MySQL connector c++使用笔记
MySQL的connector官方地址: http://dev.mysql.com/downloads/connector/
针对c++来说, 可以选择c或者c++的库.
c++的实现是参考了java的JDBC, 所以熟悉JDBC的人可以很快上手.
定义这样几个类
Connection
Driver
PreparedStatement
ResultSet
ResultSetMetaData
Statement
下载安装mysql connector c++, 启动mysql, 使用test database.
准备数据(使用官方提供的示例数据, 参考 MySQL手册 3.3.3 http://dev.mysql.com/doc/refman/5.1/zh/tutorial.html)
CREATE TABLE pet (
name VARCHAR(20),
owner VARCHAR(20),
species VARCHAR(20),
sex CHAR(1),
birth DATE,
death DATE
);
导入数据(路径可以为相对路径或绝对路径)
LOAD DATA LOCAL INFILE 'pet.txt' INTO TABLE pet;
pet.txt(修改中间的间隔为\t)
Fluffy Harold cat f 1993-02-04 \N
Claws Gwen cat m 1994-03-17 \N
Buffy Harold dog f 1989-05-13 \N
Fang Benny dog m 1990-08-27 \N
Bowser Diane dog m 1979-08-31 1995-07-29
Chirpy Gwen bird f 1998-09-11 \N
Whistler Gwen bird \N 1997-12-09 \N
Slim Benny snake m 1996-04-29 \N
示例代码
#include <iostream>
#include "mysql_driver.h"
#include "mysql_connection.h"
#include "cppconn/driver.h"
#include "cppconn/statement.h"
#include "cppconn/prepared_statement.h"
#include "cppconn/metadata.h"
#include "cppconn/exception.h" int main() {
const char* user = "root";
const char* passwd = "";
const char* host = "tcp://localhost:3306";
const char* database = "test";
try {
sql::mysql::MySQL_Driver* driver =
sql::mysql::get_mysql_driver_instance();
sql::Connection* conn = driver->connect(host, user, passwd);
conn->setSchema(database);
std::cout << "status: " << conn->isClosed() << std::endl;
sql::Statement *stmt = conn->createStatement();
sql::ResultSet *res = stmt->executeQuery("select 1;");
while (res->next()) {
std::cout << res->getInt(1) << std::endl;
} res = stmt->executeQuery("select * from pet;");
while (res->next()) {
std::cout << res->getString(1) << ",";
std::cout << res->getString(2) << ",";
std::cout << res->getString(3) << ",";
std::cout << res->getInt(4) << ",";
std::cout << res->getString(5) << ",";
std::cout << res->getString(6) << std::endl;
} delete res;
delete stmt;
delete conn;
} catch (sql::SQLException& e) {
std::cout << "# ERR: SQLException in " << __FILE__;
std::cout << "(" << __FUNCTION__ << ") on line " << __LINE__ << std::endl;
std::cout << "# ERR: " << e.what();
std::cout << " (MySQL error code: " << e.getErrorCode();
std::cout << ", SQLState: " << e.getSQLState() << " )" << std::endl;
}
return 0;
}
运行结果
status: 0
1
Fluffy,Harold,cat,0,1993-02-04,
Claws,Gwen,cat,0,1994-03-17,
Buffy,Harold,dog,0,1989-05-13,
Fang,Benny,dog,0,1990-08-27,
Bowser,Diane,dog,0,1979-08-31,1995-07-29
Chirpy,Gwen,bird,0,1998-09-11,
Whistler,Gwen,bird,0,1997-12-09,
Slim,Benny,snake,0,1996-04-29,
参考文档:
- 官方手册: http://dev.mysql.com/doc/refman/5.6/en/connector-cpp.html
- MySQL Connector/C++文档翻译: http://www.cnblogs.com/dvwei/archive/2013/04/18/3029464.html
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