java - Spring boot - MySQL 设置不起作用

Question

我正在尝试使用 Spring boot 和 MySQL 开发应用程序。正如文档所说，首先我使用 Intelij Idea 使用 Spring initializr 创建了项目，配置了 application.properties 文件，并编写了 schema-mysql.sql 文件和 data-mysql.sql 文件。运行项目后，发现mysql数据库中没有表，也没有数据。我的配置有什么问题？请帮忙。

application.properties file,

spring.datasource.url=jdbc:mysql://localhost:3306/testdb?useSSL=false
spring.datasource.username=root
spring.datasource.password=password

spring.datasource.testWhileIdle=true
spring.datasource.validationQuery=SELECT 1

spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.show-sql = true
spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect

spring.datasource.schema=schema-mysql.sql
spring.datasource.data=data-mysql.sql

dependencies in pom.xml file,

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

schema-mysql.sql file,

CREATE TABLE IF NOT EXISTS `SOL16_USERS` (
  `USERNAME` VARCHAR(200) NOT NULL,
  'PASSWORD' VARCHAR(200) NOT NULL,
  PRIMARY KEY (`USERNAME`)
);

CREATE TABLE IF NOT EXISTS 'SOL16_PRIVILEGES' (
  'PRIVILEGE_ID' INT(2)      NOT NULL,
  'PRIVILEGE'    VARCHAR(15) NOT NULL,
  PRIMARY KEY ('PRIVILEGE_ID')
);

CREATE TABLE IF NOT EXISTS 'SOL16_USER_PRIVILEGES' (
  'USERNAME'     VARCHAR(200) NOT NULL,
  'PRIVILEGE_ID' VARCHAR(2)   NOT NULL,
  PRIMARY KEY ('USERNAME')
);

And the file/directory structure is,

src
|----main
|    |----java
|    |----resources
|    |    |----static
|    |    |----templates
|    |    |----application.properties
|    |    |----data-mysql.sql
|    |    |----schema-mysql.sql

Answer 1

作为Spring引导documentation提到，解决我的问题的是将 spring.datasource.platform 添加到 application.properties。这就是我使用 schema-{platform}.sql 和 data-{platform}.sql 初始化模式所缺少的。

{platform} = value of spring.datasource.platform

所以我最终的 application.properties 文件是，

spring.datasource.url = jdbc:mysql://localhost:3306/testdb?useSSL=false
spring.datasource.username = root
spring.datasource.password = password

spring.datasource.testWhileIdle = true
spring.datasource.validationQuery = SELECT 1

spring.datasource.driverClassName = com.mysql.jdbc.Driver
spring.jpa.hibernate.ddl-auto = validate
spring.jpa.show-sql = true
spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect

spring.datasource.platform=mysql
spring.datasource.schema=schema-mysql.sql
spring.datasource.data=data-mysql.sql
spring.datasource.initialize=true
spring.datasource.continue-on-error=true