SpringBoot 中多数据源配置(通过JdbcTemplate操作数据库)
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2022-06-13 19:04:48
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在工作中碰到SpringBoot项目中去配置多个数据库,特此记录。
1、在springboot的配置文件中加入数据库的配置信息:
# 数据源1
spring.datasource.type=com.zaxxer.hikari.HikariDataSource
spring.datasource.driver-class-name:com.mysql.jdbc.Driver
spring.datasource.url:jdbc:mysql://
spring.datasource.username:******
spring.datasource.password:******
# 数据源2
spring.datasource2.type=com.zaxxer.hikari.HikariDataSource
spring.datasource2.driver-class-name:com.mysql.jdbc.Driver
spring.datasource2.url:jdbc:mysql://
spring.datasource2.username:******
spring.datasource2.password:******
# 数据源3
spring.datasource3.type=com.zaxxer.hikari.HikariDataSource
spring.datasource3.driver-class-name:com.mysql.jdbc.Driver
spring.datasource3.url:jdbc:
spring.datasource3.username:******
spring.datasource3.password:******
2、写三个类分别去获取配置文件中的数据库配置信息
@Component
@Data
public class DataBase1Properties {
@Value("${spring.datasource.url}")
private String url;
@Value("${spring.datasource.username}")
private String username;
@Value("${spring.datasource.password}")
private String password;
@Value("${spring.datasource.driver-class-name}")
private String driverClassName;
}
@Component
@Data
public class DataBase2Properties {
@Value("${spring.datasource2.url}")
private String url;
@Value("${spring.datasource2.username}")
private String username;
@Value("${spring.datasource2.password}")
private String password;
@Value("${spring.datasource2.driver-class-name}")
private String driverClassName;
}
@Data
@Component
public class DataBase3Properties {
@Value("${spring.datasource3.url}")
private String url;
@Value("${spring.datasource3.username}")
private String username;
@Value("${spring.datasource3.password}")
private String password;
@Value("${spring.datasource3.driver-class-name}")
private String driverClassName;
}
3、写配置类根据数据库信息获取数据库连接
@Configuration
public class DataSourceConfig {
@Autowired
private DataBase1Properties dataBase1Properties;
@Autowired
private DataBase2Properties dataBase2Properties;
@Autowired
private DataBase3Properties dataBase3Properties;
@Bean
@ConfigurationProperties(prefix = "spring.datasource")
@Qualifier("oneDataSource")
@Primary
DataSource dsOne() {
HikariDataSource dataSource = new HikariDataSource();
dataSource.setDriverClassName(dataBase1Properties.getDriverClassName());
dataSource.setJdbcUrl(dataBase1Properties.getUrl());
dataSource.setUsername(dataBase1Properties.getUsername());
dataSource.setPassword(dataBase1Properties.getPassword());
return dataSource;
}
@Bean
@ConfigurationProperties(prefix = "spring.datasource2")
@Qualifier("twoDataSource")
DataSource dsTwo() {
HikariDataSource dataSource = new HikariDataSource();
dataSource.setDriverClassName(dataBase2Properties.getDriverClassName());
dataSource.setJdbcUrl(dataBase2Properties.getUrl());
dataSource.setUsername(dataBase2Properties.getUsername());
dataSource.setPassword(dataBase2Properties.getPassword());
return dataSource;
}
@Bean
@ConfigurationProperties(prefix = "spring.datasource3")
@Qualifier("threeDataSource")
DataSource dsThree() {
HikariDataSource dataSource = new HikariDataSource();
dataSource.setDriverClassName(dataBase3Properties.getDriverClassName());
dataSource.setJdbcUrl(dataBase3Properties.getUrl());
dataSource.setUsername(dataBase3Properties.getUsername());
dataSource.setPassword(dataBase3Properties.getPassword());
return dataSource;
}
@Bean(name = "oneJdbcTemplate")
public JdbcTemplate primaryJdbcTemplate(
@Qualifier("oneDataSource") DataSource dataSource) {
return new JdbcTemplate(dataSource);
}
@Bean(name = "twoJdbcTemplate")
public JdbcTemplate secondaryJdbcTemplate(
@Qualifier("twoDataSource") DataSource dataSource) {
return new JdbcTemplate(dataSource);
}
@Bean(name = "threeJdbcTemplate")
public JdbcTemplate threeJdbcTemplate(
@Qualifier("threeDataSource") DataSource dataSource) {
return new JdbcTemplate(dataSource);
}
}
4、封装JdbcTemplate去操作数据库
@Repository
public class JdbcTemplateUtil {
@Autowired
@Qualifier("threeJdbcTemplate")
private JdbcTemplate threeJdbcTemplate;
public Integer insertBiCenter(String sql) {
int i = threeJdbcTemplate.update(sql);
return i;
}
}
5、测试封装好的工具类
@RunWith(SpringRunner.class)
@SpringBootTest
public class BigDataApplicationTests {
@Autowired
private JdbcTemplateUtil jdbcTemplateUtil;
// 部门邮件分析
@Test
public void contextLoads() {
String sql = "delete from bi_center.e_order_data";
Integer integer = jdbcTemplateUtil.insertBiCenter(sql);
System.out.println("integer = " + integer);
}
@Test
public void auto() {
String sql = "ALTER table bi_center.e_order_data AUTO_INCREMENT=1";
Integer integer = jdbcTemplateUtil.insertBiCenter(sql);
System.out.println("integer = " + integer);
}
}
6、自测通过,大家如果碰到其他问题欢迎评论留言~~~~
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