SpringBoot2.0整合sharding-jdbc中间件实现数据分库分表

spring:
 datasource:
  # 数据源：shard_one
  dataOne:
   type: com.alibaba.druid.pool.DruidDataSource
   druid:
    driverClassName: com.MySQL.jdbc.Driver
    url: jdbc:mysql://localhost:3306/shard_one?useUnicode=true&characterEncoding=UTF8&zeroDateTimeBehavior=convertToNull&useSSL=false
    username: root
    password: 123
    initial-size: 10
    max-active: 100
    min-idle: 10
    max-wait: 60000
    pool-prepared-statements: true
    max-pool-prepared-statement-per-connection-size: 20
    time-between-eviction-runs-millis: 60000
    min-evictable-idle-time-millis: 300000
    max-evictable-idle-time-millis: 60000
    validation-query: SELECT 1 FROM DUAL
    # validation-query-timeout: 5000
    test-on-borrow: false
    test-on-return: false
    test-while-idle: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
  # 数据源：shard_two
  dataTwo:
   type: com.alibaba.druid.pool.DruidDataSource
   druid:
    driverClassName: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/shard_two?useUnicode=true&characterEncoding=UTF8&zeroDateTimeBehavior=convertToNull&useSSL=false
    username: root
    password: 123
    initial-size: 10
    max-active: 100
    min-idle: 10
    max-wait: 60000
    pool-prepared-statements: true
    max-pool-prepared-statement-per-connection-size: 20
    time-between-eviction-runs-millis: 60000
    min-evictable-idle-time-millis: 300000
    max-evictable-idle-time-millis: 60000
    validation-query: SELECT 1 FROM DUAL
    # validation-query-timeout: 5000
    test-on-borrow: false
    test-on-return: false
    test-while-idle: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
  # 数据源：shard_three
  dataThree:
   type: com.alibaba.druid.pool.DruidDataSource
   druid:
    driverClassName: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/shard_three?useUnicode=true&characterEncoding=UTF8&zeroDateTimeBehavior=convertToNull&useSSL=false
    username: root
    password: 123
    initial-size: 10
    max-active: 100
    min-idle: 10
    max-wait: 60000
    pool-prepared-statements: true
    max-pool-prepared-statement-per-connection-size: 20
    time-between-eviction-runs-millis: 60000
    min-evictable-idle-time-millis: 300000
    max-evictable-idle-time-millis: 60000
    validation-query: SELECT 1 FROM DUAL
    # validation-query-timeout: 5000
    test-on-borrow: false
    test-on-return: false
    test-while-idle: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000

/**
 * 数据库映射计算
 */
public class DataSourceAlg implements PreciseShardingAlgorithm {

  private static Logger LOG = LoggerFactory.getLogger(DataSourceAlg.class);
  @Override
  public String doSharding(Collection names, PreciseShardingValue value) {
    LOG.debug("分库算法参数 {},{}",names,value);
    int hash = HashUtil.rsHash(String.valueOf(value.getValue()));
    return "ds_" + ((hash % 2) + 2) ;
  }
}

/**
 * 分表算法
 */
public class TableOneAlg implements PreciseShardingAlgorithm {
  private static Logger LOG = LoggerFactory.getLogger(TableOneAlg.class);
  /**
   * 该表每个库分5张表
   */
  @Override
  public String doSharding(Collection names, PreciseShardingValue value) {
    LOG.debug("分表算法参数 {},{}",names,value);
    int hash = HashUtil.rsHash(String.valueOf(value.getValue()));
    return "table_one_" + (hash % 5+1);
  }
}

/**
 * 分表算法
 */
public class TableTwoAlg implements PreciseShardingAlgorithm {
  private static Logger LOG = LoggerFactory.getLogger(TableTwoAlg.class);
  /**
   * 该表每个库分5张表
   */
  @Override
  public String doSharding(Collection names, PreciseShardingValue value) {
    LOG.debug("分表算法参数 {},{}",names,value);
    int hash = HashUtil.rsHash(String.valueOf(value.getValue()));
    return "table_two_" + (hash % 5+1);
  }
}

/**
 * 数据库分库分表配置
 */
@Configuration
public class ShardJdbcConfig {
  // 省略了 druid 配置，源码中有
  /**
   * Shard-JDBC 分库配置
   */
  @Bean
  public DataSource dataSource (@Autowired DruidDataSource dataOneSource,
                 @Autowired DruidDataSource dataTwoSource,
                 @Autowired DruidDataSource dataThreeSource) throws Exception {
    ShardingRuleConfiguration shardJdbcConfig = new ShardingRuleConfiguration();
    shardJdbcConfig.getTableRuleConfigs().add(getTableRule01());
    shardJdbcConfig.getTableRuleConfigs().add(getTableRule02());
    shardJdbcConfig.setDefaultDataSourceName("ds_0");
    Map dataMap = new LinkedHashMap<>() ;
    dataMap.put("ds_0",dataOneSource) ;
    dataMap.put("ds_2",dataTwoSource) ;
    dataMap.put("ds_3",dataThreeSource) ;
    Properties prop = new Properties();
    return ShardingDataSourceFactory.createDataSource(dataMap, shardJdbcConfig, new HashMap<>(), prop);
  }

  /**
   * Shard-JDBC 分表配置
   */
  private static TableRuleConfiguration getTableRule01() {
    TableRuleConfiguration result = new TableRuleConfiguration();
    result.setLogicTable("table_one");
    result.setActualDataNodes("ds_${2..3}.table_one_${1..5}");
    result.setDatabaseShardingStrategyConfig(new StandardShardingStrategyConfiguration("phone", new DataSourceAlg()));
    result.setTableShardingStrategyConfig(new StandardShardingStrategyConfiguration("phone", new TableOneAlg()));
    return result;
  }
  private static TableRuleConfiguration getTableRule02() {
    TableRuleConfiguration result = new TableRuleConfiguration();
    result.setLogicTable("table_two");
    result.setActualDataNodes("ds_${2..3}.table_two_${1..5}");
    result.setDatabaseShardingStrategyConfig(new StandardShardingStrategyConfiguration("phone", new DataSourceAlg()));
    result.setTableShardingStrategyConfig(new StandardShardingStrategyConfiguration("phone", new TableTwoAlg()));
    return result;
  }
}

@RestController
public class ShardController {
  @Resource
  private ShardService shardService ;
  /**
   * 1、建表流程
   */
  @RequestMapping("/createTable")
  public String createTable (){
    shardService.createTable();
    return "success" ;
  }
  /**
   * 2、生成表 table_one 数据
   */
  @RequestMapping("/insertOne")
  public String insertOne (){
    shardService.insertOne();
    return "SUCCESS" ;
  }
  /**
   * 3、生成表 table_two 数据
   */
  @RequestMapping("/insertTwo")
  public String insertTwo (){
    shardService.insertTwo();
    return "SUCCESS" ;
  }
  /**
   * 4、查询表 table_one 数据
   */
  @RequestMapping("/selectOneByPhone/{phone}")
  public TableOne selectOneByPhone (@PathVariable("phone") String phone){
    return shardService.selectOneByPhone(phone);
  }
  /**
   * 5、查询表 table_one 数据
   */
  @RequestMapping("/selectTwoByPhone/{phone}")
  public TableTwo selectTwoByPhone (@PathVariable("phone") String phone){
    return shardService.selectTwoByPhone(phone);
  }
}