多数据源属性放到配置文件配置

项目中，数据迁移涉及到多个数据源，需要在代码里动态切换，且子工程需要在配置文件中配置多个数据源。有了如下配置：

改写后的数据源。加2个属性

@Data
public class LocalHikariDataSource extends HikariDataSource {
	//多数据源配置时的名字
	private String dataSourceName;
	//是否默认数据源
	private String isDefault;
}

数据源有区别的属性

@Data
public class DataSourceParam {
	// 给数据源起的别外，用于切换数据源使用
	private DataSourceName dataSourceName;
	// jdbcurl
	private String url;
	// jdbc驱动名
	private String driver;
	// jdbc帐号
	private String userName;
	// jdbc密码
	private String password;
	// 是否默认数据源,多数据源默认的那个
	private Boolean isDefault = false;
	// 测试连接用的aql,如select 1,select 1 from dual
	private String testSelectSql;
}

动态数据源

public class DynamicDataSource extends AbstractRoutingDataSource {

	@Autowired
	List<LocalHikariDataSource> localHikariDataSources;

	@Override
	public void afterPropertiesSet() {
		Map<Object, Object> targetDataSources = newHashMap();

		for (LocalHikariDataSource dataSource : localHikariDataSources) {
			if (dataSource.isDefault()) {
				this.setDefaultTargetDataSource(dataSource);
			}
			targetDataSources.put(dataSource.getDataSourceName(), dataSource);
		}
		this.setTargetDataSources(targetDataSources);

		super.afterPropertiesSet();
	}

	@Override
	protected Object determineCurrentLookupKey() {
		return RouteThreadLocal.get();
	}
}

属性配置类

@ConfigurationProperties(prefix = "com.datamove")
public class DataMoveProperties  {

	public List<DataSourceParam> sourceParams = new ArrayList<>();

	public List<DataSourceParam> getSourceParams() {
		return sourceParams;
	}

	public void setSourceParams(List<DataSourceParam> sourceParams) {
		this.sourceParams = sourceParams;
	}

}

配置类：

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.BeanDefinitionRegistryPostProcessor;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.EnvironmentAware;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.env.Environment;

/**
 * @description 【多数据源配置】
 * @author Simple-Zeng
 * @DATE 2020年3月17日下午3:52:35
 */
@Configuration("dynamicDataSourceConfig")
@Profile("datamove")
public class DataMoveConfig implements BeanDefinitionRegistryPostProcessor, EnvironmentAware {
	//此处是不能直接把DataMoveProperties 注入进来的，
	//只能从环境里面去读取配置，注册bean会在初始化DataMoveProperties 之前执行。参考BeanDefinitionRegistryPostProcessor的执行时机
	private Environment environment;

	@Bean
	@Primary
	public DynamicDataSource createDynamicDataSource() {
		return new DynamicDataSource();
	}

	@Override
	public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
		for (int i = 0; i < 10; i++) {
			String dataSourceName = getProperties(i, "data-source-name");
			if (isNull(dataSourceName)) {
				break;
			}
			String jdbcurl = getProperties(i, "url");
			String driver = getProperties(i, "driver");
			String userName = getProperties(i, "user-name");
			String password = getProperties(i, "password");
			String isDefault = getProperties(i, "is-default");
			boolean isDefaultboo = Boolean.parseBoolean(isDefault);
			String testSelectSql = getProperties(i, "test-select-sql");

			BeanDefinitionBuilder rootBeanDefinition = BeanDefinitionBuilder
					.rootBeanDefinition(LocalHikariDataSource.class);
			rootBeanDefinition.addPropertyValue("driverClassName", driver);
			rootBeanDefinition.addPropertyValue("jdbcUrl", jdbcurl);
			rootBeanDefinition.addPropertyValue("username", userName);
			rootBeanDefinition.addPropertyValue("password", password);
			rootBeanDefinition.addPropertyValue("dataSourceName", dataSourceName);
			rootBeanDefinition.addPropertyValue("isDefault", isDefaultboo);
			rootBeanDefinition.addPropertyValue("initializationFailTimeout", 600000);
			rootBeanDefinition.addPropertyValue("connectionTestQuery", testSelectSql);
			rootBeanDefinition.addPropertyValue("MinimumIdle", 5);
			rootBeanDefinition.addPropertyValue("maximumPoolSize", 10);
			rootBeanDefinition.addPropertyValue("autoCommit", true);
			rootBeanDefinition.addPropertyValue("idleTimeout", 170000);
			rootBeanDefinition.addPropertyValue("poolName", "DatebookHikariCP");
			rootBeanDefinition.addPropertyValue("maxLifetime", 180000);
			rootBeanDefinition.addPropertyValue("connectionTimeout", 20000);
			registry.registerBeanDefinition(dataSourceName, rootBeanDefinition.getBeanDefinition());
		}
	}

	@Override
	public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {

	}

	@Override
	public void setEnvironment(Environment environment) {
		this.environment = environment;
	}

	private String getProperties(int i, String name) {
		String key = "com.datamove.source-params[" + i + "]." + name;
		return environment.getProperty(key);
	}
}

com:
        datamove:
            sourceParams:
                - dataSourceName: sourcedbDataSoucre
                  url: xxxxxxxxxxxxxxxxxxxxxxx
                  driver: xxxxxxxxxxxxxxxxxxxxxxx
                  userName: xxxxxxxxxxxxxxxxxxxxxxx
                  password: xxxxxxxxxxxxxxxxxxxxxxx
                  isDefault: true
                  testSelectSql: SELECT 1 FROM DUAL
                - dataSourceName: targerdbDataSource1
                  url:xxxxxxxxxxxxxxxxxxxxxxx
                  driver: xxxxxxxxxxxxxxxxxxxxxxx
                  userName: xxxxxxxxxxxxxxxxxxxxxxx
                  password: xxxxxxxxxxxxxxxxxxxxxxx
                  isDefault: false
                  testSelectSql: select 1
                - dataSourceName: targerdbDataSource2
                  url:xxxxxxxxxxxxxxxxxxxxxxx
                  driver: xxxxxxxxxxxxxxxxxxxxxxx
                  userName: xxxxxxxxxxxxxxxxxxxxxxx
                  password: xxxxxxxxxxxxxxxxxxxxxxx
                  isDefault: false
                  testSelectSql: select 1