我已经开始使用 docker 并且正在创建一些基本示例.当我使用 docker-copmose.yml 文件时，我遇到了 spring boot 和 mysql 连接之间的问题.
I have started with docker and I am creating some basic examples. I am facing problem between spring boot and mysql connection when I am using docker-copmose.yml file.
奇怪的是它在 jdbc:mysql 给出错误.它正在考虑作为主机的数据库连接的第二个参数.我不知道为什么?
当我分别手动启动 mysql 和 springboot 容器时，同样的连接配置也有效.我只有在使用 docker-compose 时才会遇到这个问题
This same connection confg works when I manually start mysql and springboot container individually. I am facing this problem only when I use docker-compose
application.properties
application.properties
spring.datasource.username=root
spring.datasource.password=mypass
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL8Dialect
spring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=true
spring.datasource.url=jdbc:mysql://mysql-db:3306/docker_test
Dockerfile
FROM openjdk:8u212-jre-alpine
ADD target/docker-demo-1.0.jar docker-demo-1.0.jar
EXPOSE 8080
ENTRYPOINT ["java","-jar","docker-demo-1.0.jar"]
docker-compose.yml
docker-compose.yml
version: '3'
services:
mysql-db:
image: mysql
container_name: mysqldbhost
restart: always
environment:
MYSQL_DATABASE: docker_test
MYSQL_ROOT_PASSWORD: mypass
ports:
- 3306:3306
web-app:
build:
context: .
dockerfile: Dockerfile
image:
kshitij23/docker-demo:1.3
ports:
- "8080:8080"
depends_on:
- mysql-db
使用docker-compose up"时出错
Error when I use "docker-compose up"
web-app_1 | Caused by: org.hibernate.exception.JDBCConnectionException: Unable to open JDBC Connection for DDL execution
web-app_1 | at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:112) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:69) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcConnection(ImprovedExtractionContextImpl.java:60) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcDatabaseMetaData(ImprovedExtractionContextImpl.java:67) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.getTables(InformationExtractorJdbcDatabaseMetaDataImpl.java:333) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.tool.schema.extract.internal.DatabaseInformationImpl.getTablesInformation(DatabaseInformationImpl.java:120) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.tool.schema.internal.GroupedSchemaMigratorImpl.performTablesMigration(GroupedSchemaMigratorImpl.java:65) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.performMigration(AbstractSchemaMigrator.java:207) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration(AbstractSchemaMigrator.java:114) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:184) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:73) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:314) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:468) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1237) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.2.5.RELEASE.jar!/:5.2.5.RELEASE]
web-app_1 | at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.2.5.RELEASE.jar!/:5.2.5.RELEASE]
web-app_1 | at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:391)
~[spring-orm-5.2.5.RELEASE.jar!/:5.2.5.RELEASE]
web-app_1 | ... 28 common frames omitted
web-app_1 | Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
web-app_1 |
web-app_1 | The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
web-app_1 | at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:197) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-3.4.2.jar!/:na]
web-app_1 | at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) ~[HikariCP-3.4.2.jar!/:na]
web-app_1 | at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) ~[HikariCP-3.4.2.jar!/:na]
web-app_1 | at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) ~[HikariCP-3.4.2.jar!/:na]
web-app_1 | at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:554) ~[HikariCP-3.4.2.jar!/:na]
web-app_1 | at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-3.4.2.jar!/:na]
web-app_1 | at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-3.4.2.jar!/:na]
web-app_1 | at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:180) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:43) ~[hibernate-core-5.4.12.Final.jar!/:5.4.12.Final]
web-app_1 | ... 43 common frames omitted
web-app_1 | Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure
web-app_1 |
web-app_1 | The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
web-app_1 | at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_212]
web-app_1 | at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_212]
web-app_1 | at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_212]
web-app_1 | at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_212]
web-app_1 | at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.mysql.cj.NativeSession.connect(NativeSession.java:144) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:956) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:826) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | ... 56 common frames omitted
web-app_1 | Caused by: java.net.UnknownHostException: mysql
web-app_1 | at java.net.InetAddress.getAllByName0(InetAddress.java:1281) ~[na:1.8.0_212]
web-app_1 | at java.net.InetAddress.getAllByName(InetAddress.java:1193) ~[na:1.8.0_212]
web-app_1 | at java.net.InetAddress.getAllByName(InetAddress.java:1127) ~[na:1.8.0_212]
web-app_1 | at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:132) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ~[mysql-connector-java-8.0.19.jar!/:8.0.19]
web-app_1 | ... 59 common frames omitted
web-app 应用程序正在尝试连接到尚不可用的 mysql-db(数据库仍在加载)您可以根据自己的喜好使用以下任何一种解决方案.
web-app application is trying to connect to mysql-db which is not yet available(database is still loading) you can use any of the following solutions depending on your preference.
重启失败
Restart-on failure
修改docker-compose文件为
web-app:
image:
kshitij23/docker-demo:1.3
restart:on-failure
睡觉
sleep
修改环境下的docker-compose文件
web-app:
image:
kshitij23/docker-demo:1.3
environment:
-SLEEP_LENGTH=5
wait-for-it.sh 文件
wait-for-it.sh file
wait-for-it.sh
这种方法需要你修改你的 Dockerfile 以及 docker-compose文件
this approach needs you to modify your Dockerfile as well as docker-compose file
这篇关于Docker 中的 Mysql 连接错误与 Spriing 启动的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！