In the process of interface testing, I wrote a string replacement method to handle parameter splicing of get interface, and then optimized this method, which is compatible with Chinese character prompting for illegal characters, using the urlencode method that comes with java.Include the first method, which was previously passed by json.Share t ...
Posted on Mon, 23 Sep 2019 19:53:39 -0700 by MrAlaska
1. Creating DataFrame and Dataset
1.1 Create DataFrame
The entry point for all functions in Spark is SparkSession, which can be created using SparkSession.builder(). Once created, the application can create a DataFrame from an existing RDD, Hive table, or Spark data source. Examples are as follows:
val spark = SparkSession.builder().appName("S ...
Posted on Mon, 23 Sep 2019 08:14:31 -0700 by Vibralux
mysql json column
## Use scenarios
When we create tables, we are always used to reserve more columns in order to prevent future demand increases or changes. If we add columns of tables, we lock tables in a very large amount of data. But if we add associated tables, queries will slow down. Most of the ...
Posted on Mon, 23 Sep 2019 02:52:28 -0700 by azaidi7
Analysis of QQ Music Website
1. Analysis of Song Information InterfaceThrough QQ music search for designated singers or songs, the page data resources are analyzed.Press the f12 Developer Tool, click on the network to find the page data interfaceCopy the interface address to the postman tool for reque ...
Posted on Mon, 23 Sep 2019 02:01:41 -0700 by tonga
Vue+Nodejs to Upload Pictures
Picture upload should be considered as a standard requirement in normal business development. Here we share the simple implementation of this requirement using Vue and Nodejs.
Flow charts (simple drawing)
Create a simplest Vue project using vue-cli
Ensure that vue cli is up-to-date and that if you are unsure you c ...
Posted on Mon, 23 Sep 2019 00:27:25 -0700 by Mirage
9102, if you don't know react yet, I hope this article can help you quickly understand the basics of react.js.
Use create-react-app Tools quickly create React SPA s.
# Create Project
yarn create react-app my-app
# Run program in development mode
Initial project structure:
Posted on Sun, 22 Sep 2019 09:12:04 -0700 by tekken00
Why do we need a scaffold?
For me personally, I often write demo or a new project, either copy the previous project template, or rebuild it, which is more troublesome and time-consuming, so I have a scaffold to meet my needs.
The effect of scaffolding
This is a basic scaffold, init a project, enter the project name, version number and other in ...
Posted on Sun, 22 Sep 2019 07:03:47 -0700 by wellscam
Role: With the @Controller annotation, indicate that this class is a controller class, that is, a controller class, that needs to be scanned by spring and then injected into the IOC container to be managed as a Spring Bean so that Spring can find the Controller class and proces ...
Posted on Sat, 21 Sep 2019 22:36:11 -0700 by ITEagle03
A common use of selenium is to skip login through cookie s and to verify images / text messages / validation codes, etc., to be in the login state directly.
It seems simple, but there are always problems with cookie s.
First of all, we tested it with bean flakes. The whole idea is:
1. First use se ...
Posted on Sat, 21 Sep 2019 01:12:51 -0700 by dubrubru
Chain customer, specially for developers, there are questions to answer!
This article is from Block Chain Technology Community No reprinting without permission.
miner.start()Miner means miner. The miner's job is to "dig". Mining is the process of encapsulating a series of newest transactions not encapsulated in blocks into a new block ...
Posted on Thu, 19 Sep 2019 23:23:02 -0700 by garethj