Thrift初步了解
namespace php tServicenamespace java tServiceservice UserService { string getUserNameById(1:i32 userId);}
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server代码：ServerDemo.java
public class ServerDemo { public static void main(String[] args) { try { UserService.Processor processor = new UserService.Processor(new UserServiceImpl()); TServerTransport transport = new TServerSocket(9090); TServer server = new TSimpleServer(new TServer.Args(transport).processor(processor)); System.out.println("Starting the simple server..."); server.serve(); } catch (TTransportException e) { e.printStackTrace(); } }}?
client代码：ClientDemo.java
public class ClientDemo { public static void main(String[] args) { try { TTransport transport = new TSocket("localhost", 9090); TProtocol protocol = new TBinaryProtocol(transport); UserService.Client client = new UserService.Client(protocol); transport.open(); System.out.println(client.getUserNameById(24)); transport.close(); } catch (Exception e) { e.printStackTrace(); } }}?
定义的thrift接口文件，通过`thrift --gen java UserService.thrift`就可以得到java的接口类，在windows下运行“thrift.exe"可执行文件。thrift的安装文件，到官网下载然后安装。
在下载的thrift-0.9.1.tar.gz包下的tutorial文件夹下有各种常用语言的demo例子，拿来学习是很不错的资料。在java的例子中除了SimpleServer的例子还有一个secure的例子。
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二、PHP
client代码：ClientDemo.php
<?phperror_reporting(E_ALL);require_once __DIR__ . "/thrift/lib/Thrift/ClassLoader/ThriftClassLoader.php";use Thrift\ClassLoader\ThriftClassLoader;$GEN_DIR = realpath(dirname(__FILE__) . "/gen-php");$loader = new ThriftClassLoader();$loader->registerNamespace("Thrift", __DIR__ . "/thrift/lib");$loader->registerDefinition("tService", $GEN_DIR);$loader->register();use Thrift\Transport\TSocket;use Thrift\Transport\TBufferedTransport;use Thrift\Protocol\TBinaryProtocol;try { $socket = new TSocket('localhost', 9090); $transport = new TBufferedTransport($socket); $protocol = new TBinaryProtocol($transport); $client = new \tService\UserServiceClient($protocol); $transport->open(); $userName = $client->getUserNameById(24); echo $userName; $transport->close();} catch (Exception $e) { echo $e->getMessage();}?server端的代码，在thrift的tutorial中有一个例子，但是生成的php接口类文件中没有“UserServiceProcessor”类，因为默认执行`thrift --gen php UserService.thrift`生成的php文件中是不包含server端的实现的，要使用php写server程序，需添加参数":server"，执行`thrift --gen php:server UserService.thrift`命令生产的php接口类中才会有server的实现。不过看server的代码，并是用到socket的类，所以php的server是有些特殊的，它需要apache的支持。
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php server代码：ServerDemo.php
<?phperror_reporting(E_ALL);require_once __DIR__ . '/thrift/lib/Thrift/ClassLoader/ThriftClassLoader.php';use Thrift\ClassLoader\ThriftClassLoader;$GEN_DIR = realpath(dirname(__FILE__)) . '/gen-php';$loader = new ThriftClassLoader();$loader->registerNamespace('Thrift', __DIR__ . '/thrift/lib');$loader->registerDefinition("tService", $GEN_DIR);$loader->register();use Thrift\Protocol\TBinaryProtocol;use Thrift\Transport\TPhpStream;use Thrift\Transport\TBufferedTransport;class UserServiceHandler implements \tService\UserServiceIf{ public function getUserNameById($userId) { return "hello, user(id:" . $userId . ")";; }}header('Content-Type', 'application/x-thrift');if (php_sapi_name() == 'cli') { echo "\r\n";}$userService = new UserServiceHandler();$processor = new \tService\UserServiceProcessor($userService);$transport = new TBufferedTransport(new TPhpStream(TPhpStream::MODE_R | TPhpStream::MODE_W));$protocol = new TBinaryProtocol($transport, true, true);$transport->open();$processor->process($protocol, $protocol);$transport->close();?把程序包放到apache配置的web目录，我本机环境为ubuntu12.04，所以把项目拷贝到"/var/www/“目录，ServerDemo.php在项目包ThriftDemo根目录下，所以client端的代码要修改为：
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<?phperror_reporting(E_ALL);require_once __DIR__ . "/thrift/lib/Thrift/ClassLoader/ThriftClassLoader.php";use Thrift\ClassLoader\ThriftClassLoader;$GEN_DIR = realpath(dirname(__FILE__) . "/gen-php");$loader = new ThriftClassLoader();$loader->registerNamespace("Thrift", __DIR__ . "/thrift/lib");$loader->registerDefinition("tService", $GEN_DIR);$loader->register();use Thrift\Transport\TSocket;use Thrift\Transport\TBufferedTransport;use Thrift\Protocol\TBinaryProtocol;use Thrift\Transport\THttpClient;try { $socket = new THttpClient('localhost', 80, '/ThriftDemo/ServerDemo.php'); $transport = new TBufferedTransport($socket); $protocol = new TBinaryProtocol($transport); $client = new \tService\UserServiceClient($protocol); $transport->open(); $userName = $client->getUserNameById(24); echo $userName; $transport->close();} catch (Exception $e) { echo $e->getMessage();}?这个时候，运行client的脚本，就可以访问php的thrift server实现类了。第一个的client可以访问java的server，所以php的server不是通过`php ServerDemo.php`来运行脚本的，client端是通过访问apache下的server脚本文件调用服务的。(php的server比java和ruby、python、perl等要繁琐一些，估计也很少用php写thrift的服务端代码)
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好的，下个语言！
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三、Ruby
server代码：server_demo.rb
require '../lib/thrift'require '../thrift-demo/gen-rb/user_service'class UserServiceHandler def getUserNameById(userId) return "hello, user(id: #{userId})" endendhandler = UserServiceHandler.new()processor = UserService::Processor.new(handler)transport = Thrift::ServerSocket.new('localhost', 9090)transportFactory = Thrift::BufferedTransportFactory.new()server = Thrift::SimpleServer.new(processor, transport, transportFactory)puts "Starting the server..."server.serve()?client代码：client_demo.rb
require '../lib/thrift'require '../thrift-demo/gen-rb/user_service'begin transport = Thrift::BufferedTransport.new(Thrift::Socket.new("localhost", 9090)) protocol = Thrift::BinaryProtocol.new(transport) client = UserService::Client.new(protocol) transport.open() puts client.getUserNameById(24) transport.close()rescue Thrift::Exception => tx puts 'Thrift.Exception: ', tx.messageend?ruby还是很简洁的，执行`thrift --gen rb UserService.thrift`生成ruby的接口类文件，然后依次运行server脚本和client脚本。
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四、Python
server代码：ServerDemo.py
__author__ = 'petric'import syssys.path.append('./gen-py')from UserService import UserServicefrom thrift.transport import TSocketfrom thrift.transport import TTransportfrom thrift.protocol import TBinaryProtocolfrom thrift.server import TServerclass UserServiceHandler: def getUserNameById(self, id): return "hello, user(id:%d)" %idhandler = UserServiceHandler()processor = UserService.Processor(handler)transport = TSocket.TServerSocket(port=9090)tFactory = TTransport.TBufferedTransportFactory()pFactory = TBinaryProtocol.TBinaryProtocolFactory()server = TServer.TSimpleServer(processor, transport, tFactory, pFactory)print "starting py server..."server.serve()?
client代码：ClientDemo.py
__author__ = 'petric'import syssys.path.append('./gen-py')from UserService import UserServicefrom thrift import Thriftfrom thrift.transport import TSocketfrom thrift.transport import TTransportfrom thrift.protocol import TBinaryProtocoltry: transport = TSocket.TSocket('localhost', 9090) transport = TTransport.TBufferedTransport(transport) protocol = TBinaryProtocol.TBinaryProtocol(transport) client = UserService.Client(protocol) transport.open() print client.getUserNameById(2) transport.close()except Thrift.TException, tx: print '%s' % (tx.message)执行`thrift --gen py UserService.thrift`生成ruby的接口类文件，然后依次运行server脚本和client脚本。
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但是，这里面还有一个问题，先说java，在pom.xml中加入thrift的依赖配置就可以，这就不说了；php中，在下载的thrift-0.9.1.tar.gz包下的lib目录下有各个语言的thrift的工具包，php下有lib工具包，ruby下也有lib工具包，拿到自己的项目中就行；不过，python和php和ruby不同，它的lib目录下面没有，不过多了个“setup.py“文件，哦，对用python做开发的同学就不用说了，不过对想玩一玩python例子的其它程序员-google一下也就清楚了，执行`sudo python setup.py install`就可以给python添加thrift支持包了。
好，再写一个例子，就当自己也了解一下其它语言的特点了
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五、Perl
对perl不是很了解，工作中也还没有用到过，先写client试一试
client代码：ClientDemo.pl
#!/usr/bin/env perluse strict;use warnings;use lib '../lib';use lib '../gen-perl';use Thrift;use Thrift::BinaryProtocol;use Thrift::Socket;use Thrift::BufferedTransport;use UserService;my $socket = new Thrift::Socket('localhost', 9090);my $transport = new Thrift::BufferedTransport($socket, 1024, 1024);my $protocol = new Thrift::BinaryProtocol($transport);my $client = new UserServiceClient($protocol);eval{ $transport->open(); print 'connection open...'; my $name = $client->getUserNameById(3); print "$name\n"; $transport->close();}; if($@){ warn(Dumper($@));}?访问java,python,ruby的server端没有问题，
server代码：ServerDemo.pl
#!/usr/bin/env perluse strict;use warnings;use lib '../lib';use lib '../gen-perl';use Thrift;use Thrift::Socket;use Thrift::Server;use UserService;package UserServiceHandler;use base qw(UserServiceIf);sub new { my $classname = shift; my $self = {}; return bless($self,$classname);}sub getUserNameById{ my($self, $userId) = @_; return ("hello, user(id:$userId)\n");}eval { my $handler = new UserServiceHandler; my $processor = new UserServiceProcessor($handler); my $serversocket = new Thrift::ServerSocket(9090); my $forkingserver = new Thrift::ForkingServer($processor, $serversocket); print "Starting perl server...\n"; $forkingserver->serve();}; if($@) { if ($@ =~ m/TException/ and exists $@->{message}) { my $message = $@->{message}; my $code = $@->{code}; my $out = $code . ':' . $message; die $out; } else { die $@; }}?我的系统自带的perl的版本是5.14.2，不过和python差不多也得安装一下环境，但不是python那样安装python的thrift工具包，perl也是把它的lib目录拷贝到自己的项目就可以。运行脚本报了一些错误，一些类啊文件什么的好像没有，google一下，下载了Class-Accessor-0.34.tar.gz，然后安装上(解压，make install)，又执行`sudo apt-get install libbit-vector-perl`，把perl的lib下的文件也跑了一下`perl Makefile.PL`和?`make install`。这样perl脚本的server和client都可以跑了，测试正常输出结果。
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六、js
在tutorial中还有js的例子，js不能访问通常的server的，都是通过socket创建的，只能通过ajax访问通过JSON protocol 和 HTTP transport开启的服务，照着tutorial的例子写了一遍，server用java写的，用到apache的httpcomponents包，启动一个http的server，指定自己的html(包含js的client端)文件所在的目录为webapp，通过设定的端口访问自己的html页面，如“http://localhost:8088/Client_Html.html“，这样js就可以访问thrift的接口服务了！哇～，这个例子最麻烦了，代码就不拷贝过来了。由于js的ajax通常情况下是跨不了域的，所以js的client端和server端需在一个域名下，例子中使用的HttpService相当与模拟了一个web server(apache,tomcat等)，那js请求的是一个url，如“/UserService/getUserNameById“，server端遇到该url会通过Processor调用实现类返回结果，其它的文件url就直接返回文件了。简单点就可以理解为：js要想访问thrift的service服务需通过web server这样一个中间层。