无法使用 Spring Boot 自动创建 MySQL 表

Question

之前我能够使用我的程序在 MySQL 中创建一个表。但现在它似乎不起作用。 有人可以向我指出这个问题。

application.properties：

#jdbc
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/motsach
jdbc.username=root
jdbc.password=123456


#hibernate
hibernate.dialect = org.hibernate.dialect.MySQL5InnoDBDialect
hibernate.hbm2ddl.auto = create
hibernate.current.session.context.class = org.springframework.orm.hibernate5.SpringSessionContext
hibernate.show_sql=true
hibernate.format_sql=true

数据库配置文件：

@Bean
public LocalSessionFactoryBean sessionFactory(DataSource dataSource) {
    LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
    sessionFactory.setDataSource(dataSource);
    sessionFactory.setPackagesToScan(new String[] { "com.project.form.model" });
    sessionFactory.setHibernateProperties(hibernateProperties());
    return sessionFactory;
}

private Properties hibernateProperties() {
    Properties properties = new Properties();
    properties.put("hibernate.dialect", environment.getRequiredProperty("hibernate.dialect"));
    properties.put("hibernate.show_sql", environment.getRequiredProperty("hibernate.show_sql"));
    properties.put("hibernate.format_sql", environment.getRequiredProperty("hibernate.format_sql"));
    properties.put("hibernate.hbm2ddl.auto", environment.getRequiredProperty("hibernate.hbm2ddl.auto"));
    properties.put("hibernate.current.session.context.class", environment.getRequiredProperty("hibernate.current.session.context.class"));        
    return properties;
}

@Bean(name ="dataSource")
public DataSource getDataSource() {
    DriverManagerDataSource dataSource = new DriverManagerDataSource();
    dataSource.setDriverClassName(environment.getRequiredProperty("jdbc.driverClassName"));
    dataSource.setUrl(environment.getRequiredProperty("jdbc.url"));
    dataSource.setUsername(environment.getRequiredProperty("jdbc.username"));
    dataSource.setPassword(environment.getRequiredProperty("jdbc.password"));
    System.out.println("## getDataSource: " + dataSource);
    return dataSource;
}

Answer 1

通过此配置，您可以在 spring boot 应用程序启动期间自动创建表。

server.contextPath=/demo-app
spring.datasource.url=jdbc:mysql://localhost:3306/testdb
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=update
spring.jpa.hibernate.naming.implicit-strategy=org.hibernate.boot.model.naming.ImplicitNamingStrategyLegacyHbmImpl
spring.jpa.hibernate.naming.physical-strategy=org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy

Answer 2

我正在使用application.yml 文件，这对我有用。

Refered link

# application.yml 
spring:
    datasource:
        driverClassName: com.mysql.jdbc.Driver
        password: abcd
        url: jdbc:mysql://${MYSQL_HOST:localhost}:3306/sonoo?autoReconnect=true&useSSL=false&createDatabaseIfNotExist=true
        username: root
    jpa:
        hibernate.ddl-auto: update
        generate-ddl: true
        show-sql: true