Spring Boot Series--spring security (database-based) login and permission control

Let's talk first. Authconfig.java one of the main configuration files for Spring security authconfig 1 @Configuration 2 @EnableWebSecurity 3 public class Authconfig extends Websecurityconfigureradapter {4 @Override 5 protected void Configure

SQL Compaction Basics (i): differences between inner join, outer join, and Cross join

first, data constructionFirst build the table, then talk.Create DatabaseTest UseTestCreate TableA (AIDint Identity(1,1)Primary Key, namenvarchar( -), ageint)Create TableB (BIDint Identity(1,1)Primary Key, namenvarchar( -), Genderint)After creation,

Python3 using SQLAlchemy to connect to a database

Installation Configuration mariadbYum install mariadb mariadb-server mariadb-develcreate database first_sqlalchemy charset utf8;grant all privileges on Firs t_sqlalchemy.* to ' Heboan ' @ ' percent ' identified by ' 123456 '; flush privileges; Info:

cmd command-line window operation SqlServer2012 method

Be careful to install SqlServer2012 before you do the following.1. Open the CMD Command Line window and enter the SQL-S service name. Can directly open the database server (no password), note that this is logged on to the local database server, the

Database query Operations (FETCHONE,FETCHALL)

database Query OperationsPython queries MySQL uses the Fetchone () method to get a single piece of data, using the Fetchall () method to get multiple data. Fetchone (): This method gets the next query result set. The result set is an object

using with as in SQL improves performance-simplifies nested SQL using common table expressions (CTE)

A Meaning of with ASThe with as phrase, also called the subquery section (subquery factoring), allows you to do many things, defining a SQL fragment that will be used by the entire SQL statement. Sometimes it is to make the SQL statement more

About achieving rope physics in Unity Ultimate+rope+editor plug-in parsing

ultimate+rope+editor+1.18 Rope Plugin Learning documentPlugin sharing:Links: Https://pan.baidu.com/s/1i6VzCupPassword: A4eoFirst, the Rope main Control Script Component Ultimate Rope1.Rope layer: set layers of ropes 2.Rope physic Material: rope

Jsch jar package not connected to SSH algorithm negotiation fail error

error message:Com.jcraft.jsch.JSchException:Algorithm Negotiation FailProblem Analysis:The sshd configuration does not open an algorithm that supports Jsch jar requirements, the default open algorithm can be seen in the man sshd_config, it is

"Assembly Language (3rd edition) Wang Shuang" question 7.9 code

assume CS:CODESG, SS:STACKSG, DS:DATASGSTACKSG segment DW0,0,0,0,0,0,0,0STACKSG ENDSDATASG Segment DB'1. Display'DB'2. Brows'DB'3. Replace'DB'4. Modify'datasg endscodesg segmentstart:mov AX,DATASG mov ds,ax mov ax,stacksg mov ss,ax mov b X,0mov

Jconsole Monitoring Remote Spring boot program

Monitor Java programs to increase startup parametersJava \-djava.rmi.server.hostname=192.168.1.97 \-dcom.sun.management.jmxremote \-dcom.sun.management.jmxremote.port=1099 \-dcom.sun.management.jmxremote.authenticate=false

Spring transaction propagation properties and isolation levels

1 propagation properties of a transaction (propagation)1) REQUIRED, this is the default propertySupport A current transaction, create a new one if none exists.If there is a transaction, the current transaction is supported. If there is no

[Kit Kat Kinky] Test array assignment

// first line to copy and paste crawler [authorized by Winways]typedef unsigned char BYTE#define assgin (A, ...) Assginarr (A, # #__VA_ARGS__)voidAssginarr (unsignedChar*_des, ...) { inti =0; Va_list apptr; Va_start (Apptr, _des); //int*

Python3----operator

1. Arithmetic operators Division operation, Integer/integer = integer, floating-point/integer = floating-point number, integer/float = floating-point: >>> 17/35>>> 17/3.05.666666666666667>>> 17.0/35.666666666666667>>>

Spring Cloud Zipkin Sleuth, when combined with spring boot AOP, starts slow

Problem Description:The spring Cloud monitoring starter was introduced to introduce Jooq indirectly.Also introduced theSpring-boot-starter-web, so indirect introduction of AOP.After referring to the following information:https://github.com/jOOQ/jOOQ/

Python3 Serialization Module (JSON, Pickle, shelve)

Serialization modulePurpose of serialization1. Persist the custom object in some form of storage;2. Transfer objects from one place to another. 3, make the program more maintenance. 1.jsonThe JSON module provides four functions: dumps, dump, loads,

Second, NumPy base: Array modification

One, array properties Dimension:. Ndim, returning the current array dimension Type:. Dtype, which returns the data type of the elements in the array, note: The array data type defined by NumPy is uniform and cannot be mixed in multiple

Window command to view port occupancy, corresponding process, kill process, etc. through CMD

How to view the ports that the program occupiesOne, view the ports that are occupied by all processesAt the start-run-cmd, enter: Netstat–ano to view all processesSecond, view the program that occupies the specified portWhen you are using Tomcat to

Ansible Test for API 2.0

Because the project needs to use to the Ansible API, according to modify the official documents provided by the use of examples, after many tests, will be able to use the code to share to everyone, you just need to modify the code according to their

Packet Tracer6.0 Static Routing, rip routing, ospf routing configuration, tracer6.0ospf

Packet Tracer6.0 Static Routing, rip routing, ospf routing configuration, tracer6.0ospf OSPF Dynamic Route configuration Scheme First, we cleared the RIP configuration information configured in the router in the previous article. R1.R2. R3 cleared

Diagram of vswitch interfaces and connection skills

Diagram of vswitch interfaces and connection skillsIn our impression, a switch is a network device connected to a LAN node. In fact, it also exists in the Wide Area Network and is widely used, especially in telecom operators, ATM switches and

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