java calls alicloud to implement the whole process of SMS verification code

java implementation of mobile phone verification code function First, enter the preparation work and log in to alicloud https://www.aliyun.com/ Select domestic messages on the left side of the search SMS console Adding a signature on the right side will have an audit process, as long as it meets ...

Posted by johnbest on Sat, 13 Jun 2020 02:31:10 -0700

VSCode installation, ECMAScript 6 syntax

Article catalog Front end development VSCode Initial settings 1. Chinese interface configuration 2. Plug in installation 3. Create project 4. Save workspace 5. New folders and pages 6. Preview web page 7. Set font ...

Posted by VisionsOfCody on Sat, 13 Jun 2020 01:59:37 -0700

Ordering system - buyer side - order

Article catalog DAO layer design Service layer design Controller layer design DAO layer design 1. Write two entity classes, OrderMaster and OrderDetail. Because it involves the update of the order modification time, add the annotation @ DynamicUpdate, that is, modify the time data during the upd ...

Posted by joshmaker on Fri, 12 Jun 2020 21:32:50 -0700

AJAX and JSON (java review day19)

I. AJAX 1. Concepts: Asynchronous JavaScript and XML a, Asynchronous and Synchronous (based on communication between client and server) 1. Clients must wait for a response from the server and cannot do anything else while waiting 2, the client does not need to wait for a response from the server, and ...

Posted by rscott7706 on Fri, 12 Jun 2020 18:06:27 -0700

Data insight | Python interpretation stall - do you want to set up a stall to sell anything?

I know there is a problem: after the epidemic, what is the most thing you want to do? Many people study python and don't know where to start.Many people learn python, master the basic syntax, do not know where to find cases to start. Many people who have already done cases do not know how to learn m ...

Posted by titel on Fri, 12 Jun 2020 02:21:10 -0700

WeChat official account local development process

1. Establish test number Open the link directly and log in with wechat scanning code to test number management page https://mp.weixin.qq.com/debug/cgi-bin/sandboxinfo?action=showinfo&t=sandbox/index , as shown in the figure below       2. in the test number, the callback address IP (localhost,127.0.0.1) is not available. The LAN IP o ...

Posted by kanika on Fri, 12 Jun 2020 01:27:07 -0700

Some problems of writing interface with mongoose to swagger

Before there was a project, the leader said that I used mongoose to swagger to write down the back-end interface. Although I had not written the back-end interface before, I wanted to have colleagues and accepted the work happily. First to ask colleagues, and then... Have not used; so Baidu to see if there is a relevant tutorial 😭 , well, it's ...

Posted by Gorillas on Thu, 11 Jun 2020 22:56:59 -0700

JSON Foundation: Instructions for using fastjson

Fastjson has been a popular issue recently, but as a widely used library of Json, it is still an important choice for many developers along with Gson and Jackson. Even from a security point of view, it is necessary to understand how fastjson is used in order to replace it. This article is a simple summ ...

Posted by storyboo on Thu, 11 Jun 2020 17:42:21 -0700

Building neural network model with Python and Numpy

1: Boston house price forecast task In the previous section, we have a preliminary understanding of the basic concepts of neural networks (such as neurons, multi-layer connections, forward computing, calculation charts) and three elements of model structure (model hypothesis, evaluation function and ...

Posted by ~n[EO]n~ on Wed, 10 Jun 2020 20:33:04 -0700

JMH: a necessary tool for performance tuning

if fast or switch fast? Do you want to specify the initialization size of HashMap? How much performance can be improved after it is specified? Which serialization method takes less time? No matter what the reason is, it is necessary to evaluate the performance. In most cases, it is not enough to simply answer who is fast and who is slow. How to ...

Posted by bluebyyou on Wed, 10 Jun 2020 19:45:42 -0700