Thrift是一款可扩展的高效的跨语言服务开发框架，支持多种编程语言，包括Java、C++、Python等。使用Thrift进行跨语言RPC调用的步骤如下：
namespace java com.example
service MyService {
void ping()
i32 add(1:i32 a, 2:i32 b)
}thrift --gen java MyService.thriftpublic class MyServiceImpl implements MyService.Iface {
@Override
public void ping() throws TException {
System.out.println("pong");
}
@Override
public int add(int a, int b) throws TException {
return a + b;
}
}TServerTransport serverTransport = new TServerSocket(9090);
TServer server = new TSimpleServer(new Args(serverTransport)
.processor(new MyService.Processor<>(new MyServiceImpl())));
System.out.println("Starting the server...");
server.serve();TTransport transport = new TSocket("localhost", 9090);
transport.open();
TProtocol protocol = new TBinaryProtocol(transport);
MyService.Client client = new MyService.Client(protocol);
client.ping();
int sum = client.add(1, 2);
System.out.println("1 + 2 = " + sum);
transport.close();以上是使用Thrift进行跨语言RPC调用的基本步骤，需要注意的是，Thrift支持多种传输协议和数据序列化方式，可以根据具体需求进行配置。