动态新增多数据源,dynamic-datasource-spring-boot-starter
dynamic-datasource-spring-boot-starter 使用指南
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动态新增多数据源。https://github.com/baomidou/dynamic-datasource-spring-boot-starter 官方文档收费,找了半天网上的说明都没写DEMO使用说明,没办法只有扒源码读,写了一个DEMO案例,供后续学习参考;
2021/10/28
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Maven 坐标
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>dynamic-datasource-spring-boot-starter</artifactId>
<version>3.4.1</version>
</dependency>
- 使用druid 连接池
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.2.8</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.4.1</version>
</dependency>
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>mssql-jdbc</artifactId>
<scope>runtime</scope>
</dependency>
- Springboot 配置文件Demo
spring:
server:
port: 8080
autoconfigure:
exclude: com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure
datasource:
type: com.alibaba.druid.pool.DruidDataSource
druid:
#druid login user config monintor
stat-view-servlet:
enabled: true
url-pattern: /druid/*
login-username: chenyun
login-password: chenyun666
reset-enable: false
#druid uri config monitor
web-stat-filter:
enabled: true
url-pattern: /*
exclusions: '*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*'
#druid spring monitor
aop-patterns: com.druid.*
filter:
#druid sql monitor
stat:
enabled: true
slow-sql-millis: 1000
log-slow-sql: true
merge-sql: true
#druid sql firewall monitor
wall:
enabled: true
dynamic:
strict: false
primary: master
datasource:
master:
url: jdbc:sqlserver://127.0.0.1:port;DatabaseName=Main
username: XXXuser
password: XXXpassword
driver-class-name: com.microsoft.sqlserver.jdbc.SQLServerDriver
druid:
# 初始化连接数大小,最小,最大
initial-size: 5
min-idle: 5
max-active: 20
# 配置获取连接等待超时的时间
max-wait: 30000
# 配置一个连接在池中最小生存的时间,单位是毫秒
min-evictable-idle-time-millis: 300000
max-evictable-idle-time-millis: 300000
# 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒
time-between-eviction-runs-millis: 60000
# 验证数据库连接的有效性
validation-query: select 1
validation-query-timeout: -1
test-while-idle: true
test-on-borrow: false
test-on-return: false
# 打开PSCache,并且指定每个连接上PSCache的大小
pool-prepared-statements: true
max-open-prepared-statements: 20
max-pool-prepared-statement-per-connection-size: 20
# 配置监控统计拦截的filters,去掉后监控界面sql无法统计,'wall'用于防火墙
filters: stat,wall,slf4j
# 通过connectProperties属性来打开mergeSql功能;慢SQL记录
connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=1000;druid.stat.logSlowSql=true
- Springboot 使用DEMO
import com.baomidou.dynamic.datasource.creator.DefaultDataSourceCreator;
import javax.sql.DataSource;
@Autowired
private DataSource dataSource;
@Autowired
private DefaultDataSourceCreator dataSourceCreator;
/**
* 通过DBName、数据集链接信息构建数据库链接对象,并且加入到多数据源中去,调用时传入DBNmae即可;
* // 切换数据库
* DynamicDataSourceContextHolder.push("abk");
* // 回到主库
* DynamicDataSourceContextHolder.poll();
* @param dbName
*/
private void addDBinfoToDataSource(String dbName) {
DataSourceProperty dataSourceProperty = new DataSourceProperty();
dataSourceProperty.setUrl("jdbc:sqlserver://127.0.0.1:port;DatabaseName="+dbName);
dataSourceProperty.setUsername("XXXXuser");
dataSourceProperty.setPassword("XXXXX");
dataSourceProperty.setDriverClassName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
DynamicRoutingDataSource ds = (DynamicRoutingDataSource) dataSource;
DataSource dataSource = dataSourceCreator.createDataSource(dataSourceProperty);
ds.addDataSource(dbName, dataSource);
}