Jdbc连接数据库入门（2）--向表中添加一条记录

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

import com.mysql.cj.jdbc.Driver;


//向表中添加一条记录
public class JdbcDemo02 {
public static void main(String[] args) throws Throwable {
	Statement stmt=null;
	Connection conn = null;
	try {
		//1.注册驱动
		Class.forName("com.mysql.cj.jdbc.Driver");
		//2.获取数据库的连接对象
		conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/ceshi?serverTimezone=GMT%2B8", "root","123456");
		//3.定义sql
		String sql= "insert into student values(3,'wangwu',2000)";
		//4.获取执行sql的对象
		stmt = conn.createStatement();
        //5.执行sql
        int count = stmt.executeUpdate(sql);//影响的行数
      //6.处理结果
        System.out.println(count);
        if(count > 0){
            System.out.println("添加成功！");
        }else{
            System.out.println("添加失败！");
        }

	} catch (ClassNotFoundException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}finally {
        //stmt.close();
        //7. 释放资源
        //避免空指针异常
        if(stmt != null){
            try {
                stmt.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }

        if(conn != null){
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}
}