From be2110ec41aeb008797c7ced297cbca515d1ee99 Mon Sep 17 00:00:00 2001 From: Administrator <2823455505@qq.com> Date: Wed, 29 May 2024 17:17:32 +0800 Subject: [PATCH 1/4] =?UTF-8?q?feat:=E6=8F=90=E4=BA=A4=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../JdbcDemo.java" | 10 ++---- .../JdbcDemo2.java" | 31 +++++++++++-------- .../jdbcDemo3.java" | 28 ++++++++++------- 3 files changed, 37 insertions(+), 32 deletions(-) diff --git "a/work/com/java/minxi/java_20240524/java_2302_\351\231\210\346\204\210_2344310237/JdbcDemo.java" "b/work/com/java/minxi/java_20240524/java_2302_\351\231\210\346\204\210_2344310237/JdbcDemo.java" index 859ec62..ee0bb01 100644 --- "a/work/com/java/minxi/java_20240524/java_2302_\351\231\210\346\204\210_2344310237/JdbcDemo.java" +++ "b/work/com/java/minxi/java_20240524/java_2302_\351\231\210\346\204\210_2344310237/JdbcDemo.java" @@ -2,25 +2,19 @@ package com.java.minxi.java_20240524.java_2302_陈愈_2344310237; import java.sql.Connection; import java.sql.DriverManager; - - import java.sql.Statement; public class JdbcDemo { public static void main(String[] args) throws Exception { - Connection connection = null; - Statement statement = null; - - Class.forName("com.mysql.cj.jdbc.Driver"); String url = "jdbc:mysql://localhost:3306/student?severTimezone=Asia/Shanghai"; String username = "root"; String password = "123456"; - connection = DriverManager.getConnection(url, username, password); + Connection connection = DriverManager.getConnection(url, username, password); String sql = "update teacher_info set user_name ='小严' where id = 1;"; - statement = connection.createStatement(); + Statement statement = connection.createStatement(); int rs = statement.executeUpdate(sql); if (rs > 0) { System.out.println("执行成功"); diff --git "a/work/com/java/minxi/java_20240524/java_2302_\351\231\210\346\204\210_2344310237/JdbcDemo2.java" "b/work/com/java/minxi/java_20240524/java_2302_\351\231\210\346\204\210_2344310237/JdbcDemo2.java" index 5769fae..d584a0c 100644 --- "a/work/com/java/minxi/java_20240524/java_2302_\351\231\210\346\204\210_2344310237/JdbcDemo2.java" +++ "b/work/com/java/minxi/java_20240524/java_2302_\351\231\210\346\204\210_2344310237/JdbcDemo2.java" @@ -2,30 +2,35 @@ package com.java.minxi.java_20240524.java_2302_陈愈_2344310237; import java.sql.Connection; import java.sql.DriverManager; +import java.sql.ResultSet; import java.sql.Statement; public class JdbcDemo2 { public static void main(String[] args) throws Exception { - Connection connection = null; - Statement statement = null; - - Class.forName("com.mysql.cj.jdbc.Driver"); String url = "jdbc:mysql://localhost:3306/student?severTimezone=Asia/Shanghai"; String username = "root"; String password = "123456"; - connection = DriverManager.getConnection(url, username, password); - String sql = "select * from TABLE ( teacher_info );"; - statement = connection.createStatement(); - int rs = statement.executeUpdate(sql); - if (rs > 0) { - System.out.println("执行成功"); - } else { - System.out.println("执行失败"); + Connection connection = DriverManager.getConnection(url, username, password); + String sql = "select * from teacher_info where id =1 and teacher_age =35;"; + Statement statement = connection.createStatement(); + ResultSet resultSet = statement.executeQuery(sql); + System.out.println("id为1，且年龄为35岁的用户:"); + System.out.println("id\t\tteacher_name\tteacher_age"); + while (resultSet.next()){ + int id = resultSet.getInt(1); + String name = resultSet.getString(2); + int age = resultSet.getInt(3); + System.out.println(id+"\t"+name+"\t"+age); } + System.out.println(); + + resultSet.close(); statement.close(); connection.close(); + } + } -} + diff --git "a/work/com/java/minxi/java_20240524/java_2302_\351\231\210\346\204\210_2344310237/jdbcDemo3.java" "b/work/com/java/minxi/java_20240524/java_2302_\351\231\210\346\204\210_2344310237/jdbcDemo3.java" index 31fa13f..180b908 100644 --- "a/work/com/java/minxi/java_20240524/java_2302_\351\231\210\346\204\210_2344310237/jdbcDemo3.java" +++ "b/work/com/java/minxi/java_20240524/java_2302_\351\231\210\346\204\210_2344310237/jdbcDemo3.java" @@ -2,29 +2,35 @@ package com.java.minxi.java_20240524.java_2302_陈愈_2344310237; import java.sql.Connection; import java.sql.DriverManager; +import java.sql.ResultSet; import java.sql.Statement; public class jdbcDemo3 { public static void main(String[] args) throws Exception { - Connection connection = null; - Statement statement = null; Class.forName("com.mysql.cj.jdbc.Driver"); String url = "jdbc:mysql://localhost:3306/student?severTimezone=Asia/Shanghai"; String username = "root"; String password = "123456"; - connection = DriverManager.getConnection(url, username, password); - String sql = "select * from teacher_info where id = 1 && teacher_age = 35;"; - statement = connection.createStatement(); - int rs = statement.executeUpdate(sql); - if (rs > 0) { - System.out.println("执行成功"); - } else { - System.out.println("执行失败"); + Connection connection = DriverManager.getConnection(url, username, password); + String sql = "select * from teacher_info "; + Statement statement = connection.createStatement(); + ResultSet resultSet = statement.executeQuery(sql); + + System.out.println("所有用户信息:"); + System.out.println("ideacher_nameteacher_age"); + while (resultSet.next()){ + int id = resultSet.getInt("id"); + String name = resultSet.getString("teacher_name"); + int age = resultSet.getInt("teacher_age"); + + System.out.println(id+"\t"+name+"\t"+age); } + System.out.println(); + resultSet.close(); statement.close(); connection.close(); - } } + -- Gitee From 66a019765ce8e5a283f196542da2dd11664d1c39 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E9=AB=98=E8=80=80?= <1849490683@qq.com> Date: Tue, 4 Jun 2024 15:35:44 +0800 Subject: [PATCH 2/4] =?UTF-8?q?feat:=E6=8F=90=E4=BA=A4=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../Demo.jsp" | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 "work/com/java/minxi/java_20240531/java_2302_\351\231\210\346\204\210_2344310237/Demo.jsp" diff --git "a/work/com/java/minxi/java_20240531/java_2302_\351\231\210\346\204\210_2344310237/Demo.jsp" "b/work/com/java/minxi/java_20240531/java_2302_\351\231\210\346\204\210_2344310237/Demo.jsp" new file mode 100644 index 0000000..166b119 --- /dev/null +++ "b/work/com/java/minxi/java_20240531/java_2302_\351\231\210\346\204\210_2344310237/Demo.jsp" @@ -0,0 +1,17 @@ +<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> + + + + 页面标题 + + + +

Hello, World!

+ + + <% + int number = 10; + out.println("Number is: " + number); + %> + + -- Gitee From 6543ce527b6ecb0ea7e846f74d2e86323cf6227e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E5=AF=8C=E5=BC=BA=E6=B0=91=E4=B8=BB=E6=96=87=E6=98=8E?= =?UTF-8?q?=E5=92=8C=E8=B0=90?= <2823455505@qq.com> Date: Wed, 5 Jun 2024 10:35:03 +0800 Subject: [PATCH 3/4] =?UTF-8?q?feat:=E6=8F=90=E4=BA=A4=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../Demo.jsp" | 17 -------- .../Text.jsp" | 42 +++++++++++++++++++ 2 files changed, 42 insertions(+), 17 deletions(-) delete mode 100644 "work/com/java/minxi/java_20240531/java_2302_\351\231\210\346\204\210_2344310237/Demo.jsp" create mode 100644 "work/com/java/minxi/java_20240531/java_2302_\351\231\210\346\204\210_2344310237/Text.jsp" diff --git "a/work/com/java/minxi/java_20240531/java_2302_\351\231\210\346\204\210_2344310237/Demo.jsp" "b/work/com/java/minxi/java_20240531/java_2302_\351\231\210\346\204\210_2344310237/Demo.jsp" deleted file mode 100644 index 166b119..0000000 --- "a/work/com/java/minxi/java_20240531/java_2302_\351\231\210\346\204\210_2344310237/Demo.jsp" +++ /dev/null @@ -1,17 +0,0 @@ -<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> - - - - 页面标题 - - - -

Hello, World!

- - - <% - int number = 10; - out.println("Number is: " + number); - %> - - diff --git "a/work/com/java/minxi/java_20240531/java_2302_\351\231\210\346\204\210_2344310237/Text.jsp" "b/work/com/java/minxi/java_20240531/java_2302_\351\231\210\346\204\210_2344310237/Text.jsp" new file mode 100644 index 0000000..27b52af --- /dev/null +++ "b/work/com/java/minxi/java_20240531/java_2302_\351\231\210\346\204\210_2344310237/Text.jsp" @@ -0,0 +1,42 @@ +<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %> + + + jsp页面 + + +

这是一个简单的jsp页面

+<%! + public class Animal{ + public String sleep(int time){ + + return "一只动物在睡觉"; + } + } + public class Cat{ + public String name; + public int time; + public String sleep(int time){ + return"一只"+this.name+"睡了"+time+"个小时"; + } + } +%> +

<% + Animal animal = new Animal(); + out.println(animal.sleep(20)); +%>

+

<% + Cat cat = new Cat(); + cat.name="汤姆猫"; + out.print(cat.sleep(10)); +%>

+ +<% + for (int i = 1; i < 9; i++) { + for (int j = 1; j <=i ; j++) { + System.out.println(i*j); + } + } +%> + + + \ No newline at end of file -- Gitee From a90c389a0906600029dfbf072c10f5ed733c1668 Mon Sep 17 00:00:00 2001 From: Administrator <2823455505@qq.com> Date: Wed, 5 Jun 2024 17:39:13 +0800 Subject: [PATCH 4/4] =?UTF-8?q?feat:=E6=8F=90=E4=BA=A4=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../Circle.jsp" | 24 +++++++++++++++++++ .../Ladder.jsp" | 22 +++++++++++++++++ .../Main.jsp" | 11 +++++++++ 3 files changed, 57 insertions(+) create mode 100644 "work/com/java/minxi/java_20240605/java_2302_\351\231\210\346\204\210_2344310237/Circle.jsp" create mode 100644 "work/com/java/minxi/java_20240605/java_2302_\351\231\210\346\204\210_2344310237/Ladder.jsp" create mode 100644 "work/com/java/minxi/java_20240605/java_2302_\351\231\210\346\204\210_2344310237/Main.jsp" diff --git "a/work/com/java/minxi/java_20240605/java_2302_\351\231\210\346\204\210_2344310237/Circle.jsp" "b/work/com/java/minxi/java_20240605/java_2302_\351\231\210\346\204\210_2344310237/Circle.jsp" new file mode 100644 index 0000000..1958b19 --- /dev/null +++ "b/work/com/java/minxi/java_20240605/java_2302_\351\231\210\346\204\210_2344310237/Circle.jsp" @@ -0,0 +1,24 @@ +<%@ page import="java.util.Scanner" %> +<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %> + + + + + + + +
+

+<% +out.print("圆的面积为:"+200*200+"mm"); +%> +

+ + \ No newline at end of file diff --git "a/work/com/java/minxi/java_20240605/java_2302_\351\231\210\346\204\210_2344310237/Ladder.jsp" "b/work/com/java/minxi/java_20240605/java_2302_\351\231\210\346\204\210_2344310237/Ladder.jsp" new file mode 100644 index 0000000..55e20c9 --- /dev/null +++ "b/work/com/java/minxi/java_20240605/java_2302_\351\231\210\346\204\210_2344310237/Ladder.jsp" @@ -0,0 +1,22 @@ +<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %> + + + + + + + +
+ + + \ No newline at end of file diff --git "a/work/com/java/minxi/java_20240605/java_2302_\351\231\210\346\204\210_2344310237/Main.jsp" "b/work/com/java/minxi/java_20240605/java_2302_\351\231\210\346\204\210_2344310237/Main.jsp" new file mode 100644 index 0000000..de9843c --- /dev/null +++ "b/work/com/java/minxi/java_20240605/java_2302_\351\231\210\346\204\210_2344310237/Main.jsp" @@ -0,0 +1,11 @@ +<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %> + + + + + + +<%@ include file="Circle.jsp" %> +<%@ include file="Ladder.jsp" %> + + \ No newline at end of file -- Gitee