SSL 异常：初始化 Alexa Skill Management API (SMAPI) 时“在握手期间收到 close_notify”

2024-04-07

我正在尝试使用 SMAPI 通过 Java 与我的 Alexa Skill 进行交互。

以下代码失败：

package io.mirko.impl;

import com.amazon.ask.model.services.skillManagement.SkillManagementService;
import com.amazon.ask.smapi.SmapiClients;
import org.junit.jupiter.api.Test;

public class IntegrationTest {
    // These come from `ask util generate-lwa-tokens` passing ClientID and SecretID from LWA
    private static final String CLIENT_ID = "<client_id>";
    private static final String CLIENT_SECRET = "<client_secret>";
    private static final String REFRESH_TOKEN = "<refresh_token>";
    private static final String SKILL_ID = "<skill_id>";
    @Test
    public void test() {
        final SkillManagementService smapiClient = SmapiClients.createDefault(
                CLIENT_ID,
                CLIENT_SECRET,
                REFRESH_TOKEN
        );
        System.out.println(smapiClient.getSkillManifestV1(SKILL_ID, "developement"));
    }
}

您可以在以下位置找到 SSL 日志：这个链接 https://gist.github.com/fcracker79/4d34e7f4535904860894fbbb0a0354e1失败的情况如下：

"throwable" : {
  javax.net.ssl.SSLProtocolException: Received close_notify during handshake
    at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:126)
    at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:117)
    at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:308)
    at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:264)
    at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:255)
    at java.base/sun.security.ssl.Alert$AlertConsumer.consume(Alert.java:244)
    at java.base/sun.security.ssl.TransportContext.dispatch(TransportContext.java:181)
    at java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:164)
    at java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1152)
    at java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1063)
    at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:402)
    at org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:436)
    at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:384)
    at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:374)
    at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393)
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
    at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
    at com.amazon.ask.services.ApacheHttpApiClient.invoke(ApacheHttpApiClient.java:70)
    at com.amazon.ask.model.services.BaseServiceClient.executeRequest(BaseServiceClient.java:124)
    at com.amazon.ask.model.services.BaseServiceClient.invoke(BaseServiceClient.java:87)
    at com.amazon.ask.model.services.lwa.LwaClient.generateAccessToken(LwaClient.java:112)
    at com.amazon.ask.model.services.lwa.LwaClient.getAccessTokenForScope(LwaClient.java:82)
    at com.amazon.ask.model.services.lwa.LwaClient.getAccessTokenForRefreshToken(LwaClient.java:65)
    at com.amazon.ask.model.services.skillManagement.SkillManagementServiceClient.callGetSkillManifestV1(SkillManagementServiceClient.java:3484)
    at com.amazon.ask.model.services.skillManagement.SkillManagementServiceClient.getSkillManifestV1(SkillManagementServiceClient.java:3513)
    at io.mirko.impl.IntegrationTest.test(IntegrationTest.java:20)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:675)
    at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:125)
    at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:132)
    at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:124)
    at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:74)
    at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:104)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:62)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:43)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:35)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:202)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:198)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:69)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:229)
    at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:197)
    at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:211)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:191)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128)
    at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:69)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)}

)
javax.net.ssl|DEBUG|01|main|2019-12-21 12:34:44.530 CET|SSLSocketImpl.java:1361|close the underlying socket
javax.net.ssl|DEBUG|01|main|2019-12-21 12:34:44.531 CET|SSLSocketImpl.java:1380|close the SSL connection (passive)


com.amazon.ask.model.services.ServiceException: Call to service failed: There was an error executing the request

    at com.amazon.ask.model.services.BaseServiceClient.executeRequest(BaseServiceClient.java:126)
    at com.amazon.ask.model.services.BaseServiceClient.invoke(BaseServiceClient.java:87)
    at com.amazon.ask.model.services.lwa.LwaClient.generateAccessToken(LwaClient.java:112)
    at com.amazon.ask.model.services.lwa.LwaClient.getAccessTokenForScope(LwaClient.java:82)
    at com.amazon.ask.model.services.lwa.LwaClient.getAccessTokenForRefreshToken(LwaClient.java:65)
    at com.amazon.ask.model.services.skillManagement.SkillManagementServiceClient.callGetSkillManifestV1(SkillManagementServiceClient.java:3484)
    at com.amazon.ask.model.services.skillManagement.SkillManagementServiceClient.getSkillManifestV1(SkillManagementServiceClient.java:3513)
    at io.mirko.impl.IntegrationTest.test(IntegrationTest.java:20)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:675)
    at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:125)
    at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:132)
    at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:124)
    at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:74)
    at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:104)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:62)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:43)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:35)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:202)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:198)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:69)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:229)
    at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:197)
    at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:211)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:191)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128)
    at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:69)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
Caused by: java.lang.RuntimeException: There was an error executing the request
    at com.amazon.ask.services.ApacheHttpApiClient.invoke(ApacheHttpApiClient.java:74)
    at com.amazon.ask.model.services.BaseServiceClient.executeRequest(BaseServiceClient.java:124)
    ... 70 more
Caused by: javax.net.ssl.SSLProtocolException: Received close_notify during handshake
    at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:126)
    at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:117)
    at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:308)
    at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:264)
    at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:255)
    at java.base/sun.security.ssl.Alert$AlertConsumer.consume(Alert.java:244)
    at java.base/sun.security.ssl.TransportContext.dispatch(TransportContext.java:181)
    at java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:164)
    at java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1152)
    at java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1063)
    at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:402)
    at org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:436)
    at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:384)
    at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:374)
    at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393)
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
    at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
    at com.amazon.ask.services.ApacheHttpApiClient.invoke(ApacheHttpApiClient.java:70)
    ... 71 more



Process finished with exit code 255

相比之下，以下普通 Java 代码运行良好，我可以获得访问令牌：

package io.mirko;

import org.apache.http.HttpHost;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.protocol.BasicHttpContext;

import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.net.HttpURLConnection;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.URL;
import java.nio.charset.StandardCharsets;

public class Main {
    private static final String HOST = "api.amazon.com";
    private static final String URL = String.format("https://%s/auth/O2/token", HOST);
    private static final String URL_PARAMETERS = "grant_type=refresh_token&client_id=<client_id>&client_secret=<client_secret>&refresh_token=<refresh_token>";

    private static String connectVanillaJava() throws Exception {
        byte[] postData = URL_PARAMETERS.getBytes( StandardCharsets.UTF_8 );
        int postDataLength = postData.length;
        URL url = new URL(URL);
        HttpURLConnection conn= (HttpURLConnection) url.openConnection();
        conn.setDoOutput(true);
        conn.setInstanceFollowRedirects(false);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty("charset", "utf-8");
        conn.setRequestProperty("Content-Length", Integer.toString(postDataLength ));
        conn.setUseCaches(false);
        try(DataOutputStream wr = new DataOutputStream(conn.getOutputStream())) {
            wr.write( postData );
        }
        DataInputStream is = new DataInputStream(conn.getInputStream());
        byte[] data = new byte[32768];
        final ByteArrayOutputStream os = new ByteArrayOutputStream();
        for (int i = is.read(data); i > 0; i = is.read(data)) {
            os.write(data, 0, i);
        }
        return new String(os.toByteArray());
    }

    public static void main(String ... args) throws Exception {
        System.out.print("Test Vanilla Java...");
        final String vanillaJavaResult = connectVanillaJava();
        System.out.format("SUCCESS!\nReturned %s\n", vanillaJavaResult);
    }
}

你可以得到here https://gist.github.com/fcracker79/81bc7a9fdc1dda4617b404c8aedf1c45SSL 日志以及返回的响应，

我看到的主要区别是，之后Produced client Finished handshake message，在第一种情况下，超过 10 秒后，我收到错误，而在工作示例中我收到Consuming server Finished handshake message.

谢谢您的帮助。

附：根据 SSL 日志的差异，中断的交互似乎是从以下位置接收 SSL 证书的：api.amazonalexa.com，即向下。通过在浏览器中访问该主机，我收到这条信息 http://g-ecx.images-amazon.com/images/G/01/website/errors/503/generic.png。它说该网站暂时无法访问。我已经使用该主机修改了工作示例，似乎我遇到了相同的错误。

附言我设法通过使用创建 LWAClient 来获取身份验证令牌api.amazon.com。与任何互动api.amazonalexa.com提出了上述问题。

inal LwaClient lwaClient = LwaClient.builder()
                .withAuthenticationConfiguration(
                        DefaultAuthenticationConfiguration.builder()
                                .withClientSecret(CLIENT_SECRET)
                                .withClientId(CLIENT_ID)
                                .withRefreshToken(REFRESH_TOKEN)
                                .build()
                )
                .withGrantType(GrantType.REFRESH_TOKEN)
                .withApiConfiguration(DefaultApiConfiguration.builder()
                        .withApiClient(apiConfiguration.getApiClient())
                        // Without this, it does not work
                        .withApiEndpoint("https://api.amazon.com")
                        .withSerializer(apiConfiguration.getSerializer())
                        .build())
                .build();
        final SkillManagementServiceClient myClient = new SkillManagementServiceClient(
                apiConfiguration, lwaClient);
        // This WORKS
        System.out.println(lwaClient.getAccessTokenForRefreshToken());

最后我设法解决了这个问题。通过在调试模式下运行代码，可以捕获将要运行且与问题相关的请求。如果您使用调用该请求curl，您立即收到一个错误，即自我解释：

curl -vvv -X POST -H "Content-Type: application/json" -H "Authorization: Bearer Atza|XXXXX" -d "{}" https://api.amazonalexa.com/v1/skills/<skill_id>/simulations
Note: Unnecessary use of -X or --request, POST is already inferred.
*   Trying 143.204.11.219...
* TCP_NODELAY set
* Connected to api.amazonalexa.com (143.204.11.219) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*   CAfile: /etc/ssl/certs/ca-certificates.crt
  CApath: /etc/ssl/certs
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Client hello (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-AES128-GCM-SHA256
* ALPN, server accepted to use h2
* Server certificate:
*  subject: CN=api.amazonalexa.com
*  start date: May  3 00:00:00 2019 GMT
*  expire date: Apr 26 12:00:00 2020 GMT
*  subjectAltName: host "api.amazonalexa.com" matched cert's "api.amazonalexa.com"
*  issuer: C=US; O=Amazon; OU=Server CA 1B; CN=Amazon
*  SSL certificate verify ok.
* Using HTTP2, server supports multi-use
* Connection state changed (HTTP/2 confirmed)
* Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
* Using Stream ID: 1 (easy handle 0x55ba1fa314b0)
> POST /v1/skills/<skill_id>/simulations HTTP/2
> Host: api.amazonalexa.com
> User-Agent: curl/7.58.0
> Accept: */*
> Content-Type: application/json
> Authorization: Bearer Atza|xxxxx
> Content-Length: 2
> 
* Connection state changed (MAX_CONCURRENT_STREAMS updated)!
* We are completely uploaded and fine
< HTTP/2 400 
< content-type: application/json
< content-length: 110
< server: Server
< date: Thu, 26 Dec 2019 15:53:04 GMT
< x-amzn-requestid: 300413fa-09db-4a13-95a7-a4749ef5130a
< x-amz-date: Thu, 26 Dec 2019 15:53:04 GMT
< vary: Accept-Encoding,X-Amzn-CDN-Cache,X-Amzn-AX-Treatment,User-Agent
< x-amz-rid: 4TW7K1A311QVNFQ8M6BJ
< x-cache: Error from cloudfront
< via: 1.1 1a3a682cf8d843fe52f3224f60584fad.cloudfront.net (CloudFront)
< x-amz-cf-pop: MXP64-C1
< x-amz-cf-id: djdsKqkXYy8BOzvhZyD9G2iUXa8NeLscxBi45x4fs6EUc3C6tOrD6Q==
< 
* Connection #0 to host api.amazonalexa.com left intact
{"message":"Invalid request payload. Please ensure that the request payload has all required fields present."}

我不明白的是为什么 Java 库会陷入这种情况。

总而言之，我的问题是solved.

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