本文实例为大家分享了JDBC建立数据库连接的具体代码，供大家参考，具体内容如下
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import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import com.MySQL.jdbc.Connection;
import com.mysql.jdbc.PreparedStatement;
public class Test {
public static void main(String[] args) {
//声明Connection对象
Connection conn = null;
PreparedStatement preparedStatement = null;
ResultSet resultSet = null;
//驱动程序名
String driver = "com.mysql.jdbc.Driver";
//用户名
String user = "root";
//密码
String password = "1234";
//url
String url = "jdbc:mysql://localhost:3306/db_person";
try {
String sql = "SELECT * FROM student";
//1.加载驱动
Class.forName(driver);
//2.获得connect连接
conn = (Connection) DriverManager.getConnection(url, user, password);
//3.获得PreparedStatement
preparedStatement = (PreparedStatement) conn.prepareStatement(sql);
//4.获得结果集
resultSet = preparedStatement.executeQuery();
while(resultSet.next()) {
int id = resultSet.getInt(1);
String name = resultSet.getString(2);
String sex = resultSet.getString(3);
int age = resultSet.getInt(4);
System.out.println(id +" "+ name + " " + sex + " " + age);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally {
if(resultSet != null) {
try {
resultSet.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(preparedStatement != null) {
try {
preparedStatement.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(conn != null) {
try {
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持创新互联。
