spring域名多租户

@Configuration
public class TenantDataSourceConfig {

    @Bean
    @Primary
    public DataSource dataSource() {
        Map<Object, Object> targetDataSources = new HashMap<>();
        targetDataSources.put("tenant1", tenant1DataSource());
        targetDataSources.put("tenant2", tenant2DataSource());
        // 其他租户的数据源

        RoutingDataSource routingDataSource = new RoutingDataSource();
        routingDataSource.setTargetDataSources(targetDataSources);
        routingDataSource.setDefaultTargetDataSource(defaultDataSource());
        return routingDataSource;
    }

    @Bean
    public DataSource tenant1DataSource() {
        // 配置tenant1的数据源
    }

    @Bean
    public DataSource tenant2DataSource() {
        // 配置tenant2的数据源
    }

    @Bean
    public DataSource defaultDataSource() {
        // 配置默认数据源
    }
}

public class RoutingDataSource extends AbstractRoutingDataSource {
    @Override
    protected Object determineCurrentLookupKey() {
        return TenantContext.getCurrentTenant();
    }
}

public class TenantContext {
    private static final ThreadLocal<String> currentTenant = new ThreadLocal<>();

    public static void setCurrentTenant(String tenant) {
        currentTenant.set(tenant);
    }

    public static String getCurrentTenant() {
        return currentTenant.get();
    }

    public static void clear() {
        currentTenant.remove();
    }
}

@Component
public class TenantInterceptor extends HandlerInterceptorAdapter {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String tenantId = request.getHeader("X-Tenant-Id");
        if (tenantId != null) {
            TenantContext.setCurrentTenant(tenantId);
        }
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        TenantContext.clear();
    }
}