Question

我正在尝试在我的Windows机器上构建一个thrift服务。我正在使用cygwin和Netbeans IDE。我已经下载了Thrift并通过cygwin构建了它，并且能够成功地让Thrift为我生成服务器代码，如下所示。

#include "Feed.h"
#include <protocol/TBinaryProtocol.h>
#include <server/TSimpleServer.h>
#include <transport/TServerSocket.h>
#include <transport/TBufferTransports.h>

using namespace ::apache::thrift;
using namespace ::apache::thrift::protocol;
using namespace ::apache::thrift::transport;
using namespace ::apache::thrift::server;

using boost::shared_ptr;

using namespace feed;

class FeedHandler : virtual public FeedIf {
 public:
  FeedHandler() {
    // Your initialization goes here
  }

  void ping() {
    // Your implementation goes here
    printf("ping\n");
  }

  void search_text(search_resultset& _return, const std::string& query, const int32_t offset, const int32_t per_page) {
    // Your implementation goes here
    printf("search_text\n");
  }

  void search_prox_web(search_resultset& _return, const double lat, const double lon, const int32_t offset, const int32_t distance) {
    // Your implementation goes here
    printf("search_prox_web\n");
  }

  void search_prox_mob(search_resultset& _return, const double lat, const double lon, const int32_t offset, const int32_t distance) {
    // Your implementation goes here
    printf("search_prox_mob\n");
  }

  int32_t add_event(const std::string& name) {
    // Your implementation goes here
    printf("add_event\n");
  }

  int32_t associate_venue_with_event(const int32_t event_id, const int32_t venue_id, const int32_t usr_loc_id) {
    // Your implementation goes here
    printf("associate_venue_with_event\n");
  }

  int32_t save_usr_loc(const std::string& address) {
    // Your implementation goes here
    printf("save_usr_loc\n");
  }

};

int main(int argc, char **argv) {
  int port = 9090;
  shared_ptr<FeedHandler> handler(new FeedHandler());
  shared_ptr<TProcessor> processor(new FeedProcessor(handler));
  shared_ptr<TServerTransport> serverTransport(new TServerSocket(port));
  shared_ptr<TTransportFactory> transportFactory(new TBufferedTransportFactory());
  shared_ptr<TProtocolFactory> protocolFactory(new TBinaryProtocolFactory());

  TSimpleServer server(processor, serverTransport, transportFactory, protocolFactory);
  server.serve();
  return 0;
}

然后我构建了库，以便我可以编译和链接我的实现。库成功构建，但是当我尝试编译时，我收到以下错误：

build/Debug/Cygwin_4.x-Windows/main.o: In function `FeedProcessor': 
/cygdrive/c/Feed Service/Feed.h:930: undefined reference to `vtable for feed::FeedProcessor'
/cygdrive/c/Feed Service/Feed.h:930: undefined reference to `vtable for feed::FeedProcessor'
/cygdrive/c/Feed Service/Feed.h:931: undefined reference to `feed::FeedProcessor::process_ping(int, apache::thrift::protocol::TProtocol*, apache::thrift::protocol::TProtocol*, void*)'
/cygdrive/c/Feed Service/Feed.h:932: undefined reference to `feed::FeedProcessor::process_search_text(int, apache::thrift::protocol::TProtocol*, apache::thrift::protocol::TProtocol*, void*)'
/cygdrive/c/Feed Service/Feed.h:933: undefined reference to `feed::FeedProcessor::process_search_prox_web(int, apache::thrift::protocol::TProtocol*, apache::thrift::protocol::TProtocol*, void*)'
/cygdrive/c/Feed Service/Feed.h:934: undefined reference to `feed::FeedProcessor::process_search_prox_mob(int, apache::thrift::protocol::TProtocol*, apache::thrift::protocol::TProtocol*, void*)'
/cygdrive/c/Feed Service/Feed.h:935: undefined reference to `feed::FeedProcessor::process_add_event(int, apache::thrift::protocol::TProtocol*, apache::thrift::protocol::TProtocol*, void*)'
/cygdrive/c/Feed Service/Feed.h:936: undefined reference to `feed::FeedProcessor::process_associate_venue_with_event(int, apache::thrift::protocol::TProtocol*, apache::thrift::protocol::TProtocol*, void*)'
/cygdrive/c/Feed Service/Feed.h:937: undefined reference to `feed::FeedProcessor::process_save_usr_loc(int, apache::thrift::protocol::TProtocol*, apache::thrift::protocol::TProtocol*, void*)'
collect2: ld returned 1 exit status
make[2]: *** [dist/Debug/Cygwin_4.x-Windows/feed_service.exe] Error 1
make[1]: *** [.build-conf] Error 2
make: *** [.build-impl] Error 2

BUILD FAILED (exit value 2, total time: 3s)

我认为这些都是链接器错误，所以我做了一些谷歌搜索并找到了一个可能的解决方案，将以下行添加到makefile中：

THRIFT_O=C:/cygwin/home/thrift/lib/cpp
    LTHRIFT=$(THRIFT_O)/Thrift.o $(THRIFT_O)/TSocket.o $(THRIFT_O)/TSimpleServer.o $(THRIFT_O)/TBufferTransports.o $(THRIFT_O)/TSimpleServer.o $(THRIFT_O)/TBinaryProtocol.o

然后用$（LTHRIFT）而不是-lthrift链接。但是，我的系统上似乎没有TBinaryProtocol.o文件。我尝试从源重建两次库，但文件仍未生成。

首先，将这些行添加到我的makefile中是否是我最初问题的正确解决方案？其次，是不存在TBinaryProtocol.o一个主要问题，还是因为某个原因没有创建？如果我确实需要它，有没有办法可以单独制作或从某个地方下载？

编辑：所有包含文件都是由Thrift编译器自动生成的。我试图在这里包含Feed.h，但是它太大并超过了字符限制，所以我包含了错误中引用的部分。

class FeedProcessor : virtual public ::apache::thrift::TProcessor {
 protected:
  boost::shared_ptr<FeedIf> iface_;
  virtual bool process_fn(::apache::thrift::protocol::TProtocol* iprot, ::apache::thrift::protocol::TProtocol* oprot, std::string& fname, int32_t seqid, void* callContext);
 private:
  std::map<std::string, void (FeedProcessor::*)(int32_t, ::apache::thrift::protocol::TProtocol*, ::apache::thrift::protocol::TProtocol*, void*)> processMap_;
  void process_ping(int32_t seqid, ::apache::thrift::protocol::TProtocol* iprot, ::apache::thrift::protocol::TProtocol* oprot, void* callContext);
  void process_search_text(int32_t seqid, ::apache::thrift::protocol::TProtocol* iprot, ::apache::thrift::protocol::TProtocol* oprot, void* callContext);
  void process_search_prox_web(int32_t seqid, ::apache::thrift::protocol::TProtocol* iprot, ::apache::thrift::protocol::TProtocol* oprot, void* callContext);
  void process_search_prox_mob(int32_t seqid, ::apache::thrift::protocol::TProtocol* iprot, ::apache::thrift::protocol::TProtocol* oprot, void* callContext);
  void process_add_event(int32_t seqid, ::apache::thrift::protocol::TProtocol* iprot, ::apache::thrift::protocol::TProtocol* oprot, void* callContext);
  void process_associate_venue_with_event(int32_t seqid, ::apache::thrift::protocol::TProtocol* iprot, ::apache::thrift::protocol::TProtocol* oprot, void* callContext);
  void process_save_usr_loc(int32_t seqid, ::apache::thrift::protocol::TProtocol* iprot, ::apache::thrift::protocol::TProtocol* oprot, void* callContext);
 public:
  FeedProcessor(boost::shared_ptr<FeedIf> iface) :
    iface_(iface) {
    processMap_["ping"] = &FeedProcessor::process_ping;
    processMap_["search_text"] = &FeedProcessor::process_search_text;
    processMap_["search_prox_web"] = &FeedProcessor::process_search_prox_web;
    processMap_["search_prox_mob"] = &FeedProcessor::process_search_prox_mob;
    processMap_["add_event"] = &FeedProcessor::process_add_event;
    processMap_["associate_venue_with_event"] = &FeedProcessor::process_associate_venue_with_event;
    processMap_["save_usr_loc"] = &FeedProcessor::process_save_usr_loc;
  }

  virtual bool process(boost::shared_ptr< ::apache::thrift::protocol::TProtocol> piprot, boost::shared_ptr< ::apache::thrift::protocol::TProtocol> poprot, void* callContext);
  virtual ~FeedProcessor() {}
};

任何帮助将不胜感激，我非常坚持这一点。

Answer 1

为了完整起见：

（1）在Windows上，不需要自己构建Thrift编译器EXE ，有一个（小）安装程序to be downloaded here。

（2）如果你仍然想要或者需要构建Thrift编译器二进制文件，你仍然不需要启动Cygwin：更新版本的Apache Thrift提供了一个不错的Visual Studio solution，它只需要{{3}作为依赖。像魅力一样。

在Windows中编译Apache Thrift服务

1 个答案: