I have created a java app to publish an MQTT message using aws iot sdk. I am able to publish messages from my local environment however get the following error when deployed to ec2.
I have added a role(AWSIoTFullAccess) to the ec2 instance but still getting this error.
How can I make this app publish messages from ec2?
c.a.s.i.c.m.AwsIotMqttConnectionListener : Connect request failure
org.eclipse.paho.client.mqttv3.MqttException: MqttException
at org.eclipse.paho.client.mqttv3.internal.ExceptionHelper.createMqttException(ExceptionHelper.java:38) ~[org.eclipse.paho.client.mqttv3-1.2.2.jar:na]
at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:736) ~[org.eclipse.paho.client.mqttv3-1.2.2.jar:na]
at java.base/java.lang.Thread.run(Thread.java:829) ~[na:na]
Caused by: java.io.IOException: WebSocket Response header: Incorrect upgrade.
at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketHandshake.receiveHandshakeResponse(WebSocketHandshake.java:162) ~[org.eclipse.paho.client.mqttv3-1.2.2.jar:na]
at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketHandshake.execute(WebSocketHandshake.java:80) ~[org.eclipse.paho.client.mqttv3-1.2.2.jar:na]
at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketSecureNetworkModule.start(WebSocketSecureNetworkModule.java:65) ~[org.eclipse.paho.client.mqttv3-1.2.2.jar:na]
at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:722) ~[org.eclipse.paho.client.mqttv3-1.2.2.jar:na]
... 1 common frames omitted
com.amazonaws.services.iot.client.mqtt.AwsIotMqttConnectionListener.onFailure Connect request failure
MqttException (0) - java.io.IOException: WebSocket Response header: Incorrect upgrade.
at org.eclipse.paho.client.mqttv3.internal.ExceptionHelper.createMqttException(ExceptionHelper.java:38)
at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:736)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.io.IOException: WebSocket Response header: Incorrect upgrade.
at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketHandshake.receiveHandshakeResponse(WebSocketHandshake.java:162)
at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketHandshake.execute(WebSocketHandshake.java:80)
at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketSecureNetworkModule.start(WebSocketSecureNetworkModule.java:65)
at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:722)
... 1 more
Error when tried to downgrade Iot SDK and Paho version to 1.1.0:
c.a.s.i.c.m.AwsIotMqttConnectionListener : Connect request failure
org.eclipse.paho.client.mqttv3.MqttException: MqttException
at org.eclipse.paho.client.mqttv3.internal.ExceptionHelper.createMqttException(ExceptionHelper.java:38) ~[org.eclipse.paho.client.mqttv3-1.1.0.jar:na]
at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:664) ~[org.eclipse.paho.client.mqttv3-1.1.0.jar:na]
at java.base/java.lang.Thread.run(Thread.java:829) ~[na:na]
Caused by: java.lang.NullPointerException: null
at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketHandshake.receiveHandshakeResponse(WebSocketHandshake.java:133) ~[org.eclipse.paho.client.mqttv3-1.1.0.jar:na]
at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketHandshake.execute(WebSocketHandshake.java:74) ~[org.eclipse.paho.client.mqttv3-1.1.0.jar:na]
at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketSecureNetworkModule.start(WebSocketSecureNetworkModule.java:77) ~[org.eclipse.paho.client.mqttv3-1.1.0.jar:na]
at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:650) ~[org.eclipse.paho.client.mqttv3-1.1.0.jar:na]
... 1 common frames omitted
com.amazonaws.services.iot.client.mqtt.AwsIotMqttConnectionListener.onFailure Connect request failure
MqttException (0) - java.lang.NullPointerException
at org.eclipse.paho.client.mqttv3.internal.ExceptionHelper.createMqttException(ExceptionHelper.java:38)
at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:664)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.NullPointerException
at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketHandshake.receiveHandshakeResponse(WebSocketHandshake.java:133)
at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketHandshake.execute(WebSocketHandshake.java:74)
at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketSecureNetworkModule.start(WebSocketSecureNetworkModule.java:77)
at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:650)
... 1 more
Related
I am using wso2 identity server 5.9.0 on my linux machine.
I am getting the error below while doing account creation.
I get message Email sent successfully, but at backend it throws error after some time and the mail is never received.
[2020-02-15 13:09:22,241] [725c9824-a414-44f4-9b4f-e5f8da8db48c] ERROR
{org.wso2.carbon.event.output.adapter.email.EmailEventAdapter} - Event
dropped at Output Adapter 'EmailPublisher' for tenant id '-1234',
Error in message format, Exception reading response
javax.mail.MessagingException: Exception reading response; nested
exception is:
java.net.SocketException: Connection timed out (Read failed)
at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:2460)
at com.sun.mail.smtp.SMTPTransport.ehlo(SMTPTransport.java:1699)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:744)
at javax.mail.Service.connect(Service.java:366)
at javax.mail.Service.connect(Service.java:246)
at javax.mail.Service.connect(Service.java:195)
at javax.mail.Transport.send0(Transport.java:254)
at javax.mail.Transport.send(Transport.java:124)
at org.wso2.carbon.event.output.adapter.email.EmailEventAdapter$EmailSender.run(EmailEventAdapter.java:306)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748) Caused by: java.net.SocketException: Connection timed out (Read failed)
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
at java.net.SocketInputStream.read(SocketInputStream.java:171)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at com.sun.mail.util.TraceInputStream.read(TraceInputStream.java:126)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
at java.io.BufferedInputStream.read(BufferedInputStream.java:265)
at com.sun.mail.util.LineInputStream.readLine(LineInputStream.java:106)
at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:2440)
... 13 more
I already made changes in output-event-adapters.xml and axis2.xml for smtp details.
Any help on this?
output-event-adapters.xml configuration is as below:
noreply#xyz.com
noreply#xyz.com
ABC.XXX.XXX.XXX
25
true
false
8
100
20000
10000
It seems like it is blocked by google. Refer to this doc
If you are using Gmail account you have to on "Allow less secure apps"
in your account.
For more info refer this
I am setting up a multi-region WSO2 APIM environment. The gateway component in the slave region is failing to connect with the API Analytics component in the Master region with the following error:
[2019-09-02 09:24:02,563] ERROR - DataEndpointConnectionWorker Error while trying to connect to the endpoint. Cannot borrow client for ssl://wso2apim-analytics-service.domain.com:7712.
org.wso2.carbon.databridge.agent.exception.DataEndpointLoginException: Cannot borrow client for ssl://wso2apim-analytics-service.domain.com:7712.
at org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker.connect(DataEndpointConnectionWorker.java:134)
at org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker.run(DataEndpointConnectionWorker.java:59)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.wso2.carbon.databridge.agent.exception.DataEndpointLoginException: Error while trying to login to the data receiver.
at org.wso2.carbon.databridge.agent.endpoint.thrift.ThriftDataEndpoint.login(ThriftDataEndpoint.java:54)
at org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker.connect(DataEndpointConnectionWorker.java:128)
... 6 more
Caused by: org.apache.thrift.transport.TTransportException: java.net.SocketTimeoutException: Read timed out
at org.apache.thrift.transport.TIOStreamTransport.flush(TIOStreamTransport.java:161)
at org.apache.thrift.TServiceClient.sendBase(TServiceClient.java:65)
at org.wso2.carbon.databridge.commons.thrift.service.secure.ThriftSecureEventTransmissionService$Client.send_connect(ThriftSecureEventTransmissionService.java:104)
at org.wso2.carbon.databridge.commons.thrift.service.secure.ThriftSecureEventTransmissionService$Client.connect(ThriftSecureEventTransmissionService.java:95)
at org.wso2.carbon.databridge.agent.endpoint.thrift.ThriftDataEndpoint.login(ThriftDataEndpoint.java:47)
... 7 more
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
at java.net.SocketInputStream.read(SocketInputStream.java:171)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at sun.security.ssl.InputRecord.readFully(InputRecord.java:465)
at sun.security.ssl.InputRecord.read(InputRecord.java:503)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:975)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1367)
at sun.security.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:750)
at sun.security.ssl.AppOutputStream.write(AppOutputStream.java:123)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at org.apache.thrift.transport.TIOStreamTransport.flush(TIOStreamTransport.java:159)
Analytics is already enabled in the slave region. Also, we are able to telnet on port 7712 to the analytics service in the master region.
Why is the "java.net.SocketTimeoutException: Read timed out" occurring?
There are a lot of points that you should check.
Domain resolution on the slave region.
Check the connection from the slave to the master , firewall rules , etc.
Check the certificate on both sides and that it match with the domain name.
Use openssl s_client -connect wso2apim-analytics-service.domain.com:7712
Good luck.
Once the debug logs are enabled for below class, when graphs are selected for analytics, it will log the Siddhi queries it sends to the analytics server.
This would help us to capture exact queries publisher portal sends to the analytics server and try to identify any culprit points available.
Shutdown the server.
Add the following property to /repository/conf/log4j.properties
log4j.logger.org.wso2.carbon.apimgt.impl.utils.APIUtil=DEBUG
Restart the server
Please refer to [1] for more details on logging.
[1] https://docs.wso2.com/display/AM260/Setting+Up+Logging
Having a BPEL process creating a human task, creating a RemoteTask throws the following exception (note that the BPEL process runs ok until the human task and I can create the human task invoking its WS endpoint)) :
Error sending message to Axis2 for ODE mex
{PartnerRoleMex#hqejbhcnphrbsqc3x2nneo [PID {http://b2bg2.imtech.realdolmen.com/bps/sample}HumanTaskTest-17] calling org.apache.ode.bpel.epr.WSAEndpoint#4e72a575.ErrorHandling(...) Status REQUEST}
org.apache.axis2.AxisFault: Transport error: 411 Error: Length Required
at org.apache.axis2.transport.http.HTTPSender.handleResponse(HTTPSender.java:331)
at org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:196)
at org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:77)
at org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:451)
at org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:278)
at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:442)
at org.apache.axis2.description.OutOnlyAxisOperationClient.executeImpl(OutOnlyAxisOperation.java:297)
at org.apache.axis2.client.OperationClient.execute(OperationClient.java:149)
at org.wso2.carbon.bpel.core.ode.integration.utils.AxisServiceUtils.invokeService(AxisServiceUtils.java:316)
at org.wso2.carbon.bpel.core.ode.integration.PartnerService.invoke(PartnerService.java:324)
at org.wso2.carbon.bpel.core.ode.integration.BPELMessageExchangeContextImpl.invokePartner(BPELMessageExchangeContextImpl.java:43)
at org.apache.ode.bpel.engine.BpelRuntimeContextImpl.invoke(BpelRuntimeContextImpl.java:897)
at org.apache.ode.bpel.runtime.INVOKE.run(INVOKE.java:130)
at sun.reflect.GeneratedMethodAccessor65.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.ode.jacob.vpu.JacobVPU$JacobThreadImpl.run(JacobVPU.java:451)
at org.apache.ode.jacob.vpu.JacobVPU.execute(JacobVPU.java:139)
at org.apache.ode.bpel.engine.BpelRuntimeContextImpl.execute(BpelRuntimeContextImpl.java:1002)
at org.apache.ode.bpel.engine.PartnerLinkMyRoleImpl.invokeNewInstance(PartnerLinkMyRoleImpl.java:208)
at org.apache.ode.bpel.engine.BpelProcess$1.invoke(BpelProcess.java:283)
at org.apache.ode.bpel.engine.BpelProcess.invokeProcess(BpelProcess.java:224)
at org.apache.ode.bpel.engine.BpelProcess.invokeProcess(BpelProcess.java:279)
at org.apache.ode.bpel.engine.BpelProcess.handleJobDetails(BpelProcess.java:434)
at org.apache.ode.bpel.engine.BpelEngineImpl.onScheduledJob
(BpelEngineImpl.java:558)
at org.apache.ode.bpel.engine.BpelServerImpl.onScheduledJob(BpelServerImpl.java:467)
at org.apache.ode.scheduler.simple.SimpleScheduler$RunJob$1.call(SimpleScheduler.java:633)
at org.apache.ode.scheduler.simple.SimpleScheduler$RunJob$1.call(SimpleScheduler.java:627)
at org.apache.ode.scheduler.simple.SimpleScheduler.execTransaction(SimpleScheduler.java:298)
at org.apache.ode.scheduler.simple.SimpleScheduler.execTransaction(SimpleScheduler.java:253)
at org.apache.ode.scheduler.simple.SimpleScheduler$RunJob.call(SimpleScheduler.java:627)
at org.apache.ode.scheduler.simple.SimpleScheduler$RunJob.call(SimpleScheduler.java:611)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
For me it looks like the Content-Length header neither the "chunked" is not present when the web services are called internally between the BPEL process and the HT implemention
Apparently the WSDL of the HT (human task) must have the valid service endpoint address in the service declaration. The default WSDL created by Eclipse (WSO2 DEV) has the endpoint set to the www.example.org.
I assumed the internal transport is used (as it is between processes), but apparently it's not true :(
I am currently trying to do the example presented in this Link:http://wso2.org/library/articles/2013/03/configuring-wso2-esb-wso2-message-broker. I am trying to post message to topic of message broker but everytime i access my proxy server and try to send message from esb proxy, i get this error. I dont know what went wrong. Till morning this was working. My error is:
[2013-04-30 16:40:27,516] ERROR - ClientUtils The system cannot infer the transport information from the jms:/myTopic?&t
ransport.jms.DestinationType=topic URL.
[2013-04-30 16:40:27,526] ERROR - Axis2Sender Unexpected error during sending message out
org.apache.axis2.AxisFault: The system cannot infer the transport information from the jms:/myTopic?&transport.jms.Desti
nationType=topic URL.
at org.apache.axis2.description.ClientUtils.inferOutTransport(ClientUtils.java:81)
at org.apache.axis2.client.OperationClient.prepareMessageContext(OperationClient.java:288)
at org.apache.axis2.description.OutOnlyAxisOperationClient.executeImpl(OutOnlyAxisOperation.java:249)
at org.apache.axis2.client.OperationClient.execute(OperationClient.java:149)
at org.apache.synapse.core.axis2.Axis2FlexibleMEPClient.send(Axis2FlexibleMEPClient.java:456)
at org.apache.synapse.core.axis2.Axis2Sender.sendOn(Axis2Sender.java:57)
at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:316)
at org.apache.synapse.endpoints.AbstractEndpoint.send(AbstractEndpoint.java:329)
at org.apache.synapse.endpoints.AddressEndpoint.send(AddressEndpoint.java:59)
at org.apache.synapse.core.axis2.ProxyServiceMessageReceiver.receive(ProxyServiceMessageReceiver.java:175)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172)
at org.apache.synapse.transport.nhttp.ServerWorker.processEntityEnclosingMethod(ServerWorker.java:476)
at org.apache.synapse.transport.nhttp.ServerWorker.run(ServerWorker.java:296)
at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
[2013-04-30 16:40:27,526] WARN - EndpointContext Endpoint : endpoint_1afcbfaeb203878a99e989ab5fa10f9e1385b22f66654582 w
ill be marked SUSPENDED as it failed
[2013-04-30 16:40:27,526] WARN - EndpointContext Suspending endpoint : endpoint_1afcbfaeb203878a99e989ab5fa10f9e1385b22
f66654582 - current suspend duration is : 30000ms - Next retry after : Tue Apr 30 16:40:57 IST 2013
Thanks in advance
Strange. You say it was working until today morning. But according to the exception, JMS transport sender is not enabled in your ESB's axis2.xml. Please check whether it is enabled.
I created a web app which use mysql. I used spring for the persistence.
Every thing worked on my local tomcat server.
I upload it into cloudfoundary, I follow the instuction and I create a mysql service and I use it
as a service for my web-app.
I try to run the app and I got the following exceptions:
HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80)
org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:573)
org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:812)
org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:868)
org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:876)
com.tutorialspoint.StudentJDBCTemplate.create(StudentJDBCTemplate.java:19)
com.tutorialspoint.Hello.doGet(Hello.java:58)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
java.lang.reflect.Constructor.newInstance(Constructor.java:513)
com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116)
com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:344)
com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2332)
com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2369)
com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2153)
com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:792)
com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
java.lang.reflect.Constructor.newInstance(Constructor.java:513)
com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:381)
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)
java.sql.DriverManager.getConnection(DriverManager.java:582)
java.sql.DriverManager.getConnection(DriverManager.java:154)
org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:173)
org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:164)
org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:149)
org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:119)
org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)
org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)
org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:573)
org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:812)
org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:868)
org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:876)
com.tutorialspoint.StudentJDBCTemplate.create(StudentJDBCTemplate.java:19)
com.tutorialspoint.Hello.doGet(Hello.java:58)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause
java.net.ConnectException: Connection refused
java.net.PlainSocketImpl.socketConnect(Native Method)
java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)
java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
java.net.Socket.connect(Socket.java:529)
java.net.Socket.connect(Socket.java:478)
java.net.Socket.<init>(Socket.java:375)
java.net.Socket.<init>(Socket.java:218)
com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:257)
com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:294)
com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2332)
com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2369)
com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2153)
com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:792)
com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
java.lang.reflect.Constructor.newInstance(Constructor.java:513)
com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:381)
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)
java.sql.DriverManager.getConnection(DriverManager.java:582)
java.sql.DriverManager.getConnection(DriverManager.java:154)
org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:173)
org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:164)
org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:149)
org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:119)
org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)
org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)
org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:573)
org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:812)
org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:868)
org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:876)
com.tutorialspoint.StudentJDBCTemplate.create(StudentJDBCTemplate.java:19)
com.tutorialspoint.Hello.doGet(Hello.java:58)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.35 logs.
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Apache Tomcat/6.0.35
If the problem is still there: there are 2 ways to configure a connection to CF services.
1) Taking the advantage of "auto-reconfigure". For any Java app, if it is using Spring framework, the doc here specifically described the details: http://docs.cloudfoundry.com/frameworks/java/spring/spring.html
2) For Java apps, other than Spring apps, the details of connection to the CF provisioned services like hostname or password needs to be taken care explicitly. These can be retrieved by an environment variable named "VCAP_SERVICES". Simply this code snippet can achieve that:
System.getenv("VCAP_SERVICES")
After that set the properties to the connection configuration.