diff --git "a/work/com/java/minxi/java_20240524/java_2302_\345\210\230\345\244\251\347\235\277_2344310234/Main.java" "b/work/com/java/minxi/java_20240524/java_2302_\345\210\230\345\244\251\347\235\277_2344310234/Main.java" new file mode 100644 index 0000000000000000000000000000000000000000..3e4ad152b392be6d77fbef63380f3d5621d32e9a --- /dev/null +++ "b/work/com/java/minxi/java_20240524/java_2302_\345\210\230\345\244\251\347\235\277_2344310234/Main.java" @@ -0,0 +1,63 @@ +package com.java.minxi.java_20240524.java_2302_刘天睿_2344310234; +import java.sql.*; + +public class Main { + public static void main(String[] args) { + demo1(); + } + public static void demo1() { + ResultSet rs = null; + Statement statement = null; + Connection connection = null; + try { + Class.forName("com.mysql.cj.jdbc.Driver"); + String url="jdbc:mysql://127.0.0.1:3306/Student?serverTimezone=Asia/Shanghai"; + String userName="root"; + String passWord="123456"; + connection = DriverManager.getConnection(url,userName,passWord); + String sql="select * from teacher_info "; + statement = connection.createStatement(); + rs = statement.executeQuery(sql); + while (rs.next()){ + int id = rs.getInt("id"); + String teacher_name = rs.getNString("teacher_name"); + int age = rs.getInt("age"); + System.out.println(id); + System.out.println(teacher_name); + System.out.println(age); + } + System.out.println("_______________"); + sql = "select * from teacher_info where id=1 and age = 35"; + rs = statement.executeQuery(sql); + + while (rs.next()){ + int id = rs.getInt("id"); + String teacher_name = rs.getNString("teacher_name"); + int age = rs.getInt("age"); + System.out.println(id); + System.out.println(teacher_name); + System.out.println(age); + } + + }catch (Exception e) { + e.printStackTrace(); + }finally { + try { + if (null != rs){ + rs.close(); + } + if (null != statement) { + statement.close(); + } + if (null != connection) { + connection.close(); + } + + }catch (Exception e){ + e.printStackTrace(); + } + + } + } + +} \ No newline at end of file