基于sqlite超市管理系统

其他 2020-09-22 10:06:48 阅读次数: 0

client.h

#ifndef _CLIENT_H_
#define _CLIENT_H_
 
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
#define N 32   

#define R 1   //user - register
#define L 2   //user - login
#define Q 3   //user - query
#define H 4   //user - history
#define D 5   //user - distroy
#define F 6   //user - retrieve_passwor
#define S 7   //goods - select
#define T 8

//定义通信双方的信息结构体
typedef struct  messgae{
    
    
	int type;
	char name[16];
	char passwd[64];
	char number[12];
	int price;
	int num;

}MSG;
typedef struct {
    
    
	char name[32];
	char num[16];
	char price[16];
}GOODS;

void do_register(int sockfd,MSG *msg);
void do_distroy(int sockfd,MSG *msg);
int do_select(int sockfd,MSG *msg,GOODS *good);
int do_login(int sockfd,MSG *msg);
int get_date(char *date);
int shopping(int sockfd,MSG *msg);
int do_retrieve_passwor(int sockfd,MSG *msg);
int do_history(int sockfd,MSG *msg);
int do_tuidan(int sockfd,MSG *msg);
#endif

client.c

#include "client.h"

void do_register(int sockfd,MSG *msg)
{
    
    
	msg->type = R;

	printf("请输入帐号:");
	scanf("%s",msg->name);
	getchar();
	printf("请输入密码:");
	scanf("%s",msg->passwd);
	getchar();
	printf("请输入手机号:");
	scanf("%s",msg->number);
	getchar();
	if(send(sockfd,msg,sizeof(MSG),0) < 0)
	{
    
    
		printf("fail to send.\n");
		return;
	}

	if(recv(sockfd,msg,sizeof(MSG),0) < 0)
	{
    
    
		printf("fail to recv.\n");
		return ;
	}
	
	printf("%s\n",msg->passwd);
	return;
}

void do_distroy(int sockfd,MSG *msg)    //注销
{
    
    
	msg->type = D;

	printf("请输入帐号:");
	scanf("%s",msg->name);
	getchar();
	printf("请输入密码:");
	scanf("%s",msg->passwd);

	if(send(sockfd,msg,sizeof(MSG),0) < 0)
	{
    
    
		printf("fail to send.\n");
		return ;
	}

	if(recv(sockfd,msg,sizeof(MSG),0) < 0)
	{
    
    
		printf("fail to recv.\n");
		return ;
	}

	if(strcmp(msg->passwd,"注销成功!")==0)
	{
    
    
		printf("注销成功!\n");
		return ; 
	}
	else
	{
    
    
		printf("%s\n",msg->passwd);
	}
}

int do_select(int sockfd,MSG *msg,GOODS *good)
{
    
    
	msg->type=S;

	int i;
	char buf[45];

    if(send(sockfd,msg,sizeof(MSG),0)<0)
    {
    
       
        printf("fail to send\n");
        return -1;
    }   
   
	printf("\033[44;1m****************货物清单*****************\033[0m\n");
	printf("****货物名称****货物数量****货物单价*****\n");
	for(i = 0;i <= 6;i++)	
	{
    
    
		bzero(buf,45);
		recv(sockfd,buf,45,0);
		printf("%s  ****\n",buf);
	}
	printf("**1.购货**2.退货**3.查询**4.退出**5.返回*\n");
	printf("\033[44;1m*****************************************\033[0m\n");
	printf("Please choose:");
}


int do_login(int sockfd,MSG *msg)
{
    
    
	msg->type = L;

	printf("请输入帐号:");
	scanf("%s",msg->name);
	getchar();
	printf("请输入密码:");
	scanf("%s",msg->passwd);

	if(send(sockfd,msg,sizeof(MSG),0) < 0)
	{
    
    
		printf("fail to send.\n");
		return -1;
	}

	if(recv(sockfd,msg,sizeof(MSG),0) < 0)
	{
    
    
		printf("fail to recv.\n");
		return -1;
	}
	
	if(strncmp(msg->passwd,"OK",2) == 0)
	{
    
    
		printf("登录成功!\n");
		return 1;
	}
	else
	{
    
    
		printf("%s\n",msg->passwd);
	}
	return 0;
}






int shopping(int sockfd,MSG *msg)
{
    
    
	msg->type = Q;

	char goodname[32];
	char date[64];
	int price1,price;
	int neednum,havenum;

	printf("请输入你要购买的货物名称:");
	scanf("%s",goodname);
	strcpy(msg->passwd,goodname);
	send(sockfd,msg,sizeof(MSG),0);
	printf("send success : %s\n",goodname);
	if(recv(sockfd,msg,sizeof(MSG),0) < 0)
	{
    
    
		printf("fail to recv!\n");
		return -1;
	}
	havenum = msg->num;

	printf("请输入购买数量：");
	scanf("%d",&msg->num);
	neednum = msg->num;
	send(sockfd,msg,sizeof(MSG),0);

	if(havenum <= 0)
	{
    
    
		printf("货物已售罄!\n");
		return -1;
	}

	if(neednum <= havenum)
	{
    
    
		recv(sockfd,msg,sizeof(MSG),0);
		printf("您应付%d元\n",msg->price * neednum);
		printf("请付钱(本店不支持找零!)：");
		scanf("%d",&price);
		if(price < msg->price * neednum)
		{
    
    
			printf("请再付%d元!\n",msg->price*neednum - price);
			printf("请继续付钱:");
			scanf("%d",&price1);
			printf("欢迎下次光临!\n");
			return 1;
		}
		printf("欢迎下次光临！\n");
	}
	else
	{
    
    
		printf("库存不足!\n");
		return -1;
	}

	return 0;
}
int do_tuidan(int sockfd,MSG *msg)
{
    
    	
	msg->type = T;
	
	char buf[64];
	printf("请输入你要退的货物名称:");
	scanf("%s",msg->name);
	printf("请输入你要退货的数量:");
	scanf("%d",&msg->num);
	send(sockfd,msg,sizeof(MSG),0);

	recv(sockfd,buf,sizeof(buf),0);
	printf("%s\n",buf);
}

int do_retrieve_passwor(int sockfd,MSG *msg)
{
    
    
    msg->type=F;

    printf("请输入需要找回密码的账号:");
    scanf("%s",msg->name);
    getchar();
    printf("请输入注册手机号码:");
    scanf("%s",msg->number);
    getchar();
    if(send(sockfd,msg,sizeof(MSG),0)<0)
    {
    
       
        printf("fail to send\n");
        return -1;
    }   
    if(recv(sockfd,msg,sizeof(MSG),0)<0)
    {
    
       
        printf("fail to recv\n");
        return -1;
    }
    printf("验证消息:%s \n",msg->passwd);
    return 0;
}

int do_history(int sockfd,MSG *msg)
{
    
    
	msg->type=H;

	int i;
	char buf[256];

    if(send(sockfd,msg,sizeof(MSG),0)<0)
    {
    
       
        printf("fail to send\n");
        return -1;
    }   
   
	while(1)
	{
    
    
		bzero(buf,256);
		recv(sockfd,buf,256,0);
		if(buf[0] == '\0')
			break;
		printf("%s\n",buf);
	}
}

main.c

#include "client.h"

int main(int argc, char *argv[])
{
    
    
	int sockfd,n;
	struct sockaddr_in serveraddr;
	MSG msg;
	GOODS good;

	if(argc != 3)
	{
    
    
		printf("Usagr:%s serverip port.\n",argv[0]);
		return -1;
	}
	
	if((sockfd = socket(AF_INET,SOCK_STREAM,0)) < 0)
	{
    
    
		perror("socket");
		exit(1);
	}

	bzero(&serveraddr,sizeof(serveraddr));
	serveraddr.sin_family = AF_INET;
	serveraddr.sin_addr.s_addr = inet_addr(argv[1]);
	serveraddr.sin_port = htons(atoi(argv[2]));

	if(connect(sockfd,(struct sockaddr *)&serveraddr,sizeof(serveraddr)) < 0)
	{
    
    
		perror("connect");
		exit(1);
	}
	

rt:
	while(1)
	{
    
    
		int ret;

		printf("\033[44;1m**************壮壮哥线上烟酒超市************\033[0m\n");
		printf("** 1.注册 2.登录 3.退出 4.找回密码 5.注销 **\n");
		printf("\033[44;1m********************************************\033[0m\n");
		scanf("%d",&n);
		getchar();

		switch(n)
		{
    
    
			case 1:
				do_register(sockfd,&msg);
				break;
			case 2:
				if((ret = do_login(sockfd,&msg)) == 1)
				{
    
    	
					goto next;
					break;
				}
				break;
			case 3:
				close(sockfd);
				exit(0);
				break;
			case 5:
				do_distroy(sockfd,&msg);
				break;
			case 4:
				do_retrieve_passwor(sockfd,&msg);
				break;
			default:
				printf("Invalid data cmd.\n");
		}
	}

next:
	while(1)
	{
    
    
		do_select(sockfd,&msg,&good);
		scanf("%d",&n);
		getchar();
		switch(n)
		{
    
    
			case 1:shopping(sockfd,&msg);
				break;
			case 3:
				do_history(sockfd,&msg);
				break;
			case 4:
				close(sockfd);
				exit(0);
				break;
			case 5:
				goto rt;
				break;
			case 2:
				do_tuidan(sockfd,&msg);
				break;
			default:
				printf("Invalid data cmd.\n");
		}
	}

    return 0;
}

server.h

#ifndef _SERVER_H_
#define _SERVER_H_

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <string.h>
#include <unistd.h>
#include <sqlite3.h>
#include <signal.h>
#include <time.h>
#define N 32   

#define R 1   //user - register
#define L 2   //user - login
#define Q 3   //user - query
#define H 4   //user - history
#define D 5   //user - distroy
#define F 6   //user - retrieve_password
#define S 7   //goods - select
#define T 8  

#define DATABASE "store.db"
//定义通信双方的信息结构体
typedef struct {
    
    
	int type;
	char name[16];
	char passwd[64];
	char number[12];
	int price ;
	int num;
}MSG;
typedef struct {
    
    
	char name[32];
	char num[16];
	char price[16];
}GOODS;
int do_client(int acceptfd,sqlite3 *db);
void do_register(int acceptfd,MSG *msg,sqlite3 *db);
int do_destroy(int acceptfd,MSG *msg,sqlite3 *db);
int do_login(int acceptfd,MSG *msg,sqlite3 *db);
int do_query(int acceptfd,MSG *msg,sqlite3 *db);
int do_history(int acceptfd,MSG *msg,sqlite3 *db);
int get_date(char *date);
int do_retrieve_passwor(int acceptfd,MSG *msg,sqlite3 *db);
void do_select(int acceptfd,MSG *msg,GOODS *good,sqlite3 *db);
int do_tuidan(int acceptfd,MSG *msg,sqlite3 *db);
#endif

server.c

#include "server.h"

void do_select(int acceptfd,MSG *msg,GOODS *good,sqlite3 *db)
{
    
    
	char buf[45];
	char *errmsg;
    char **resultp;
    char sql[128];	
    int nrow,ncloum,j;
    char number[12] = {
    
    0};

    sprintf(sql,"select * from goods; ");
    printf("%s\n",sql);
    if(sqlite3_get_table(db,sql,&resultp,&nrow,&ncloum,&errmsg) != SQLITE_OK)
    {
    
      
        printf("%s\n",errmsg);
        return ; 
    }           

    else 
    {
    
      
		printf("%d %d  %s\n",nrow,ncloum,resultp[0]);
        printf("get table ok!\n");
		for(int j=1;j<=nrow;j++)
		{
    
    		
			bzero(buf,45);
			sprintf(buf,"****%8s   *** %2s *** ￥%5s ***",resultp[3*j+0],resultp[3*j+1],resultp[j*3+2]);
			printf("%s \n",buf);
			send(acceptfd,buf,45,0);
			usleep(10);
		}
	}
}



int do_client(int acceptfd,sqlite3 *db)
{
    
    
	MSG msg;
	GOODS good;
	char data[64];
	char goods[128];
	while(recv(acceptfd,&msg,sizeof(msg),0) > 0)
	{
    
    
		printf("type: %d\n",msg.type);
		switch(msg.type)
		{
    
    
			case R:
				do_register(acceptfd,&msg,db);
				break;
			case L:
				do_login(acceptfd,&msg,db);
				break;
			case Q:
				do_query(acceptfd,&msg,db);
				break;
			case H:
				do_history(acceptfd,&msg,db);
				break;
			case D:
				do_destroy(acceptfd,&msg,db);
				break;
			case F:
				do_retrieve_passwor(acceptfd,&msg,db);
				break;
			case S:
				do_select(acceptfd,&msg,&good,db);
				break;
			case T:
				do_tuidan(acceptfd,&msg,db);
				break;
			default:
				printf("Invalid msg.\n");
		}
	}
	
	printf("client exit.\n");
	close(acceptfd);

	return 0;
}



void do_register(int acceptfd,MSG *msg,sqlite3 *db)
{
    
    
	char *errmsg;
	char sql[128];
	sprintf(sql,"insert into user values('%s','%s','%s');",msg->name,msg->passwd,msg->number);
	printf("%s\n",sql);
	if(sqlite3_exec(db,sql,NULL,NULL,&errmsg) != SQLITE_OK)
	{
    
    
		printf("%s\n",errmsg);
		strcpy(msg->passwd,"帐号已存在.");
	}
	else
	{
    
    
		printf("注册成功!\n");
		strcpy(msg->passwd,"ok!");
	}
	if(send(acceptfd,msg,sizeof(MSG),0) < 0)
	{
    
    
		printf("fail to send.\n");
		return;
	}
}



int do_destroy(int acceptfd,MSG *msg,sqlite3 *db)
{
    
    
	char *errmsg;
	char sql[128];
	int nrow,ncloumn;
	char **resultp;

	sprintf(sql,"select * from user where name = '%s' and passwd = '%s';",msg->name,msg->passwd);
	printf("%s\n",sql);
	if(sqlite3_get_table(db,sql,&resultp,&nrow,&ncloumn,&errmsg) != SQLITE_OK)
	{
    
    
		printf("%s\n",errmsg);
		return -1;
	}

	else
	{
    
    
		printf("get_table ok.\n");
	}

	if(nrow == 0 ) 
	{
    
    
		strcpy(msg->passwd,"用户或密码错误!");
		send(acceptfd,msg,sizeof(MSG),0);
		printf("detele fail 1\n");
	}
	if(nrow == 1)
	{
    
    
		sprintf(sql,"delete from user where name='%s'and passwd = '%s';",msg->name,msg->passwd);
	 	printf("%s\n",sql);
  		if(sqlite3_exec(db,sql,NULL,NULL,&errmsg) != SQLITE_OK)
		{
    
    
			printf("%s\n",errmsg);
			printf("detele fail2\n");
			return -1;
		}
	    else
		{
    
    
			printf("client detele ok!\n");
			strcpy(msg->passwd,"注销成功!");
			send(acceptfd,msg,sizeof(MSG),0);
			return -1;
		}
	}
}

int do_tuidan(int acceptfd,MSG *msg,sqlite3 *db)
{
    
    
	char *errmsg,**resultp;
	int nrow,ncloumn;
	char date[128];
	char sql[128],sql1[128],sql2[128];
	int num;
	printf("%s %d\n",msg->name,msg->num);
	sprintf(sql,"select num from goods where name = '%s';",msg->name);
	printf("%s\n",sql);
	if(sqlite3_get_table(db,sql,&resultp,&nrow,&ncloumn,&errmsg) != SQLITE_OK)
	{
    
    
		printf("%s\n",errmsg);
		return -1;
	}
	printf("现有库存为:%d\n",atoi(resultp[1]));
	num = atoi(resultp[1]);
	printf("num %d\n",msg->num + num);
	printf("name %s\n",msg->name);
	sprintf(sql1,"update goods set num = %d where name = '%s';",msg->num + num,msg->name);
	printf("sql = %s\n",sql);
	if(sqlite3_exec(db,sql1,NULL,NULL,&errmsg) != SQLITE_OK)
	{
    
    
		printf("%s\n",errmsg);
		return -1;
	}
	printf("update success!\n");
	send(acceptfd,"退货成功!",20,0);

	get_date(date);

	sprintf(sql2,"insert into record values('%s','+%d','%s');",msg->name,msg->num,date);
	if(sqlite3_exec(db,sql2,NULL,NULL,&errmsg) != SQLITE_OK)
	{
    
    
		printf("%s\n",errmsg);
		return -1;
	}
	printf("insert record down!\n");

	return 0;
}

int do_login(int acceptfd,MSG *msg,sqlite3 *db)
{
    
    
	char *errmsg;
	char sql[128];
	char **resultp;
	int nrow,ncloumn;

	sprintf(sql,"select * from user where name = '%s' and passwd = '%s';",msg->name,msg->passwd);
	printf("%s\n",sql);
	if(sqlite3_get_table(db,sql,&resultp,&nrow,&ncloumn,&errmsg) != SQLITE_OK)
	{
    
    
		printf("%s\n",errmsg);
		return -1;
	}
	else
	{
    
    
		printf("get_table ok.\n");
	}

	//查询成功，数据库中拥有此用户
	if(nrow == 1)
	{
    
    
		strcpy(msg->passwd,"OK");
		send(acceptfd,msg,sizeof(MSG),0);
		return 1;
	}
	if(nrow == 0)//密码或用户名错误
	{
    
    
		strcpy(msg->passwd,"usr or password wrong!");
		send(acceptfd,msg,sizeof(MSG),0);
	}
	return 0;
}


int do_retrieve_passwor(int acceptfd,MSG *msg,sqlite3 *db )
{
    
    
    char *errmsg;
    char **resultp;
    char sql[128];
    int nrow,ncloum;
    char number[12] = {
    
    0};

    sprintf(sql,"select * from user where name = '%s' and number= '%s';",msg->name,msg->number);
    printf("%s\n",sql);
    if(sqlite3_get_table(db,sql,&resultp,&nrow,&ncloum,&errmsg) != SQLITE_OK)
    {
    
    
        printf("%s\n",errmsg);
        return -1;
    }       
    else 
    {
    
       
        printf("get table ok!\n");

    }//验证成功
     if(nrow == 1)
     {
    
       
         sprintf(sql,"select * from user where name='%s';",msg->name);   
         if(sqlite3_get_table(db,sql,&resultp,&nrow,&ncloum,&errmsg) != SQLITE_OK)
         {
    
    
             printf("%s\n",errmsg);                                                             
            return -1;                       
         }      

		else 
        {
    
       
         printf("%s",resultp[4]);
         strcpy(msg->passwd,resultp[4]);
         send(acceptfd,msg,sizeof(MSG),0);
         return 1;
    	 }
     }
     if(nrow == 0)//验证失败
     {
    
    
         strcpy(msg->passwd,"用户验证失败!");
         send(acceptfd,msg,sizeof(MSG),0);
     }

	return 0;    
}

int get_date(char *date)
{
    
    
	time_t t;
	time(&t);
	struct tm *tp;

	//进行时间的格式转换
	tp = localtime(&t);

	sprintf(date,"%d-%d-%d %d:%d:%d",tp->tm_year + 1900,tp->tm_mon + 1,tp->tm_mday,tp->tm_hour,tp->tm_min,tp->tm_sec);
	return 0;
}

int do_query(int acceptfd,MSG *msg,sqlite3 *db)
{
    
    
	char *errmsg;
	char date[128];
	char sql[128],sql2[128],sql3[128];
	char name[64];
	char **resultp,**resultp1;
	int nrow,ncloumn;
	int currentnum,neednum;

	printf("%s\n",msg->passwd);
	sprintf(sql,"select num from goods where name = '%s';",msg->passwd);
	strcpy(name,msg->passwd);
	printf("name = %s\n",name);
	printf("%s\n",sql);
	if(sqlite3_get_table(db,sql,&resultp,&nrow,&ncloumn,&errmsg) != SQLITE_OK)
	{
    
    
		printf("%s\n",errmsg);
		return -1;
	}
	if(nrow == 1)
	{
    
    
		printf("现有库存为:%d\n",atoi(resultp[1]));
		msg->num = atoi(resultp[1]);
		send(acceptfd,msg,sizeof(MSG),0);
	}
	else
	{
    
    
		strcpy(msg->passwd,"没货");
		send(acceptfd,msg,sizeof(MSG),0);
	}

	currentnum = msg->num;   //num为当前按库存;
	recv(acceptfd,msg,sizeof(MSG),0);
	neednum = msg->num;


	printf("neednum = %d\n",msg->num);
	sprintf(sql2,"select price from goods where name = '%s';",name);
	if(sqlite3_get_table(db,sql2,&resultp1,&nrow,&ncloumn,&errmsg) != SQLITE_OK)
	{
    
    
		printf("%s\n",errmsg);
		return -1;
	}
	printf("price  = %s\n",resultp1[1]);
	msg->price= atoi(resultp1[1]) ;
	send(acceptfd,msg,sizeof(MSG),0);
	if(currentnum >= neednum)
	{
    
    
		char buf[128];
		sprintf(buf,"update goods set num = %d where name = '%s';",currentnum - neednum,msg->passwd);
		printf("%s\n",buf);
		if(sqlite3_exec(db,buf,NULL,NULL,&errmsg) != SQLITE_OK)
		{
    
    
			printf("%s\n",errmsg);
			return -1;
		}
		printf("update success!\n");
		get_date(date);
		
		sprintf(sql3,"insert into record values('%s','-%d','%s');",name,neednum ,date);
		if(sqlite3_exec(db,sql3,NULL,NULL,&errmsg) != SQLITE_OK)
		{
    
    
			printf("%s\n",errmsg);
		}
	}

	return 0;
}


int do_history(int acceptfd,MSG *msg,sqlite3 *db)
{
    
    
	char buf[256];
	char *errmsg;
    char **resultp;
    char sql[128];	
    int nrow,ncloum,j;

    sprintf(sql,"select * from record;");
    printf("%s\n",sql);
    if(sqlite3_get_table(db,sql,&resultp,&nrow,&ncloum,&errmsg) != SQLITE_OK)
    {
    
      
        printf("%s\n",errmsg);
        return -1; 
    }           

    else 
    {
    
      
		printf("%5d %2d  %10s\n",nrow,ncloum,resultp[0]);
        printf("get table ok!\n");
		for(int j=0;j<=nrow;j++)
		{
    
    		
			bzero(buf,256);
			sprintf(buf,"%7s  %2s  %10s",resultp[3*j+0],resultp[3*j+1],resultp[j*3+2]);
			printf("%s \n",buf);
			send(acceptfd,buf,256,0);
		//	usleep(10);
		}
		buf[0] = '\0';
		send(acceptfd,buf,256,0);
	}
	return 0;
}

main.c

#include "server.h"

int main(int argc, char *argv[])
{
    
    
	char *data;
	int sockfd,n,acceptfd;
	struct sockaddr_in serveraddr;
	MSG msg;
	sqlite3 *db;
	char *errmsg;
	pid_t pid;

	if(argc != 3)
	{
    
    
		printf("Usagr:%s serverip port.\n",argv[0]);
		return -1;
	}
	
	//打开数据库
	if(sqlite3_open(DATABASE,&db) != SQLITE_OK)
	{
    
    
		printf("%s\n",sqlite3_errmsg(db));
		return -1;
	}
	else
	{
    
    
		printf("open DATABASE success.\n");
	}


	if((sockfd = socket(AF_INET,SOCK_STREAM,0)) < 0)
	{
    
    
		perror("socket");
		exit(1);
	}

	bzero(&serveraddr,sizeof(serveraddr));
	serveraddr.sin_family = AF_INET;
	serveraddr.sin_addr.s_addr = inet_addr(argv[1]);
	serveraddr.sin_port = htons(atoi(argv[2]));

	if(bind(sockfd,(struct sockaddr *)&serveraddr,sizeof(serveraddr)) < 0)
	{
    
    
		perror("faile to bind.\n");
		return -1;
	}
	
	//将套接字设为监听模式
	if(listen(sockfd,5) < 0)
	{
    
    
		perror("fail to listen.\n");
		return -1;
	}
	
	//处理僵尸进程
	signal(SIGCHLD,SIG_IGN);

	while(1)
	{
    
    
		if((acceptfd = accept(sockfd,NULL,NULL)) < 0)
		{
    
    
			perror("fail to accept.\n");
			return -1;
		}
		else
		{
    
    
			printf("OK!\n");
		}

		if((pid = fork()) < 0)
		{
    
    
			perror("fail ti fork.\n");
			return -1;
		}

		else if(pid == 0) //子进程
		{
    
    
			//处理客户端具体的信息
			close(sockfd);
			do_client(acceptfd,db);
		}

		else//父进程，用来接收客户端的请求
		{
    
    
				close(acceptfd);
		}
	}

	return 0;
}

数据库信息如下：
数据库信息

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