I am trying to use #BeanParam annotation from JAX-RS.
It was working perfectly fine with Apache cxf 2.7.7 but after upgrading to Apache cxf 3.0.1 it does not work. In my rest service, bean param is null and i get NullPointerException.
I have tried with cxf 3.0.3 but result is same.
My RestService looks like
Class MyService {
#BeanParam
private MyBean params;
#Path("/test")
public Response testIt() {
// params is null here
}
}
class MyBean {
#QueryParam
private String message;
public void setMessage(String message) {
this.message = message;
}
public String getMessage() {
return this.message;
}
}
My dependency in gradle looks like
def cxfVersion = "3.0.1"
ext.libraries = [
cxf: [
"org.apache.cxf:apache-cxf:$cxfVersion",
"org.apache.cxf:cxf-rt-frontend-jaxrs:$cxfVersion"
]
Does anybody have any idea what has changed form cxf 2.7.7 to cxf 3.0.x, that will make this non functioning.
I found the problem. It was due to presence of another cxf version jar present on classpath (version 2.3.3) coming from other projects dependencies. Somehow that was getting the precedence over 3.x version and that didn't had support for BeanParam.
Removing that jar from classpath worked for me.
Related
In a sample Java servlet project in my IntelliJ IDE, i have created this class in Kotlin :
#WebServlet(name = "TwitterAPIServlet", description = "This is used to test the servlet api", urlPatterns = ["/twitterAPIServlet"])
class TwitterAPIServlet : HttpServlet() {
#Throws(IOException::class)
override fun doGet(req: HttpServletRequest, resp: HttpServletResponse) {
// Print answer
val out = resp.writer
out.println("Request Done : </br>")
}
}
When i am trying to call this with my .jsp page, i have this error :
2020-05-10 15:30:34.218:WARN:oejs.HttpChannel:qtp60559178-27: /twitterAPIServlet
java.lang.NoClassDefFoundError: kotlin/jvm/internal/Intrinsics
at main.java.co.rezo.api.internal.v1.TwitterAPIServlet.doGet(TwitterAPIServlet.kt)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
When i am trying the same code in Java, it's working :
#WebServlet(
name = "TwitterAPIServlet",
description = "This is used to test the servlet api",
urlPatterns = "/twitterAPIServlet")
public class TwitterAPIServlet extends HttpServlet {
#Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
PrintWriter out = resp.getWriter();
out.println("Request Done : </br>");
}
}
What can i do to make my Kotlin code working?
Most probably the issue is that Kotlin's standard library is not included in the generated WAR (or is not on a classpath if you run the exploded app). Make sure to include it in your build.
Instructions for Gradle can be found in the official examples repository: kotlin-examples.
Maven is similar: https://kotlinlang.org/docs/reference/using-maven.html.
In case of pure IDEA (though it's recommended to use one of the build tools above), check the projects settings:
You should see Kotlin's stdlib included in the artifact:
PLease find the error I am facing :
In springboot 2.1.1 I am getting below error :
APPLICATION FAILED TO START
Description: Parameter 1 of constructor in
org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration
required a bean of type
'org.springframework.boot.autoconfigure.web.servlet.DispatcherServletPath'
that could not be found.
The following candidates were found but could not be injected:
- Bean method 'dispatcherServletRegistration' in 'DispatcherServletAutoConfiguration.DispatcherServletRegistrationConfiguration'
not loaded because DispatcherServlet Registration found non dispatcher
servlet dispatcherServlet
Action:
Consider revisiting the entries above or defining a bean of type
'org.springframework.boot.autoconfigure.web.servlet.DispatcherServletPath'
in your configuration.
My configuration:
#Configuration
public class CXFConfig {
#Bean
public ServletRegistrationBean dispatcherServlet() {
final ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new CXFCdiServlet(), "/services/*");
servletRegistrationBean.setLoadOnStartup(1);
return servletRegistrationBean;
}
#Bean(name = Bus.DEFAULT_BUS_ID)
public SpringBus springBus() {
SpringBus springBus = new SpringBus();
springBus.getInInterceptors().add(new AppInboundInterceptor());
springBus.getOutInterceptors().add(new AppOutboundInterceptor());
return springBus;
}
}
Please confirm how to do the configuration?
dispatcherServlet() method doesn't work in Springboot 2.1.1
I solved this problem by change the method name from dispatcherServlet to disServlet.
Maybe you can try.
I've added the CDI feature to the server.xml file<feature>cdi-1.2</feature>.
My maven module contains the beans.xml inside the <module_name>/src/main/resources/META-INF folder.
This is the beans.xml content:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
version="1.1" bean-discovery-mode="all">
</beans>
But when I use the #Inject annotation it doesn't work, my bean is always null.
Code:
package ch.webapp.presentation;
...
#Path("/test/")
public class MyController {
#Inject
private MyService myService;
#GET
#Path("/foo/{count}")
#OAuthSecurity(scope = "login")
#Produces("application/json")
public Response news(#PathParam("count") int count) {
return Response
.ok(myService.getBar(count))
.build();
}
}
EDIT:
That's my bean
package ch.webapp.service;
...
#RequestScoped
public class MyService {
public String getBar(int count) {
return "foo";
}
}
I initialize jax-rs by extended the MFPJAXRSApplication class
package ch.webapp;
...
public class AccountApplication extends MFPJAXRSApplication {
#Override
protected void init() throws Exception {
}
#Override
protected void destroy() throws Exception {
}
#Override
protected String getPackageToScan() {
return getClass().getPackage().getName();
}
}
Environment details:
Launching mfp (WebSphere Application Server 8.5.5.8/wlp-1.0.11.cl50820151201-1942) on Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_172-b11 (en_CH)
Console Product version: 8.0.0.00-20180717-175523
What's wrong?
First it seems that websphere jax-rs implementation does not integrate jax-rs resources automatically unless you annotate them appropriately.
Put the jax-rs in a CDI managed context by annotating it appropriately
#Path("/test/")
#javax.enterprise.context.RequestScoped
public class MyController {
#Inject
private MyService myService;
#GET
#Path("/foo/{count}")
#OAuthSecurity(scope = "login")
#Produces("application/json")
public Response news(#PathParam("count") int count) {
return Response
.ok(myService.getBar(count))
.build();
}
}
Also be sure that the annotation used for your service is
#javax.enterprise.context.RequestScoped
Based on the inputs provided by you please go through the below checklist.
Your services and controllers are in the same module and its packaging type is war, So you must place your beans.xml in this path src/main/resources/WEB-INF/beans.xml. (If this is Java EE 7 application then beans.xml is optional.
In your AccountApplication class try hardcoding the package name to ch.webapp.presentation
#Override
protected String getPackageToScan() {
return "ch.webapp.presentation";
}
This is just to check Behaviour of MFPJAXRSApplication.getPackageToScan() method whether it is scanning the specified package only or its child packages too.
Except these, everything seems fine to me. If this still doesn't work add complete application startup logs so that community can find the root cause of it.
This is classical mistake. CDI works for managed beans (for instance EJB's and servlets). If you want to enable it on your JAXRS bean, you have to make it "managed", that is annotate MyController as (for instance) javax.annotation.ManagedBean or as a javax.ejb.Stateless.
Also beware that in case of webapp (.war), the beans.xml file has to be located in the WEB-INF folder !
I use EJB3+JavaEE6+JBoss. I am absolutely newbie in EJB. I wrote this code:
package server.ejb;
#Remote
public interface HelloUser
{
void sayHello( String name );
}
#Stateless
public class HelloUserBean implements HelloUser
{
#Override public void sayHello( String name )
{
System.out.println( "Hello " + name );
}
}
Having assebled this code with Maven and deployed it on JBoss, I wrote a client:
import server.ejb.HelloUserBean;
import javax.ejb.EJB;
public class Test
{
#EJB
public static HelloUserBean bean;
public static void main( String... args )
{
bean.sayHello( "Alex" );
}
}
After compiling, I've got NullPointerException. It said that bean was null. Using JDNI + PersistentContext I could get a success, but I still can't use DI as well. Please, help me
I reorginized my code! Actually I wrote another server-side project with the same sence and a standalone client-app. Here is the structure of server-side app:
#Remote
public interface EchoRemote{
String getMessage();
}
#Stateless
public class EchoBean implements EchoRemote{
#Override
public String getMessage(){
return "Hello From Stateless Bean";
}
}
public class InvokationClient{
#EJB
private EchoRemote bean;
public String getMessage(){
return bean.getMessage();
}
}
And here is the client-side standalone app:
import com.steeplesoft.client.InvokationClient;
public class Main{
public static void main( String... args ) throws IOException{
InvokationClient client = new InvokationClient();
FileWriter fileWriter = new FileWriter( "D:/invokation_client_test.txt" );
fileWriter.write( client.getMessage() );
fileWriter.close();
}
}
I've got empty file and NullPointerEception in console
I hope you can help me :) It's tremendously important for me!!!
So you start your Test-class standalone in a separate JVM. Where did you configure to which JBoss it should connect? Which component does the dependency injection? Since you don't have a DI container that manages the Test-class and since the connection to JBoss is not configured anywhere, this can't work.
In order to make it work, you can do the following:
1) Write a Servlet, use #EJB in the Servlet and deploy it on JBoss. Put your EJB and the Servlet in the same WAR to make it easy. The Servlet is managed by the container and DI works. As a newbie with EJB I would do this first.
2) Do a JNDI-Lookup and call your EJB from a standalone client as described in https://docs.jboss.org/author/display/AS71/EJB+invocations+from+a+remote+client+using+JNDI
3) Use an Application Client Container (ACC) as described in http://blogs.steeplesoft.com/posts/2011/02/22/java-ees-buried-treasure-the-application-client-container/ Deploy the EAR to jboss and invoke the client locally
$JBOSS_HOME/bin/appclient.sh --host remote://localhost:4447 ./local/path/to/enterpriseapplication-0.1-SNAPSHOT.ear#appclient-0.1-SNAPSHOT.jar
Remark: When I tried the example from blogs.steeplesoft.com, I had problems with the Swing classes, but it did work JBoss EAP 6.2, when I removed the Swing classes.
I've got a problem exxh EJB's.
First of all, my setup: I am using GlassFish & JEE6. I have got a REST-Service packaged as a WAR and a bean packaged as an EJB-Jar. They are not inside an EAR.
The EJB should be used from the REST-WAR via #EJB, but when I try to deploy the WAR, GlassFish shows this error:
Error occurred during deployment:
Exception while deploying the app [exx-upload-1.0] : Cannot resolve reference Local ejb-ref name=com.ex.exx.model.FileUpload/ocr,Local 3.x interface =com.ex.exx.api.IOCRService,ejb-link=null,lookup=,mappedName=,jndi-name=,refType=Session. Please see server.log for more details.
(The EJB was deployed before without any erros).
I have no clue why. Here is the EJB Code:
Interface:
#Local
public interface IOCRService {
public String performOCRonImage(BufferedImage input);
}
and Implementation:
#Stateless
#LocalBean
public class OCRScanner implements IOCRService {
private Logger logger = Logger.getLogger(this.getClass().getName());
private final static String NOT_RECOGNIZED = "Can not regocnize text";
/**
* Default constructor.
*/
public OCRScanner() {
logger.log(Level.INFO, "### OCR SCANNER BUILD" + this);
}
public String performOCRonImage(BufferedImage input) {
logger.log(Level.INFO, "### OCR SCANNER CALLED" + this);
}
...
And here is the important part in the WAR:
public class FileUpload {
private final File PROPERTIES_FILE = new File(
"fileUploadProperties.properties");
private final String PARAMETER_NAME = "file";
private final Logger logger = Logger.getLogger(this.getClass().getName());
#EJB
private IOCRService ocr;
public Response uploadFile(...) {
// do some stuff
logger.log(Level.INFO, "### EJB" + ocr.toString())
}
Anny suggestions? I can not find my failure here.
Solved this, by replaceing #Local with #Remote.
This works, however, I am not satisfied as I do not understand why.
Basically, given the specs (eg. explained in the tutorial), an application can only access other application's EJB, if they are decorated with #Remote.
Thus, you have 3 options:
decorate your EJB with #Remote (what you have done),
package both together inside an ear (as they would reside in the
same application then). But if you intent to deploy them in seperate
applications or even seperate servers, use 1.)
use CDI with #Inject, but this will still only discover the EJB if
either in the same application, or decorated as #Remote if not.
HTH,
Alex
You should not use #EJB if the target is not an EJB. I guess this is your case because you are trying to inject into a class in your WAR.
Instead use:
#Inject
private IOCRService ocr;
Basically, #Inject is better in most cases, because:
it is more typesafe,
it supports #Alternatives
it is aware of the scope of the injected object.
Another solution it's to add #Stateless(name=""), this worked form