1

Github 上提供了重现此问题的示例项目

我正在使用 quarkus-rest-client 从我的 Quarkus 应用程序调用 REST 服务。

ExampleResource提供一个使用http://localhost:8080/echo调用的端点：https://postman-echo.com/getRestClient

@Path("/echo")
public class ExampleResource {

    private final RestClient restClient;

    public ExampleResource(RestClient restClient){
        this.restClient = restClient;
    }

    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public Response get() {
        return restClient.get();
    }
}

@ApplicationScoped
public class RestClient {

    private final Client httpClient;

    public RestClient() {
        this.httpClient = ResteasyClientBuilder.newBuilder().build();
    }

    public Response get() {
        return httpClient.target("https://postman-echo.com/get").request().get();
    }
}

虽然它工作正常，但当我尝试生成本机图像时它失败了：

./mvnw package -Pnative -Dquarkus.native.container-build=true 

Error: No instances of sun.security.provider.NativePRNG are allowed in the image heap as this class should be initialized at image runtime. To see how this object got instantiated use -H:+TraceClassInitialization.
Detailed message:
Trace:  object java.security.SecureRandom
        object sun.security.ssl.SSLContextImpl$TLSContext
        object sun.security.ssl.SSLSocketFactoryImpl
        object org.apache.http.conn.ssl.SSLConnectionSocketFactory
        object java.util.concurrent.ConcurrentHashMap$Node
        object java.util.concurrent.ConcurrentHashMap$Node[]
        object java.util.concurrent.ConcurrentHashMap
        object org.apache.http.config.Registry
        object org.apache.http.impl.conn.DefaultHttpClientConnectionOperator
        object org.apache.http.impl.conn.PoolingHttpClientConnectionManager
        object org.apache.http.impl.client.HttpClientBuilder$2
        object java.lang.Object[]
        object java.util.ArrayList
        object org.apache.http.impl.client.InternalHttpClient
        object org.jboss.resteasy.client.jaxrs.engines.ApacheHttpClient43Engine
        object org.jboss.resteasy.client.jaxrs.internal.ResteasyClientImpl
        object org.codependent.RestClient_ClientProxy
        object org.codependent.RestClient_Bean
        object java.lang.Object[]
        object java.util.ArrayList
        object io.quarkus.arc.impl.ArcContainerImpl
        object io.quarkus.arc.runtime.ArcRecorder$2
        field io.quarkus.resteasy.common.runtime.QuarkusInjectorFactory.CONTAINER

com.oracle.svm.core.util.UserError$UserException: No instances of sun.security.provider.NativePRNG are allowed in the image heap as this class should be initialized at image runtime. To see how this object got instantiated use -H:+TraceClassInitialization.
Detailed message:
Trace:  object java.security.SecureRandom
        object sun.security.ssl.SSLContextImpl$TLSContext
        object sun.security.ssl.SSLSocketFactoryImpl
        object org.apache.http.conn.ssl.SSLConnectionSocketFactory
        object java.util.concurrent.ConcurrentHashMap$Node
        object java.util.concurrent.ConcurrentHashMap$Node[]
        object java.util.concurrent.ConcurrentHashMap
        object org.apache.http.config.Registry
        object org.apache.http.impl.conn.DefaultHttpClientConnectionOperator
        object org.apache.http.impl.conn.PoolingHttpClientConnectionManager
        object org.apache.http.impl.client.HttpClientBuilder$2
        object java.lang.Object[]
        object java.util.ArrayList
        object org.apache.http.impl.client.InternalHttpClient
        object org.jboss.resteasy.client.jaxrs.engines.ApacheHttpClient43Engine
        object org.jboss.resteasy.client.jaxrs.internal.ResteasyClientImpl
        object org.codependent.RestClient_ClientProxy
        object org.codependent.RestClient_Bean
        object java.lang.Object[]
        object java.util.ArrayList
        object io.quarkus.arc.impl.ArcContainerImpl
        object io.quarkus.arc.runtime.ArcRecorder$2
        field io.quarkus.resteasy.common.runtime.QuarkusInjectorFactory.CONTAINER

如果我按照Quarkus 指南中有关此错误的说明，在 pom 中添加其他构建参数，它仍然会失败：

<quarkus.native.additional-build-args>--initialize-at-run-time=org.codependent.RestClient,-H:+TraceClassInitialization</quarkus.native.additional-build-args>

./mvnw package -Pnative -Dquarkus.native.container-build=true 

com.oracle.svm.core.util.UserError$UserException: Classes that should be initialized at run time got initialized during image building:
 org.codependent.RestClient the class was requested to be initialized at build time (from the command line). io.quarkus.runner.ApplicationImpl caused initialization of this class with the following trace: 
        at org.codependent.RestClient.<clinit>(RestClient.java)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at org.codependent.RestClient_Bean.<init>(RestClient_Bean.zig:135)
        at io.quarkus.arc.setup.Default_ComponentsProvider.addBeans1(Default_ComponentsProvider.zig:106)
        at io.quarkus.arc.setup.Default_ComponentsProvider.getComponents(Default_ComponentsProvider.zig:38)
        at io.quarkus.arc.impl.ArcContainerImpl.<init>(ArcContainerImpl.java:103)
        at io.quarkus.arc.Arc.initialize(Arc.java:20)
        at io.quarkus.arc.runtime.ArcRecorder.getContainer(ArcRecorder.java:35)
        at io.quarkus.deployment.steps.ArcProcessor$generateResources20.deploy_0(ArcProcessor$generateResources20.zig:72)
        at io.quarkus.deployment.steps.ArcProcessor$generateResources20.deploy(ArcProcessor$generateResources20.zig:36)
        at io.quarkus.runner.ApplicationImpl.<clinit>(ApplicationImpl.zig:338)

org.codependent.RestClient_ClientProxy the class was requested to be initialized at build time (subtype of org.codependent.RestClient). io.quarkus.runner.ApplicationImpl caused initialization of this class with the following trace: 
        at org.codependent.RestClient_ClientProxy.<clinit>(RestClient_ClientProxy.zig)
        at org.codependent.RestClient_Bean.<init>(RestClient_Bean.zig:164)
        at io.quarkus.arc.setup.Default_ComponentsProvider.addBeans1(Default_ComponentsProvider.zig:106)
        at io.quarkus.arc.setup.Default_ComponentsProvider.getComponents(Default_ComponentsProvider.zig:38)
        at io.quarkus.arc.impl.ArcContainerImpl.<init>(ArcContainerImpl.java:103)
        at io.quarkus.arc.Arc.initialize(Arc.java:20)
        at io.quarkus.arc.runtime.ArcRecorder.getContainer(ArcRecorder.java:35)
        at io.quarkus.deployment.steps.ArcProcessor$generateResources20.deploy_0(ArcProcessor$generateResources20.zig:72)
        at io.quarkus.deployment.steps.ArcProcessor$generateResources20.deploy(ArcProcessor$generateResources20.zig:36)
        at io.quarkus.runner.ApplicationImpl.<clinit>(ApplicationImpl.zig:338)


        at com.oracle.svm.core.util.UserError.abort(UserError.java:65)
        at com.oracle.svm.hosted.classinitialization.ConfigurableClassInitialization.checkDelayedInitialization(ConfigurableClassInitialization.java:510)
        at com.oracle.svm.hosted.classinitialization.ClassInitializationFeature.duringAnalysis(ClassInitializationFeature.java:187)
        at com.oracle.svm.hosted.NativeImageGenerator.lambda$runPointsToAnalysis$8(NativeImageGenerator.java:710)
        at com.oracle.svm.hosted.FeatureHandler.forEachFeature(FeatureHandler.java:63)
        at com.oracle.svm.hosted.NativeImageGenerator.runPointsToAnalysis(NativeImageGenerator.java:710)
        at com.oracle.svm.hosted.NativeImageGenerator.doRun(NativeImageGenerator.java:530)
        at com.oracle.svm.hosted.NativeImageGenerator.lambda$run$0(NativeImageGenerator.java:445)
        at java.util.concurrent.ForkJoinTask$AdaptedRunnableAction.exec(ForkJoinTask.java:1386)
        at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
        at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
        at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
        at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)

当RestClient被定义为@ApplicationScoped组件时会出现问题。如果我更改它以使其实例化，则本机图像生成没有任何问题：

@Path("/echo")
public class ExampleResource {

    private final RestClient restClient;

    public ExampleResource(){
        this.restClient = new RestClient();
    }

    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public Response get() {
        return restClient.get();
    }
}

public class RestClient {

    private final Client httpClient;

    public RestClient() {
        this.httpClient = ResteasyClientBuilder.newBuilder().build();
    }

    public Response get() {
        return httpClient.target("https://postman-echo.com/get").request().get();
    }

}

./mvnw package -Pnative -Dquarkus.native.container-build=true 

[INFO] [io.quarkus.deployment.QuarkusAugmentor] Quarkus augmentation completed in 72716ms
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  01:14 min
[INFO] Finished at: 2020-03-21T12:48:07+01:00
[INFO] -

问题是如何将其定义RestClient为@ApplicationScoped组件并能够生成本机图像？

4

1 回答 1

0

正如在此处回答的那样，您使用的不是 MicroProfile REST 客户端，而是 JAX-RS 客户端。

在任何情况下，您都可以通过将RestClient类更改为：

@ApplicationScoped
public class RestClient {

    private Client client;

    public Response get() {
        return getClient().target("https://postman-echo.com/get").request().get();
    }

    private Client getClient() {
        if (client == null) {
            client = ResteasyClientBuilder.newBuilder().build();
        }
        return client;
    }

}

并添加：

quarkus.native.enable-https-url-handler=true

到application.properties

于 2020-03-23T09:14:00.847 回答