学生管理系统--网络版

这里都是基于Windows的网络编程

这里用的方法是执行一个操作连接一次，然后操作完之后，客户端和服务器就断开连接了，进行下一步操作就得继续连接。

客户端

student.h

#pragma  once;
#include <string>
#include <iostream>using namespace std;class Student
{
public:void setStudent(int n, string nam, double s);void showStudent();friend class Teacher;private:int num;char name[32];double score;
};

teacher.h

#pragma once
#include <string>
#include <iostream>
#include "student.h"using namespace std;const int upNum = 1000;class Teacher
{
public:Teacher();virtual    ~Teacher();void work();void displayStudent();void insert();void deleteStudent();void searchStudent();void saveStudent();
private:int N;//用户数目Student students[upNum];//student()
};class StudentOperation
{
public:int type;Student student;
};class StudentResult
{
public:int type;int result;int memo;
};int pass();
int chooseInMenu();
int inputPassword();

main.cpp

#include <iostream>
#include <WinSock2.h>
#include "teacher.h"
#pragma comment(lib, "ws2_32.lib")using namespace std;int main()
{cout << "*************************************" << endl;cout << "*         学生成绩管理系统          *" << endl;cout << "*************************************" << endl;Teacher t;t.work();system("pause");return 0;
}

work.cpp

#include "student.h"
#include "teacher.h"
#include <iostream>
#include <fstream>
#include <WinSock2.h>//student funcation
void Student::showStudent()
{cout << num << "          " << name << "        " << endl;
}//teacher funcation
Teacher::Teacher()
{}Teacher::~Teacher()
{
}void Teacher::work()
{int ichoice;int j = 0;while (1){ichoice = chooseInMenu();switch(ichoice){case 1: insert(); break;case 2: deleteStudent(); break;case 3: searchStudent(); break;case 4: displayStudent(); break;case 0: { system("pause");exit(1);}default:  break;}}
}void Teacher::insert()
{StudentOperation stuop;stuop.type = 1;cout << "请输入学号: ";cin >> stuop.student.num;cout << endl;cout << "请输入名字: ";cin >> stuop.student.name;cout << endl;cout << "请输入操作系统成绩: ";cin >> stuop.student.score;WSADATA wsaData;int ret = WSAStartup(MAKEWORD(2,2), &wsaData);if(ret != 0){cout << "win初始化失败" << endl;system("pause");exit(1);}SOCKET clientsocket;clientsocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(clientsocket == INVALID_SOCKET){cout << "创建winsocket失败" << endl;system("pause");exit(1);}struct sockaddr_in serveraddr;serveraddr.sin_family = AF_INET;serveraddr.sin_addr.s_addr = inet_addr("127.0.0.1");serveraddr.sin_port = htons(6800);ret = connect(clientsocket, (struct sockaddr*)&serveraddr, sizeof(serveraddr));if(ret ==  SOCKET_ERROR){cout << "连接失败" << endl;system("pause");exit(1);}char * data = (char *)&stuop;int len = send(clientsocket, data, sizeof(stuop), 0);if (len == SOCKET_ERROR){cout << "发送失败" << endl;system("pause");exit(1);}StudentResult sr;len = recv(clientsocket, (char *)&sr, sizeof(sr), 0);if(len == SOCKET_ERROR){cout << "接收失败" << endl;system("pause");exit(1);}//cout << sr.result << endl;closesocket(clientsocket);WSACleanup();
}void Teacher::deleteStudent()
{StudentOperation stuop;stuop.type = 2;cout << "请输入学号：";cin >> stuop.student.num;cout << endl;WSADATA wsaData;int ret = WSAStartup(MAKEWORD(2,2), &wsaData);if(ret != 0){cout << "win初始化失败" << endl;system("pause");exit(1);}SOCKET clientsocket;clientsocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(clientsocket == INVALID_SOCKET){cout << "创建winsocket失败" << endl;system("pause");exit(1);}struct sockaddr_in serveraddr;serveraddr.sin_family = AF_INET;serveraddr.sin_addr.s_addr = inet_addr("127.0.0.1");serveraddr.sin_port = htons(6800);ret = connect(clientsocket, (struct sockaddr*)&serveraddr, sizeof(serveraddr));if(ret ==  SOCKET_ERROR){cout << "连接失败" << endl;system("pause");exit(1);}char * data = (char *)&stuop;int len = send(clientsocket, data, sizeof(stuop), 0);if(len == SOCKET_ERROR){cout << "发送失败" << endl;system("pause");exit(1);}StudentResult st;len = recv(clientsocket, (char *)&st, sizeof(st), 0);if(len == SOCKET_ERROR){cout << "接收失败" << endl;system("pause");exit(1);}//cout << st.result << endl;closesocket(clientsocket);WSACleanup();
}void Teacher::searchStudent(){StudentOperation stuop;stuop.type = 3;cout << "请输入要修改的同学的学号：";cin >> stuop.student.num;WSADATA wsaData;int ret = WSAStartup(MAKEWORD(2,2), &wsaData);if(ret != 0){cout << "win初始化失败" << endl;system("pause");exit(1);}SOCKET clientsocket;clientsocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(clientsocket == INVALID_SOCKET){cout << "创建winsocket失败" << endl;system("pause");exit(1);}struct sockaddr_in serveraddr;serveraddr.sin_family = AF_INET;serveraddr.sin_addr.s_addr = inet_addr("127.0.0.1");serveraddr.sin_port = htons(6800);ret = connect(clientsocket, (struct sockaddr*)&serveraddr, sizeof(serveraddr));if(ret ==  SOCKET_ERROR){cout << "连接失败" << endl;system("pause");exit(1);}char * data = (char *)&stuop;ret = send(clientsocket, data, sizeof(stuop), 0);if(ret == SOCKET_ERROR){cout << "发送失败" << endl;system("pause");exit(1);}StudentResult st;ret = recv(clientsocket, (char *)&st, sizeof(st), 0);if(ret == SOCKET_ERROR){cout << "接收失败" << endl;system("pause");exit(1);}// cout << st.result << endl;closesocket(clientsocket);WSACleanup();cout << "请输入你要修改的成绩: ";cin >> stuop.student.score;ret = WSAStartup(MAKEWORD(2,2), &wsaData);if(ret != 0){cout << "win初始化失败" << endl;system("pause");exit(1);}clientsocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(clientsocket == INVALID_SOCKET){cout << "创建winsocket失败" << endl;system("pause");exit(1);}serveraddr;serveraddr.sin_family = AF_INET;serveraddr.sin_addr.s_addr = inet_addr("127.0.0.1");serveraddr.sin_port = htons(6800);ret = connect(clientsocket, (struct sockaddr*)&serveraddr, sizeof(serveraddr));if(ret ==  SOCKET_ERROR){cout << "连接失败" << endl;system("pause");exit(1);}ret = send(clientsocket, data, sizeof(stuop), 0);if(ret == SOCKET_ERROR){cout << "发送失败" << endl;system("pause");exit(1);}StudentResult sr;ret = recv(clientsocket, (char *)&sr, sizeof(sr), 0);if(ret == SOCKET_ERROR){cout << "接收失败" << endl;system("pause");exit(1);}else{cout << "修改信息成功" << endl;}closesocket(clientsocket);WSACleanup();}void Teacher::displayStudent(){StudentOperation stuop;stuop.type = 4;WSADATA wsaData;int ret = WSAStartup(MAKEWORD(2,2), &wsaData);if(ret != 0){cout << "win初始化失败" << endl;system("pause");exit(1);}SOCKET clientsocket;clientsocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(clientsocket == INVALID_SOCKET){cout << "创建winsocket失败" << endl;system("pause");exit(1);}struct sockaddr_in serveraddr;serveraddr.sin_family = AF_INET;serveraddr.sin_addr.s_addr = inet_addr("127.0.0.1");serveraddr.sin_port = htons(6800);ret = connect(clientsocket, (struct sockaddr*)&serveraddr, sizeof(serveraddr));if(ret ==  SOCKET_ERROR){cout << "连接失败" << endl;system("pause");exit(1);}char *data = (char *)&stuop;ret = send(clientsocket, data, sizeof(stuop),0);if(ret ==  SOCKET_ERROR){cout << "发送失败" << endl;system("pause");exit(1);}StudentResult st;ret = recv(clientsocket, (char *)&st, sizeof(st), 0);if(ret == SOCKET_ERROR){cout << "接收失败" << endl;system("pause");exit(1);}//cout << st.result << endl;closesocket(clientsocket);WSACleanup();ret = WSAStartup(MAKEWORD(2,2), &wsaData);if(ret != 0){cout << "win初始化失败" << endl;system("pause");exit(1);}clientsocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(clientsocket == INVALID_SOCKET){cout << "创建winsocket失败" << endl;system("pause");exit(1);}serveraddr.sin_family = AF_INET;serveraddr.sin_addr.s_addr = inet_addr("127.0.0.1");serveraddr.sin_port = htons(6800);ret = connect(clientsocket, (struct sockaddr*)&serveraddr, sizeof(serveraddr));if(ret ==  SOCKET_ERROR){cout << "连接失败" << endl;system("pause");exit(1);}while (recv(clientsocket, (char*)&stuop, sizeof(stuop), 0)){cout << "number :" << stuop.student.num << ", name : " << stuop.student.name << ", score : " << stuop.student.score << endl;}closesocket(clientsocket);WSACleanup();}int chooseInMenu()
{int i;while (1){cout << endl;cout << "+------------------------------------+" << endl;cout << "+      1.插入信息        2.删除信息    +" << endl;cout << "+      3.修改信息        4.显示信息    +" << endl;cout << "+-------------------------------------+" << endl;cout << "+                       0.退出        +" << endl;cout << "+------------------------------------+" << endl;cout << "请输入操作指令：";cin >> i;if (i >= 0 && i <= 9)break;elsecout << "请重新输入" << endl;}return i;
}

服务器

student.h

#pragma once
#include <string>
#include <iostream>using namespace std;class Student
{
public:int num;char name[32];double score;
};

main.cpp

#include <iostream>
#include <WinSock2.h>
#include <fstream>
#include <vector>
#include <list>
#include "student.h"
#include "studentku.h"#pragma comment(lib, "ws2_32.lib")using namespace std;class StudentOperation
{
public:int type;Student student;
};class StudentResult
{
public:int type;int result;int memo;
};StudentOperation recvStudent();list<Student> stulist;
int main()
{vector<Student> stulist;while (true){try{StudentOperation op = recvStudent();if(op.type == 1){stulist.push_back(op.student);}else if(op.type == 2){cout << "删除学号为：" << op.student.num << endl;for(vector<Student>::iterator it = stulist.begin(); it != stulist.end(); it++){if(it->num == op.student.num){stulist.erase(it, it+1);break;}}}else if(op.type == 3){cout << "修改的学生的学号为：" << op.student.num << endl;vector<Student>::iterator it;for(it = stulist.begin(); it != stulist.end(); it++){if(it->num == op.student.num){break;}}WSADATA wsaData;StudentOperation op;op.type = 3;int ret;ret = WSAStartup(MAKEWORD(2,2), &wsaData);if(ret != 0){cout << "win初始化失败， 错误编号为" << ret << endl;break;}SOCKET serversocket;serversocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(serversocket == INVALID_SOCKET){cout << "winsock建立失败"  << WSAGetLastError() << endl;system("pause");break;}struct sockaddr_in serveraddr;serveraddr.sin_family = AF_INET;serveraddr.sin_addr.s_addr = inet_addr("127.0.0.1");serveraddr.sin_port = htons(6800);ret = bind(serversocket, (struct sockaddr*)&serveraddr, sizeof(serveraddr));if(ret == SOCKET_ERROR){cout << "绑定失败" << WSAGetLastError() << endl;system("pause");break;}ret = listen(serversocket, 5);if(ret == SOCKET_ERROR){cout << "监听失败" << WSAGetLastError() << endl;system("pause");break;}struct sockaddr_in clientaddr;int length = sizeof(clientaddr);SOCKET acceptsocket = accept(serversocket, (struct sockaddr*)&clientaddr, &length);if(acceptsocket == INVALID_SOCKET){cout << "接受失败" << WSAGetLastError() << endl;system("pause");break;}int count = recv(acceptsocket, (char *)&op, sizeof(op), 0);if(count == SOCKET_ERROR){cout << "接收失败" << endl;system("pause");break;}StudentResult sr;char *data =(char *)&sr;it->score = op.student.score;sr.result = 0;count = send(acceptsocket, data, sizeof(sr), 0);if(count == SOCKET_ERROR){cout << "发送失败" << endl;system("pause");break;}closesocket(serversocket);closesocket(acceptsocket);WSACleanup();}else if(op.type == 4){WSADATA wsaData;StudentOperation op;op.type = 4;int ret;ret = WSAStartup(MAKEWORD(2,2), &wsaData);if(ret != 0){cout << "win初始化失败， 错误编号为" << ret << endl;break;}SOCKET serversocket;serversocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(serversocket == INVALID_SOCKET){cout << "winsock建立失败"  << WSAGetLastError() << endl;system("pause");break;}struct sockaddr_in serveraddr;serveraddr.sin_family = AF_INET;serveraddr.sin_addr.s_addr = inet_addr("127.0.0.1");serveraddr.sin_port = htons(6800);ret = bind(serversocket, (struct sockaddr*)&serveraddr, sizeof(serveraddr));if(ret == SOCKET_ERROR){cout << "绑定失败" << WSAGetLastError() << endl;system("pause");break;}ret = listen(serversocket, 5);if(ret == SOCKET_ERROR){cout << "监听失败" << WSAGetLastError() << endl;system("pause");break;}struct sockaddr_in clientaddr;int length = sizeof(clientaddr);SOCKET acceptsocket = accept(serversocket, (struct sockaddr*)&clientaddr, &length);if(acceptsocket == INVALID_SOCKET){cout << "接受失败" << WSAGetLastError() << endl;system("pause");break;}vector<Student>::iterator it;for(it = stulist.begin(); it != stulist.end(); it++){strcpy(op.student.name, it->name);op.student.num = it->num;op.student.score = it->score;ret = send(acceptsocket, (char *)&op, sizeof(op), 0);if(ret == SOCKET_ERROR){cout << "发送失败" << endl;system("pause");break;}}closesocket(serversocket);closesocket(acceptsocket);WSACleanup();}if(op.type != 4){fstream fs("i:\\code\\teachernet.txt", ios::out);for(vector<Student>::iterator it = stulist.begin(); it != stulist.end(); it++){fs << it->num << "\t" << it->name << "\t" << it->score << endl;}fs.close();}}catch(...){cout << "error" << endl;system("pause");return -1;}}system("pause");return 0;
}StudentOperation recvStudent()
{WSADATA wsaData;StudentOperation op;op.type = 1;int ret;ret = WSAStartup(MAKEWORD(2,2), &wsaData);if(ret != 0){cout << "win初始化失败， 错误编号为" << ret << endl;return op;}SOCKET serversocket;serversocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(serversocket == INVALID_SOCKET){cout << "winsock建立失败"  << WSAGetLastError() << endl;system("pause");return op;}struct sockaddr_in serveraddr;serveraddr.sin_family = AF_INET;serveraddr.sin_addr.s_addr = inet_addr("127.0.0.1");serveraddr.sin_port = htons(6800);ret = bind(serversocket, (struct sockaddr*)&serveraddr, sizeof(serveraddr));if(ret == SOCKET_ERROR){cout << "绑定失败" << WSAGetLastError() << endl;system("pause");return op;}ret = listen(serversocket, 5);if(ret == SOCKET_ERROR){cout << "监听失败" << WSAGetLastError() << endl;system("pause");return op;}struct sockaddr_in clientaddr;int length = sizeof(clientaddr);SOCKET acceptsocket = accept(serversocket, (struct sockaddr*)&clientaddr, &length);if(acceptsocket == INVALID_SOCKET){cout << "接受失败" << WSAGetLastError() << endl;system("pause");return op;}int count = recv(acceptsocket, (char *)&op, sizeof(op), 0);if(count == SOCKET_ERROR){cout << "接收失败" << endl;system("pause");return op;}StudentResult sr;sr.type = op.type;if(op.type < 1 || op.type > 4){sr.result = -1;}sr.result = 0;count = send(acceptsocket, (char *)&sr, sizeof(sr), 0);if(count == SOCKET_ERROR){cout << "发送失败" << endl;system("pause");return op;}closesocket(acceptsocket);closesocket(serversocket);return op;
}

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