您可以通过Amazon VPC(Direct Connect)服务将AWS云和您的本地数据中心网络直接连接。要连接多个子网，需要在“virtual private gateway”的路由表中添加这些子网。在这里，我们提供了Java和Python SDK示例代码，以便您在AWS Lambda中运行：

Java示例代码：

import com.amazonaws.services.ec2.AmazonEC2ClientBuilder;
import com.amazonaws.services.ec2.model.CreateRouteRequest;
import com.amazonaws.services.ec2.model.RouteTable;

public class VPC {

    public static void main(String[] args) {

        // Create an Amazon EC2 client
        AmazonEC2ClientBuilder builder = AmazonEC2ClientBuilder.standard();
        builder.setRegion("REGION");
        builder.setCredentials(new AWSStaticCredentialsProvider(new BasicAWSCredentials("ACCESS_KEY", "SECRET_KEY")));

        // Get the route table for the virtual private gateway
        RouteTable routeTable = getRouteTable(builder, "ROUTE_TABLE_ID");

        // Add the subnets to the routing table
        addSubnetsToRouteTable(builder, routeTable, "SUBNET_ID_1", "SUBNET_ID_2");

    }

    private static RouteTable getRouteTable(AmazonEC2ClientBuilder builder, String routeTableId) {
        DescribeRouteTablesRequest request = new DescribeRouteTablesRequest();
        request.setRouteTableIds(Arrays.asList(routeTableId));
        DescribeRouteTablesResult result = builder.build().describeRouteTables(request);
        return result.getRouteTables().get(0);
    }

    private static void addSubnetsToRouteTable(AmazonEC2ClientBuilder builder, RouteTable routeTable, String... subnetIds) {
        for (String subnetId : subnetIds) {
            CreateRouteRequest request = new CreateRouteRequest();
            request.setRouteTableId(routeTable.getRouteTableId());
            request.setDestinationCidrBlock("10.0.0.0/24");
            request.setNetworkInterfaceId("NETWORK_INTERFACE_ID");
            builder.build().createRoute(request);
        }
    }

}

Python示例代码：

import boto3

def add_subnets_to_route_table(route_table_id, subnet_ids):
    
    # Create a client