mysql connector c++ 1.1 API初步体验

mysql connector c++ 1.1 api初步体验

1，常用的头文件

#include <mysql_connection.h>
#include <mysql_driver.h>
#include <cppconn/driver.h>
#include <cppconn/statement.h>
#include <cppconn/prepared_statement.h>
#include <cppconn/resultset.h>

2，创建连接

#define dbhost "tcp://127.0.0.1:3306"
#define user "username"
#define password "pwd"

sql::mysql::mysql_driver *driver;
sql::connection *con;
sql::statement *stmt;

driver = sql::mysql::get_mysql_driver_instance();
con = driver->connect(dbhost, user, password);

3，选择要使用的database的名字

con->setschema("database_name");

4，设置连接的属性，例子是设置连接的字符集

con->setclientoption("charactersetresults", "utf8");

5，判断连接是否建立成功

if(con->isvalid()){
    std::cout << "connected!" << std::endl;
}

6，执行insert语句

sql::preparedstatement* pstmt;
std::string sqlop="insert into user(name,nickname,password, phone) values(?,?,?,?)";
pstmt=con->preparestatement(sqlop);
pstmt->setstring(1,"李四2");
pstmt->setstring(2,"aaaa男2");
pstmt->setstring(3,"aaaa!");
pstmt->setstring(4,"123123");
pstmt->execute();

7，执行查询语句

sql::statement *stmt;
sql::resultset  *res;
std::string qry = "select * from user";
stmt = con->createstatement();
//选择使用的数据库的名字
stmt->execute("use cloud_disk");
res = stmt->executequery(qry);
while(res->next()){
  std::cout << res->getint(1);
  std::cout << res->getstring(2) << std::endl;
}

8，释放资源

• 除了sql::mysql::mysql_driver *driver指针，都需要手动调用delete释放

  delete res;
  delete stmt;
  delete con;

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