问题描述
所以我遇到了此链接中已经声明的问题：Jhipster 5.7.2 How to Migrate to mysql from H2 keeping my modifications 正如GaëlMarzIoU在回答中所述，我确实编辑了以下文件：
- rc / main / resources / config / application-dev.yml
- application-prod.yml
- src / test / resources / config / application.yml
- DatabaseConfiguration.java
- WebConfigurer.java，SecurityConfiguration.java和navbar.component.html删除对H2控制台的引用
- 编辑pom.xml以删除对h2的依赖。
然后使用以下命令运行后端：mvn -P-webpack。我收到此错误“ com.MysqL.cj.jdbc.exceptions.CommunicationsException：通信链接失败”。
堆栈跟踪：
[INFO] Attaching agents: []
██╗ ██╗ ██╗ ████████╗ ███████╗ ██████╗ ████████╗ ████████╗ ███████╗
██║ ██║ ██║ ╚══██╔══╝ ██╔═══██╗ ██╔════╝ ╚══██╔══╝ ██╔═════╝ ██╔═══██╗
██║ ████████║ ██║ ███████╔╝ ╚█████╗ ██║ ██████╗ ███████╔╝
██╗ ██║ ██╔═══██║ ██║ ██╔════╝ ╚═══██╗ ██║ ██╔═══╝ ██╔══██║
╚██████╔╝ ██║ ██║ ████████╗ ██║ ██████╔╝ ██║ ████████╗ ██║ ╚██╗
╚═════╝ ╚═╝ ╚═╝ ╚═══════╝ ╚═╝ ╚═════╝ ╚═╝ ╚═══════╝ ╚═╝ ╚═╝
:: JHipster ? :: Running Spring Boot 2.2.4.RELEASE ::
:: https://www.jhipster.tech ::
2020-09-01 00:50:49.224 INFO 17272 --- [ restartedMain] smoothalgo.ZakatReminderApp : Starting ZakatReminderApp on Nizz with PID 17272 (C:\Users\ACER\Desktop\PFE\another-chance\target\classes started by ACER in C:\Users\ACER\Desktop\PFE\another-chance)
2020-09-01 00:50:49.235 DEBUG 17272 --- [ restartedMain] smoothalgo.ZakatReminderApp : Running with Spring Boot v2.2.4.RELEASE,Spring v5.2.3.RELEASE
2020-09-01 00:50:49.241 INFO 17272 --- [ restartedMain] smoothalgo.ZakatReminderApp : The following profiles are active: dev
2020-09-01 00:50:54.348 DEBUG 17272 --- [ restartedMain] i.m.c.u.i.logging.InternalLoggerFactory : Using SLF4J as the default logging framework
2020-09-01 00:50:55.075 DEBUG 17272 --- [ restartedMain] smoothalgo.config.WebConfigurer : Registering CORS filter
2020-09-01 00:50:55.153 INFO 17272 --- [ restartedMain] smoothalgo.config.WebConfigurer : Web application configuration,using profiles: dev
2020-09-01 00:50:55.155 INFO 17272 --- [ restartedMain] smoothalgo.config.WebConfigurer : Web application fully configured
2020-09-01 00:50:55.548 DEBUG 17272 --- [ restartedMain] c.ehcache.core.Ehcache-usersByLogin : Initialize successful.
2020-09-01 00:50:55.578 DEBUG 17272 --- [ restartedMain] c.ehcache.core.Ehcache-usersByEmail : Initialize successful.
2020-09-01 00:50:55.583 DEBUG 17272 --- [ restartedMain] c.e.core.Ehcache-smoothalgo.domain.User : Initialize successful.
2020-09-01 00:50:55.588 DEBUG 17272 --- [ restartedMain] c.e.c.E.domain.Authority : Initialize successful.
2020-09-01 00:50:55.593 DEBUG 17272 --- [ restartedMain] c.e.c.E.domain.User.authorities : Initialize successful.
2020-09-01 00:50:55.597 DEBUG 17272 --- [ restartedMain] c.e.c.E.domain.BankAccount : Initialize successful.
2020-09-01 00:50:55.617 DEBUG 17272 --- [ restartedMain] c.e.c.E.domain.BankAccount.balances : Initialize successful.
2020-09-01 00:50:55.622 DEBUG 17272 --- [ restartedMain] c.e.c.Ehcache-smoothalgo.domain.Balance : Initialize successful.
2020-09-01 00:50:55.628 DEBUG 17272 --- [ restartedMain] c.e.c.Ehcache-smoothalgo.domain.Period : Initialize successful.
2020-09-01 00:50:55.633 DEBUG 17272 --- [ restartedMain] c.e.c.E.domain.Period.balances : Initialize successful.
2020-09-01 00:50:55.638 DEBUG 17272 --- [ restartedMain] c.e.c.Ehcache-smoothalgo.domain.Zakat : Initialize successful.
2020-09-01 00:50:55.642 DEBUG 17272 --- [ restartedMain] c.e.c.E.domain.Zakat.payments : Initialize successful.
2020-09-01 00:50:55.647 DEBUG 17272 --- [ restartedMain] c.e.c.Ehcache-smoothalgo.domain.Payment : Initialize successful.
2020-09-01 00:50:55.651 DEBUG 17272 --- [ restartedMain] c.e.c.E.domain.Beneficiary : Initialize successful.
2020-09-01 00:50:55.657 DEBUG 17272 --- [ restartedMain] c.e.c.E.domain.Beneficiary.payments : Initialize successful.
2020-09-01 00:50:55.660 DEBUG 17272 --- [ restartedMain] c.e.c.E.domain.ExtraUser : Initialize successful.
2020-09-01 00:50:55.664 DEBUG 17272 --- [ restartedMain] c.e.c.E.domain.ExtraUser.beneficiarys : Initialize successful.
2020-09-01 00:50:55.668 DEBUG 17272 --- [ restartedMain] c.e.c.E.domain.ExtraUser.zakats : Initialize successful.
2020-09-01 00:50:55.674 DEBUG 17272 --- [ restartedMain] c.e.c.E.domain.ExtraUser.periods : Initialize successful.
2020-09-01 00:50:55.705 DEBUG 17272 --- [ restartedMain] smoothalgo.config.AsyncConfiguration : Creating Async Task Executor
2020-09-01 00:50:55.739 DEBUG 17272 --- [ restartedMain] s.config.LiquibaseConfiguration : Configuring Liquibase
2020-09-01 00:50:58.875 ERROR 17272 --- [ restartedMain] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Exception during pool initialization.
com.MysqL.cj.jdbc.exceptions.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at com.MysqL.cj.jdbc.exceptions.sqlError.createCommunicationsException(sqlError.java:174)
at com.MysqL.cj.jdbc.exceptions.sqlExceptionsMapping.translateException(sqlExceptionsMapping.java:64)
at com.MysqL.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836)
at com.MysqL.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456)
at com.MysqL.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246)
at com.MysqL.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:197)
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138)
at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354)
at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202)
at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473)
at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:554)
at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115)
at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112)
at io.github.jhipster.config.liquibase.AsyncSpringLiquibase.afterPropertiesSet(AsyncSpringLiquibase.java:89)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.invokeInitMethods(AbstractAutowireCapablebeanfactory.java:1855)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.initializeBean(AbstractAutowireCapablebeanfactory.java:1792)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.doCreateBean(AbstractAutowireCapablebeanfactory.java:595)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.createBean(AbstractAutowireCapablebeanfactory.java:517)
at org.springframework.beans.factory.support.Abstractbeanfactory.lambda$doGetBean$0(Abstractbeanfactory.java:323)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.Abstractbeanfactory.doGetBean(Abstractbeanfactory.java:321)
at org.springframework.beans.factory.support.Abstractbeanfactory.getBean(Abstractbeanfactory.java:202)
at org.springframework.beans.factory.support.Abstractbeanfactory.doGetBean(Abstractbeanfactory.java:310)
at org.springframework.beans.factory.support.Abstractbeanfactory.getBean(Abstractbeanfactory.java:202)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1108)
at org.springframework.context.support.AbstractApplicationContext.finishbeanfactoryInitialization(AbstractApplicationContext.java:868)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
at smoothalgo.ZakatReminderApp.main(ZakatReminderApp.java:63)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: com.MysqL.cj.exceptions.CJCommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.MysqL.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
at com.MysqL.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
at com.MysqL.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
at com.MysqL.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
at com.MysqL.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91)
at com.MysqL.cj.NativeSession.connect(NativeSession.java:144)
at com.MysqL.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:956)
at com.MysqL.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:826)
... 34 common frames omitted
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.socksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.socket.connect(Socket.java:589)
at com.MysqL.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155)
at com.MysqL.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65)
... 37 common frames omitted
2020-09-01 00:50:58.881 ERROR 17272 --- [ restartedMain] i.g.j.c.liquibase.AsyncSpringLiquibase : Liquibase Could not start correctly,your database is NOT ready: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
com.MysqL.cj.jdbc.exceptions.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at com.MysqL.cj.jdbc.exceptions.sqlError.createCommunicationsException(sqlError.java:174)
at com.MysqL.cj.jdbc.exceptions.sqlExceptionsMapping.translateException(sqlExceptionsMapping.java:64)
at com.MysqL.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836)
at com.MysqL.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456)
at com.MysqL.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246)
at com.MysqL.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:197)
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138)
at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354)
at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202)
at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473)
at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:554)
at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115)
at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112)
at io.github.jhipster.config.liquibase.AsyncSpringLiquibase.afterPropertiesSet(AsyncSpringLiquibase.java:89)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.invokeInitMethods(AbstractAutowireCapablebeanfactory.java:1855)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.initializeBean(AbstractAutowireCapablebeanfactory.java:1792)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.doCreateBean(AbstractAutowireCapablebeanfactory.java:595)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.createBean(AbstractAutowireCapablebeanfactory.java:517)
at org.springframework.beans.factory.support.Abstractbeanfactory.lambda$doGetBean$0(Abstractbeanfactory.java:323)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.Abstractbeanfactory.doGetBean(Abstractbeanfactory.java:321)
at org.springframework.beans.factory.support.Abstractbeanfactory.getBean(Abstractbeanfactory.java:202)
at org.springframework.beans.factory.support.Abstractbeanfactory.doGetBean(Abstractbeanfactory.java:310)
at org.springframework.beans.factory.support.Abstractbeanfactory.getBean(Abstractbeanfactory.java:202)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1108)
at org.springframework.context.support.AbstractApplicationContext.finishbeanfactoryInitialization(AbstractApplicationContext.java:868)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
at smoothalgo.ZakatReminderApp.main(ZakatReminderApp.java:63)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: com.MysqL.cj.exceptions.CJCommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.MysqL.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
at com.MysqL.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
at com.MysqL.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
at com.MysqL.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
at com.MysqL.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91)
at com.MysqL.cj.NativeSession.connect(NativeSession.java:144)
at com.MysqL.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:956)
at com.MysqL.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:826)
... 34 common frames omitted
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.socksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.socket.connect(Socket.java:589)
at com.MysqL.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155)
at com.MysqL.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65)
... 37 common frames omitted
2020-09-01 00:51:02.583 ERROR 17272 --- [ restartedMain] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Exception during pool initialization.
com.MysqL.cj.jdbc.exceptions.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at com.MysqL.cj.jdbc.exceptions.sqlError.createCommunicationsException(sqlError.java:174)
at com.MysqL.cj.jdbc.exceptions.sqlExceptionsMapping.translateException(sqlExceptionsMapping.java:64)
at com.MysqL.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836)
at com.MysqL.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456)
at com.MysqL.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246)
at com.MysqL.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:197)
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138)
at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354)
at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202)
at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473)
at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:554)
at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115)
at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112)
at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentinitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentinitiator.java:180)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentinitiator.initiateService(JdbcEnvironmentinitiator.java:68)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentinitiator.initiateService(JdbcEnvironmentinitiator.java:35)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:175)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:118)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.Metadata(EntityManagerFactoryBuilderImpl.java:1202)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1233)
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58)
at org.springframework.orm.jpa.LocalContainerEntityManagerfactorybean.createNativeEntityManagerFactory(LocalContainerEntityManagerfactorybean.java:365)
at org.springframework.orm.jpa.AbstractEntityManagerfactorybean.buildNativeEntityManagerFactory(AbstractEntityManagerfactorybean.java:391)
at org.springframework.orm.jpa.AbstractEntityManagerfactorybean.afterPropertiesSet(AbstractEntityManagerfactorybean.java:378)
at org.springframework.orm.jpa.LocalContainerEntityManagerfactorybean.afterPropertiesSet(LocalContainerEntityManagerfactorybean.java:341)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.invokeInitMethods(AbstractAutowireCapablebeanfactory.java:1855)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.initializeBean(AbstractAutowireCapablebeanfactory.java:1792)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.doCreateBean(AbstractAutowireCapablebeanfactory.java:595)
at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.createBean(AbstractAutowireCapablebeanfactory.java:517)
at org.springframework.beans.factory.support.Abstractbeanfactory.lambda$doGetBean$0(Abstractbeanfactory.java:323)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.Abstractbeanfactory.doGetBean(Abstractbeanfactory.java:321)
at org.springframework.beans.factory.support.Abstractbeanfactory.getBean(Abstractbeanfactory.java:202)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1108)
at org.springframework.context.support.AbstractApplicationContext.finishbeanfactoryInitialization(AbstractApplicationContext.java:868)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
at smoothalgo.ZakatReminderApp.main(ZakatReminderApp.java:63)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: com.MysqL.cj.exceptions.CJCommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.MysqL.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
at com.MysqL.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
at com.MysqL.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
at com.MysqL.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
at com.MysqL.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91)
at com.MysqL.cj.NativeSession.connect(NativeSession.java:144)
at com.MysqL.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:956)
at com.MysqL.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:826)
... 52 common frames omitted
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.socksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.socket.connect(Socket.java:589)
at com.MysqL.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:155)
at com.MysqL.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65)
... 55 common frames omitted
2020-09-01 00:51:02.591 WARN 17272 --- [ restartedMain] o.h.e.j.e.i.JdbcEnvironmentinitiator : HHH000342: Could not obtain connection to query Metadata : Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
2020-09-01 00:51:04.826 DEBUG 17272 --- [ restartedMain] smoothalgo.security.jwt.TokenProvider : Using a Base64-encoded JWT secret key
2020-09-01 00:51:11.723 INFO 17272 --- [ restartedMain] smoothalgo.ZakatReminderApp : Started ZakatReminderApp in 23.851 seconds (JVM running for 25.408)
2020-09-01 00:51:11.736 INFO 17272 --- [ restartedMain] smoothalgo.ZakatReminderApp :
----------------------------------------------------------
Application 'zakat_reminder' is running! Access URLs:
Local: http://localhost:8080/
External: http://192.168.42.204:8080/
Profile(s): [dev]
----------------------------------------------------------
这是我的github项目链接：https://github.com/nizarbg96/ZakatProject.git
解决方法
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