（1）編譯
treehrt@treehrt-BM6AE-BM1AE-BP1AE:~/mysqlc$ gcc t17.c `mysql_config --cflags --libs` -o t17
（2）轉入用資料檔cust.csv：
treehrt@treehrt-BM6AE-BM1AE-BP1AE:~/mysqlc$ cat cust.csv
cardid,uname,remain
922001,鼠,6000
922002,牛,5000
922003,虎,4000
922004,兔,3000
922005,龍,2000
922006,蛇,1000
（3）執行
treehrt@treehrt-BM6AE-BM1AE-BP1AE:~/mysqlc$ ./t17 cust.csv
0[922001] 1[鼠] 2[6000]
SQL指令: [insert into new_cust (inyear,cardid,uname,cid4,remain) values (107,'922001','鼠' ,'xxxx',6000.00)] 執行成功!
0[922002] 1[牛] 2[5000]
SQL指令: [insert into new_cust (inyear,cardid,uname,cid4,remain) values (107,'922002','牛' ,'xxxx',5000.00)] 執行成功!
0[922003] 1[虎] 2[4000]
SQL指令: [insert into new_cust (inyear,cardid,uname,cid4,remain) values (107,'922003','虎' ,'xxxx',4000.00)] 執行成功!
0[922004] 1[兔] 2[3000]
SQL指令: [insert into new_cust (inyear,cardid,uname,cid4,remain) values (107,'922004','兔' ,'xxxx',3000.00)] 執行成功!
0[922005] 1[龍] 2[2000]
SQL指令: [insert into new_cust (inyear,cardid,uname,cid4,remain) values (107,'922005','龍' ,'xxxx',2000.00)] 執行成功!
0[922006] 1[蛇] 2[1000]
SQL指令: [insert into new_cust (inyear,cardid,uname,cid4,remain) values (107,'922006','蛇' ,'xxxx',1000.00)] 執行成功!
（4）程式碼
treehrt@treehrt-BM6AE-BM1AE-BP1AE:~/mysqlc$ cat t17.c
#include <my_global.h>
#include <mysql.h>
#define HOST "localhost"
#define USER "treehrt"
#define PWD "abc123abc123"
#define DB "ilvssell"
typedef struct CUSTREC
{
//char uid[10];
double remain;
//char inyear[5];
//char dept[10];
//char grade[10];
//char class[10];
char cardid[10];
char uname[10];
//char pid[10];
//char addr[80];
//char tel[15];
//char oldclass[10];
//char sno[2];
//int lostc;
//char gen_code;
//char in_use;
//char cid[4];
} custRec ;
void finish_with_error(MYSQL *con)
{
fprintf(stderr, "%s\n", mysql_error(con));
mysql_close(con);
exit(1);
}
char tokens[100][60]; //最多100個存放token
int tokensc; //tokens計數
void insert_new_cust_rec(custRec cR){
// printf("待寫入的資料：cR.cardid=%s,cR.uname=%s cR.remain=%.2f\n",cR.cardid,cR.uname,cR.remain);
char st[500];
sprintf(st,"insert into new_cust (inyear,cardid,uname,cid4,remain) values (107,'%s','%s' ,'xxxx',%.2f)",cR.cardid,cR.uname,cR.remain) ;
MYSQL *con = mysql_init(NULL);
if (con == NULL) finish_with_error(con);
if (mysql_real_connect(con, HOST , USER, PWD, DB, 0, NULL, 0) == NULL) finish_with_error(con);
mysql_query(con, "set names utf8");
if (mysql_query(con, st)) finish_with_error(con);
printf("SQL指令: [%s] 執行成功! \n\n", st);
}
void parsecsvline(char *st ,char deli){
char tk[80];
tokensc=0;
strcpy(tk,"");
for (int i=0;i<strlen(st);i++) {
if((st[i]==deli) || (st[i]==0x0a)) {
strcpy(tokens[tokensc],tk);
tokensc++;
strcpy(tk,"");
}
else sprintf(tk,"%s%c",tk,st[i]);
}
for (int i=0;i<tokensc;i++) {
printf("%d[%s] ",i,tokens[i]);
}
printf("\n");
}
int main(int argc, char **argv)
{
char st[100];
FILE *fp;
custRec cR;
fp = fopen(argv[1] , "r"); //argv[1] use for csv filename ,ex cust.csv.
if(fp == NULL) {
perror("Error opening file");
return(-1);
}
fgets(st,100,fp);
while (1){
if( fgets(st, 100, fp)!=NULL ) {
parsecsvline(st,',');
strcpy(cR.cardid,tokens[0]);
strcpy(cR.uname,tokens[1]);
cR.remain=atof(tokens[2]);
insert_new_cust_rec(cR);
}
else break;
}
fclose(fp);
exit(0);
} |