In the project, if you want to call a third-party http service, you need to initiate an http request. Common request methods: The first one is to use java natively to initiate an http request. This method does not require the introduction of a third-party library, but the connection cannot be reused. , if you […]
Tag: rest
How does the front end prevent data from being abnormally tampered with and restore the data?
Every day, we deal with various documents, such as PRD, technical solutions, personal notes, etc. In fact, there is a lot of knowledge in document formatting. Just like me, I have obsessive-compulsive disorder about formatting, and I can’t bear to not add spaces between English and Chinese. Therefore, I have recently been working on a […]
06丨Database Principle: Why is PrepareStatement better and more secure?
Students who do application development often think that the database is operated and maintained by the DBA, and it is enough that they can write SQL. There is no need to learn database principles. In fact, even writing SQL requires understanding of database principles. For example, we all know that SQL query conditions should include […]
[C++ Code] Collecting rainwater, the nearest larger element, the largest matrix in the histogram, monotonic stack–Code Thoughts
Topic: Daily Temperature Given an integer array temperatures, representing the daily temperature, return an array answer, where answer[i] refers to the temperature for the first i days, with the next higher temperature occurring a few days later. If the temperature is not going to rise after this, use 0 instead. Brute force solution, two levels […]
What are some interesting Python codes?
A programmer who is not doing his job properly, a young man who doesn’t want to lie down. There are so many things that Python can do. Here are a few small projects that I personally find interesting. Each one is super practical and can be run as soon as you take it! 0. Convert […]
Three [3], region of interest ROI
1, Introduction ROI, region of interest, captured image 2, Obtaining method Method 1: Using Rect cv::Mat src=cv::imread(“*.bmp”);//Read the original image cv::Mat matROI = src(cv::Rect(100,200,50,100));//Capture the original image, rectangular area Method 2: Use Range cv::Mat src=cv::imread(“*.bmp”);//Read the original image cv::Mat matROI = src(cv::Range(100,150),cv::Range(200,300));//Capture the original image, rectangular area 3, Image overlay Note: The copyTo function, clone […]
Xiyou Linux Interest Group accepts new questions for 2023
Newcomers accepted in 2023 0. I, Rat Rat, am going to be in trouble. 1. Make a prediction first~ 2. Welcome to the Linux Interest Group 3. Is everything doubled? 4. Strange output 5. Functions that you don’t want to see at first glance 6. Custom filtering 7. Static state… 8.Help! pointer! 9.Why not loop […]
postman interface testing-Restful interface development and testing
After developing the interface, we need to test the interface we developed. There are many methods for interface testing. You can use interface tools or Python to test. Tools such as Postman or Jmeter that we have learned before, and Python script testing can use Requests + unittest to test. Test ideas Functional testing: addition, […]
Revealing the secret of presto plug-in mechanism: exploring the infinite possibilities of data processing stage
Article directory 1 Introduction 2. Presto plug-in architecture 3. Plugin interface 3.1 Plug-in Agreement 3.2 Plug-in implementation class 4. Plug-in loading process 4.1 PluginManager 5. Plug-in application 6. Summary Keywords: Presto Plugin 1. Preface Source code environment of this article: presto: prestoDb version 0.275 Plug-in mechanism design is a very common and powerful extension method […]
[Restrict input box value type] Custom instruction el-input input type restriction, vue and html versions
Foreword We often encounter input boxes that need to be restricted to numbers. Because the user is outrageous, he insists on entering English or Chinese where the numbers are clearly entered. However, it is more troublesome to use the UI framework or write your own methods to verify the form. It is very troublesome to […]