使用Jersey客户端发送PATCH请求时遇JDK17反射访问错误如何解决？

问题描述 #

我尝试用Jersey客户端发送PATCH请求，代码如下：

WebTarget target = client.target(url);            
client.property(HttpUrlConnectorProvider.SET_METHOD_WORKAROUND,true);
Response response = target
                    .request(MediaType.APPLICATION_JSON_PATCH_JSON)
                    .header("Authorization", "Bearer " + token)
                    .method("PATCH", Entity.json(JSONUtils.convertToJSON(List.of(startStopPayload))));

但收到如下错误：

jakarta.ws.rs.ProcessingException: Unable to make field private final sun.net.www.protocol.https.DelegateHttpsURLConnection sun.net.www.protocol.https.HttpsURLConnectionImpl.delegate accessible: module java.base does not "opens sun.net.www.protocol.https" to unnamed module @47f37ef1
        at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:309)
        at org.glassfish.jersey.client.JerseyInvocation.lambda$invoke$0(JerseyInvocation.java:662)
        at org.glassfish.jersey.client.JerseyInvocation.call(JerseyInvocation.java:697)
        at org.glassfish.jersey.client.JerseyInvocation.lambda$runInScope$3(JerseyInvocation.java:691)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:205)
        at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:390)
        at org.glassfish.jersey.client.JerseyInvocation.runInScope(JerseyInvocation.java:691)
        at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:661)
        at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:439)
        at com.oracle.blockchain.opcp.restserver.client.k8s.K8sBlockchainPlatformInstanceClient.stopInstance(K8sBlockchainPlatformInstanceClient.java:183)
        at com.oracle.blockchain.opcp.restserver.client.k8s.K8sBlockchainPlatformInstanceClient$Proxy$_$$_WeldClientProxy.stopInstance(Unknown Source)
        at com.oracle.blockchain.opcp.restserver.manager.BPServiceManager.stopBlockchainPlatform(BPServiceManager.java:749)
        at com.oracle.blockchain.opcp.restserver.manager.BPServiceManager$Proxy$_$$_WeldSubclass.stopBlockchainPlatform(Unknown Source)
        at com.oracle.blockchain.opcp.restserver.manager.BPServiceManager$Proxy$_$$_WeldClientProxy.stopBlockchainPlatform(Unknown Source)
        at com.oracle.blockchain.opcp.restserver.resources.BlockchainPlatformResource.stopBlockchainPlatform(BlockchainPlatformResource.java:393)
        at com.oracle.blockchain.opcp.restserver.resources.BlockchainPlatformResource$Proxy$_$$_WeldClientProxy.stopBlockchainPlatform(Unknown Source)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:568)
        at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)
        at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:134)
        at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:177)
        at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:176)
        at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:81)
        at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:478)
        at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:400)
        at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:81)
        at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:255)
        at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
        at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
        at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
        at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:234)
        at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:684)
        at io.helidon.webserver.jersey.JerseySupport$JerseyHandler.lambda$doAccept$4(JerseySupport.java:334)
        at io.helidon.common.context.Contexts.runInContext(Contexts.java:117)
        at io.helidon.common.context.ContextAwareExecutorImpl.lambda$wrap$7(ContextAwareExecutorImpl.java:154)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base/java.lang.Thread.run(Thread.java:833)

我已经尝试添加client.property(HttpUrlConnectorProvider.SET_METHOD_WORKAROUND,true);，当前使用JDK17，请问该如何解决这个错误？

解决方案 #

1. 升级Jersey版本到兼容JDK17的版本 #

旧版本Jersey的HttpUrlConnector在JDK17的模块系统下，会通过反射访问JDK内部类，而JDK17收紧了模块访问权限导致报错。升级到Jersey 3.1.0及以上版本，该版本已修复JDK17兼容性问题，无需依赖反射处理PATCH请求。

2. 替换HTTP连接器 #

如果暂时无法升级Jersey，可以替换默认的HttpUrlConnector为兼容JDK17的Apache HttpClient连接器：

• 添加Apache HttpClient依赖（以Maven为例）：

  <dependency>
      <groupId>org.glassfish.jersey.connectors</groupId>
      <artifactId>jersey-apache-connector</artifactId>
      <version>你的Jersey版本</version>
  </dependency>
  

• 创建客户端时指定使用Apache连接器：

  ClientConfig config = new ClientConfig();
  config.connectorProvider(new ApacheConnectorProvider());
  Client client = ClientBuilder.newClient(config);
  

  该连接器发送PATCH请求时，无需设置SET_METHOD_WORKAROUND，也不会触发反射访问JDK内部类的问题。

3. 临时JVM参数（不推荐） #

如果以上方案无法实施，可通过JVM参数临时开放模块访问权限，但会破坏JDK封装性，仅作应急使用：

--add-opens java.base/sun.net.www.protocol.https=ALL-UNNAMED

内容的提问来源于stack exchange，提问作者Mehul