mysql中文坑爹的东西

db_user_mail* pMail = offline->mutable_user_mail();
                ASSERT(pMail->has_content());//系统邮件肯定需要content

                char* pContent = UTF8ToANSI(pMail->content().c_str());

                char sql[1024 * 10] = {0};
                sprintf_s(sql, sizeof(sql), "INSERT INTO `user_sys_mail` SET  `content` = ‘%s‘, `type` = %d, `send_time` = from_unixtime(%u), `valid_time` = %u;SELECT  LAST_INSERT_ID();",
                    pContent,  pMail->type(), pMail->send_time(), offline->valid_time());
                
                free(pContent);

                char* pSql = ANSIToUTF8(sql);
                int code = CDBMgr::Query(con, pSql, strlen(pSql));
                free(pSql);
                if (0 != code)   //非0查询失败  
                {
                    printf("query failed! [%s] [%d] [%s] \n", sql, mysql_errno(con), mysql_error(con));
                    return -1;
                }