How to use asynchronous callbacks of jersey 2 in tomcat server.
I found some examples in Jersey manual : https://jersey.java.net/documentation/latest/user-guide.html#d0e8496.
But the issue occurs when I'm tring to test following code with this: https://jersey.java.net/documentation/latest/user-guide.html#d0e8615 code as mentioned on Jersey 2 Manual.
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As, manual version has been changed, I'm posting the codes over here:
This is my Service:
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.container.AsyncResponse;
import javax.ws.rs.container.CompletionCallback;
import javax.ws.rs.container.Suspended;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
#Path("/resource")
public class AsyncResource {
private static int numberOfSuccessResponses = 0;
private static int numberOfFailures = 0;
private static Throwable lastException = null;
#GET
public void asyncGetWithTimeout(#Suspended final AsyncResponse asyncResponse) {
System.out.println("AsyncResource.asyncGetWithTimeout()");
asyncResponse.register(new CompletionCallback() {
#Override
public void onComplete(Throwable throwable) {
if (throwable == null) {
// no throwable - the processing ended successfully
// (response already written to the client)
numberOfSuccessResponses++;
} else {
numberOfFailures++;
lastException = throwable;
}
}
});
new Thread(new Runnable() {
#Override
public void run() {
String result = veryExpensiveOperation();
asyncResponse.resume(result);
}
private String veryExpensiveOperation() {
// ... very expensive operation
return "Hi";
}
}).start();
}
}
This is client:
ClientConfig clientConfig = new ClientConfig();
Client client = ClientBuilder.newClient(clientConfig);
WebTarget webTarget = client.target("http://localhost:8080/Jersey2.5Service/rest");
WebTarget target = webTarget.path("resource");
final AsyncInvoker asyncInvoker = target
.request().async();
final Future<Response> responseFuture = asyncInvoker.get();
System.out.println("Request is being processed asynchronously.");
final Response response = responseFuture.get();
// get() waits for the response to be ready
System.out.println("Response received." +response.readEntity(String.class));
web.xml
<servlet>
<servlet-name>HelloServlet</servlet-name>
<servlet-class>
org.glassfish.jersey.servlet.ServletContainer
</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>main.java</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>HelloServlet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
These are the jars I'm using:
asm-all-repackaged-2.2.0-b21.jar
cglib-2.2.0-b21.jar
guava-14.0.1.jar
hk2-api-2.2.0-b21.jar
hk2-locator-2.2.0-b21.jar
hk2-utils-2.2.0-b21.jar
javax.annotation-api-1.2.jar
javax.inject-2.2.0-b21.jar
javax.servlet-api-3.0.1.jar
javax.ws.rs-api-2.0.jar
jaxb-api-2.2.7.jar
jersey-client.jar
jersey-common.jar
jersey-container-servlet-core.jar
jersey-container-servlet.jar
jersey-server.jar
org.osgi.core-4.2.0.jar
osgi-resource-locator-1.0.1.jar
persistence-api-1.0.jar
servlet-api-3.0.jar
validation-api-1.1.0.Final.jar
These errors are coming:
Jan 31, 2014 4:06:53 PM org.glassfish.jersey.servlet.internal.ResponseWriter suspend
WARNING: Attempt to put servlet request into asynchronous mode has failed. Please check your servlet configuration - all Servlet instances and Servlet filters involved in the request processing must explicitly declare support for asynchronous request processing.
java.lang.IllegalStateException: Not supported.
at org.apache.catalina.connector.Request.startAsync(Request.java:1676)
at org.apache.catalina.connector.RequestFacade.startAsync(RequestFacade.java:1031)
at org.glassfish.jersey.servlet.async.AsyncContextDelegateProviderImpl$ExtensionImpl.suspend(AsyncContextDelegateProviderImpl.java:87)
at org.glassfish.jersey.servlet.internal.ResponseWriter.suspend(ResponseWriter.java:120)
at org.glassfish.jersey.server.ServerRuntime$AsyncResponder.suspend(ServerRuntime.java:758)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:330)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:106)
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:259)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:318)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:236)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1010)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:373)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:382)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:345)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:220)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
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:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Jan 31, 2014 4:06:53 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [HelloServlet] in context with path [/Jersey2.5Service] threw exception [javax.ws.rs.ProcessingException: Attempt to suspend a connection of an asynchronous request failed in the underlying container.] with root cause
javax.ws.rs.ProcessingException: Attempt to suspend a connection of an asynchronous request failed in the underlying container.
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:331)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:106)
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:259)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:318)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:236)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1010)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:373)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:382)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:345)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:220)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
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:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
For me the solution was to add support for Async in a Servlet Filter. The error message gave me a hint:
Attempt to put servlet request into asynchronous mode has failed. Please check your servlet configuration - all Servlet instances and Servlet filters involved in the request processing must explicitly declare support for asynchronous request processing
I am using Spring for Dependency Injection and using the default Jersey servlet. For Spring I use a Delegating Filter Proxy. I needed to declare for the Filter asycn support true.
So for the servlet:
<servlet>
<servlet-name>myserlet</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<load-on-startup>1</load-on-startup>
<async-supported>true</async-supported>
</servlet>
AND add async support true for the the Spring filter as well.
<filter>
<description>Spring filter</description>
<display-name>spring-filter</display-name>
<filter-name>springFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
<async-supported>true</async-supported>
</filter>
I hope this might help for you and others.
I know this question is very old, but for people who are facing this issue Please update Tomcat Server to the Latest Version 8.** . Tomcat starting from version 8 has support for Async Processing.
For Async callback you can use Guava lib. For example:
#GET
#Produces(MediaType.APPLICATION_JSON)
#ManagedAsync
public void getBooks(#Suspended final AsyncResponse response){
ListenableFuture<Collection<Book>> bookFuture = dao.getBooksAsync();
Futures.addCallback(bookFuture, new FutureCallback<Collection<Book>>() {
public void onSuccess(Collection<Book> books){
response.resume(books);
}
public void onFailure(Throwable thrown){
response.resume(thrown);
}
});
}
And in my book DAO I have:
BookDao(){
books = new HashMap<String,Book>();
Book b1 = new Book();
service = MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(10));
}
Collection<Book> getBooks(){
return(books.values());
}
ListenableFuture<Collection<Book>> getBooksAsync(){
ListenableFuture<Collection<Book>> future =
service.submit(new Callable<Collection<Book>>() {
public Collection<Book> call() throws Exception{
return getBooks();
}
});
return(future);
}
This might be too late, but upgrading to tomcat 9 will resolve this issue, without you modifying anything in the server
Related
I am using Jersey version 1.12 and i am facing the error that is
A message body writer for Java class java.lang.Boolean, and Java type boolean, and MIME media type application/octet-stream was not found
at com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:285)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1451)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1363)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1353)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:414)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:708)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
my code is
#POST
#Path("/save/{Name}/{data}")
#Consumes("application/x-www-form-urlencoded")
public String saveDataMap(#QueryParam("number") String number,
#PathParam("data") String data,
#PathParam("Name") String appName
MultivaluedMap<String, String> formParam) throws Exception{
boolean response =false'
try{
// some business logic
response =true
}
return response;
}
After Googling this error i found that this is due to you are not specifying the content type of the data you are sending - so Jersey is not able to locate the right MessageBodyWritter to serialize
after this i added produces anotation to the method with the MediaType.TEXT_PLAIN but it doesn't work ,but when i changed return type of method to String it started working.
I simply wants to know whats problem with boolean ,why it is not working with boolean ? and how to solve this problem without changing boolean to String ?
any help will be greatly appreciated.
I usually code these methods like this:
#POST
#Path("/save/{Name}/{data}")
#Consumes("application/x-www-form-urlencoded")
#Produces(MediaType.TEXT_PLAIN)
public Response saveDataMap(#QueryParam("number") String number,
#PathParam("data") String data,
#PathParam("Name") String appName
MultivaluedMap<String, String> formParam) throws Exception{
boolean response =false
try{
// some business logic
response =true
}
return Response.ok().entity(String.valueOf(response)).build();
}
The only changes is that it returns a jersey HTTP response building it from a string from a boolean.
I hope it helps.
Regards,
Cris.
Am trying to configure my custom filter AccountVerificationFilter with spring and am getting NPE, these are my configurations
I configured cpFilterCHain in web.xml as below
<filter>
<filter-name>cpFilterChain
</filter-name>
<filter-class>org.springframework.security.web.FilterChainProxy
</filter-class>
</filter>
<filter>
<filter-name>cpFilterChain
</filter-name>
<filter-class>org.springframework.security.web.FilterChainProxy
</filter-class>
</filter>
Here is my applicationCOntext.xml
<bean id="accountVerificationFilter" class="com.dc.apps.cpportal.security.filter.AccountVerificationFilter" />
<bean id="cpFilterChain" class="org.springframework.security.web.FilterChainProxy">
<sec:filter-chain-map path-type="ant">
<sec:filter-chain pattern="/**" filters="
accountVerificationFilter" />
</sec:filter-chain-map>
</bean>
Here is my AccountVerificationFilter component
#Component
public class AccountVerificationFilter implements Filter {
private static final String UPDATE_PASSWORD_URL = "/updatePassword.do";
private static final String DO_ACTION_URL = ".do";
private static final String IS_URL_VERIFIED = "isUrlVerified";
private Long maxSessionTimeToLive = null;
#Autowired
protected DCAuthenticationSuccessHandler successHandler;
#Autowired
protected ApplicationUrlConfig applicationUrlConfig;
#Autowired
protected AuthenticationFilterConfiguration authenticationConfiguration;
public void destroy() {
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException,
ServletException {
doFilterHttp((HttpServletRequest) request, (HttpServletResponse) response, filterChain);
}
}
Am using spring security 3.1.4. Tomcat starts fine but when i goto my application am seeing this exception
SEVERE: Servlet.service() for servlet [cpportal] in context with path [/cpportal] threw exception
java.lang.NullPointerException
at org.springframework.security.web.FilterChainProxy.getFilters(FilterChainProxy.java:202)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:176)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.dc.core.common.SetXFrameOptionsFilter.doFilter(SetXFrameOptionsFilter.java:21)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:101)
at com.dc.core.common.FlashRecyclingFilter.doFilterInternal(FlashRecyclingFilter.java:21)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.dc.core.common.StripJSessionIdFilter.doFilter(StripJSessionIdFilter.java:101)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
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:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
Can someone help me with this issue?
I think the problem is that the cpFilterChain in your web.xml is a duplicate object created by your application server and not the original instantiated by the spring container.
Try using the delegatingfilterproxy which delegates the filter task to a Spring bean
<filter>
<filter-name>cpFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy
</filter-class>
</filter>
<filter-mapping>
<filter-name>cpFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
I have the following class :
package test
import org.apache.log4j.Logger;
import javax.ws.rs.*;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
#Path("/test")
public class test {
private static Logger logger = Logger.getLogger(test.class);
#GET
public Response getMsg() {
logger.info("Inside getMsg()");
String output = "hello world";
return Response.status(200).entity(output).build();
}
#GET
#Path("/get")
#Produces(MediaType.APPLICATION_JSON)
public Track getTrackInJSON() {
Track track = new Track();
track.setTitle("Enter Sandman");
track.setSinger("Metallica");
return track;
}
#POST
#Path("/post")
#Consumes(MediaType.APPLICATION_JSON)
public Response createTrackInJSON(Track track) {
String result = "Track saved : " + track;
return Response.status(201).entity(result).build();
}
}
Track is just an object of another class
I have the following dependencies in my POM :
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-server</artifactId>
<version>1.8</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-client</artifactId>
<version>1.8</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-json</artifactId>
<version>1.17.1</version>
</dependency>
and this is my servlet mapping
<servlet-mapping>
<servlet-name>jersey-serlvet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
Everytime I use the
BASEURL/rest/test -> Correct response ( Hello world)
BASEURL/rest/test/get -> Type:GET
response: <html><head><title>Apache Tomcat/7.0.42 - Error report</title></head><body><h1>HTTP Status 500 - Internal Server Error</h1><HR size="1" noshade="noshade"><p><b>type</b> Status report</p><p><b>message</b> <u>Internal Server Error</u></p><p><b>description</b> <u>The server encountered an internal error that prevented it from fulfilling this request.</u></p><HR size="1" noshade="noshade"><h3>Apache Tomcat/7.0.42</h3></body></html>
also in the tomcat execution I can see the error:
Jan 27, 2014 1:41:28 PM
com.sun.jersey.spi.container.ContainerResponse logException
SEVERE: Mapped exception to response: 500 (Internal Server Error)
javax.ws.rs.WebApplicationException: com.sun.jersey.api.MessageException: A message body writer for Java class com.myProj.jsp.rest.Track, and Java type class com.gsipartners.apimgmtut
at com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:285)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1437)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
Caused by: com.sun.jersey.api.MessageException: A message body writer for Java class com.myProj.jsp.rest.Track, and Java type class com.myProj.jsp.rest.Track, and MIM
... 24 more
I have no idea why this is not working
Looks like it's having a problem writing the Track java object back in the response.
You don't appear to have Moxy in your POM. Do you have some form of JSON Marshaller in your classpath?
Have a look at this: https://jersey.java.net/documentation/latest/media.html#json.moxy
I'm trying to implement a REST WS. The following code works ok:
#Path("/MyRest")
#WebService
public class MyService {
#GET
#Produces(MediaType.APPLICATION_JSON)
#Path("/{id}")
public Response test(#PathParam("id") String id) {
String str = "{\"status\":\"ok\",\"id\":\"" + id + "\"}";
return Response.status(200).entity(str).build();
}
}
web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>WSRest</display-name>
<servlet>
<servlet-name>Jersey REST Service</servlet-name>
<servlet-class>
com.sun.jersey.spi.container.servlet.ServletContainer
</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>test</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Jersey REST Service</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>
Now i'm trying to do it with an Interface. The interface would be like follows, I guess:
#Path("/MyRest")
#WebService
public interface IService {
#GET
#Produces(MediaType.APPLICATION_JSON)
#Path("/{id}")
public Response test(#PathParam("id") String id);
}
And now the WS implementation would be like this, right?:
public class MyService implements IService{
#Override
public Response test(#PathParam("id") String id) {
String str = "{\"status\":\"ok\",\"id\":\"" + id + "\"}";
return Response.status(200).entity(str).build();
}
}
I'm getting "HTTP Status 500 - Servlet.init() for servlet Jersey REST Service threw exception" when I try to "run" it again :/
Any ideas? Thanks in advance.
Full exception:
type Exception report
message Servlet.init() for servlet Jersey REST Service threw exception
description The server encountered an internal error that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Servlet.init() for servlet Jersey REST Service threw exception
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2430)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2419)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
java.lang.Thread.run(Thread.java:722)
root cause
com.sun.jersey.spi.inject.Errors$ErrorMessagesException
com.sun.jersey.spi.inject.Errors.processErrorMessages(Errors.java:170)
com.sun.jersey.spi.inject.Errors.postProcess(Errors.java:136)
com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:199)
com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:795)
com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:790)
com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:491)
com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:321)
com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:605)
com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:207)
com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:376)
com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:559)
javax.servlet.GenericServlet.init(GenericServlet.java:160)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2430)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2419)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
java.lang.Thread.run(Thread.java:722)
An example of a web method using an interface:
Web service implementation:
#Path("/WS")
#WebService
public class WebService implements IWebService {
#Override
#POST
#Consumes("application/json")
#Produces("application/json")
#Path("/Login")
public Response Login(JSONObject data) {
//stuff here
}
}
Interface:
public interface IWebService {
#POST
#Consumes("application/json")
#Produces("application/json")
#Path("/Login")
public Response Login(JSONObject data);
}
I work on a project in which I need to create a real time web application. I've developed a small program to test WebSockets with Apache Tomcat, but it doesn't work and instead throws an AbstractMethodError exception. The servlet compiles and the web application deploys fine.
Here's the servlet's code.
public class TestWebSocket extends WebSocketServlet {
private static final long serialVersionUID = 1L;
#Override
protected boolean verifyOrigin(String origin) {
System.out.println("Origin: {}" + origin);
return true;
}
#Override
protected StreamInbound createWebSocketInbound(String subProtocol, HttpServletRequest request) {
return new WebSocketConnection();
}
private static class WebSocketConnection extends MessageInbound {
#Override
protected void onOpen(WsOutbound outbound) {
System.out.println("Conexión abierta");
}
#Override
protected void onClose(int status) {
System.out.println("Conexión cerrada");
}
#Override
protected void onBinaryMessage(ByteBuffer byteBuffer) throws IOException {
System.out.println("No se soportan mensajes binarios");
throw new UnsupportedOperationException("No se soportan mensajes binarios");
}
#Override
protected void onTextMessage(CharBuffer charBuffer) throws IOException {
final String user = charBuffer.toString();
System.out.println("Mensaje recibido: {}" + user);
getWsOutbound().writeTextMessage(CharBuffer.wrap("Hola " + user + " desde WebSocket"));
}
}
}
Here goes the deployment descriptor - web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>TestWebSocket</display-name>
<servlet>
<servlet-name>TestWebSocket</servlet-name>
<servlet-class>com.test.TestWebSocket</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>TestWebSocket</servlet-name>
<url-pattern>/testWebSocket</url-pattern>
</servlet-mapping>
</web-app>
And the client code - testSocket.js:
/*
* For Testing websockets
*/
$(function(){
console.log("URL :" + 'ws://' + location.host + '/TestTomcatWebSocket/testWebSocket');
var ws = new WebSocket('ws://' + location.host + '/TestTomcatWebSocket/testWebSocket');
ws.onopen = function() {
console.log("Websocket Ready!!");
sendMessage();
};
ws.onmessage= function(data) {
console.log("message received : " + data);
};
function sendMessage() { ws.send("Test"); };
});
Upon execution the application finishes with the following java.lang.AbstractMethodError exception:
INFO: Server startup in 495 ms
Origin: {}http://localhost:8080
Dec 17, 2012 1:58:51 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [TestWebSocket] in context with path [/TestTomcatWebSocket] threw exception [Servlet execution threw an exception] with root cause
java.lang.AbstractMethodError: org.apache.catalina.websocket.WebSocketServlet.createWebSocketInbound(Ljava/lang/String;)Lorg/apache/catalina/websocket/StreamInbound;
at org.apache.catalina.websocket.WebSocketServlet.doGet(WebSocketServlet.java:125)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
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 org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
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:999)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
I use Apache Tomcat 7.0.33.
problem solved. basically i was using the older version of eclipse which configures tomcat according to tomcat's earlier configuration for running tomcat inside it. So when i used eclipse's latest version JUNO it configured it with tomcats latest configuration which includes websocket configuration in catilina.policy file.
// Applications using WebSocket need to be able to access this package permission java.lang.RuntimePermission "accessClassInPackage.org.apache.catalina.websocket";