环境配置这样的;
点击设置按钮,点击project structure
三个箭头表示三个步骤
点击加号,并根据图箭头所示,找到jar包所在地。
找到jar包了
点击确定就可;
来了来了,看箭头;
上代码->
import java.sql.*;
public class Main {
public static void main(String[] args) throws SQLException {
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
try {
//加载数据库驱动
Class.forName("com.mysql.cj.jdbc.Driver");
//通过DriverManager获取数据库连接
String url = "jdbc:mysql://158.101.100.183:3306/jdbc";
String username = "jdbc";
String password = "618030";
conn = DriverManager.getConnection(url, username, password);
//3通过Connection对象获取Statement对象
stmt = conn.createStatement();
//使用Statement执行sql语句
String sql = "select * from tb_user";
rs = stmt.executeQuery(sql);
//操作ResultSet结果集
System.out.println("id | name sex" + " | email | birthday");
while (rs.next()) {
int id = rs.getInt("id");//通过列名获取指定的字段
String name = rs.getString("name");
String sex = rs.getString("sex");
String email = rs.getString("email");
String birthday = rs.getString("birthday");
System.out.println(id + " | " + name + " | " + sex + "+ | " + email + " | " + birthday);
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} finally {
//关闭连接,释放资源
if (rs != null) {
rs.close();
}
if (stmt != null) {
stmt.close();
}
if (conn != null) {
conn.close();
}
}
}
}
这样连接就可以了。祝好运,如果有不懂的,可以联系我哈。lechunqiu@outlook.com