如何在Spring Boot中使用HikariCP与Flyway配合使用两个数据源

Question

我将MySQL数据源设置为主bean：

@Bean
@Primary
@ConfigurationProperties("spring.datasource")
public DataSourceProperties mySQLDataSourceProperties() {
    return new DataSourceProperties();
}


@Bean
@Primary
@ConfigurationProperties("spring.datasource")
public DataSource mySQLDataSource() {
    return mySQLDataSourceProperties().initializeDataSourceBuilder().build();
}

@Bean
@ConfigurationProperties("oracle.datasource")
public DataSourceProperties oracleDataSourceProperties() {
    return new DataSourceProperties();
}

@Bean(name = "oracleDatabase")
@ConfigurationProperties("oracle.datasource")
public DataSource oracleDataSource() {
    return oracleDataSourceProperties().initializeDataSourceBuilder().build();
}

 @Bean
 public JdbcTemplate oracleJdbcTemplate(@Qualifier("oracleDatabase") DataSource oracleDb) {
     return new JdbcTemplate(oracleDb);
 }

并将以下配置放入应用程序.属性中：

spring.datasource.type=com.zaxxer.hikari.HikariDataSource

spring.datasource.hikari.minimum-idle=7
spring.datasource.hikari.pool-name=Test-1

spring.datasource.hikari.data-source-properties.prepStmtCacheSize=250
spring.datasource.hikari.data-source-properties.prepStmtCacheSqlLimit=2048
spring.datasource.hikari.data-source-properties.cachePrepStmts=true
spring.datasource.hikari.data-source-properties.useServerPrepStmts=true

令人遗憾的是,这些HikariCP配置没有被读取：

 HikariConfig - dataSourceJNDI..................none
 HikariConfig - dataSourceProperties............{password=<masked>}
 HikariConfig - driverClassName................."com.mysql.jdbc.Driver"
 HikariConfig - healthCheckProperties...........{}
 HikariConfig - healthCheckRegistry.............none
 HikariConfig - idleTimeout.....................600000
 HikariConfig - initializationFailFast..........true
 HikariConfig - initializationFailTimeout.......1
 HikariConfig - isolateInternalQueries..........false
 HikariConfig - jdbc4ConnectionTest.............false
 HikariConfig - jdbcUrl........................."jdbc:mysql://localhost:3306/testDB"
 HikariConfig - leakDetectionThreshold..........0
 HikariConfig - maxLifetime.....................1800000
 HikariConfig - maximumPoolSize.................10
 HikariConfig - metricRegistry..................none
 HikariConfig - metricsTrackerFactory...........none
 HikariConfig - minimumIdle.....................10
 HikariConfig - password........................<masked>
 HikariConfig - poolName........................"HikariPool-1"

@EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class})
@SpringBootApplication
@ComponentScan
public class SpringApplication {


@Bean
@Primary
@ConfigurationProperties(prefix = "spring.datasource.hikari")
public HikariConfig hikariConfig() {
    return new HikariConfig();
}

@Bean
public DataSource dataSource() {
    return new HikariDataSource(hikariConfig());
}

 HikariConfig - dataSourceJNDI..................none
 HikariConfig - dataSourceProperties............{password=<masked>, prepStmtCacheSqlLimit=2048, cachePrepStmts=true, useServerPrepStmts=true, prepStmtCacheSize=250}
 HikariConfig - driverClassName................."com.mysql.jdbc.Driver"
 HikariConfig - healthCheckProperties...........{}
 HikariConfig - healthCheckRegistry.............none
 HikariConfig - idleTimeout.....................600000
 HikariConfig - initializationFailFast..........true
 HikariConfig - initializationFailTimeout.......1
 HikariConfig - isolateInternalQueries..........false
 HikariConfig - jdbc4ConnectionTest.............false
 HikariConfig - jdbcUrl........................."jdbc:mysql://localhost:3306/testDB?autoReconnect=true"
 HikariConfig - leakDetectionThreshold..........0
 HikariConfig - maxLifetime.....................1800000
 HikariConfig - poolName........................"Test-1"

[WARN ] JdbcTemplate - DB: Can't create database 'test'; database exists (SQL State: HY000 - Error Code: 1007)
[WARN ] JdbcTemplate - DB: Unknown table 'testSchema.tenant' (SQL State: 42S02 - Error Code: 1051)
[WARN ] JdbcTemplate - DB: Unknown table 'testSchema.user' (SQL State: 42S02 - Error Code: 1051) 

CREATE SCHEMA IF NOT EXISTS `testSchema` DEFAULT CHARACTER SET utf8 ;

DROP TABLE IF EXISTS `testSchema`.`tenant`;

CREATE TABLE `testSchema`.`tenant` (
  `id` int NOT NULL AUTO_INCREMENT,

Answer 1

声明您自己的datasource将已经有隐式禁用Spring Boot对数据源的自动配置。换句话说，这不会有任何影响：

@EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class})

我认为问题在于您没有将特定于Hikari的配置绑定到您的MySQLDataSource。你需要做这样的事情：

@Bean
@Primary
@ConfigurationProperties("spring.datasource.hikari")
public DataSource mySQLDataSource() {
    return mySQLDataSourceProperties().initializeDataSourceBuilder().build();
}

这将意味着您的mysqldatasourceproperties配置了通用数据源配置。然后，他们创建hikaridatasource，该hikaridatasource使用特定于hikari的配置进一步配置。