Creating rest web services with rest easy is very simple , you can read more about this
in this post. Now if you want to add json support in rest you have to add following dependency in your pom.xml
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jackson-provider</artifactId>
<version>2.3.2.Final</version>
</dependency>
And this is the Rest class
@Path("/test")
@POST
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public Response getResult(Input in) {
Output out = new Output();
out.setMessage("success");
return Response.status(Status.OK).entity(out).build();
}
Where Input.java and Output.java will be beans which will be converted in to/from json by jackson.
If you forget to add dependency you might get error like this in tomcat :
EVERE: Failed executing POST /test org.jboss.resteasy.spi.BadRequestException: Could not find message body reader for type: class com.onlinehttpclient.bean.Input of content type: application/json;charset="utf-8" at org.jboss.resteasy.core.MessageBodyParameterInjector.inject(MessageBodyParameterInjector.java:153) at org.jboss.resteasy.core.MethodInjectorImpl.injectArguments(MethodInjectorImpl.java:124) at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:147) at org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:257) at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:222) at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:211) at org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:525) at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:502) at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:119) at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:208) at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:55) at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:50) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.onlinehttpclient.filter.CrawlServlet.doFilter(CrawlServlet.java:105) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:722)Post your comments !!
