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;
```

巴特西

mysql connector c++ 1.1 API初步体验

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