Spring Boot和数据库初始化工作不正常

Question

schema.sql中的脚本获取执行，但data.sql中的脚本未执行， 不确定我丢失了什么？

我使用Spring启动有两个数据源，我的数据的基础配置如下

@PropertySource({ "classpath:application.properties" }) 
@Configuration 
@EnableJpaRepositories(
    basePackages = "com.projectx.mysql", 
    entityManagerFactoryRef = "userEntityManager", 
    transactionManagerRef = "userTransactionManager" 
) 
public class DataBaseConfig { 

    @Autowired 
    Environment env; 


    @Bean 
    @Primary 
    public LocalContainerEntityManagerFactoryBean userEntityManager() { 
     LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean(); 
     em.setDataSource(primaryDataSource()); 
     em.setPackagesToScan(new String[] { "com.projectx.mysql" }); 
     HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter(); 
     em.setJpaVendorAdapter(vendorAdapter); 
     HashMap<String, Object> properties = new HashMap<String, Object>(); 
     properties.put("hibernate.hbm2ddl.auto", env.getProperty("spring.jpa.hibernate.ddl-auto_mysql")); 
     properties.put("hibernate.dialect", env.getProperty("spring.jpa.properties.hibernate.dialect_mysql")); 
     properties.put("hibernate.show_sql", env.getProperty("spring.jpa.show-sql")); 
     em.setJpaPropertyMap(properties); 

     return em; 
    } 

    @Bean 
    @ConfigurationProperties(prefix = "spring.datasource") 
    public DataSource primaryDataSource() { 
     return DataSourceBuilder.create().build(); 
    } 


    @Primary 
    @Bean 
    public PlatformTransactionManager userTransactionManager() { 
     JpaTransactionManager transactionManager = new JpaTransactionManager(); 
     transactionManager.setEntityManagerFactory(userEntityManager().getObject()); 
     return transactionManager; 
    } 
} 

和属性文件配置如下

spring.datasource.initialize=true 
spring.datasource.url=jdbc:mysql://localhost/test 
spring.datasource.username=root 
spring.datasource.password= 
spring.datasource.driverClassName=com.mysql.jdbc.Driver 
spring.jpa.show-sql: true 
spring.jpa.hibernate.ddl-auto_mysql=update 
spring.jpa.properties.hibernate.dialect_mysql=org.hibernate.dialect.MySQL5Dialect 

Answer 1

的问题是与数据源的初始化 当我们看到的内容org.springframework.boot.autoconfigure.jdbc.DataSourceInitializer类通过* .SQL files.It负责数据库的初始化后具有构造方法如下

@PostConstruct 
    public void init() { 
     if (!this.properties.isInitialize()) { 
      logger.debug("Initialization disabled (not running DDL scripts)"); 
      return; 
     } 
     if (this.applicationContext.getBeanNamesForType(DataSource.class, false, 
       false).length > 0) { 
      this.dataSource = this.applicationContext.getBean(DataSource.class); 
     } 
     if (this.dataSource == null) { 
      logger.debug("No DataSource found so not initializing"); 
      return; 
     } 
     runSchemaScripts(); 
    } 

的runSchemaScripts（）方法将初始化休眠模式的创建和更新操作之前的数据perfomed因此，如果数据库架构不产生。然后，如果你提供的SQL脚本，但我希望在创建后的架构/更新来执行操作，该类包含

@Override 
    public void onApplicationEvent(DataSourceInitializedEvent event) { 
     if (!this.properties.isInitialize()) { 
      logger.debug("Initialization disabled (not running data scripts)"); 
      return; 
     } 
     // NOTE the event can happen more than once and 
     // the event datasource is not used here 
     if (!this.initialized) { 
      runDataScripts(); 
      this.initialized = true; 
     } 
    } 

这就是所谓的这些方法将创建模式，如果休眠模式创建后/更新操作时，我们有弹簧靴默认Datasource创建机制。 但是由于我自己创建了Datasource，所以它并没有创建DataSourceInitializedEvent，所以数据启动脚本data.sql未被执行。 因此，我已经更改了我的数据源创建逻辑以创建DataSourceInitializedEvent，如下所示，并解决了我的问题。

@Autowired 
    private ConfigurableApplicationContext applicationContext; 

    @Bean 
    @Primary 
    public LocalContainerEntityManagerFactoryBean userEntityManager() { 
     LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean(); 
     em.setDataSource(primaryDataSource()); 
     em.setPackagesToScan(new String[] { "com.projectx.mysql" }); 
     HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter(); 
     em.setJpaVendorAdapter(vendorAdapter); 
     HashMap<String, Object> properties = new HashMap<String, Object>(); 
     properties.put("hibernate.hbm2ddl.auto", env.getProperty("spring.jpa.hibernate.ddl-auto_mysql")); 
     properties.put("hibernate.dialect", env.getProperty("spring.jpa.properties.hibernate.dialect_mysql")); 
     properties.put("hibernate.show_sql", env.getProperty("spring.jpa.show-sql")); 
     em.setJpaPropertyMap(properties); 

     this.applicationContext.publishEvent(new DataSourceInitializedEvent(primaryDataSource())); 

     return em; 
    } 

    @Bean 
    @ConfigurationProperties(prefix = "spring.datasource") 
    public DataSource primaryDataSource() { 
     return DataSourceBuilder.create().build(); 
    } 

新增this.applicationContext.publishEvent(new DataSourceInitializedEvent(primaryDataSource()));创建DataSourceInitializedEvent事件

Answer 2

我设法得到实例2数据源并使用this test project启动其中一个模式和数据。希望帮助，也许我错过了你的一些要求，这使得我的建议无效:(

对于裁判（猜你已经看到了这一点）：https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#howto-two-datasources