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This paper Original link Click here to get Chinese document of Etherscan API (full version) The layout of the whole content is better, and readers are recommended to read it. Smart contracts Please refer to the API related to the smart contract and the parameter description of the interface. Etherscan API conventions , not described separatel ...

What is an API gateway: In a microservice architecture, there are usually multiple service providers. Imagine an e-commerce system, which may have multiple types of services, such as goods, orders, payments, users, etc., and the number of services of each type will also grow and change with the increase of the whole system volume. As the UI sid ...

By Valentino GagliardiTranslator: front-end wit Source: valentinog Last month, I spent 1300 yuan to buy Alibaba's server to learn node and its corresponding framework. Before the 11th, they had activities. The configuration of 1300 now costs only 86 yuan a year and 229 yuan for three years. I really think it's cost-effective. You can click the ...

Old design When developing an api, you need to define the data response result of the interface first. Here is a very simple and direct Controller implementation method and response result definition @RestController @RequestMapping("/users") public class UserController { @Inject private UserService userService; @GetRequest("/{user ...

1. The inventory of ansible resources is dynamic. The script specification states that you need to implement the -- list, - host option and output json data. 1. List output: [root@master_101 ansible]# ./dy_host.py --list {     "all": [         "192.168.8.101",         "192.168.8.102"     ],     "web": {         "hosts": [             "192.168. ...

I saw the guidance of integrating GraphQL in the document of Nest.js, so I wrote a DEMO with Koa first, and then integrated with Nest.js. Write out the database model first (this file exists before, and has not been changed. Change the file name to models.ts): /** * Created by w on 2018/4/13. */ const mongoose = require('mongoose'); mongoose ...

Recently, I made such a 406 mistake when I followed the Taotao mall project.This is the code in the Controller @RequestMapping("/items/{itemId}") @ResponseBody public TbItem getItemById(@PathVariable long itemId) { TbItem item=itemService.findItemById(itemId); return item; } This is the ...

xlrd xlrd is a third-party module used to read excle tables in python. Many enterprises use tables to manage data before using computer management, so importing tables is very common! Install xlrd pip install xlrd Analysis of excel structure An excle table contains multiple sheet s A sheet contains multiple rows and columns E ...

Catalog Usage method Official website Picture upload and download example Menu bar function filter Catalog Usage method Just bind events directly to the input box. Note that the introduction of js is a little different. Add more coding methods. <script charset="utf-8" src="/editor/kindedi ...

Preface With the increase of the company's product lines, there are more and more development and maintenance projects. In the process of business development, it will be found that cookie processing, array processing, throttling and anti shake functions and other tool functions are often used in many projects. In order to avoid the low operati ...