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Type: Bug
Resolution: Done
Priority: Minor
Fix Version/s: 8.1.0.CR2, 8.1.0.Final
Affects Version/s: 8.1.0.CR1
Component/s: Web (Undertow)
Labels:
None

Similar to WFL-1276 I got “UT005023: Exception handling request to /hsb/web-services/: java.lang.IllegalStateException: UT010005: Cannot call getOutputStream(), getWriter() already called” when accessing CXFNonSpringServlet servlet that shows all web services deployed with ApacheCamel 2.13.0. The exception is was not present in WF 8.0. Even with the exception the servlet renders all available service correctly.

Servlet:

import com.parsek.hsb.commons.Hsb;
import org.apache.cxf.Bus;
import org.apache.cxf.transport.servlet.CXFNonSpringServlet;

import javax.inject.Inject;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;

// reuse camel bus
@WebServlet(value = "/web-services/*", name = "HsbWebServices", asyncSupported = true, loadOnStartup = 1)
public class ExposeCxf extends CXFNonSpringServlet {

    @Hsb
    @Inject
    private Bus bus;

    @Override
    public void init(ServletConfig sc) throws ServletException {
        setBus(bus);
        super.init(sc);
    }

}

Exception

11:12:05,900 ERROR [io.undertow.request] (default task-11) UT005023: Exception handling request to /hsb/web-services/: java.lang.IllegalStateException: UT010005: Cannot call getOutputStream(), getWriter() already called
	at io.undertow.servlet.spec.HttpServletResponseImpl.getOutputStream(HttpServletResponseImpl.java:283) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
	at org.apache.cxf.transport.servlet.servicelist.ServiceListGeneratorServlet.renderStyleSheet(ServiceListGeneratorServlet.java:174) [cxf-rt-transports-http-2.7.10.jar:2.7.10]
	at org.apache.cxf.transport.servlet.servicelist.ServiceListGeneratorServlet.service(ServiceListGeneratorServlet.java:89) [cxf-rt-transports-http-2.7.10.jar:2.7.10]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
	at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:170) [cxf-rt-transports-http-2.7.10.jar:2.7.10]
	at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:153) [cxf-rt-transports-http-2.7.10.jar:2.7.10]
	at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:167) [cxf-rt-transports-http-2.7.10.jar:2.7.10]
	at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:286) [cxf-rt-transports-http-2.7.10.jar:2.7.10]
	at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doGet(AbstractHTTPServlet.java:211) [cxf-rt-transports-http-2.7.10.jar:2.7.10]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
	at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:262) [cxf-rt-transports-http-2.7.10.jar:2.7.10]
	at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
	at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
	at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:168) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:727) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0]
	at java.lang.Thread.run(Thread.java:744) [rt.jar:1.8.0]

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