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MongoDB Basic Installation Overview of MongoDB (1) MongoDB is a database based on distributed file storage.Written in C++.Designed to provide scalable high performance data storage solutions for WEB applications. (2) MongoDB is a product between relational and non-relational databases, which is the most rich and similar to relational databases ...

First, enter the folder of the installation directory, enter npm init initialization package.json: To install webpack and webpack cli locally: NPM install webpack webpack cli - D / / - D refers to the development environment needs, online environment does not need; Create an entry file, configure packet.json for packaging ...

Take a look at the great God's article:Using Gson to parse complex JSON data Build dependency first implementation'com.google.code.gson:gson:2.8.0' Then get the json data according to the api { "status": "1", "info": "OK", "infocode": "10000", "count": "1", "geocodes": [ { "formatted_address": "Shenzhen ...

Direct code HTML page code:   < label > resource URL < / label > <input type="text" class="form-control" id="txtSourceURL" name="txtSourceURL" Ng model = "editdata. Sourceurl" placeholder = "resource URL" ng MaxLength = "500" ><! -- file address display -- > 　　 < butto ...

Delegation mode is a behavioral mode. The principle of this mode is that class B and class A are two classes that have no relationship with each other. Class B has the same methods and properties as class A; and calling methods and properties in class B is calling methods and properties with the same name in class A. B seems to be an intermedia ...

It was written in the previous article Instantiation process of vue constructor , just a rough description of the vue instance. There is no detailed description of the process of converting the vue component and virtual DOM into real Dom and page mounting. This paper mainly describes the initialization process of vue components and the conversi ...

Problem description In Baidu search keywords, found Stack Overflow related problems spring-configuration-metadata.json file is not generated in IntelliJ Idea for Kotlin @ConfigurationProperties class Original link: https://stackoverflow.com/questions/37858833/spring-configuration-metadata-json-file-is-not-generated-in-intellij-idea-for-ko T ...

I've described the emoticon store on GitHub before, but I don't feel like there are enough emoticon stores to meet the needs of frequent fights, so I decided to mine the emoticon resources from the omnipresent Internet. The goal of this crawl is something with an average annual salary of millions. There are questions and answers about emoticon ...

A Certification Component 1. Local Authentication Components We know that we go to the dispatch method to distribute regardless of the route or the corresponding view class. In the source code of the dispatch method in the APIView class we see, there is a self.initial(request, *args, **kwargs), so the three default components of authentication, ...

Classification of Django MIDDLEWARE middleware: During request: process_request(request) process_view(request, view_func, view_args, view_kwargs) Return period: process_exception(request, exception) (only if the view raised an exception) process_template_response(request, response) (only for template responses) process_response(request, respons ...