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POParsing String[] Request Parameter through REST with Apache CXF
 

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  1. POParsing String[] Request Parameter through REST with Apache CXF
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    <p>I'm currently trying to develop a simple proof of concept for a REST application using CXF 2.6.4. I'm taking the non-spring approach. I'm using JBoss AS 7.1.1 Final as my web server.</p> <p>The following is my web service class:</p> <pre><code>package restful.webservice; import javax.ws.rs.Consumes; import javax.ws.rs.GET; import javax.ws.rs.POST; import javax.ws.rs.Path; import javax.ws.rs.Produces; import javax.ws.rs.core.MediaType; import restful.entity.ControllerVersion; @Produces(MediaType.APPLICATION_JSON) @Consumes(MediaType.APPLICATION_JSON) public class WebServiceRest implements WebServiceInterface { @Override @POST @GET @Path("/getVersion") public ControllerVersion getVersion(String deviceID, String[] macAddresses) { return new ControllerVersion(); } } </code></pre> <p><strong>ControllerVersion class:</strong></p> <pre><code>package restful.entity; @XmlRootElement(name = "ControllerVersion") public class ControllerVersion { private String version="R1.1.0.0"; public String getVersion() { return version; } } </code></pre> <p>Now, when I try to make a REST call to my web service, I get the following exception on the server side:</p> <pre><code>18:51:52,913 WARNING [org.apache.cxf.jaxrs.utils.JAXRSUtils] (http--0.0.0.0-8080-1) No message body reader has been found for request class String[], ContentType : application/json. 18:51:52,927 WARNING [org.apache.cxf.jaxrs.impl.WebApplicationExceptionMapper] (http--0.0.0.0-8080-1) javax.ws.rs.WebApplicationException at org.apache.cxf.jaxrs.utils.JAXRSUtils.readFromMessageBody(JAXRSUtils.java:1054) at org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameter(JAXRSUtils.java:614) at org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameters(JAXRSUtils.java:578) at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.processRequest(JAXRSInInterceptor.java:238) at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.handleMessage(JAXRSInInterceptor.java:89) at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:262) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121) at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:236) at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:209) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:154) at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:130) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:225) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:145) at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:201) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) at java.lang.Thread.run(Thread.java:662) </code></pre> <p>The libraries that I have under WEB-INF/lib are:</p> <pre><code>cxf-api-2.6.4.jar cxf-bundle-2.6.4.jar cxf-rt-frontend-jaxrs-2.6.4.jar cxf-rt-frontend-jaxrs.jar cxf-rt-transports-http-2.6.4.jar geronimo-servlet.jar jaxb-api-2.2.5.jar jaxb-impl-2.2.5.1.jar jaxb-xjc-2.2.5.1.jar jettison-1.3.4.jar log4j-1.2.16.jar neethi-3.0.2.jar xmlschema-core-2.0.3.jar </code></pre> <p>The interesting thing is that I tried to do another project, but this time in the signature of my web service method, I included a custom class. I had no problem reading the contents of the custom class' instance, nor a problem while returning it to my client.</p> <p>Am I missing something?</p> <p><strong>UPDATE:</strong> I tried to add the following to my web.xml:</p> <pre><code>&lt;init-param&gt; &lt;param-name&gt;jaxrs.providers&lt;/param-name&gt; &lt;param-value&gt; org.codehaus.jackson.jaxrs.JacksonJaxbJsonProvider (writeXsiType=false) &lt;/param-value&gt; &lt;/init-param&gt; </code></pre> <p>And added the following dependencies as well:</p> <pre><code>jackson-jaxrs-1.9.2.jar jackson-mapper-asl-1.9.2.jar jackson-xc-1.9.2.jar </code></pre> <p>Now I'm getting the following exception:</p> <pre><code>19:22:29,762 WARNING [org.apache.cxf.jaxrs.impl.WebApplicationExceptionMapper] (http--0.0.0.0-8080-1) javax.ws.rs.WebApplicationException: java.io.IOException: Stream closed at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.processRequest(JAXRSInInterceptor.java:243) at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.handleMessage(JAXRSInInterceptor.java:89) at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:262) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121) at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:236) at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:209) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:154) at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:130) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:225) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:145) at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:201) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) at java.lang.Thread.run(Thread.java:662) Caused by: java.io.IOException: Stream closed at org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:377) at org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.java:193) at java.io.FilterInputStream.read(FilterInputStream.java:116) at org.codehaus.jackson.impl.ByteSourceBootstrapper.ensureLoaded(ByteSourceBootstrapper.java:507) at org.codehaus.jackson.impl.ByteSourceBootstrapper.detectEncoding(ByteSourceBootstrapper.java:129) at org.codehaus.jackson.impl.ByteSourceBootstrapper.constructParser(ByteSourceBootstrapper.java:224) at org.codehaus.jackson.JsonFactory._createJsonParser(JsonFactory.java:785) at org.codehaus.jackson.JsonFactory.createJsonParser(JsonFactory.java:561) at org.codehaus.jackson.jaxrs.JacksonJsonProvider.readFrom(JacksonJsonProvider.java:414) at org.apache.cxf.jaxrs.utils.JAXRSUtils.readFromMessageBody(JAXRSUtils.java:1038) at org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameter(JAXRSUtils.java:614) at org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameters(JAXRSUtils.java:578) </code></pre> <p><strong>Update 2:</strong> I tried to implement a method with a different signature, and this time, I have omitted the String array from the method:</p> <pre><code>public ControllerVersion getVersion(String deviceID) </code></pre> <p>Everything is working perfectly without the String array. What do you think I should do?</p>
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