记录编译 mysql C and C++ connector 和简单访问数据库.
环境: vs2012, mysql 5.6.13, 基于x64
0. 软件包
mysql http://dev.mysql.com/downloads/mysql/
c connector http://dev.mysql.com/downloads/connector/c/
c++ connector依赖C connector, mysql的binary里面有编译好的C connector lib, 如果你用的编译器和mysql 一样, 那么不用重新编译
c++ connector http://dev.mysql.com/downloads/connector/cpp/
boost http://sourceforge.net/projects/boost/files/boost/1.54.0/
c++ Connector 依赖boost. 本来还尝试过vs2013, 但是boost1.54在vs2013 preview下编译有问题, 我没有试低版本的boost.
cmake http://www.cmake.org/cmake/resources/software.html
mysql的project是基于cmake. cmake可以生成vc project, 使用起来挺方便
1. 环境bat vs2012x64env.bat
call "C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\vcvarsall.bat" amd64
set PATH=%PATH%;D:\mybin\cmake-2.8.11.1-win32-x86\bin
set MYSQL_DIR=D:\mybin\mysql-5.6.13-winx64
set BOOST_ROOT=D:\mybin\boost_1_54_0
cmd /K
2. Generate vc project
C connector
cmake -G "Visual Studio 11 Win64"
build project libmysql, 只需要一个lib, 不用编译所有, debug模式下, 自带trace
C++ connector
如果想要打开trace, 加-DMYSQLCPPCONN_TRACE_ENABLE:BOOL=1, 实际还没有结束, 大概是cmake生成project的错误, 需要手动添加预定义宏 CPPCONN_TRACE_ENABLED
cmake -DMYSQLCPPCONN_TRACE_ENABLE:BOOL=1 -G "Visual Studio 11 Win64"
build project mysqlcppconn
把头文件copy在mysql下, 方便些, 不是必须
copy D:\mybin\mysql-connector-c++-1.1.3\cppconn D:\mybin\mysql-5.6.13-winx64\include\cppconn
3.Demo, 贴代码了
#include <iostream>
#include <memory>
#include <string>
#include <cppconn\driver.h>
#include <cppconn\exception.h>
#include <cppconn\resultset.h>
#include <cppconn\statement.h>
#include <cppconn\prepared_statement.h>
static const char* g_sqltrance = "";//"d:t:O,client.trace";
static const int g_enable_debug_trace = 0;
int main()
try
{
std::cout << "connect db start ... \n";
auto driver = get_driver_instance();
std::unique_ptr<sql::Connection> con(driver->connect("tcp://127.0.0.1:3306", "root", ""));
con->setClientOption("libmysql_debug", g_sqltrance);
con->setClientOption("clientTrace", &g_enable_debug_trace);
con->setSchema("test");
// create table
std::unique_ptr<sql::Statement> stmt(con->createStatement());
stmt->execute("drop table if exists test");
stmt->execute("create table test(id int, label char(1))");
// insert
stmt->execute("insert into test(id, label) values (1, 'a')");
stmt->execute("insert into test(id, label) values (2, 'b')");
stmt->execute("insert into test(id, label) values (3, 'c')");
// update
stmt->executeUpdate("update test set label='e' where id=2");
// prepared statement
std::unique_ptr<sql::PreparedStatement> prep_stmt(con->prepareStatement("insert into test(id, label) values(?, ?)"));
size_t n = 5;
while (n++ < 30)
{
prep_stmt->setInt(1, n);
prep_stmt->setString(2, sql::SQLString(std::string(1, 'A' + n)));
prep_stmt->execute();
}
// query
std::unique_ptr<sql::ResultSet> res(stmt->executeQuery("select id, label from test order by id asc"));
while (res->next())
{
std::cout << "id = " << res->getInt(1) << " label = " << res->getString("label") << "\n";
}
return 0;
}
catch (sql::SQLException & e)
{
std::cout << "SQLException : \n "
<< e.what()
<< "\n ErrorCode " << e.getErrorCode() << " "
<< "\n SQLState " << e.getSQLState() << "\n";
}
catch (...)
{
std::cout << "uncatch exception\n";
}
4. 如果想导入sample数据库
http://dev.mysql.com/doc/index-other.html
download world database InnoDB version
mysql -u root
create database world;
use world;
source c:\world_innodb.sql
show tables;
