Learning MySQL again: binlog
The major version number of the test is 5.7, and the minor version is 5.7.24. binlog is not enabled by default
Modify my.ini and add two new configurations:
# Open bin log
server-id=1
log-bin=mysql-bin
Table and data tested:
create table T(ID int primary key, c int);
update T set c=c+1 where ID=2;
Restart MySQL and find two more MySQL bin. ...
Added by satanclaus on Wed, 08 Jan 2020 16:22:22 +0200
C-encryption and decryption (DES\RSA) learning notes
This note is excerpted from: https://www.cnblogs.com/skylaugh/archive/2011/07/12/2103572.html Record the learning process for future reference.
Data encryption technology is the most basic security technology in the network, mainly through the data encryption of the information transmitted in the network to ensure its security, which is an acti ...
Added by EverToDesign on Sat, 04 Jan 2020 20:28:24 +0200
MongoDB permission management II
The mongodb configuration file is as follows:
[root@localhost ~]# cat /usr/local/mongodb/mongod.cnf
bind_ip = 0.0.0.0
logpath=/data/mongodb/logs/mongodb.log
logappend = true
fork = true
#auth = true
port = 6068
dbpath=/data/mongodb/data
pidfilepath=/data/mongodb/mongod.pid
root super administrator privileges:Close mongod.cnf profile parameter ...
Added by Vizor on Fri, 03 Jan 2020 03:00:43 +0200
Hibernate environment configuration mapping database SQL server, Mysql database, test correct
Recently, I have to digest a little more knowledge. I write notes in my blog for easy viewing
You can download the hibernate jar package you need on the official website
Configuring Sqlserver database in Hibernate
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernat ...
Added by PHPMagician on Thu, 02 Jan 2020 01:53:46 +0200
Nine built-in objects and scopes of jsp
1. pageContext saves data in only one page
<body>
<%
// Set the data key - > value of two page ranges
pageContext.setAttribute("name","page Wang Er Xiao");
pageContext.setAttribute("age",12);
%>
<%
// Value
String name=(String)pageContext.getAttribute("name");
int age=(Integer)pageContext.getAttribute(" ...
Added by vexious on Thu, 02 Jan 2020 00:30:39 +0200
iOS QR code scanning Swift
Realize camera scanning QR code, photo album selects image recognition QR code
I. import framework
import AVFoundation//QR code scanning
import CoreImage//QR code recognition
import AudioToolbox//system sound
2, Compliance with agreement
AVCaptureMetadataOutputObjectsDelegate//Scan QR code
CALayerDelegate// CALayer drawi ...
Added by vlcinsky on Sat, 28 Dec 2019 21:15:12 +0200
Simple implementation of login interception and unified exception handling (custom exception)
webmvc configuration class:
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport{
@Override
protected void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(new LoginInterceptor())
.addPathPatterns("/**")
.excludePathPatterns("/user/login")；
}
}
Note: registry. ...
Added by chadbobb on Tue, 24 Dec 2019 19:06:43 +0200
Spring Security SMS verification code login in Spring Boot
In the section of adding graphic verification code in Spring Security, we have implemented the account password login based on Spring Boot + Spring Security, and integrated the function of graphic verification code. At present, another very common way of website login is SMS authentication code login, but Spring Security only provides the login ...
Added by Thoughtless on Tue, 24 Dec 2019 06:00:15 +0200
Adding graphic verification code to Spring Security in Spring Boot
Adding the verification code can be roughly divided into three steps: generating the verification code picture according to the random number; displaying the verification code picture on the login page; adding the verification code verification in the authentication process. The authentication verification of Spring Security is completed by the ...
Added by Baumusu on Mon, 23 Dec 2019 11:54:25 +0200
Android silent installation implementation
There are many schemes for Android silent installation, such as using ProcessBuilder or Runtime.getRuntime().exec() to run the PM istall command, but this method needs su first, root permission, or reflection to get PackageManager.installPackage(), which is also cumbersome to use. At the same time, system permission needs to be ...
Added by Drebin on Mon, 16 Dec 2019 18:37:57 +0200