Skip to content

Commit 45ada95

Browse files
bjmashibingbjmashibing
committed
update
1 parent e8f36d7 commit 45ada95

29 files changed

+814
-172
lines changed

‎database/code/JDBC/.idea/workspace.xml‎

Lines changed: 117 additions & 172 deletions
Some generated files are not rendered by default. Learn more about customizing how changed files appear on GitHub.

‎database/code/JDBC/out/production/JDBC/Test.class‎

1.46 KB
Binary file not shown.

‎database/code/JDBC/out/production/JDBC/Test2.class‎

1.66 KB
Binary file not shown.

‎database/code/JDBC/src/Test.java‎

Lines changed: 18 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
1+
import java.sql.Connection;
2+
import java.sql.DriverManager;
3+
import java.sql.PreparedStatement;
4+
5+
public class Test {
6+
public static void main(String[] args) throws Exception{
7+
Class.forName("com.mysql.jdbc.Driver");
8+
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/db1","root","123456");
9+
PreparedStatement pstmt = conn.prepareStatement("insert into psn values(?,?)");
10+
for (int i = 0; i < 20000; i++) {
11+
pstmt.setInt(1,i);
12+
pstmt.setString(2,i+"");
13+
pstmt.addBatch();
14+
}
15+
pstmt.executeBatch();
16+
conn.close();
17+
}
18+
}

‎database/code/JDBC/src/Test2.java‎

Lines changed: 19 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
1+
import java.sql.Connection;
2+
import java.sql.DriverManager;
3+
import java.sql.PreparedStatement;
4+
5+
public class Test2 {
6+
public static void main(String[] args) throws Exception{
7+
long starttime = System.currentTimeMillis();
8+
Class.forName("com.mysql.jdbc.Driver");
9+
Connection conn = DriverManager.getConnection("jdbc:mysql://192.168.85.111:3306/sakila","root","123456");
10+
PreparedStatement pstmt = conn.prepareStatement("insert into userinfo(name) values(?)");
11+
for (int i = 0; i < 1000000; i++) {
12+
pstmt.setString(1,i+"");
13+
pstmt.addBatch();
14+
}
15+
pstmt.executeBatch();
16+
conn.close();
17+
System.out.println(System.currentTimeMillis()-starttime);
18+
}
19+
}

‎web前端/code/第三天/01JS语法书写规范.html‎

Lines changed: 18 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,18 @@
1+
<!DOCTYPE html>
2+
<html lang="en">
3+
4+
<head>
5+
<meta charset="UTF-8">
6+
<meta name="viewport" content="width=device-width, initial-scale=1.0">
7+
<meta http-equiv="X-UA-Compatible" content="ie=edge">
8+
<title>Document</title>
9+
</head>
10+
11+
<body>
12+
</body>
13+
14+
</html>
15+
<script>
16+
//这里面是要书写JS语法的地方
17+
alert("Hello word");
18+
</script>

‎web前端/code/第三天/02内置警告框函数alert使用.html‎

Lines changed: 26 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,26 @@
1+
<!DOCTYPE html>
2+
<html lang="en">
3+
4+
<head>
5+
<meta charset="UTF-8">
6+
<meta name="viewport" content="width=device-width, initial-scale=1.0">
7+
<meta http-equiv="X-UA-Compatible" content="ie=edge">
8+
<title>Document</title>
9+
</head>
10+
11+
<body>
12+
13+
</body>
14+
15+
</html>
16+
<script>
17+
//单行注释
18+
/*
19+
多行注释：可以写多行注释给同事们看
20+
工作当中尽量养成这个习惯
21+
*/
22+
//JS字符串：人说的话，务必加上双引号、单引号
23+
alert("我是祖国未来");
24+
alert("我们希望我们将来很好");
25+
alert('希望听贾老师的课程你们有收获');
26+
</script>

‎web前端/code/第三天/03内置提示框函数使用.html‎

Lines changed: 20 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,20 @@
1+
<!DOCTYPE html>
2+
<html lang="en">
3+
4+
<head>
5+
<meta charset="UTF-8">
6+
<meta name="viewport" content="width=device-width, initial-scale=1.0">
7+
<meta http-equiv="X-UA-Compatible" content="ie=edge">
8+
<title>Document</title>
9+
</head>
10+
11+
<body>
12+
13+
</body>
14+
15+
</html>
16+
<script>
17+
//提示框
18+
prompt("姑娘你的芳龄");
19+
prompt("小小兄弟你回家了吗", 66666);
20+
</script>

‎web前端/code/第三天/04控制台使用.html‎

Lines changed: 20 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,20 @@
1+
<!DOCTYPE html>
2+
<html lang="en">
3+
4+
<head>
5+
<meta charset="UTF-8">
6+
<meta name="viewport" content="width=device-width, initial-scale=1.0">
7+
<meta http-equiv="X-UA-Compatible" content="ie=edge">
8+
<title>Document</title>
9+
</head>
10+
11+
<body>
12+
13+
</body>
14+
15+
</html>
16+
<script>
17+
//控制台打印数据
18+
console.log("我在控制台中打印数据，你看不见我");
19+
console.log(12306);
20+
</script>

‎web前端/code/第三天/05基本数据类型数值五个.html‎

Lines changed: 37 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,37 @@
1+
<!DOCTYPE html>
2+
<html lang="en">
3+
4+
<head>
5+
<meta charset="UTF-8">
6+
<meta name="viewport" content="width=device-width, initial-scale=1.0">
7+
<meta http-equiv="X-UA-Compatible" content="ie=edge">
8+
<title>Document</title>
9+
</head>
10+
11+
<body>
12+
13+
</body>
14+
15+
</html>
16+
<script>
17+
//字符串（String）:字符串即为人说的话【务必加上双引号、单引号】
18+
console.log("我爱你JS");
19+
console.log("最近快过年了，回家要胖五进");
20+
//数字类型(Number):咱们小学学习数字
21+
console.log(100);
22+
console.log(-4.14);
23+
console.log(123456789);
24+
//布尔类型数值：true、false
25+
console.log(true);
26+
console.log(false);
27+
//未定类型数据
28+
console.log(undefined);
29+
//空对象类型
30+
console.log(null);
31+
</script>
32+
<script>
33+
//JS当中有一个关键字typeof可以检测数据类型
34+
console.log(typeof 123);
35+
console.log(typeof true);
36+
console.log(typeof undefined);
37+
</script>

0 commit comments

Comments
 (0)