Following the Spring WebFlux document, I set up a WebFlux for FreeMarker configuration s the following:
#Configuration
#EnableWebFlux
public class WebConfig implements WebFluxConfigurer {
#Override
public void configureViewResolvers(ViewResolverRegistry registry) {
final FreeMarkerViewResolver freeMarkerViewResolver = new FreeMarkerViewResolver(
"", ".ftl");
registry.viewResolver(freeMarkerViewResolver);
}
#Bean
public FreeMarkerConfigurer freeMarkerConfigurer() {
FreeMarkerConfigurer configurer = new FreeMarkerConfigurer();
configurer.setTemplateLoaderPath("classpath:/templates");
return configurer;
}
// #Override <-- it causes a compile error
public void configurePathMatch(PathMatchConfigurer configurer) {
configurer
.setUseCaseSensitiveMatch(true)
.setUseTrailingSlashMatch(false);
}
}
The first compile error I run into is
method does not override or implement a method from a supertype
I guess that it is a documentation error. After commenting the override annotation out, I get a run time error:
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of method httpHandler in org.springframework.boot.autoconfigure.web.reactive.HttpHandlerAutoConfiguration$AnnotationConfig required a bean of type 'org.springframework.boot.autoconfigure.web.reactive.WebFluxProperties' that could not be found.
Action:
Consider defining a bean of type 'org.springframework.boot.autoconfigure.web.reactive.WebFluxProperties' in your configuration.
I, however, am unable to find out how WebFluxProperties shall be defined. Please let me know if you have the information.
Related
I'm having two routes in two separated projects :
First route is setting the header with a data format bean name as a constant :
setHeader("dataFormatBeanName", constant("myFirstList"))
First route :
public class MyTest {
#Configuration
public static class MyTestConfig extends CamelConfiguration {
#Bean(name = "myFirstList")
public DataFormat getMyFirstListDataFormat() {
return new MyFirstListDataFormat();
}
#Bean(name = "mySecondList")
public DataFormat getMySecondListDataFormat() {
return new MySecondListDataFormat();
}
#Bean
public RouteBuilder route() {
return new RouteBuilder() {
#Override
public void configure() throws Exception {
from("direct:testFirstDataFormat").setHeader("dataFormatBeanName", constant("myFirstList")).to("direct:myRoute");
from("direct:testSecondDataFormat").setHeader("dataFormatBeanName", constant("mySecondList")).to("direct:myRoute");
}
};
}
}
}
Second route is supposed to retrieve the bean name from the header and use it as a custom marshaller. Something like :
custom(header("dataFormatBeanName"))
(doesn't compile)
Anyone knows how I'm supposed to get my bean name from the header to use it in the custom method ?
#Component
public class MyRouteBuilder extends RouteBuilder {
#Override
public void configure() throws Exception {
final RouteDefinition routedefinition = this.from("direct:myRoute");
routedefinition.marshal().custom(??????????).to("netty4:tcp://{{route.address}}:{{port}}?textline=true&sync=true");
}
After a few more hours searching, here is the solution a found :
No changes in the first class.
Second class uses an anonymous DataFormat in which I retrieve the bean name from the header and get the spring bean from camel context before calling its marshal method.
The AbstractXxxDataFormat class belongs to project2 and is inherited by the Project1 DataFormat.
#Override
public void configure() throws Exception {
final RouteDefinition routedefinition = this.from("direct:myRoute");
routedefinition.marshal(new DataFormat() {
#Override
public void marshal(final Exchange exchange, final Object graph, final OutputStream stream) throws Exception {
AbstractXxxDataFormat myDataFormat = (AbstractGoalDataFormat) getContext().getRegistry().lookupByName(exchange.getIn().getHeader("dataFormatBeanName", String.class));
myDataFormat.marshal(exchange, graph, stream);
}
#Override
public Object unmarshal(final Exchange exchange, final InputStream stream) throws Exception {
return null;
}
});
routedefinition.to("netty4:tcp://{{route.address}}:{{port}}?textline=true&sync=true");
}
If there's any better solution available, I'll be interested.
Have you tried simple("${header.dataFormatBeanName}") to access the header?
Also, rather than passing the format bean name in a header in the first place, why not factor out each .marshal() call into two subroutes (one for formatBeanA and one for formatBeanB) and then call the appropriate subroute rather than setting the header in the first place? I believe this could be a cleaner approach.
If you really need to get it in the route as a variable (as opposed to a predicate to be used in the builder api) you could use an inline processor to extract it:
public class MyRouteBuilder extends RouteBuilder {
public void configure() throws Exception {
from("someEndpoint")
.process(new Processor() {
public void process(Exchange exchange) throws Exception {
String beanName = exchange.getHeader("beanNameHeader");
}
});
}
}
Just be careful of scope and concurrency when storing the extracted beanName however.
A collegue of mine (thanks to him) found the definite solution :
set bean name in the exchange properties :
exchange.setProperty("myDataFormat", "myDataFormatAutowiredBean");
retrieve the dataFormat bean with RecipientList pattern and (un)marshal :
routedefinition.recipientList(simple("dataformat:${property.myDataFormat}:marshal"));
routedefinition.recipientList(simple("dataformat:${property.myDataFormat}:unmarshal"));
Very concise and works just fine.
Error activating IntPtr
I'm trying to configure FluentSecurity (v.1.4) with Ninject (v.3) in an ASP.NET MVC 4 application.
I can't set up the ResolveServicesUsing() configuration expression without throwing the above error.
SecurityConfigurator.Configure(
configuration =>
{
configuration.ResolveServicesUsing(
DependencyResolver.Current.GetServices,
DependencyResolver.Current.GetService);
...
I've also tried using another overload for ResolveServicesUsing()
configuration.ResolveServicesUsing(
type => DependencyResolver.Current.GetServices(type));
FluentSecurity needs to be configured with Ninject to inject the method for finding my users' roles and also for the PolicyViolationHandler implementations.
UPDATE
I've found I can leave out the offending lines and still have my GetRolesFrom() implementation called (hurrah):
configuration.GetRolesFrom(
() =>
((IPersonManager)DependencyResolver
.Current
.GetService(typeof(IPersonManager)))
.GetCurrentUserRoles());
I still can't get my PolicyViolationHandler to work, however:
public class RequireRolePolicyViolationHandler : IPolicyViolationHandler
{
public ActionResult Handle(PolicyViolationException exception)
{
return new RedirectToRouteResult(
new RouteValueDictionary(
new
{
action = "AccessDenied",
controller = "Home"
}));
}
}
I'm doing the binding in a NinjectModule like this:
public class SecurityModule : NinjectModule
{
public override void Load()
{
this.Kernel.Bind<IPolicyViolationHandler>()
.To<RequireRolePolicyViolationHandler>();
}
}
Error activating IntPtr
Unfortunately you havn't posted the complete StackTrace. But usually you will get this exception when injecting a Func to some class without having a binding or using the Factory extension.
I use Fluent Security with Ninject as IOC container.
In your Fluent Security configuration, you need to set the service locator to the NinjectServiceLocator.
public static void Configure(IKernel kernel)
{
var locator = new NinjectServiceLocator(kernel);
ServiceLocator.SetLocatorProvider(() => locator);
SecurityConfigurator.Configure(
configuration =>
{
configuration.GetAuthenticationStatusFrom(() => HttpContext.Current.User.Identity.IsAuthenticated);
....
}
You can get the locator here.
Hope this helps
I have a problem with injecting EJB inside of a REST service (using jersey on glassfish 3.2 server) and I'm puzzled.
I have an EJB interface declared as:
import javax.ejb.Local;
#Local
public interface TestServiceLocal {
public String getText();
}
and the class bean that implements it:
import javax.ejb.Local;
import javax.ejb.Stateless;
/**
* Session Bean implementation class TestService
*/
#Stateless
#Local(TestServiceLocal.class)
public class TestService implements Serializable, TestServiceLocal {
private static final long serialVersionUID = 1L;
/**
* Default constructor.
*/
public TestService() {
// TODO Auto-generated constructor stub
}
#Override
public String getText() {
return this.getClass().getName();
}
}
The REST service looks like:
#Path("/service")
#Stateless
public class TestRestService {
#EJB(beanName="TestService")
private TestServiceLocal testService;
public TestRestService () {
}
#GET
#Produces(MediaType.TEXT_PLAIN)
#Path("/events")
public String getText() {
return testService.getText();
}
}
The problem is that when the REST service is called the bean cannot be created:
SEVERE: EJB5070: Exception creating stateless session bean : [TestRestService]
WARNING: EJB5184:A system exception occurred during an invocation on EJB TestRestService, method: public java.lang.String TestRestService.getText()
WARNING: javax.ejb.EJBException: javax.ejb.EJBException: javax.ejb.CreateException: Could not create stateless EJB
at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:454)
at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:2547)
at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:1899)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:212)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
at com.sun.proxy.$Proxy839.getText(Unknown Source)
I had already took a look at the answers posted here but none of them seemed to work for me. Any help will be appreciated. Thank you!
PS: I forgot to mentioned (don't know if it's relevant). My project is created under eclipse Juno as Dynamic Web Project.
I am trying to bind a repository to property using Ninject but always get null reference of binding object. I will explain the problem using code below.
public interface IServiceRepository
{
User GetUser(string email);
IQueryable<Statistic> GetStatisticForCurrentMonth(string ip);
void InsertStatistic(ConversionModel conversionModel);
class ServiceRepository : IServiceRepository
{
//Implementation of the Interface
}
I am would like to bind the repository above to class below while the class is created. Unfortunately Repository object is always null. Maybe I have misunderstood how Ninject is working? How to solve the problem?
public class Converter
{
[Inject]
public static IServiceRepository Repository { get; set; }
private static Converter _converter;
public static Converter Instance
{
get { return _Converter ?? (_Converter = new Converter ());
}
}
Ninject activator code
private static void RegisterServices(IKernel kernel)
{
kernel.Bind<IServiceRepository>().ToMethod(context => Converter.Repository);
}
Update
I have tried to rewrite code like this
public class Converter
{
private readonly IServiceRepository _repository;
public Converter(IServiceRepository repository)
{
_repository = repository;
}
//skip code
}
The test...
[TestMethod]
public void ConverterInstanceCreated()
{
using (IKernel kernel = new StandardKernel())
{
kernel.Bind<IServiceRepository>().To<ServiceRepository>();
Assert.IsNotNull(kernel.Get<Converter>());
}
}
gives exception
Test method PC.Tests.NinjectTest.ConverterInstanceCreated threw exception:
Ninject.ActivationException: Error activating IServiceRepository
No matching bindings are available, and the type is not self-bindable.
Activation path:
2) Injection of dependency IServiceRepository into parameter repository of constructor of type Converter
1) Request for Converter
I just lost, I am trying to understand how Ninject is working for about week without any success. In my case why this exception is thrown?
Also please someone post working example with one repository injection to singleton class.
Ninject does not inject statics. Change the coynverter to a non-static class and configure it as Singleton in ninject. Also use constructor injection and make the repo a private field.
Now you can inject the converter to the constructors where you need it.
Even though you are using Property injection and not Constructor injection I think it would still be
private static void RegisterServices(IKernel kernel)
{
kernel.Bind<IServiceRepository>().To<ServiceRepository>();
}
As ninject still just needs to know what concrete type to map to the Interface
I haven't tested this so apologies if it's wrong.
Here is my bean that is trying to inject a singleton bean InformationService :
#Path("/information/{name}")
#Stateless (name="InformationResource")
public class InformationResource {
#EJB
private InformationService appService;
#GET
#Produces(MediaType.APPLICATION_XML)
public Information getInfo(#PathParam("name") String name){
return appService.getMap().get(name);
}
#PUT
#POST
#Consumes(MediaType.APPLICATION_XML)
public Information putInfo(#PathParam("name") String name, Information info){
return appService.getMap().put(name,info);
}
#DELETE
public void deleteInfo(#PathParam("name") String name){
appService.getMap().remove(name);
}
}
This is the InformationService class
#Singleton
public class InformationService {
private Map<String,Information> map;
#PostConstruct
public void init(){
map = new HashMap<String,Information>();
map.put("daud", new Information("B.Tech","Lucknow"));
map.put("anuragh", new Information("M.Sc","Delhi"));
}
public Map<String,Information> getMap(){
return map;
}
}
Its part of a very simple JAX-RS implementation and I am deploying as war in JBoss 6.1 Final. The problem is that InformationService throwing a NullPointerException when I make the proper get request. If I initialize appService explicitly, everything works fine. Why is #EJB annotation not working ?
Are you using Jersey as REST implementation? If so, EJB injection is not supported out of the box.
This link provides more information on this and also a solution.
Check that your #Singleton is javax.ejb.Singleton.
Any other exceptions before NPE ?