【发布时间】：2020-12-26 07:21:10
【问题描述】：
我有一个 quarkus 应用程序正在尝试连接到 mysql 数据库，这两个数据库都在 docker-compose 中运行。应用程序已启动，正在处理请求（这里是 docker-compose 日志的屏幕截图，显示 quarkus 应用程序和 mysql 正在启动）： [![docker-compose 启动日志][1]][1]
为了验证 quarkus 应用程序是否正常工作，我向：http://localhost:8080/health/liveliness 发出请求。屏幕截图如下所示： [![活跃度检查][2]][2]
数据库也已启动并可用（验证您是否可以运行mysql -h 192.168.0.4 -P 3306 -u user -p，当提示输入密码时，输入密码）。您可以在下面看到我能够登录并运行一些伪命令的屏幕截图：
但是，当我提出涉及对数据库运行查询的请求时，它总是超时。完整的日志（包括堆栈跟踪）如下所示：
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
reading-comprehension-ws_1 | 2020-09-07 21:59:51,526 INFO [com.con.rea.int.DebugInterceptor] (executor-thread-1) Unique id: 6060ad67-723a-4899-afa4-0811ec9dc3b4 com.connor.reading.dao.AssessmentDao.getAllAssessmentsthrew exception of type class com.connor.reading.exception.SystemException for parameters empty (no parameters)
reading-comprehension-ws_1 | 2020-09-07 21:59:51,526 INFO [com.con.rea.int.DebugInterceptor] (executor-thread-1) Unique id: 6060ad67-723a-4899-afa4-0811ec9dc3b4 com.connor.reading.service.AssessmentService.getAssessmentsthrew exception of type class com.connor.reading.exception.SystemException for parameters NULL, NULL
reading-comprehension-ws_1 | 2020-09-07 21:59:51,526 INFO [com.con.rea.int.DebugInterceptor] (executor-thread-1) Unique id: 6060ad67-723a-4899-afa4-0811ec9dc3b4 com.connor.reading.controller.AssessmentsApiImpl.getAssessmentsthrew exception of type class com.connor.reading.exception.SystemException for parameters NULL, NULL
reading-comprehension-ws_1 | 2020-09-07 21:59:51,526 ERROR [com.con.rea.uti.ExceptionMapperImpl] (executor-thread-1) Handling error: com.connor.reading.exception.SystemException: There was an error when querying the database for all assessments. The sql ran was select * from rc.assessments
reading-comprehension-ws_1 | at com.connor.reading.dao.AssessmentDao.getAllAssessments(AssessmentDao.java:42)
reading-comprehension-ws_1 | at com.connor.reading.dao.AssessmentDao_Subclass.getAllAssessments$$superaccessor2(AssessmentDao_Subclass.zig:368)
reading-comprehension-ws_1 | at com.connor.reading.dao.AssessmentDao_Subclass$$function$$2.apply(AssessmentDao_Subclass$$function$$2.zig:29)
reading-comprehension-ws_1 | at io.quarkus.arc.impl.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:54)
reading-comprehension-ws_1 | at com.connor.reading.interceptor.DebugInterceptor.handleAroundInvoke(DebugInterceptor.java:33)
reading-comprehension-ws_1 | at com.connor.reading.interceptor.DebugInterceptor_Bean.intercept(DebugInterceptor_Bean.zig:385)
reading-comprehension-ws_1 | at io.quarkus.arc.impl.InterceptorInvocation.invoke(InterceptorInvocation.java:41)
reading-comprehension-ws_1 | at io.quarkus.arc.impl.AroundInvokeInvocationContext.perform(AroundInvokeInvocationContext.java:41)
reading-comprehension-ws_1 | at io.quarkus.arc.impl.InvocationContexts.performAroundInvoke(InvocationContexts.java:32)
reading-comprehension-ws_1 | at com.connor.reading.dao.AssessmentDao_Subclass.getAllAssessments(AssessmentDao_Subclass.zig:326)
reading-comprehension-ws_1 | at com.connor.reading.service.AssessmentService.getAssessments(AssessmentService.java:32)
reading-comprehension-ws_1 | at com.connor.reading.service.AssessmentService_Subclass.getAssessments$$superaccessor1(AssessmentService_Subclass.zig:241)
reading-comprehension-ws_1 | at com.connor.reading.service.AssessmentService_Subclass$$function$$1.apply(AssessmentService_Subclass$$function$$1.zig:41)
reading-comprehension-ws_1 | at io.quarkus.arc.impl.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:54)
reading-comprehension-ws_1 | at com.connor.reading.interceptor.DebugInterceptor.handleAroundInvoke(DebugInterceptor.java:33)
reading-comprehension-ws_1 | at com.connor.reading.interceptor.DebugInterceptor_Bean.intercept(DebugInterceptor_Bean.zig:385)
reading-comprehension-ws_1 | at io.quarkus.arc.impl.InterceptorInvocation.invoke(InterceptorInvocation.java:41)
reading-comprehension-ws_1 | at io.quarkus.arc.impl.AroundInvokeInvocationContext.perform(AroundInvokeInvocationContext.java:41)
reading-comprehension-ws_1 | at io.quarkus.arc.impl.InvocationContexts.performAroundInvoke(InvocationContexts.java:32)
reading-comprehension-ws_1 | at com.connor.reading.service.AssessmentService_Subclass.getAssessments(AssessmentService_Subclass.zig:196)
reading-comprehension-ws_1 | at com.connor.reading.controller.AssessmentsApiImpl.getAssessments(AssessmentsApiImpl.java:28)
reading-comprehension-ws_1 | at com.connor.reading.controller.AssessmentsApiImpl_Subclass.getAssessments$$superaccessor1(AssessmentsApiImpl_Subclass.zig:211)
reading-comprehension-ws_1 | at com.connor.reading.controller.AssessmentsApiImpl_Subclass$$function$$1.apply(AssessmentsApiImpl_Subclass$$function$$1.zig:41)
reading-comprehension-ws_1 | at io.quarkus.arc.impl.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:54)
reading-comprehension-ws_1 | at com.connor.reading.interceptor.DebugInterceptor.handleAroundInvoke(DebugInterceptor.java:33)
reading-comprehension-ws_1 | at com.connor.reading.interceptor.DebugInterceptor_Bean.intercept(DebugInterceptor_Bean.zig:385)
reading-comprehension-ws_1 | at io.quarkus.arc.impl.InterceptorInvocation.invoke(InterceptorInvocation.java:41)
reading-comprehension-ws_1 | at io.quarkus.arc.impl.AroundInvokeInvocationContext.perform(AroundInvokeInvocationContext.java:41)
reading-comprehension-ws_1 | at io.quarkus.arc.impl.InvocationContexts.performAroundInvoke(InvocationContexts.java:32)
reading-comprehension-ws_1 | at com.connor.reading.controller.AssessmentsApiImpl_Subclass.getAssessments(AssessmentsApiImpl_Subclass.zig:166)
reading-comprehension-ws_1 | at com.connor.reading.controller.AssessmentsApiImpl_ClientProxy.getAssessments(AssessmentsApiImpl_ClientProxy.zig:195)
reading-comprehension-ws_1 | at java.lang.reflect.Method.invoke(Method.java:566)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:167)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:130)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.ResourceMethodInvoker.internalInvokeOnTarget(ResourceMethodInvoker.java:638)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTargetAfterFilter(ResourceMethodInvoker.java:504)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.ResourceMethodInvoker.lambda$invokeOnTarget$2(ResourceMethodInvoker.java:454)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.interception.jaxrs.PreMatchContainerRequestContext.filter(PreMatchContainerRequestContext.java:364)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:456)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:417)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:391)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:68)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:488)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.SynchronousDispatcher.lambda$invoke$4(SynchronousDispatcher.java:259)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.SynchronousDispatcher.lambda$preprocess$0(SynchronousDispatcher.java:160)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.interception.jaxrs.PreMatchContainerRequestContext.filter(PreMatchContainerRequestContext.java:364)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.SynchronousDispatcher.preprocess(SynchronousDispatcher.java:163)
reading-comprehension-ws_1 | at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:245)
reading-comprehension-ws_1 | at io.quarkus.resteasy.runtime.standalone.RequestDispatcher.service(RequestDispatcher.java:73)
reading-comprehension-ws_1 | at io.quarkus.resteasy.runtime.standalone.VertxRequestHandler.dispatch(VertxRequestHandler.java:132)
reading-comprehension-ws_1 | at io.quarkus.resteasy.runtime.standalone.VertxRequestHandler.access$000(VertxRequestHandler.java:37)
reading-comprehension-ws_1 | at io.quarkus.resteasy.runtime.standalone.VertxRequestHandler$1.run(VertxRequestHandler.java:94)
reading-comprehension-ws_1 | at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
reading-comprehension-ws_1 | at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:2046)
reading-comprehension-ws_1 | at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1578)
reading-comprehension-ws_1 | at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1452)
reading-comprehension-ws_1 | at org.jboss.threads.DelegatingRunnable.run(DelegatingRunnable.java:29)
reading-comprehension-ws_1 | at org.jboss.threads.ThreadLocalResettingRunnable.run(ThreadLocalResettingRunnable.java:29)
reading-comprehension-ws_1 | at java.lang.Thread.run(Thread.java:834)
reading-comprehension-ws_1 | at org.jboss.threads.JBossThread.run(JBossThread.java:479)
reading-comprehension-ws_1 | at com.oracle.svm.core.thread.JavaThreads.threadStartRoutine(JavaThreads.java:517)
reading-comprehension-ws_1 | at com.oracle.svm.core.posix.thread.PosixJavaThreads.pthreadStartRoutine(PosixJavaThreads.java:193)
reading-comprehension-ws_1 | Caused by: com.connor.quarkus.jdbc.QuarkusDataAccessException: An error occurred
reading-comprehension-ws_1 | at com.connor.quarkus.jdbc.QuarkusJdbcTemplate.query(QuarkusJdbcTemplate.java:31)
reading-comprehension-ws_1 | at com.connor.reading.dao.AssessmentDao.getAllAssessments(AssessmentDao.java:39)
reading-comprehension-ws_1 | ... 61 more
reading-comprehension-ws_1 | Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
reading-comprehension-ws_1 |
reading-comprehension-ws_1 | The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
reading-comprehension-ws_1 | at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
reading-comprehension-ws_1 | at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
reading-comprehension-ws_1 | at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836)
reading-comprehension-ws_1 | at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456)
reading-comprehension-ws_1 | at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246)
reading-comprehension-ws_1 | at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:197)
reading-comprehension-ws_1 | at io.agroal.pool.ConnectionFactory.createConnection(ConnectionFactory.java:200)
reading-comprehension-ws_1 | at io.agroal.pool.ConnectionPool$CreateConnectionTask.call(ConnectionPool.java:419)
reading-comprehension-ws_1 | at io.agroal.pool.ConnectionPool$CreateConnectionTask.call(ConnectionPool.java:401)
reading-comprehension-ws_1 | at java.util.concurrent.FutureTask.run(FutureTask.java:264)
reading-comprehension-ws_1 | at io.agroal.pool.util.PriorityScheduledExecutor.beforeExecute(PriorityScheduledExecutor.java:65)
reading-comprehension-ws_1 | at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1126)
reading-comprehension-ws_1 | at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
reading-comprehension-ws_1 | at java.lang.Thread.run(Thread.java:834)
reading-comprehension-ws_1 | ... 2 more
reading-comprehension-ws_1 | Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure
reading-comprehension-ws_1 |
reading-comprehension-ws_1 | The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
reading-comprehension-ws_1 | at java.lang.reflect.Constructor.newInstance(Constructor.java:490)
reading-comprehension-ws_1 | at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
reading-comprehension-ws_1 | at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
reading-comprehension-ws_1 | at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
reading-comprehension-ws_1 | at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
reading-comprehension-ws_1 | at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91)
reading-comprehension-ws_1 | at com.mysql.cj.NativeSession.connect(NativeSession.java:144)
reading-comprehension-ws_1 | at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:956)
reading-comprehension-ws_1 | at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:826)
reading-comprehension-ws_1 | ... 13 more
reading-comprehension-ws_1 | Caused by: java.net.ConnectException: Connection timed out (Connection timed out)
reading-comprehension-ws_1 | at com.oracle.svm.jni.JNIJavaCallWrappers.jniInvoke_VA_LIST:Ljava_net_ConnectException_2_0002e_0003cinit_0003e_00028Ljava_lang_String_2_00029V(JNIJavaCallWrappers.java:0)
reading-comprehension-ws_1 | at java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java)
reading-comprehension-ws_1 | at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
reading-comprehension-ws_1 | at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
reading-comprehension-ws_1 | at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
reading-comprehension-ws_1 | at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:403)
reading-comprehension-ws_1 | at java.net.Socket.connect(Socket.java:609)
reading-comprehension-ws_1 | at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155)
reading-comprehension-ws_1 | at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65)
reading-comprehension-ws_1 | ... 16 more
存储库链接：https://gitlab.com/connorbutch/reading-comprehension（在分支上9-list-all-assessments）
Docker compose 文件（用于运行数据库和应用程序）的内容可以在这里找到：https://gitlab.com/connorbutch/reading-comprehension/-/blob/9-list-all-assessments/reading-comprehension-server-quarkus-impl/infrastructure/docker-compose.yml。为方便起见，请查看以下内容：
#This file is NOT ever intended for use in production. Docker-compose is a great tool for running
#database with our application for acceptance testing.
version: '3.3'
#Assign a static ip to the database so that it runs the same on gitlab ci server (as the localhost alias does not work with docker:dind as a service)
networks:
network:
ipam:
driver: default
config:
- subnet: 192.168.0.0/24
services:
db:
image: mysql:5.7
restart: always
environment:
MYSQL_DATABASE: 'rc'
MYSQL_USER: 'user'
MYSQL_PASSWORD: 'password'
MYSQL_ROOT_PASSWORD: 'password'
ports:
- '3306:3306'
expose:
- '3306'
volumes:
- my-db:/var/lib/mysql
networks:
network:
ipv4_address: 192.168.0.4
reading-comprehension-ws:
image: registry.gitlab.com/connorbutch/reading-comprehension
restart: on-failure
ports:
- 8080:8080
expose:
- 8080
volumes:
my-db:
对于不熟悉 quarkus 的人来说，它的工作原理类似于 spring，因为它会根据 application.properties 中设置的值自动连接/注入数据源。你可以在这里找到这个文件：https://gitlab.com/connorbutch/reading-comprehension/-/blob/9-list-all-assessments/reading-comprehension-server-quarkus-impl/src/main/resources/application.properties，我还在下面提供了源代码：
#Adding reflection config for generated models as well as properties file containing sql -> https://quarkus.io/guides/writing-native-applications-tips
quarkus.native.additional-build-args =-H:ReflectionConfigurationFiles=reflection-config.json, -H:ResourceConfigurationFiles=resources-config.json
#database (mysql) stuff -> https://quarkus.io/guides/datasource
quarkus.datasource.db-kind=mysql
quarkus.datasource.username=root
quarkus.datasource.password=password
quarkus.datasource.jdbc.url=jdbc:mysql://192.168.0.4:3306/rc
#the below doesn't seem to execute on startup, which makes me think it can't connect at all
#quarkus.datasource.new-connection-sql=CREATE DATABASE IF NOT EXISTS RC
要运行应用程序，请使用此文件：https://gitlab.com/connorbutch/reading-comprehension/-/blob/9-list-all-assessments/run-it.sh
关于查看什么（application.yaml、build.gradle 等）有什么想法吗？ 谢谢， 康纳 [1]：https://i.stack.imgur.com/5Hmry.jpg [2]：https://i.stack.imgur.com/9nHip.png
【问题讨论】：
标签： mysql jdbc docker-compose quarkus