thrift servlet

 

Thrift usually exists as an independent service, also supports the HTTP protocol, and runs in Tomcat as a servlet.

 

1. Server Servlet

The implementation is relatively simple, just implement TExtensibleServlet and fill in the implementation class in getProcessor().

/**
 * Thrift servlet
 */
@WebServlet(name="thrifttest",value="/thrifttest")
public class ThriftService extends TExtensibleServlet {
	private static final long serialVersionUID = 1L;

	@Override
	protected TProtocolFactory getInProtocolFactory() {
		TProtocolFactory factory = new TCompactProtocol.Factory();
		return factory;
	}

	@Override
	protected TProtocolFactory getOutProtocolFactory() {
		TProtocolFactory factory = new TCompactProtocol.Factory();
		return factory;
	}

	@Override
	protected TProcessor getProcessor() {
		// interface implementation class
		ThriftServiceImpl impl = new ThriftServiceImpl();

		// return handler
		TProcessor tProcesser = new SimpleThriftService.Processor<SimpleThriftService.Iface>(impl);
		return tProcesser;
	}
}

 

2. Client

/**
 * Http thrift client
 */
public static void httpClient() {  
	String url = "http://host:8080/servlet3/thrifttest";  
	try {
		TTransport transport = new THttpClient(url); 	         
		TProtocol protocol = new TCompactProtocol(transport); // HTTP communication protocol     
		SimpleThriftService.Client client = new SimpleThriftService.Client(protocol);

		transport.open();  
		int val = client.getInt(10); // call method
		System.out.println( "Val: " + val );

		transport.close();  
	} catch (TException e) {
		e.printStackTrace ();
	}  
}

 

3. Protocol Analysis