Spring Boot 2 忽略了 application.yml 中设置的 HikariCP 属性

Question

我有一个 spring boot 2 应用程序连接到 Mariadb 数据库。此应用程序在 Cloud Foundry 中运行。它从 VCAP_* 环境变量中获取数据库连接属性。

应用程序运行正常，可以连接到数据库。但是，我发现应用程序没有使用 application.yml.

中指定的 hikari 配置

你能指出这里有什么问题吗？

build.gradle

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-actuator'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.springframework.boot:spring-boot-starter-jdbc'

    compile group: 'org.mariadb.jdbc', name: 'mariadb-java-client', version: '2.6.2'

    compile group: 'org.springframework.cloud', name: 'spring-cloud-cloudfoundry-connector', version: '2.0.7.RELEASE'
    compile group: 'org.springframework.cloud', name: 'spring-cloud-spring-service-connector', version: '2.0.7.RELEASE'

    testImplementation 'org.springframework.boot:spring-boot-starter-test'
    testImplementation 'com.h2database:h2:1.4.200'
}

application.yml

   datasource:
    hikari:
      pool-name: mypool
      auto-commit: true
      connection-timeout: 5000
      minimum-idle: 8
      maximum-pool-size: 8
      idle-timeout: 600000
      max-lifetime: 3600000

CloudConfig.java

@Configuration
public class CloudConfig {

  @Bean
  public CloudFactory cloudFactory() {
    return new CloudFactory();
  }

  private DataSource createDataSource(CloudFactory cloudFactory, String serviceId) {
    return cloudFactory.getCloud().getServiceConnector(serviceId, DataSource.class, null);
  }

  @Primary
  @Bean(name = "myDataSource")
  public DataSource becscmDataSource(CloudFactory cloudFactory) {
    return createDataSource(cloudFactory, "my-maria-rds");
  }
}

Answer 1

您正在使用 Spring 云连接器库创建数据库连接。

compile group: 'org.springframework.cloud', name: 'spring-cloud-cloudfoundry-connector', version: '2.0.7.RELEASE'
compile group: 'org.springframework.cloud', name: 'spring-cloud-spring-service-connector', version: '2.0.7.RELEASE'

这个图书馆在 maintenance mode, and its use is discouraged. One of the reasons for discouraging its use is that it does not work well with Spring Boot configuration. When Connectors APIs like cloudFactory.getCloud().getServiceConnector() are used to create the service connection bean, Spring Boot auto-configuration backs off and properties like spring.datasource.* are ignored. If there is a reason why you must continue to use Connectors, then you will need to use the Connectors API to configuring pooling options as shown in the documentation.

更好的选择是删除对连接器的依赖并改用 Java CFEnv。

Answer 2

在听从 Scott 的建议后。我能够使它按如下方式工作。

build.yml

implementation 'io.pivotal.cfenv:java-cfenv-boot:2.3.0'

application.yml保持不变

CloudConfig.java

@Configuration
public class CloudConfig {

  @Primary
  @Bean(name = "myDataSource")
  @ConfigurationProperties("spring.datasource.hikari") // added this
  public DataSource becscmDataSource() {
    CfJdbcEnv cfJdbcEnv = new CfJdbcEnv();
    CfJdbcService myJdbc = cfJdbcEnv.findJdbcServiceByName("my-maria-rds");

    DataSourceBuilder builder = DataSourceBuilder.create();
    builder.url(myJdbc.getJdbcUrl());
    builder.username(myJdbc.getUsername());
    builder.password(myJdbc.getPassword());
    builder.driverClassName("org.mariadb.jdbc.Driver");
    return builder.build();
  }
}

Spring Boot 2 忽略了 application.yml 中设置的 HikariCP 属性

Spring Boot 2 is ignoring HikariCP properties set in application.yml

java

cloud-foundry

spring-boot

hikaricp