Programmer Group

Development tool preparation Development tool: idea2017 up Dependency management: Maven 3 or above JDK: above 1.8 Creating a Spring project using Maven Select MavenCheck Create from archetypeSelect Maven archetype QuickStart Created successfully Creating a Spring project using Java Enterprise Default Version generally selects Java ...

preface I don't know what to write in this preface. Let's encourage each other. 1, KeyFrame In short: a key frame is a representative of several ordinary frames. 1. Function and significance Reduce the information redundancy in local adjacent key frames;In SLAM scheme, the depth of ordinary frame will be projected onto the key fr ...

kubernetes deploying persistent jenkins System environment: System version: CentOS 8.1 k8s version: v1.21.3 Containerd version: ctr containerd.io 1.4.3 jenkins version: 2.172 1, Set storage directory Persist Jenkins to storage. NFS network storage is used here to facilitate consistent escape data of application startup nodes in Kubernetes envi ...

  1. Module introduction 1.1 what is a module When writing a long program, it is recommended to use a text editor instead of an interpreter to execute the input in the file, which is writing   script  . As the program gets longer and longer, in order to facilitate maintenance, it is best to split the script into multiple files. ...

A Serializer serializer effect: serialize,The serializer converts the model object into a dictionary,after response Later become json character string Deserialization,Send the data sent by the client,after request Later become a dictionary,Serializers can turn dictionaries into models Deserialization,Complete data verification function 1.1 ...

SpringSecurity Safety should be considered at the beginningFunction permissions, access permissions and menu permissions all require certain rules to configure security rules Remember several classes: WebSecurityConfigurerAdapter: custom Security policyAuthenticationManagerBuilder: custom authentication policy@Enable WebSecurity: enable WebS ...

preface Through the mid-term report and exchange meeting, the author has a deep understanding of Subset business process; At the same time, I also have an understanding of some misunderstandings in the early stage. This article is to update Subset business analysis and correct misunderstandings. 1. Subset is not load balancing Bri ...

preface: In fact, I just want to understand the construction principle of the Filter linked list in the spring cloud gateway and the timing of injection into the Bean. If the dynamic injection Filter is a Bean, what timing injection will take effect by default. If it cannot take effect for what reason, which method classes can be forced to ...

Today's article tells you a story and process of tracking down bugs. I have always believed that if something goes wrong, there must be demons, and so is the Bug in the program. I hope that through this Bug troubleshooting story, we can not only learn a series of knowledge points, but also learn how to solve problems and how to do things more ...

1. Output statements and semicolons 1.1 output statement Mode 1: line feed output format: println(Write the data you want to print to the console); Mode 2: output without line feed format: print(Write the data you want to print to the console); Note: multiple values can be printed at the same time regardless of println() or print() ...