lr初探mysql-1

vuser_init

#include “Ptt_Mysql.h”
#include “mysql.h”
#include “mysql_com.h”
#include “mysql_time.h”
#include “mysql_version.h”
#include “typelib.h”
#include “my_list.h”
#include “my_alloc.h”
#define MYSQLSERVER “localhost”
#define MYSQLUSERNAME “root”
#define MYSQLPASSWORD “xxxxx”
#define MYSQLDB “yourdatabase”
#define MYSQLPORT “3306”
char chQuery[1024];
int statu=1;
int status=0;
MYSQL Mconn;
char sql_query[256], sql_sub_query[50];
int i=0, res=0, conn_fail=0, conn_iter=0;
char response[50];// to go
vuser_init()
{
lr_load_dll (“libmysql.dll”);
lr_start_transaction(“mysql_conn”); //设置一个连接数据库的事务
/
------------------------------------------------------------------------/
/
Initialise MySQL /
if(!(Mconn = mysql_init(NULL)))
{
lr_message(“Error -1: Cannot initialize MySQL - %s”, mysql_error(Mconn));
//return -1;
statu = 0;
lr_end_transaction(“mysql_conn”, LR_FAIL); //初始化数据库失败判定事务失败
}
/
------------------------------------------------------------------------/
do
{
/
Connect to database */
if (!mysql_real_connect(Mconn, MYSQLSERVER, MYSQLUSERNAME, MYSQLPASSWORD, MYSQLDB, atoi(MYSQLPORT), NULL, 0))
{
conn_fail = -2;
conn_iter++;
sleep(100);
}
else
conn_fail = 0;
}
while(conn_fail < 0 && conn_iter < 10);
if (conn_fail < 0)
{
lr_message(“Error -2: %s”, mysql_error(Mconn));
//mysql_close(Mconn);
//return -2;
statu = 0;
lr_end_transaction(“mysql_conn”, LR_FAIL); //连接数据库失败判定事务失败
}
else
{
//lr_message(“MySql - Good Connection”);
//mysql_close(Mconn);
statu = 1;
lr_end_transaction(“mysql_conn”, LR_PASS); //连接数据库成功,事务通过。
}
return 0;
}

action

Action()
{
if(statu){ //成功连接数据库后才进行执行sql的操作
lr_start_transaction(“mysql_select”);
sprintf(chQuery, “select * from users;”);//查询论坛用户
//sprintf(chQuery,“UPDATE lr_test SET password = “%s” WHERE username=‘tom’”,lr_eval_string ("{pwd}"));
/*
sprintf(chQuery,"update pre_ucenter_members set username=‘dd’ where username=‘qq’ ");//更改用户名qq为dd
sprintf(chQuery,“delete from pre_ucenter_members ORDER BY uid desc LIMIT 1”);//删除最后添加的一条数据
*/
status = lr_mysql_query(Mconn, chQuery);
if(status!=0){ //判断sql是否执行成功
lr_end_transaction(“mysql_select”,LR_FAIL);
}else{
lr_end_transaction(“mysql_select”,LR_PASS);
}

	lr_start_transaction("mysql_insert");
	sprintf(chQuery,"insert into users(id,name,nick_name, age, sex, is_member, passwords,create_date,update_date) values(2,'zhangqi','张旗','23','2',0,'123456',now(),now())");//插入数据
	status = lr_mysql_query(Mconn, chQuery);
	if(status!=0){ //判断sql是否执行成功
		lr_end_transaction("mysql_insert",LR_FAIL);
	}else{
		lr_end_transaction("mysql_insert",LR_PASS);
	}
} 
return 0;

}

vuser_end

vuser_end()
{
lr_mysql_disconnect(Mconn); //关闭数据库连接
return 0;
}

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