这个东东也是折腾了几天,网上很多文章可能已经过时,所以写下不同,以备后用.
参考网址:
http://blog.csdn.net/genganpeng/article/details/7402229
http://blog.csdn.net/liefdiy/article/details/5348583
http://blog.itpub.net/81/viewspace-710064/
http://www.software8.co/wzjs/czxt/4668.html
为什么要用 OTL去连接mysql.
OTL是一个纯C++的通用数据库连接模板库，可以支持各种当下流行的数据库，如Oracle，Sybase, MySQL, PostgreSQL, EnterpriseDB, SQLite, MS ACCESS, Firebird等等.它是一个跨平台类库，在MS Windows, Linux/Unix/Mac OS X 都可以使用。
可baidu C++ OTL深入了解.
环境
Linux
root@debian:~# uname -a
Linux debian 3.2.0-4-amd64 #1 SMP Debian 3.2.65-1 x86_64 GNU/Linux
mysql
root@debian:~# mysql --version
mysql Ver 14.14 Distrib 5.5.43, for debian-linux-gnu (x86_64) using readline 6.2
unixODBC
root@debian:~# isql --versoin
unixODBC 2.3.2
OTL版本
OTL 4.0.359
下载地址:http://otl.sourceforge.net/
程序安装
1,unixODBC
下载地址:
http://www.unixodbc.org/
1. copy the unixODBC-2.3.2.tar.gz file somewhere you can create files and directories
2. gunzip unixODBC*.tar.gz
3. tar xvf unixODBC*.tar
./configure
make
make install
就OK了
2,mysql
apt-get install mysql-server mysql-client
还需要安装 mysql的odbc驱动
下载地址:
http://mirrors.sohu.com/mysql/Connector-ODBC/5.3/
如果是新版本改下5.3这个版本号就ok.
我的linux 是x64所以下载
mysql-connector-odbc-5.3.2-linux-glibc2.5-x86-64bit.tar.gz
安装对应的数据库驱动。比如mysql 对应 libmyodbc。 安装完后查看下库包含的文件就可以找到对应的lib
--此次强烈建议用源码安装。ubuntu 安装很简单apt-get就好，rpm 包会有依赖问题，YUM 有些包会冲突。
tar zxvf mysql-connector-odbc-5.1.11-linux-el6-x86-64bit.tar.gz
cd mysql-connector-odbc-5.1.11-linux-el6-x86-64bit\lib
#复制到 /usr/local/lib
cp ./*.* /usr/local/lib
2.1 mysql 测试前的准备.
#使用mysql数据库
use mysql; #查询
select host,user,password from user; #更新root密码
update user set password=PASSWORD('') where user='root' ; #刷新
flush privileges; #创建新用户,设置任何地方都可以访问.
#命令:CREATE USER 'username'@'host' IDENTIFIED BY 'password';
create user 'dbadmin'@'%' identified by 'aaaaaa'; #创建数据库 test1,设置utf8格式编码
Create DATABASE IF NOT EXISTS test1 default charset utf8 COLLATE utf8_general_ci; #显示数据库
show databases; #设置数据库test1的所有权限给 dbadmin用户 .
grant all on test1.* to 'dbadmin'@'%' ; #刷新
flush privileges;
mysql配置文件my.cnf详解 :
http://blog.chinaunix.net/uid-20639775-id-154429.html
http://blog.sina.com.cn/s/blog_a8b2435901016f5f.html
mysql 更改数据库目录:
http://blog.chinaunix.net/uid-77311-id-3485225.html
mysql 更改数据编码:
http://www.pc6.com/infoview/Article_63586.html
http://blog.chinaunix.net/uid-223060-id-2127099.html
最后/etc/mysql/my.cnf 的内容为:
#
# The MySQL database server configuration file.
#
# You can copy this to one of:
# - "/etc/mysql/my.cnf" to set global options,
# - "~/.my.cnf" to set user-specific options.
#
# One can use all long options that the program supports.
# Run program with --help to get a list of available options and with
# --print-defaults to see which it would actually understand and use.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html # This will be passed to all mysql clients
# It has been reported that passwords should be enclosed with ticks/quotes
# escpecially if they contain "#" chars...
# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock #设置编译
default-character-set = utf8 # Here is entries for some specific programs
# The following values assume you have at least 32M ram # This was formally known as [safe_mysqld]. Both versions are currently parsed.
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0 [mysqld]
#
# * Basic Settings
#
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
#datadir = /var/lib/mysql #原数据库目录
datadir = /xxx/x/xxx/mysql #现数据库目录
tmpdir = /tmp
lc-messages-dir = /usr/share/mysql #设置编译
default-storage-engine=INNODB
character-set-server=utf8
collation-server=utf8_general_ci skip-external-locking
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
#bind-address = 127.0.0.1
#
# * Fine Tuning
#
key_buffer = 16M
max_allowed_packet = 16M
thread_stack = 192K
thread_cache_size = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover = BACKUP
#max_connections = 100
#table_cache = 64
#thread_concurrency = 10
#
# * Query Cache Configuration
#
query_cache_limit = 1M
query_cache_size = 16M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file = /var/log/mysql/mysql.log
#general_log = 1
#
# Error logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf.
#
# Here you can see queries with especially long duration
#log_slow_queries = /var/log/mysql/mysql-slow.log
#long_query_time = 2
#log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
# other settings you may need to change.
#server-id = 1
#log_bin = /var/log/mysql/mysql-bin.log
expire_logs_days = 10
max_binlog_size = 100M
#binlog_do_db = include_database_name
#binlog_ignore_db = include_database_name
#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!
#
# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
#
# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem [mysqldump]
quick
quote-names
max_allowed_packet = 16M [mysql]
#no-auto-rehash # faster start of mysql but no tab completition [isamchk]
key_buffer = 16M #
# * IMPORTANT: Additional settings that can override those from this file!
# The files must end with '.cnf', otherwise they'll be ignored.
#
!includedir /etc/mysql/conf.d/
配置unixodbc
UNIXODBC 安装好后会有:
/etc/odbcinst.ini 和 /etc/odbc.ini ********但配置这两个文件不会生效,原因我暂时没有找到.请高手指点.
/usr/local/etc/odbcinst.ini 和 /usr/local/etc/odbc.ini 这两个配置文件才会生效.
/usr/local/etc/odbcinst.ini 配置:
#Section
[mysqlodbc]
#libmyodbc5w.so 和libmyodbc5a.so的区别
Driver=/usr/local/lib/libmyodbc5w.so
SETUP=/usr/local/lib/libmyodbc5w.so
UsageCount=1
关于 libmyodbc5w.so 和libmyodbc5a.so的区别 在
http://bugs.mysql.com/bug.php?id=69837
找到了相应的答案.
"
The odbcinst.ini file shows the driver library name as libmyodbc5.so, which
is not right for Connector/ODBC 5.2.5. It has to be either libmyodbc5w.so
(Unicode version) or libmyodbc5a.so (ANSI version). So, which version of
Connector/ODBC 5.2.5 you used? Was it Unicode (w) or ANSI (a)?
"
libmyodbc5w.so 是unicode 版本的.
libmyodbc5a.so 是ansi版本的.
/usr/local/etc/odbc.ini 配置:
#Section
[TEST]
#Driver=/usr/local/lib/libmyodbc5a.so
Description = The Database for mysql
Trace = On
TraceFile = stderr
#odbcinst.ini 中指定的Section
Driver = mysqlodbc
#数据库IP
SERVER = localhost
#用户名
USER = sa2
#密码
PASSWORD = 111111
#数据库端口
PORT = 3306
#要连接的数据库
DATABASE = test1
#虽然这儿指定 mysqld.sock位置,但后面还是会报错,下文有相应解决办法.
socket=/var/run/mysqld/mysqld.sock
#指定编码
charset = UTF8
option = 3
在配置文件里，DSN的名字即为Section的名字。在配置信息中，有一部分配置项是ODBC使用的，另一部分则由驱动程序处理。如果操作完全正确的话，现在ODBC已经成功了。可以试下isql命令操作刚配置的DSN。
可能会报错误:
Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
通过查看
cat /etc/mysql/my.cnf 可以得知:
socket = /var/run/mysqld/mysqld.sock
最简单的办法建立软连接.
命令:ln -s /var/run/mysqld/mysqld.sock /tmp/mysql.sock
查看:
root@debian:/home/c2# ls -l /tmp
total 0
lrwxrwxrwx 1 root root 27 Jul 10 00:39 mysql.sock -> /var/run/mysqld/mysqld.sock
连接成功.
再运行 命令:
root@debian:~# isql TEST -v
+---------------------------------------+
| Connected! |
| |
| sql-statement |
| help [tablename] |
| quit |
| |
+---------------------------------------+
SQL> select * from t1;
+-----------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Id | name | name2 |
+-----------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 1 | 杩姣 | 灏3 |
| 2 | rq | fasdf |
| 3 | 灏寮? | xiaoZ |
+-----------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
SQLRowCount returns 3
3 rows fetched
SQL>
t1表的视图:
通过OTL连接mysql
目录内容如下:
otltest.cpp内容如下:
#include <iostream>
using namespace std;
#include <stdio.h>
#include <string.h>
#include <stdlib.h> #include <stdio.h> // Thefollowing #define is required with MyODBC 5.1 and higher
//#define OTL_ODBC_SELECT_STM_EXECUTE_BEFORE_DESCRIBE #define OTL_ODBC // CompileOTL 4.0/ODBC
#define OTL_ODBC_UNIX // uncomment this line if UnixODBC is used
//#define OTL_UNICODE // Compile OTL with Unicode --->屏蔽 使用时中文显示乱码 #include "otlv4.h" // include the OTL 4.0 header file otl_connect db; // connect object void select()
{
try{
otl_stream ostream1(500, // buffer size
"select * from t1 ",
// SELECT statement
db // connect object
);
// create select stream int id;
unsigned char user[255];
unsigned char name[255]; while(!ostream1.eof())
{ // while not end-of-data
//ostream1>>id>>user>>name;
ostream1>>id;
ostream1>>user;
ostream1>>name;
cout<<"id="<<id<<endl;
cout<<"user="<<user<<endl;
cout<<"name="<<name<<endl; }
} catch(otl_exception& p)
{ // intercept OTL exceptions cout<<"otl_exception:"<<endl;
cerr<<p.msg<<endl; // print out error message
cerr<<p.stm_text<<endl; // print out SQL that caused the error
cerr<<p.var_info<<endl; // print out the variable that caused the error
} } int main()
{ cout<<"hello"<<endl;
otl_connect::otl_initialize(); // initialize the database API environment
try{ db.rlogon("sa2/111111@TEST"); // connect to the database 这儿是 用户名/密码@section名 (/usr/local/etc/odbc.ini 的section名) select(); // select records from table } catch(otl_exception& p){ // intercept OTL exceptions
cerr<<p.msg<<endl; // print out error message
cerr<<p.stm_text<<endl; // print out SQL that caused the error
cerr<<p.var_info<<endl; // print out the variable that caused the error
} db.logoff(); // disconnect from the database return 0; }
CMakeLists.txt 内容:
cmake_minimum_required (VERSION 2.6)
project (otltest2)
add_executable(otltest2 otltest.cpp)
target_link_libraries(otltest2 libmyodbc5a.so) --->
一定要添加 libmyodbc5a.so 否则会出现 SQLFreeHandle 之类的错误
root@debian:/home/c2# make
-- Configuring done
-- Generating done
-- Build files have been written to: /home/c2
Scanning dependencies of target otltest2
[100%] Building CXX object CMakeFiles/otltest2.dir/otltest.cpp.o
Linking CXX executable otltest2
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_conn::~otl_conn()':
otltest.cpp:(.text._ZN8otl_connD2Ev[_ZN8otl_connD5Ev]+0x63): undefined reference to `SQLFreeHandle'
otltest.cpp:(.text._ZN8otl_connD2Ev[_ZN8otl_connD5Ev]+0x9b): undefined reference to `SQLFreeHandle'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_conn::rlogon(char const*, int)':
otltest.cpp:(.text._ZN8otl_conn6rlogonEPKci[_ZN8otl_conn6rlogonEPKci]+0x532): undefined reference to `SQLAllocHandle'
otltest.cpp:(.text._ZN8otl_conn6rlogonEPKci[_ZN8otl_conn6rlogonEPKci]+0x588): undefined reference to `SQLSetEnvAttr'
otltest.cpp:(.text._ZN8otl_conn6rlogonEPKci[_ZN8otl_conn6rlogonEPKci]+0x5df): undefined reference to `SQLAllocHandle'
otltest.cpp:(.text._ZN8otl_conn6rlogonEPKci[_ZN8otl_conn6rlogonEPKci]+0x64c): undefined reference to `SQLSetConnectAttr'
otltest.cpp:(.text._ZN8otl_conn6rlogonEPKci[_ZN8otl_conn6rlogonEPKci]+0x67d): undefined reference to `SQLSetConnectAttr'
otltest.cpp:(.text._ZN8otl_conn6rlogonEPKci[_ZN8otl_conn6rlogonEPKci]+0x6eb): undefined reference to `SQLSetConnectAttr'
otltest.cpp:(.text._ZN8otl_conn6rlogonEPKci[_ZN8otl_conn6rlogonEPKci]+0x765): undefined reference to `SQLConnect'
otltest.cpp:(.text._ZN8otl_conn6rlogonEPKci[_ZN8otl_conn6rlogonEPKci]+0x85e): undefined reference to `SQLDriverConnect'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_conn::logoff()':
otltest.cpp:(.text._ZN8otl_conn6logoffEv[_ZN8otl_conn6logoffEv]+0x57): undefined reference to `SQLDisconnect'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_conn::error(otl_exc&)':
otltest.cpp:(.text._ZN8otl_conn5errorER7otl_exc[_ZN8otl_conn5errorER7otl_exc]+0x67): undefined reference to `SQLGetDiagRec'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_conn::commit()':
otltest.cpp:(.text._ZN8otl_conn6commitEv[_ZN8otl_conn6commitEv]+0x22): undefined reference to `SQLEndTran'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::open(otl_conn&)':
otltest.cpp:(.text._ZN7otl_cur4openER8otl_conn[_ZN7otl_cur4openER8otl_conn]+0x4b): undefined reference to `SQLAllocHandle'
otltest.cpp:(.text._ZN7otl_cur4openER8otl_conn[_ZN7otl_cur4openER8otl_conn]+0xa7): undefined reference to `SQLSetStmtAttr'
otltest.cpp:(.text._ZN7otl_cur4openER8otl_conn[_ZN7otl_cur4openER8otl_conn]+0x100): undefined reference to `SQLSetStmtAttr'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::close(char)':
otltest.cpp:(.text._ZN7otl_cur5closeEc[_ZN7otl_cur5closeEc]+0x2d): undefined reference to `SQLFreeHandle'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::sql_row_count(long*)':
otltest.cpp:(.text._ZN7otl_cur13sql_row_countEPl[_ZN7otl_cur13sql_row_countEPl]+0x23): undefined reference to `SQLRowCount'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::parse(char*)':
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x498): undefined reference to `SQLTables'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x520): undefined reference to `SQLStatistics'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x566): undefined reference to `SQLGetTypeInfo'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x604): undefined reference to `SQLColumns'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x67c): undefined reference to `SQLProcedures'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x71a): undefined reference to `SQLColumnPrivileges'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x792): undefined reference to `SQLTablePrivileges'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x80a): undefined reference to `SQLPrimaryKeys'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x8a8): undefined reference to `SQLProcedureColumns'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x97e): undefined reference to `SQLForeignKeys'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0xa18): undefined reference to `SQLExecDirect'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0xc53): undefined reference to `SQLPrepare'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::exec(int, int, unsigned char)':
otltest.cpp:(.text._ZN7otl_cur4execEiih[_ZN7otl_cur4execEiih]+0x79): undefined reference to `SQLSetStmtAttr'
otltest.cpp:(.text._ZN7otl_cur4execEiih[_ZN7otl_cur4execEiih]+0xe1): undefined reference to `SQLExecute'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::bind(char const*, otl_var&, int, int, int, int, int, int)':
otltest.cpp:(.text._ZN7otl_cur4bindEPKcR7otl_variiiiii[_ZN7otl_cur4bindEPKcR7otl_variiiiii]+0x16b): undefined reference to `SQLBindParameter'
otltest.cpp:(.text._ZN7otl_cur4bindEPKcR7otl_variiiiii[_ZN7otl_cur4bindEPKcR7otl_variiiiii]+0x233): undefined reference to `SQLBindParameter'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::bind(int, otl_var&, int, int, int)':
otltest.cpp:(.text._ZN7otl_cur4bindEiR7otl_variii[_ZN7otl_cur4bindEiR7otl_variii]+0xe5): undefined reference to `SQLBindCol'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::describe_column(otl_column_desc&, int, int&)':
otltest.cpp:(.text._ZN7otl_cur15describe_columnER15otl_column_desciRi[_ZN7otl_cur15describe_columnER15otl_column_desciRi]+0x49): undefined reference to `SQLNumResultCols'
otltest.cpp:(.text._ZN7otl_cur15describe_columnER15otl_column_desciRi[_ZN7otl_cur15describe_columnER15otl_column_desciRi]+0xf1): undefined reference to `SQLDescribeCol'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::error(otl_exc&)':
otltest.cpp:(.text._ZN7otl_cur5errorER7otl_exc[_ZN7otl_cur5errorER7otl_exc]+0x67): undefined reference to `SQLGetDiagRec'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_sel::close_select(otl_cur&)':
otltest.cpp:(.text._ZN7otl_sel12close_selectER7otl_cur[_ZN7otl_sel12close_selectER7otl_cur]+0x33): undefined reference to `SQLFreeStmt'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_sel::first(otl_cur&, int&, int&, int&, int&, int)':
otltest.cpp:(.text._ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i[_ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i]+0x52): undefined reference to `SQLSetStmtAttr'
otltest.cpp:(.text._ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i[_ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i]+0xb5): undefined reference to `SQLSetStmtAttr'
otltest.cpp:(.text._ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i[_ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i]+0x111): undefined reference to `SQLExecute'
otltest.cpp:(.text._ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i[_ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i]+0x16c): undefined reference to `SQLFetchScroll'
otltest.cpp:(.text._ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i[_ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i]+0x20e): undefined reference to `SQLFreeStmt'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_sel::next(otl_cur&, int&, int&, int&, int&, int)':
otltest.cpp:(.text._ZN7otl_sel4nextER7otl_curRiS2_S2_S2_i[_ZN7otl_sel4nextER7otl_curRiS2_S2_S2_i]+0x86): undefined reference to `SQLFreeStmt'
otltest.cpp:(.text._ZN7otl_sel4nextER7otl_curRiS2_S2_S2_i[_ZN7otl_sel4nextER7otl_curRiS2_S2_S2_i]+0xca): undefined reference to `SQLFetchScroll'
otltest.cpp:(.text._ZN7otl_sel4nextER7otl_curRiS2_S2_S2_i[_ZN7otl_sel4nextER7otl_curRiS2_S2_S2_i]+0x161): undefined reference to `SQLFreeStmt'
collect2: error: ld returned 1 exit status
make[2]: *** [otltest2] Error 1
make[1]: *** [CMakeFiles/otltest2.dir/all] Error 2
make: *** [all] Error 2
root@debian:/home/c2#
当
target_link_libraries(otltest2 libmyodbc5a.so)
程序生成.
root@debian:/home/c2# make clean
root@debian:/home/c2# cmake .
-- Configuring done
-- Generating done
-- Build files have been written to: /home/c2
root@debian:/home/c2# make
-- Configuring done
-- Generating done
-- Build files have been written to: /home/c2
[100%] Building CXX object CMakeFiles/otltest2.dir/otltest.cpp.o
Linking CXX executable otltest2
[100%] Built target otltest2
root@debian:/home/c2#
前面说过
libmyodbc5w.so 是unicode 版本的.
libmyodbc5a.so 是ansi版本的.
当
target_link_libraries(otltest2 libmyodbc5w.so) 时 出错,
otl_conn::rlogon(char const*, int) 说明 unicode 版本不能使用.
unicode 应该是 otl_conn::rlogon(wchar const*, int)
otl.h 中有个 OTL_UNICODE_EXCEPTION_AND_RLOGON 这个宏 ,有时间的朋友可以研究下说下方式.3Q.
root@debian:/home/c2# make
-- Configuring done
-- Generating done
-- Build files have been written to: /home/c2
[100%] Building CXX object CMakeFiles/otltest2.dir/otltest.cpp.o
Linking CXX executable otltest2
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_conn::rlogon(char const*, int)':
otltest.cpp:(.text._ZN8otl_conn6rlogonEPKci[_ZN8otl_conn6rlogonEPKci]+0x64c): undefined reference to `SQLSetConnectAttr'
otltest.cpp:(.text._ZN8otl_conn6rlogonEPKci[_ZN8otl_conn6rlogonEPKci]+0x67d): undefined reference to `SQLSetConnectAttr'
otltest.cpp:(.text._ZN8otl_conn6rlogonEPKci[_ZN8otl_conn6rlogonEPKci]+0x6eb): undefined reference to `SQLSetConnectAttr'
otltest.cpp:(.text._ZN8otl_conn6rlogonEPKci[_ZN8otl_conn6rlogonEPKci]+0x765): undefined reference to `SQLConnect'
otltest.cpp:(.text._ZN8otl_conn6rlogonEPKci[_ZN8otl_conn6rlogonEPKci]+0x85e): undefined reference to `SQLDriverConnect'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_conn::error(otl_exc&)':
otltest.cpp:(.text._ZN8otl_conn5errorER7otl_exc[_ZN8otl_conn5errorER7otl_exc]+0x67): undefined reference to `SQLGetDiagRec'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::open(otl_conn&)':
otltest.cpp:(.text._ZN7otl_cur4openER8otl_conn[_ZN7otl_cur4openER8otl_conn]+0xa7): undefined reference to `SQLSetStmtAttr'
otltest.cpp:(.text._ZN7otl_cur4openER8otl_conn[_ZN7otl_cur4openER8otl_conn]+0x100): undefined reference to `SQLSetStmtAttr'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::parse(char*)':
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x498): undefined reference to `SQLTables'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x520): undefined reference to `SQLStatistics'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x566): undefined reference to `SQLGetTypeInfo'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x604): undefined reference to `SQLColumns'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x67c): undefined reference to `SQLProcedures'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x71a): undefined reference to `SQLColumnPrivileges'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x792): undefined reference to `SQLTablePrivileges'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x80a): undefined reference to `SQLPrimaryKeys'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x8a8): undefined reference to `SQLProcedureColumns'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0x97e): undefined reference to `SQLForeignKeys'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0xa18): undefined reference to `SQLExecDirect'
otltest.cpp:(.text._ZN7otl_cur5parseEPc[_ZN7otl_cur5parseEPc]+0xc53): undefined reference to `SQLPrepare'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::exec(int, int, unsigned char)':
otltest.cpp:(.text._ZN7otl_cur4execEiih[_ZN7otl_cur4execEiih]+0x79): undefined reference to `SQLSetStmtAttr'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::describe_column(otl_column_desc&, int, int&)':
otltest.cpp:(.text._ZN7otl_cur15describe_columnER15otl_column_desciRi[_ZN7otl_cur15describe_columnER15otl_column_desciRi]+0xf1): undefined reference to `SQLDescribeCol'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_cur::error(otl_exc&)':
otltest.cpp:(.text._ZN7otl_cur5errorER7otl_exc[_ZN7otl_cur5errorER7otl_exc]+0x67): undefined reference to `SQLGetDiagRec'
CMakeFiles/otltest2.dir/otltest.cpp.o: In function `otl_sel::first(otl_cur&, int&, int&, int&, int&, int)':
otltest.cpp:(.text._ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i[_ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i]+0x52): undefined reference to `SQLSetStmtAttr'
otltest.cpp:(.text._ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i[_ZN7otl_sel5firstER7otl_curRiS2_S2_S2_i]+0xb5): undefined reference to `SQLSetStmtAttr'
collect2: error: ld returned 1 exit status
make[2]: *** [otltest2] Error 1
make[1]: *** [CMakeFiles/otltest2.dir/all] Error 2
make: *** [all] Error 2
root@debian:/home/c2#
但 unixodbc 的ini 配置 文件
/usr/local/etc/odbcinst.ini 配置:
[mysqlodbc] #Section
Driver=/usr/local/lib/libmyodbc5w.so #libmyodbc5w.so 和libmyodbc5a.so的区别
SETUP=/usr/local/lib/libmyodbc5w.so
UsageCount=1
这儿配置 libmyodbc5w.so 和libmyodbc5a.so 都能正常访问. 运行 otltest2
root@debian:/home/c2# ./otltest2
hello
id=1
user=杩姣
name=灏3
id=2
user=rq
name=fasdf
id=3
user=灏寮?
name=xiaoZ
root@debian:/home/c2#
linux 下不能显示中文.
另一个程序可以在网页中显示:
至此 在debian x64环境下通过C++ 的OTL库去访问mysql已经完成.