RE: [rules-dev] Problems when using drools-server

Monday, 2 February 2009

The client file is as:

import java.io.*;

import java.net.*;

public class DroolsClient {

            public static void main(String[] args) {

                        try {

                                    InputStream inXML =
DroolsClient.class.getResourceAsStream("sample_request.xml");

                                    URL url = new
URL("http://localhost:8080/drools-server/knowledgebase/testservice");

                                    URLConnection conn =
url.openConnection();

                                    conn.setDoOutput(true);

                                    // conn.setRequestProperty(key,
value);

                                    BufferedReader in = new
BufferedReader(new InputStreamReader(inXML));

                                    DataOutputStream outXML = new
DataOutputStream(conn.getOutputStream());

                                    String requestline;

                                    while ((requestline = in.readLine())
!= null) {

System.out.println(requestline);

outXML.writeBytes(requestline);

                                    }

                                    in.close();

                                    outXML.flush();

                                    outXML.close();

                                    BufferedReader response = new
BufferedReader(new InputStreamReader(conn.getInputStream()));

                                    String responseLine;

                                    while ((responseLine =
response.readLine()) != null) {

System.out.println(responseLine);

                                    }

                                    response.close();

                        } catch (MalformedURLException ex) {

                        } catch (IOException ex) {

                        }

            }

}

How to make it consistent to the drools-server?

Thanks,

Jing

________________________________

From: rules-dev-bounces(a)lists.jboss.org
[mailto:rules-dev-bounces@lists.jboss.org] On Behalf Of David Sinclair
Sent: Monday, February 02, 2009 4:26 PM
To: Rules Dev List
Subject: Re: [rules-dev] Problems when using drools-server

Looks like the version of drools on your server is different than your
client. That would explain the class version issue

On Mon, Feb 2, 2009 at 5:19 PM, Zhang Jing-A52198 <j.zhang(a)motorola.com&gt;
wrote:

Hi All,

When I access the drools-server by URLConnection, I've always got such
errors:

WARNING: RuleAgent(default) EXCEPTION (Mon Feb 02 16:09:46 CST 2009):
org.drools.base.BaseEvaluator; local class incompatible: stream
classdesc serialVersionUID = -7767879457606879276, local class
serialVersionUID = -7149415669283058142. Stack trace should follow.

WARNING: java.io.InvalidClassException: org.drools.base.BaseEvaluator;
local class incompatible: stream classdesc serialVersionUID =
-7767879457606879276, local class serialVersionUID =
-7149415669283058142

                at
java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:562)

                at
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1583)

                at
java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)

                at
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1583)

                at
java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)

                at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732
)

                at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)

                at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)

                at
org.drools.rule.LiteralRestriction.readExternal(LiteralRestriction.java:
66)

                at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)

                at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751
)

                at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)

                at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)

                at
org.drools.rule.LiteralConstraint.readExternal(LiteralConstraint.java:67
)

                at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)

                at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751
)

                at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)

                at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)

                at java.util.ArrayList.readObject(ArrayList.java:593)

                at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown
Source)

                at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25)

                at java.lang.reflect.Method.invoke(Method.java:597)

                at
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)

                at
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849)

                at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753
)

                at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)

                at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)

                at
org.drools.rule.Pattern.readExternal(Pattern.java:115)

                at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)

                at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751
)

                at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)

                at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)

                at java.util.ArrayList.readObject(ArrayList.java:593)

                at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown
Source)

                at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25)

                at java.lang.reflect.Method.invoke(Method.java:597)

                at
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)

                at
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849)

                at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753
)

                at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)

                at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)

                at
org.drools.rule.GroupElement.readExternal(GroupElement.java:57)

                at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)

                at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751
)

                at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)

                at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)

                at org.drools.rule.Rule.readExternal(Rule.java:170)

                at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)

                at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751
)

                at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)

                at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)

                at java.util.HashMap.readObject(HashMap.java:1029)

                at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown
Source)

                at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25)

                at java.lang.reflect.Method.invoke(Method.java:597)

                at
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)

                at
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849)

                at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753
)

                at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)

                at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)

                at
org.drools.rule.MVELDialectRuntimeData.readExternal(MVELDialectRuntimeDa
ta.java:42)

                at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)

                at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751
)

                at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)

                at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)

                at java.util.HashMap.readObject(HashMap.java:1030)

                at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown
Source)

                at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25)

                at java.lang.reflect.Method.invoke(Method.java:597)

                at
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)

                at
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849)

                at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753
)

                at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)

                at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)

                at
org.drools.rule.DialectRuntimeRegistry.readExternal(DialectRuntimeRegist
ry.java:41)

                at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)

                at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751
)

                at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)

                at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)

                at
org.drools.rule.Package.readExternal(Package.java:197)

                at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)

                at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751
)

                at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)

                at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)

                at
org.drools.util.DroolsStreamUtils.streamIn(DroolsStreamUtils.java:189)

                at
org.drools.util.DroolsStreamUtils.streamIn(DroolsStreamUtils.java:158)

                at
org.drools.agent.HttpClientImpl.fetchPackage(HttpClientImpl.java:47)

                at
org.drools.agent.URLScanner.readPackage(URLScanner.java:148)

                at
org.drools.agent.URLScanner.getChangeSet(URLScanner.java:120)

                at
org.drools.agent.URLScanner.loadPackageChanges(URLScanner.java:96)

                at
org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:410)

                at
org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:362)

                at
org.drools.agent.RuleAgent.configure(RuleAgent.java:347)

                at org.drools.agent.RuleAgent.init(RuleAgent.java:247)

                at
org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:187)

                at
org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:147)

                at
org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:256)

                at
org.drools.server.KnowledgeStatelessServlet.getRuleBase(KnowledgeStatele
ssServlet.java:109)

                at
org.drools.server.KnowledgeStatelessServlet.doPost(KnowledgeStatelessSer
vlet.java:71)

                at
javax.servlet.http.HttpServlet.service(HttpServlet.java:738)

                at
javax.servlet.http.HttpServlet.service(HttpServlet.java:831)

                at
org.apache.catalina.core.ApplicationFilterChain.servletService(Applicati
onFilterChain.java:411)

                at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:317)

                at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:198)

                at
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFi
lter.java:390)

                at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:230)

                at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:198)

                at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.java:288)

                at 

WARNING:
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardCon
textValve.java:271)

                at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.java:202)

                at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java
:632)

                at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java
:577)

                at
com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)

                at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:206)

                at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java
:632)

                at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java
:577)

                at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:5
71)

                at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)

                at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:150)

                at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java
:632)

                at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java
:577)

                at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:5
71)

                at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)

                at
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:272)

                at
com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdap
ter(DefaultProcessorTask.java:637)

                at
com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(
DefaultProcessorTask.java:568)

                at
com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(De
faultProcessorTask.java:813)

                at
com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcesso
rTask(DefaultReadTask.java:341)

                at
com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultR
eadTask.java:263)

                at
com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultR
eadTask.java:214)

                at
com.sun.enterprise.web.portunif.PortUnificationPipeline$PUTask.doTask(Po
rtUnificationPipeline.java:380)

                at
com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)

                at
com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWork
erThread.java:106)

WARNING: java.lang.NullPointerException

                at
org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:363)

                at
org.drools.agent.RuleAgent.configure(RuleAgent.java:347)

                at org.drools.agent.RuleAgent.init(RuleAgent.java:247)

                at
org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:187)

                at
org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:147)

                at
org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:256)

                at
org.drools.server.KnowledgeStatelessServlet.getRuleBase(KnowledgeStatele
ssServlet.java:109)

                at
org.drools.server.KnowledgeStatelessServlet.doPost(KnowledgeStatelessSer
vlet.java:71)

                at
javax.servlet.http.HttpServlet.service(HttpServlet.java:738)

                at
javax.servlet.http.HttpServlet.service(HttpServlet.java:831)

                at
org.apache.catalina.core.ApplicationFilterChain.servletService(Applicati
onFilterChain.java:411)

                at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:317)

                at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:198)

                at
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFi
lter.java:390)

                at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:230)

                at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:198)

                at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.java:288)

                at
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardCon
textValve.java:271)

                at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.java:202)

                at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java
:632)

                at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java
:577)

                at
com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)

                at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:206)

                at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java
:632)

                at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java
:577)

                at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:5
71)

                at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)

                at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:150)

                at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java
:632)

                at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java
:577)

                at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:5
71)

                at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)

                at
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:272)

                at
com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdap
ter(DefaultProcessorTask.java:637)

                at
com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(
DefaultProcessorTask.java:568)

                at
com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(De
faultProcessorTask.java:813)

                at
com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcesso
rTask(DefaultReadTask.java:341)

                at
com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultR
eadTask.java:263)

                at
com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultR
eadTask.java:214)

                at
com.sun.enterprise.web.portunif.PortUnificationPipeline$PUTask.doTask(Po
rtUnificationPipeline.java:380)

                at
com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)

                at
com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWork
erThread.java:106)

Can anyone help me to fix this problem? I've got the same errors when
trying to run KnowledgeServiceServletTest.java from the drool-server
source code.

Thanks,

Jing

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RE: [rules-dev] Problems when using drools-server