C++服務器和客戶端開發
參考:thrift下C++服務器和客戶端開發
參考:ThriftUsageC++
參考:Thrift 入門教程
Thrift環境搭建:
Ubuntu環境下Thrift的安裝、編譯以及測試
ubuntu下thrift的安裝
Thrift示例二:
Thrift C++ 服務器和客戶端開發實例–學習筆記二
ostringstream的清空方法
1 實現這個例子,我們大致要做以下幾部分事情:
(1)書寫.thrift文件
(2)生成cpp文件
(3)編寫客戶端
(4)編譯cpp文件並執行
下面是詳細的步驟:
(1)書寫.thrift文件
學生信息是有結構的,所以我們使用thrift的struct即可,爲了達到通信的目的,我們必須使用service。
所以最後書寫成的student.thrift文件內容如下:
struct Student{
1: i32 sno,
2: string sname,
3: bool ssex,
4: i16 sage,
}
service Serv{
void put(1: Student s),
i32 icall(1: Student s),
string scall(1: Student s),
/*
string& srcall(1: Student s),
-----------------------------
-thrift -r --gen cpp student.thrift
-error:
- [ERROR:/root/test/thrift/student.thrift:12] (last token was '&')
- syntax error
- [FAILURE:/root/test/thrift/student.thrift:12] Parser error during include pass.
-----------------------------
*/
Student stcall(1: Student s),
}
(2)生成cpp文件
生成cpp文件很簡單,只需要一個thrift命令即可:
/home/xiaoshe/opt/bin/thrift -r –gen cpp student.thrift
–gen 後指定生成的語言,生成的cpp存儲在目錄gen-cpp下
命令執行後,將會在./gen-cpp/目錄下生成如下文件:
Serv.cpp
Serv.h
Serv_server.skeleton.cpp
student_constants.cpp
student_constants.h
student_types.cpp
student_types.h
注意文件的大小寫:
Serv開頭的文件是由service生成的,這個關鍵字很重要,下面還會見到以它開頭的類。
student是根據student.thrift文件的名生成的。
這些文件可以進行編譯,生成最初的服務端。
(3)編寫客戶端
使用thrift命令後,我們並沒有得到我們想要的客戶端client源代碼,因此客戶端程序要由我們自己編寫實現。Client代碼如下:
#include "Serv.h"
#include <transport/TSocket.h>
#include <transport/TBufferTransports.h>
#include <protocol/TBinaryProtocol.h>
using namespace apache::thrift;
using namespace apache::thrift::protocol;
using namespace apache::thrift::transport;
using boost::shared_ptr;
int main(int argc, char **argv)
{
boost::shared_ptr<TSocket> socket(new TSocket("localhost", 9090));
boost::shared_ptr<TTransport> transport(new TBufferedTransport(socket));
boost::shared_ptr<TProtocol> protocol(new TBinaryProtocol(transport));
transport->open();
//調用server服務
Student s;
s.sno = 123;
s.sname = "hao973";
s.ssex = 1;
s.sage = 30;
ServClient client(protocol);
printf("sno=%d sname=%s ssex=%d sage=%d\n", s.sno, s.sname.c_str(), s.ssex, s.sage);
//put
client.put(s);
//icall scall
std::string strname = "";
client.scall(strname, s);
printf("icall=%d, scall=%s\n", client.icall(s), strname.c_str());
//stcall
client.stcall(stu, s);
printf("student sno=%d sname=%s ssex=%d sage=%d\n", stu.sno, stu.sname.c_str(), stu.ssex, stu.sage);
transport->close();
return 0;
}
同時修改服務端的代碼及文件Serv_server.skeleton.cpp中:
在Serv_server.skeleton.cpp文件中put函數中添加:
//add by self
printf(“sno=%d sname=%s ssex=%d sage=%d\n”, s.sno, s.sname.c_str(), s.ssex, s.sage);
// This autogenerated skeleton file illustrates how to build a server.
// You should copy it to another filename to avoid overwriting it.
#include "Serv.h"
#include <thrift/protocol/TBinaryProtocol.h>
#include <thrift/server/TSimpleServer.h>
#include <thrift/transport/TServerSocket.h>
#include <thrift/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;
class ServHandler : virtual public ServIf {
public:
ServHandler() {
// Your initialization goes here
}
void put(const Student& s) {
// Your implementation goes here
printf("put\n");
printf("sno=%d sname=%s ssex=%d sage=%d\n", s.sno, s.sname.c_str(), s.ssex, s.sage);
}
int32_t icall(const Student& s) {
// Your implementation goes here
printf("icall\n");
printf("sno=%d sname=%s ssex=%d sage=%d\n", s.sno, s.sname.c_str(), s.ssex, s.sage);
return s.sage;
}
void scall(std::string& _return, const Student& s) {
// Your implementation goes here
printf("scall\n");
printf("sno=%d sname=%s ssex=%d sage=%d\n", s.sno, s.sname.c_str(), s.ssex, s.sage);
_return = s.sname;
}
void stcall(Student& stu, const Student& s) {
// Your implementation goes here
printf("stcall\n");
printf("sno=%d sname=%s ssex=%d sage=%d\n", s.sno, s.sname.c_str(), s.ssex, s.sage);
stu.sno = s.sno + 1;
stu.sname = s.sname + "123";
stu.ssex = s.ssex;
stu.sage = s.sage + 10;
}
};
int main(int argc, char **argv) {
int port = 9090;
shared_ptr<ServHandler> handler(new ServHandler());
shared_ptr<TProcessor> processor(new ServProcessor(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;
}
2 編譯鏈接:
編譯程序命令:
//服務器
g++ -g -Wall -I./ -I/usr/local/include/thrift Serv.cpp student_types.cpp student_constants.cpp Serv_server.skeleton.cpp -L/usr/local/lib/*.so -lthrift -o server
//客戶端
g++ -g -Wall -I./ -I/usr/local/include/thrift Serv.cpp student_types.cpp student_constants.cpp Client.cpp -L/usr/local/lib/*.so -lthrift -o client
注意:
在自己的環境下要是把-L/usr/local/lib/.so -lthrift
放在 .cpp 和 .o文件前面會出現鏈接錯誤。部分錯誤如下:
/tmp/ccvtijvB.o:在函數‘ServClient::recv_put()’中:
/root/test/thrift/gen-cpp/Serv.cpp:197:對‘apache::thrift::TApplicationException::read(apache::thrift::protocol::TProtocol*)’未定義的引用
/tmp/ccvtijvB.o:在函數‘ServProcessor::dispatchCall(apache::thrift::protocol::TProtocol*, apache::thrift::protocol::TProtocol*, std::__cxx11::basic_string
CC=g++ -g -Wall
CFLAGS = -I. -I/usr/local/include/thrift
LFLAGS = -L/usr/local/lib
LDEXEFLAGS = -lthrift
OBJS = Serv.o \
student_types.o \
student_constants.o
all:client server
Serv.o: Serv.cpp
$(CC) $(CFLAGS) -c $^ -o $@
student_types.o: student_types.cpp
$(CC) $(CFLAGS) -c $^ -o $@
student_constants.o: student_constants.cpp
$(CC) $(CFLAGS) -c $^ -o $@
Serv_server.skeleton.o: Serv_server.skeleton.cpp
$(CC) $(CFLAGS) -c $^ -o $@
Client.o: Client.cpp
$(CC) $(CFLAGS) -c $^ -o $@
server: $(OBJS) Serv_server.skeleton.o
$(CC) $(LFLAGS) $(OBJS) Serv_server.skeleton.o $(LDEXEFLAGS) -o $@
client: $(OBJS) Client.o
$(CC) $(LFLAGS) $(OBJS) Client.o $(LDEXEFLAGS) -o $@
clean:
rm -f ./*.o client server
3 運行結果:
先啓動server.
再運行client.
server輸出:
# ./server
put
sno=123 sname=hao973 ssex=1 sage=30
scall
sno=123 sname=hao973 ssex=1 sage=30
icall
sno=123 sname=hao973 ssex=1 sage=30
stcall
sno=123 sname=hao973 ssex=1 sage=30
client執行結果:
# ./client
sno=123 sname=hao973 ssex=1 sage=30
icall=30, scall=hao973
student sno=124 sname=hao973123 ssex=1 sage=40