在spring-boot启动期间tomcat数据源不检查有效连接？

Posted 2023-03-27

【中文标题】在spring-boot启动期间tomcat数据源不检查有效连接？

【英文标题】：tomcat datasource not checking for valid connection during spring-boot start up?

【发布时间】：2016-07-29 19:48:27

【问题描述】：

我有两个 spring-boot 应用程序。应用程序 A 正在使用使用 HikariDataSource 数据源配置的 mysql 数据库。应用程序 B 正在使用使用 tomcat 数据源配置的 SQL Server 数据库。

当我为数据库参数提供错误的用户名时，应用程序 A 无法启动并且出现以下异常错误。但是应用程序 B 启动正常，但是当我进行使用数据源的服务调用时，会抛出错误。为什么后者忽略了数据源连接检查？

注意：我有另一个 spring 应用程序（应用程序 C），它使用 tomcat 数据源连接到 SQL SERVER，如果提供了错误的凭据，则会在容器启动期间出错。虽然它不是一个 spring-boot 应用程序

这是我的应用程序 A 数据源配置

   @Bean
   public DataSource dataSource() 
            HikariDataSource dataSource = new HikariDataSource();

            dataSource.setDriverClassName(environment.getRequiredProperty("jdbc.driver"));
            dataSource.setJdbcUrl(environment.getRequiredProperty("jdbc.url"));
            dataSource.setUsername(environment.getRequiredProperty("jdbc.username"));
            dataSource.setPassword(environment.getRequiredProperty("jdbc.password"));

            return dataSource;
        

应用B数据源配置

import org.apache.tomcat.jdbc.pool.DataSource;

    @Bean
    public DataSource datasource() 
        DataSource ds = new DataSource();
        ds.setDriverClassName(hostdb_driver);
        ds.setUrl(hostdb_url);
        ds.setUsername(hostdb_user);
        ds.setPassword(pass);
        ds.setMaxActive(hostdb_maxActive);
        ds.setMaxIdle(hostdb_maxIdle);
        ds.setInitialSize(hostdb_initialSize);
        ds.setMinIdle(hostdb_minIdle);
        ds.setTestOnBorrow(hostdb_testOnBorrow);
        ds.setTestWhileIdle(hostdb_testWhileIdle);
        ds.setValidationQuery(hostdb_validationQuery);
        ds.setRemoveAbandoned(hostdb_removeAbandoned);
        ds.setRemoveAbandonedTimeout(hostdb_removeAbandonedTimeout);
        ds.setLogAbandoned(hostdb_logAbandoned);
        ds.setValidationInterval(hostdb_validationInterval);
        return ds;
    

异常信息：

dg.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_102]
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144) [idea_rt.jar:na]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean]: Factory method 'entityManagerFactory' threw exception; nested exception is com.zaxxer.hikari.pool.PoolInitializationException: Exception during pool initialization
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
    ... 23 common frames omitted
Caused by: com.zaxxer.hikari.pool.PoolInitializationException: Exception during pool initialization
    at com.zaxxer.hikari.pool.BaseHikariPool.initializeConnections(BaseHikariPool.java:544) ~[HikariCP-2.3.8.jar:na]
    at com.zaxxer.hikari.pool.BaseHikariPool.<init>(BaseHikariPool.java:171) ~[HikariCP-2.3.8.jar:na]
    at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:60) ~[HikariCP-2.3.8.jar:na]
    at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:48) ~[HikariCP-2.3.8.jar:na]
    at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:104) ~[HikariCP-2.3.8.jar:na]
    at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) ~[spring-jdbc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
    at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) ~[spring-jdbc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:338) ~[spring-jdbc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
    at org.springframework.boot.autoconfigure.jdbc.EmbeddedDatabaseConnection.isEmbedded(EmbeddedDatabaseConnection.java:139) ~[spring-boot-autoconfigure-1.3.5.RELEASE.jar:1.3.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.JpaProperties$Hibernate.getDefaultDdlAuto(JpaProperties.java:198) ~[spring-boot-autoconfigure-1.3.5.RELEASE.jar:1.3.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.JpaProperties$Hibernate.getOrDeduceDdlAuto(JpaProperties.java:186) ~[spring-boot-autoconfigure-1.3.5.RELEASE.jar:1.3.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.JpaProperties$Hibernate.getAdditionalProperties(JpaProperties.java:165) ~[spring-boot-autoconfigure-1.3.5.RELEASE.jar:1.3.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.JpaProperties$Hibernate.access$000(JpaProperties.java:126) ~[spring-boot-autoconfigure-1.3.5.RELEASE.jar:1.3.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.JpaProperties.getHibernateProperties(JpaProperties.java:123) ~[spring-boot-autoconfigure-1.3.5.RELEASE.jar:1.3.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration.getVendorProperties(HibernateJpaAutoConfiguration.java:99) ~[spring-boot-autoconfigure-1.3.5.RELEASE.jar:1.3.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.entityManagerFactory(JpaBaseConfiguration.java:115) ~[spring-boot-autoconfigure-1.3.5.RELEASE.jar:1.3.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration$$EnhancerBySpringCGLIB$$425788ff.CGLIB$entityManagerFactory$5(<generated>) ~[spring-boot-autoconfigure-1.3.5.RELEASE.jar:1.3.5.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration$$EnhancerBySpringCGLIB$$425788ff$$FastClassBySpringCGLIB$$cee5d89e.invoke(<generated>) ~[spring-boot-autoconfigure-1.3.5.RELEASE.jar:1.3.5.RELEASE]
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.2.6.RELEASE.jar:4.2.6.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356) ~[spring-context-4.2.6.RELEASE.jar:4.2.6.RELEASE]
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration$$EnhancerBySpringCGLIB$$425788ff.entityManagerFactory(<generated>) ~[spring-boot-autoconfigure-1.3.5.RELEASE.jar:1.3.5.RELEASE]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_102]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_102]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_102]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_102]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
    ... 24 common frames omitted
Caused by: java.sql.SQLException: Access denied for user 'foobar'@'localhost' (using password: YES)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:998) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3835) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3771) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:870) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1659) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1206) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2239) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2270) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2069) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:794) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:44) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_102]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_102]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_102]
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_102]
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:389) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:399) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:325) ~[mysql-connector-java-5.1.35.jar:5.1.35]
    at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:92) ~[HikariCP-2.3.8.jar:na]
    at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:98) ~[HikariCP-2.3.8.jar:na]
    at com.zaxxer.hikari.pool.BaseHikariPool.addConnection(BaseHikariPool.java:438) ~[HikariCP-2.3.8.jar:na]
    at com.zaxxer.hikari.pool.BaseHikariPool.initializeConnections(BaseHikariPool.java:542) ~[HikariCP-2.3.8.jar:na]
    ... 49 common frames omitted

【问题讨论】：

应用程序 A 发生故障，因为配置 Hibernate 的代码在其初始化期间正在调用数据库。应用程序 B 是否也在使用 Hibernate？

@AndyWilkinson：你怎么说应用程序 A 在初始化期间使用休眠。你是对的，应用程序 A 使用休眠。但错误日志没有显示任何与休眠相关的数据库初始化。

Spring Boot 的 JPA/Hibernate 自动配置正在进行 JDBC 调用，作为确定数据库默认 DDL 自动行为的一部分。

【参考方案1】：

根据DataSource超类的source code，当你用No-Args构造函数实例化DataSource时，底层连接池没有被初始化。

您必须实际调用 DataSource 上的 createPool() 方法才能对其进行初始化。我建议您将以下内容添加到您的 @Bean 注释中。

@Bean(initMethod="createPool")

【讨论】：

它如何与我在上面定义的没有“initMethod”的 HikariDataSource 数据源一起工作

HikariDataSource 不会自动初始化（请参阅github.com/brettwooldridge/HikariCP/blob/dev/src/main/java/com/…）。您的应用程序中必须有一些其他正在初始化的东西试图使用连接。如果您不相信，请在应用程序 B 中使用 HikariDataSource，也应该不会失败。