextElement();
try
connection.close();
catch(SQLException ignore) {}
//Free up hashtable
databaseConnections = null;
private boolean loadDatabaseDriver(String databaseDriver)
boolean driverLoaded;
if(databaseDriver.equals("") == false)
try
//Load Database Driver
Class.forName(databaseDriver);
driverLoaded = true;
catch (ClassNotFoundException cnfe)
//Raise event
raiseDatabaseEvent("DatabaseController: Error loading database driver. \nERROR: " + cnfe.getMessage());
driverLoaded = false;
else
driverLoaded = false;
return driverLoaded;
//Event Handling Code
//Used to add database listeners (Its sync'd so you can change the listeners when firing an event)
public synchronized void addDatabaseListener(DatabaseListener databaseConnectionPoolListener)
databaseConnectionPoolListeners.add(databaseConnectionPoolListener);
//Used to remove a listener from the list (Its sync'd so you can change the listeners when firing an event)
public synchronized void removeDatabaseListener(DatabaseListener databaseConnectionPoolListener)
databaseConnectionPoolListeners.remove(databaseConnectionPoolListener);
//Used to send the raise event to the listeners
private synchronized void raiseDatabaseEvent(String databaseError)
DatabaseEvent databaseEvent = new DatabaseEvent(this, databaseError);
Iterator listeners = databaseConnectionPoolListeners.iterator();
while(listeners.hasNext())
DatabaseListener listener = (DatabaseListener) listeners.next();
listener.databaseEventOccurred(databaseEvent);
class DatabaseConnectionCheck extends Thread
private DatabaseConnectionPool connectionPool;
DatabaseConnectionCheck(DatabaseConnectionPool connectionPool)
this.connectionPool = connectionPool;
public void run()
try
while(true)
//check threads every 30 seconds
this.sleep(300000);
if(connectionPool.databaseConnections != null)
Connection connection = null;
Enumeration connections = connectionPool.databaseConnections.keys();
synchronized (connectionPool.databaseConnections)
while(connections.hasMoreElements())
connection = (Connection) connections.nextElement();
Boolean state = (Boolean) connectionPool.databaseConnections.get(connection);
//If connection is not used, use it.
if(state == Boolean.FALSE)
try
connection.setAutoCommit(true);
catch(SQLException e)
//Problem with connection remove connection and replace it
connectionPool.databaseConnections.remove(connection);
try
connection = DriverManager.getConnection(connectionPool.databaseSettings.getDatabaseURL(), connectionPool.databaseSettings.getUserName(), connectionPool.databaseSettings.getUserPassword());
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connection = null;
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if(connection != null)
connectionPool.databaseConnections.put(connection, Boolean.FALSE);
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Basicly the why it works is the connection pool hold the database connections. When the user needs a connection they use the database controller to request a connection (By create a instance and called the connect() method) and the connection is either created or grabed from the connection pool. After the user is done with the connection they call the disconnect() method which closes the connection or returns it to the connection pool.
--Z3r0CooL -
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org.apache.wsif.WSIFException: parameters
06/09/29 13:42:21 at org.apache.wsif.providers.ejb.WSIFOperation_EJB.executeRequestResponseOperation(WSIFOperation_EJB.java:1259)
06/09/29 13:42:21 at org.apache.wsif.base.WSIFClientProxy.invoke(WSIFClientProxy.java:339)
06/09/29 13:42:21 at $Proxy3.getOrderList(Unknown Source)
I am trying to expose a Stateless Session EJB as a WebService, which contains a method called getOrderList(). This method returns an array of a complex type (Java Bean).
I am, however, able to succesfully access the WebService using the SOAP/HTTP protocol.
My client code is as follows:
WSIFServiceFactory factory = WSIFServiceFactory.newInstance();
WSIFService service = factory.getService("<path to wsdl>", null, null, "http://sample.com/", "OrderService");
orderService = (OrderService) service.getStub("WsifEjb", OrderService.class);
Not sure what am I missing here. If any further information is required in order to resolve this, please let me know.
Thanks,You are trying to get 2 databases connected... so, you need to insure that FDEV can find and connect to ABCD.
So, from your FDEV database server, you can do 2 things (from command prompt):
1* tnsping ABCD (this will validate that the entry exists in your tnsnames.ora on your FDEV server, and that a valid listener can be found on remote server)
when above command succeeds:
2* sqlplus apps/appsdev@ABCD;
when you have established the connection, then you are SURE that your can connect ABCD database from FDEV database server. It will also validate the username / password combination, create session privilige, account not locked, etc.....
Please check the above, and post here the results.
HTH,
Thierry -
Error in extracting data from SAP using mySQL server database
Hello Experts.
We are now using MySQL server 2005 database for Nakisa OrgChart. We have already configured the SAPExtractor settings. Source-SAP has been provided and Test connection to destination database is successful. We manually created the database ExtractedData and AnalyticData in the MySQL management studio.
We are getting the error upon starting the extraction
Processing Function Read Table Function/BAPI Downloading Tables Organizational Assignment
No Tables were downloaded for Read Table Function/BAPI . Function is flagged as critical.Terminating Extraction.
Processing Stopped ! ! !
Downloading from SAP completed.
Processing Completed.
From CDS.log
ERROR: Sap Authentication : Source {SAP.Connector}: Message {An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)}
We would appreciate some assistance on this configuration
Thanks,
Angelo
Accenture inc.
SAP BasisHello Luke,
We have not done any modification of the downloadschema file. We receive message: The XML page cannot be displayed
Cannot view XML input using style sheet. Please correct the error and then click the Refresh button, or try again later. when we open the file.
The SAP account we used has SAP_AlLL, SAP_NEW authorizations. Are these authorizations sufficient to perform the data extraction?
Thanks,
Angelo -
NEED HELP! can't create mysql connection in DW MX 2004
I re-format my computer last week and after reformatting i
install my PHP Triad and Dreamweaver MX 2004, but i can't create
mysql connection using DW wizard, i already follow the step:
1. create / manage site
2. choose document type
3. set up testing server ( i use php mysql @ localhost)
and when i create new connection (fill the hostname,
username, password, and select databases) it failed and show
message "unidentified error occur".
it never happen before (before i re format my computer).
can anyone help me how to solve this problem.
sorry for my bad english i came from Indonesia,
thx before
rgrds
zhastroI re-format my computer last week and after reformatting i
install my PHP Triad and Dreamweaver MX 2004, but i can't create
mysql connection using DW wizard, i already follow the step:
1. create / manage site
2. choose document type
3. set up testing server ( i use php mysql @ localhost)
and when i create new connection (fill the hostname,
username, password, and select databases) it failed and show
message "unidentified error occur".
it never happen before (before i re format my computer).
can anyone help me how to solve this problem.
sorry for my bad english i came from Indonesia,
thx before
rgrds
zhastro -
How to call webservice using standalone application
Hi,
Actually i am trying to connect with one free webservice using client. but i am uanble to get the result and it is throwing the Exception.Exception is Execution failed. Exception: java.net.ConnectException: Connection timed out: connection reset
i am using the following code.
import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
import org.apache.axis.encoding.XMLType;
import org.apache.axis.utils.Options;
import javax.xml.namespace.QName;
import java.io.*;
public class AddFunctionClient {
public static void main(String [] args) {
try {
String endpoint = "http://www.startvbdotnet.com/web/sample2.asmx?wsdl";
System.setProperty("http.proxyHost", proxyHost);
System.setProperty("http.proxyPort", portNumber);
Service service = new Service();
Call call = (Call) service.createCall();
call.setTargetEndpointAddress( new java.net.URL(endpoint) );
call.setOperationName(new QName(endpoint, "add"));
System.out.println("connected");
System.out.println("value is"+call.invoke(new Object[]{new Integer(10),new Integer(20)}));
} catch (Exception e) {
System.err.println("Execution failed. Exception: " + e);
can any one help on thisHi,
If your JAVA Application is Web based application, you can expose it as Webservice.
JAVA People will pick the data from Dbase using their application and will send the data to XI by using our XI Details like Message Interface and Data type structure and all.
So we can Use SOAP Adapter or HTTP in XI..
If you use HTTP for sending the data to XI means there is no need of Adapter also. why because HTTP sits on ABAP Stack and can directly communicate with the XI Integration Server Directly
If you are dealing with the Webservice and SAP Applications means check this
Walkthrough - SOAP XI RFC/BAPI
REgards
Seshagiri -
Hello,
I am trying to create a mysql connection pool using the admin console. The mysql JDBC driver is located in <install_dir>/domains/domain1/lib/ext.
For Datasource Classname I use com.mysql.jdbc.jdbc2.optional.MysqlDataSource
A ping results in:
Operation 'pingConnectionPool' failed in 'resources' Config Mbean. Target exception message: Connection could not be allocated because: null, message from server: "Host 'localhost.localdomain' is not allowed to connect to this MySQL server"
When changing the URL property to localhost a ping results in:
Operation 'pingConnectionPool' failed in 'resources' Config Mbean. Target exception message: Connection object cannot be null
Any ideas about what goes wrong?
Thanks...I did a simple php test:
<?php
mysql_connect("localhost.localdomain", "user", "pass") or die(mysql_error());
echo "Connected to MySQL<br />";
?>
This results in:
Warning: mysql_connect(): Host 'localhost.localdomain' is not allowed to connect to this MySQL server in /var/www/mathesis/mambo/mysql.php on line 2
Host 'localhost.localdomain' is not allowed to connect to this MySQL server
<?php
mysql_connect("localhost", "user", "pass") or die(mysql_error());
echo "Connected to MySQL<br />";
?>
results in: Connected to MySQL
So I see two possible solutions:
1) Make the appserver use localhost instead of localhost.localdomain (specifying localhost as property doesn't work!).
2) Make MySQL accept localhost.localdomain connections.
For both possible solutions I'm searching for answers...
-Michael
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