SpringBoot整合ShardingSphere的示例代码

概要: ShardingSphere是一套开源的分布式数据库中间件解决方案组成的生态圈,它由Sharding-JDBC、Sharding-Proxy和Sharding-Sidecar(计划中)这3款相互独立的产品组成。 他们均提供标准化的数据分片、分布式事务和数据库治理功能,可适用于如Java同构、异构语言、云原生等各种多样化的应用场景。

官网地址:https://shardingsphere.apache.org/

 

一、相关依赖

<dependency>
 <groupId>io.shardingsphere</groupId>
  <artifactId>sharding-core</artifactId>
  <version>3.1.0</version>
</dependency>
<dependency>
  <groupId>io.shardingsphere</groupId>
  <artifactId>sharding-jdbc-spring-namespace</artifactId>
  <version>3.1.0</version>
</dependency>

 

二、Nacos数据源配置

sharding:
dataSource:
  db0:
    driverClassName: com.mysql.cj.jdbc.Driver
    url: mysql://127.0.0.1:3306/demo0
    username: root
    password: 123456
  db1:
    driverClassName: com.mysql.cj.jdbc.Driver
    url: mysql://127.0.0.1:3306/demo1
    username: root
    password: 123456

 

三、项目配置

bootstrap-dev.properties
spring:
application:
  name: demo
cloud:
  nacos:
    server-addr: 127.0.0.1:8848
    config:
      namespace: 9c6b8156-d045-463d-8fe6-4658ce78d0cc
      file-extension: yml

SqlSessionConfig

package com.example.demo.config;

import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;

import org.apache.ibatis.plugin.Interceptor;
import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;

import javax.sql.DataSource;

@Configuration
public class SqlSessionConfig {

  private Logger logger = LoggerFactory.getLogger(SqlSessionConfig.class);
  
  @Bean("mySqlSessionFactoryBean")
  public MybatisSqlSessionFactoryBean createSqlSessionFactory(@Qualifier("datasource") DataSource dataSource,
                                                              @Qualifier("paginationInterceptor") PaginationInterceptor paginationInterceptor) {

      // MybatisSqlSessionFactory
      MybatisSqlSessionFactoryBean sqlSessionFactoryBean = null;
      try {
          // 实例SessionFactory
          sqlSessionFactoryBean = new MybatisSqlSessionFactoryBean();
          // 配置数据源
          sqlSessionFactoryBean.setDataSource(dataSource);
          // 设置 MyBatis-Plus 分页插件
          Interceptor [] plugins = {paginationInterceptor};
          sqlSessionFactoryBean.setPlugins(plugins);
          // 加载MyBatis配置文件
          PathMatchingResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver();
          sqlSessionFactoryBean.setMapperLocations(resourcePatternResolver.getResources("classpath*:mapper/*.xml"));
      } catch (Exception e) {
          logger.error("创建SqlSession连接工厂错误:{}", e.getMessage());
      }
      return sqlSessionFactoryBean;
  }

  @Bean
  public MapperScannerConfigurer myGetMapperScannerConfigurer() {
      MapperScannerConfigurer myMapperScannerConfigurer = new MapperScannerConfigurer();
      myMapperScannerConfigurer.setBasePackage("com.example.demo.mapper");
      myMapperScannerConfigurer.setSqlSessionFactoryBeanName("mySqlSessionFactoryBean");
      return myMapperScannerConfigurer;
  }
}

DataSourceConfig

package com.example.demo.config;

import com.alibaba.druid.pool.DruidDataSource;
import io.shardingsphere.api.config.rule.ShardingRuleConfiguration;
import io.shardingsphere.shardingjdbc.api.ShardingDataSourceFactory;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

@Configuration
@ConfigurationProperties(prefix = "sharding")
public class DataSourceConfig  {

  private Map<String, DruidDataSource> dataSource;

  public Map<String, DruidDataSource> getDataSource() {
      return dataSource;
  }

  public void setDataSource(Map<String, DruidDataSource> dataSource) {
      this.dataSource = dataSource;
  }

  @Bean("datasource")
  public DataSource getDataSource(@Qualifier("shardingConfig") ShardingRuleConfiguration shardingRuleConfig,
                                  @Qualifier("properties") Properties properties) throws SQLException {

      Map<String, DataSource> dataSourceMap = new HashMap<>();
      dataSource.forEach(dataSourceMap::put);
      return ShardingDataSourceFactory.createDataSource(dataSourceMap, shardingRuleConfig, new HashMap<>(), properties);
  }


  @Bean("properties")
  public Properties getProperties(){
      // 获取数据源对象
      Properties props=new Properties();
      /*
       * ==== Properties取值范围 ====
       *
       * SQL_SHOW("sql.show", String.valueOf(Boolean.FALSE), Boolean.TYPE),
       * ACCEPTOR_SIZE("acceptor.size", String.valueOf(Runtime.getRuntime().availableProcessors() * 2), Integer.TYPE),
       * EXECUTOR_SIZE("executor.size", String.valueOf(0), Integer.TYPE),
       * MAX_CONNECTIONS_SIZE_PER_QUERY("max.connections.size.per.query", String.valueOf(1), Integer.TYPE),
       * PROXY_FRONTEND_FLUSH_THRESHOLD("proxy.frontend.flush.threshold", String.valueOf(128), Integer.TYPE),
       * PROXY_TRANSACTION_TYPE("proxy.transaction.type", "LOCAL", String.class),
       * PROXY_OPENTRACING_ENABLED("proxy.opentracing.enabled", String.valueOf(Boolean.FALSE), Boolean.TYPE),
       * PROXY_BACKEND_USE_NIO("proxy.backend.use.nio", String.valueOf(Boolean.FALSE), Boolean.TYPE),
       * PROXY_BACKEND_MAX_CONNECTIONS("proxy.backend.max.connections", String.valueOf(8), Integer.TYPE),
       * PROXY_BACKEND_CONNECTION_TIMEOUT_SECONDS("proxy.backend.connection.timeout.seconds", String.valueOf(60), Integer.TYPE),
       * CHECK_TABLE_METADATA_ENABLED("check.table.metadata.enabled", String.valueOf(Boolean.FALSE), Boolean.TYPE);
       */
      props.put("sql.show", "true");
      return props;
  }
}

ShardingRuleConfig

package com.example.demo.config;

import io.shardingsphere.api.config.rule.ShardingRuleConfiguration;
import io.shardingsphere.core.yaml.sharding.YamlShardingConfiguration;
import io.shardingsphere.core.yaml.sharding.YamlShardingRuleConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.beans.factory.annotation.Value;

import java.io.File;

@Configuration
public class ShardingRuleConfig implements ApplicationContextAware  {

/* 获取环境变量 */
@Value("${spring.profiles.active}")
  private String profile;

  @Bean("shardingConfig")
  public ShardingRuleConfiguration getShardingRuleConfig() throws Exception {

// 获取yml路由规则配置文件
      File yamlFile = new File("src/main/resources/sharding/" + profile + "/sharding.yml");
      YamlShardingConfiguration yamlShardingRuleConfiguration = YamlShardingConfiguration.unmarshal(yamlFile);
      YamlShardingRuleConfiguration shardingRule = yamlShardingRuleConfiguration.getShardingRule();
      if (null == shardingRule) {
          throw new Exception("YamlShardingRuleConfiguration is Null!");
      }
      return shardingRule.getShardingRuleConfiguration();
      
  }
}

src/main/resources/dev/sharding.yml

shardingRule:
tables:
  user:
    actualDataNodes: db${0..1}.user${0..1}
    databaseStrategy:
      inline:
        shardingColumn: id
        algorithmExpression: db${id % 2}
    tableStrategy:
      inline:
        shardingColumn: id
        algorithmExpression: user${id % 2}

注:修复相同路由字段导致部分分表无法落地数据,可以自定义相应规则,例如修改为以下配置:

shardingRule:
tables:
  user:
    actualDataNodes: db${0..1}.user${0..1}
    databaseStrategy:
      inline:
        shardingColumn: id
        algorithmExpression: db${Math.round(id / 2) % 2}
    tableStrategy:
      inline:
        shardingColumn: id
        algorithmExpression: user${id % 2}

 

四、验证

2020-05-11 09:51:09.239  INFO 6352 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$dd8e22ae] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)

.   ____          _            __ _ _
/\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/  ___)| |_)| | | | | || (_| |  ) ) ) )
'  |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot ::        (v2.2.6.RELEASE)

2020-05-11 09:51:09.479  INFO 6352 --- [           main] c.a.c.n.c.NacosPropertySourceBuilder     : Loading nacos data, dataId: 'demo', group: 'DEFAULT_GROUP', data: spring:
profiles:
  active: dev

sharding:
datasource:
  db0:
    driverClassName: com.mysql.cj.jdbc.Driver
    jdbc-url: jdbc:mysql://106.13.181.6:3306/demo0
    username: root
    password: 123456
  db1:
    driverClassName: com.mysql.cj.jdbc.Driver
    jdbc-url: jdbc:mysql://106.13.181.6:3306/demo1
    username: root
    password: 123456
2020-05-11 09:51:09.489  WARN 6352 --- [           main] c.a.c.n.c.NacosPropertySourceBuilder     : Ignore the empty nacos configuration and get it based on dataId[demo.yml] & group[DEFAULT_GROUP]
2020-05-11 09:51:09.495  WARN 6352 --- [           main] c.a.c.n.c.NacosPropertySourceBuilder     : Ignore the empty nacos configuration and get it based on dataId[demo-dev.yml] & group[DEFAULT_GROUP]
2020-05-11 09:51:09.495  INFO 6352 --- [           main] b.c.PropertySourceBootstrapConfiguration : Located property source: CompositePropertySource {name='NACOS', propertySources=[NacosPropertySource {name='demo-dev.yml'}, NacosPropertySource {name='demo.yml'}, NacosPropertySource {name='demo'}]}
2020-05-11 09:51:09.499  INFO 6352 --- [           main] com.example.demo.DemoApplication         : The following profiles are active: dev
2020-05-11 09:51:09.965  WARN 6352 --- [           main] o.m.s.mapper.ClassPathMapperScanner      : Skipping MapperFactoryBean with name 'userMapper' and 'com.example.demo.mapper.UserMapper' mapperInterface. Bean already defined with the same name!
2020-05-11 09:51:09.965  WARN 6352 --- [           main] o.m.s.mapper.ClassPathMapperScanner      : No MyBatis mapper was found in '[com.example.demo.mapper]' package. Please check your configuration.
2020-05-11 09:51:09.966  INFO 6352 --- [           main] o.s.c.a.ConfigurationClassPostProcessor  : Cannot enhance @Configuration bean definition 'sqlSessionConfig' since its singleton instance has been created too early. The typical cause is a non-static @Bean method with a BeanDefinitionRegistryPostProcessor return type: Consider declaring such methods as 'static'.
2020-05-11 09:51:09.989  INFO 6352 --- [           main] o.s.cloud.context.scope.GenericScope     : BeanFactory id=3955a554-148e-313a-91f9-d6a10f2dc8c3
2020-05-11 09:51:10.150  INFO 6352 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$dd8e22ae] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2020-05-11 09:51:10.380  INFO 6352 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2020-05-11 09:51:10.386  INFO 6352 --- [           main] o.a.coyote.http11.Http11NioProtocol      : Initializing ProtocolHandler ["http-nio-8080"]
2020-05-11 09:51:10.387  INFO 6352 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2020-05-11 09:51:10.387  INFO 6352 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.33]
2020-05-11 09:51:10.507  INFO 6352 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2020-05-11 09:51:10.508  INFO 6352 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 994 ms
2020-05-11 09:51:10.770  INFO 6352 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2020-05-11 09:51:11.562  INFO 6352 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
2020-05-11 09:51:11.570  INFO 6352 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-2 - Starting...
2020-05-11 09:51:12.226  INFO 6352 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-2 - Start completed.
_ _   |_  _ _|_. ___ _ |    _ 
| | |\/|_)(_| | |_\  |_)||_|_\ 
   /               |         
                      3.3.1 
2020-05-11 09:51:12.876  WARN 6352 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2020-05-11 09:51:12.877  INFO 6352 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2020-05-11 09:51:12.880  WARN 6352 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2020-05-11 09:51:12.880  INFO 6352 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2020-05-11 09:51:13.019  INFO 6352 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2020-05-11 09:51:13.257  INFO 6352 --- [           main] o.s.s.c.ThreadPoolTaskScheduler          : Initializing ExecutorService
2020-05-11 09:51:13.477  INFO 6352 --- [           main] o.a.coyote.http11.Http11NioProtocol      : Starting ProtocolHandler ["http-nio-8080"]
2020-05-11 09:51:13.495  INFO 6352 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2020-05-11 09:51:13.554  INFO 6352 --- [           main] c.a.c.n.registry.NacosServiceRegistry    : nacos registry, DEFAULT_GROUP demo 10.118.37.75:8080 register finished
2020-05-11 09:51:13.621  INFO 6352 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 5.276 seconds (JVM running for 6.226)
2020-05-11 09:51:16.719  INFO 6352 --- [nio-8080-exec-2] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet'
2020-05-11 09:51:16.720  INFO 6352 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2020-05-11 09:51:16.730  INFO 6352 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Completed initialization in 10 ms
2020-05-11 09:51:16.792  INFO 6352 --- [nio-8080-exec-2] com.example.demo.config.LogAspect        : 
请求信息:
【请求地址】:/demo/create
【请求头】:content-type = application/json, user-agent = PostmanRuntime/7.24.0, accept = */*, postman-token = 25dbfb89-782d-45b2-bbb1-b41380c27af7, host = localhost:8080, accept-encoding = gzip, deflate, br, connection = keep-alive, content-length = 61
【请求方法】:String com.example.demo.controller.UserController.create(UserDTO)
【请求参数】:[UserDTO(id=123458, name=zhangsan, phone=17751033130, sex=1)]
2020-05-11 09:51:16.832 DEBUG 6352 --- [nio-8080-exec-2] c.example.demo.mapper.UserMapper.insert  : ==>  Preparing: INSERT INTO user ( id, name, sex, phone, create_time, enable, version ) VALUES ( ?, ?, ?, ?, ?, ?, ? ) 
2020-05-11 09:51:16.848 DEBUG 6352 --- [nio-8080-exec-2] c.example.demo.mapper.UserMapper.insert  : ==> Parameters: 123458(Long), zhangsan(String), MAN(String), 17751033130(String), 2020-05-11T09:51:16.797(LocalDateTime), true(Boolean), 1(Long)
2020-05-11 09:51:16.905  INFO 6352 --- [nio-8080-exec-2] ShardingSphere-SQL                       : Rule Type: sharding
2020-05-11 09:51:16.905  INFO 6352 --- [nio-8080-exec-2] ShardingSphere-SQL                       : Logic SQL: INSERT INTO user  ( id,
name,
sex,
phone,
create_time,
enable,
version )  VALUES  ( ?,
?,
?,
?,
?,
?,
? )
2020-05-11 09:51:16.905  INFO 6352 --- [nio-8080-exec-2] ShardingSphere-SQL                       : SQLStatement: InsertStatement(super=DMLStatement(super=io.shardingsphere.core.parsing.parser.sql.dml.insert.InsertStatement@362afd05), columns=[Column(name=id, tableName=user), Column(name=name, tableName=user), Column(name=sex, tableName=user), Column(name=phone, tableName=user), Column(name=create_time, tableName=user), Column(name=enable, tableName=user), Column(name=version, tableName=user)], generatedKeyConditions=[], insertValues=InsertValues(insertValues=[InsertValue(type=VALUES, expression=( ?,
?,
?,
?,
?,
?,
? ), parametersCount=7)]), columnsListLastPosition=71, generateKeyColumnIndex=-1, insertValuesListLastPosition=105)
2020-05-11 09:51:16.905  INFO 6352 --- [nio-8080-exec-2] ShardingSphere-SQL                       : Actual SQL: db0 ::: INSERT INTO user0  ( id,
name,
sex,
phone,
create_time,
enable,
version )  VALUES  ( ?,
?,
?,
?,
?,
?,
? ) ::: [[123458, zhangsan, MAN, 17751033130, 2020-05-11T09:51:16.797, true, 1]]
2020-05-11 09:51:17.132 DEBUG 6352 --- [nio-8080-exec-2] c.example.demo.mapper.UserMapper.insert  : <==    Updates: 1
2020-05-11 09:51:17.135  INFO 6352 --- [nio-8080-exec-2] com.example.demo.config.LogAspect        : 
执行结果:
【响应结果】:"ok"
【执行耗时】:343毫秒

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