在Spring Boot应用程序中使用JOOQ连接到多个MySQL数据库实例,可以通过以下步骤实现:
<dependencies>
<!-- JOOQ -->
<dependency>
<groupId>org.jooq</groupId>
<artifactId>jooq</artifactId>
<version>3.15.2</version>
</dependency>
<dependency>
<groupId>org.jooq</groupId>
<artifactId>jooq-meta</artifactId>
<version>3.15.2</version>
</dependency>
<dependency>
<groupId>org.jooq</groupId>
<artifactId>jooq-codegen</artifactId>
<version>3.15.2</version>
</dependency>
<!-- MySQL Connector -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.27</version>
</dependency>
</dependencies>
# 第一个MySQL数据库实例
spring.datasource.url=jdbc:mysql://localhost:3306/db1
spring.datasource.username=username1
spring.datasource.password=password1
# 第二个MySQL数据库实例
spring.datasource.db2.url=jdbc:mysql://localhost:3306/db2
spring.datasource.db2.username=username2
spring.datasource.db2.password=password2
@Configuration
public class DataSourceConfig {
@Primary
@Bean(name = "dataSource")
@ConfigurationProperties(prefix = "spring.datasource")
public DataSource dataSource() {
return DataSourceBuilder.create().build();
}
@Bean(name = "db2DataSource")
@ConfigurationProperties(prefix = "spring.datasource.db2")
public DataSource db2DataSource() {
return DataSourceBuilder.create().build();
}
}
@Configuration
public class JOOQConfig {
@Autowired
private DataSource dataSource;
@Autowired
private DataSource db2DataSource;
@Bean(name = "jooqConfiguration")
public Configuration jooqConfiguration() {
Configuration configuration = new DefaultConfiguration();
// 第一个MySQL数据库实例
DSLContext dslContext = DSL.using(dataSource, SQLDialect.MYSQL);
configuration.set(dslContext);
// 第二个MySQL数据库实例
DSLContext db2DslContext = DSL.using(db2DataSource, SQLDialect.MYSQL);
configuration.set("db2", db2DslContext);
return configuration;
}
}
@Service
public class MyService {
@Autowired
@Qualifier("jooqConfiguration")
private Configuration jooqConfiguration;
public void doSomething() {
DSLContext dslContext = DSL.using(jooqConfiguration);
// 使用第一个MySQL数据库实例
Result<Record> result1 = dslContext.select().from(TABLE1).fetch();
// 使用第二个MySQL数据库实例
DSLContext db2DslContext = DSL.using(jooqConfiguration, "db2");
Result<Record> result2 = db2DslContext.select().from(TABLE2).fetch();
// 其他操作...
}
}
通过以上步骤,你可以在Spring Boot应用程序中使用JOOQ连接到多个MySQL数据库实例,并根据需要进行数据操作。请注意,这只是一个示例,实际情况中可能需要根据具体需求进行适当调整。
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