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用you-get下载的mp4视频和音频是分开的应该怎么办呢?

安装FFmpeg you-get如果下载的文件过大(一般出现在1080p及以上的解析度),就会把音频和视频分成[00]和[01】两个文件,默认是会在下载完成后合成的。这个过程是基于FFmpeg的,如果你的系统是...

02/08 21:59
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'python pip' is not recognized as an internal or external command

A common error is: 'python' is not recognized as an internal or external command, operable program or batch file. or: 'pip' is not recognized as an internal or external command,...

02/08 11:44
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github下载提速教程

获取github的IP地址 访问:https://www.ipaddress.com/ 网址 依次获取以下三个网址的IP github.com github.global.ssl.fastly.net codeload.github.com 这是我获取的IP 192.30.253.113 githu...

02/08 10:28
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Declarative REST Client: Feign

Feign is a declarative web service client. It makes writing web service clients easier. To use Feign create an interface and annotate it. It has pluggable annotation support inc...

01/30 21:33
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Intro to Feign

1. Overview In this tutorial, we will introduce and explain Feign, a declarative HTTP client developed by Netflix. Feign aims at simplifying HTTP API clients. Simply put, the de...

Java List Initialization in One Line

1. Introduction In this quick tutorial, we'll investigate how can we initialize a List using one-liners. 2. Create From an Array We can create a List from an array and thanks to...

01/30 18:38
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Spring - @Autowired for List Types

How to use Spring to autowire list types? How to autowired all subclasses of a parent class, or all implementations of an interface. Let’s see an example - we have three pets t...

01/30 18:31
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Spring Custom Qualifier Annotation

This page will walk through spring custom qualifier annotation example. A custom qualifier annotation must be created using @Qualifier annotation. The custom qualifier annotatio...

01/30 17:57
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Java Custom Annotations Example

In this tutorial, we will show you how to create two custom annotations – @Test and @TestInfo, to simulate a simple unit test framework. P.S This unit test example is inspired ...

01/30 16:42
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Implementing a Custom Spring AOP Annotation

1. Introduction In this article, we'll implement a custom AOP annotation using the AOP support in Spring. First, we'll give a high-level overview of AOP, explaining what it is a...

01/30 16:27
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Understanding Eureka Peer to Peer Communication

Make sure you have visited this page to understand about Eureka cluster configurations. Eureka clients tries to talk to Eureka Server in the same zone. If there are problems tal...

01/30 15:06
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Comparing getPath(), getAbsolutePath(), and getCanonicalPath() in Java

1. Overview The java.io.File class has three methods — getPath(), getAbsolutePath() and getCanonicalPath() — to obtain the filesystem path. In this article, we'll have a quick...

01/29 23:05
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Check If a String Is Numeric in Java

1. Introduction Oftentimes while operating upon Strings, we need to figure out whether a String is a valid number or not. In this tutorial, we’ll explore multiple ways to detec...

Number of Digits in an Integer in Java

1. Introduction In this quick tutorial, we'll explore different ways of getting the number of digits in an Integer in Java. We'll also analyze those different methods and will f...

How to Round a Number to N Decimal Places in Java

1. Overview In this short article, we're going to look at how to round a number to n decimal places in Java. 2. Decimal Numbers in Java Java provides two primitive types that ca...

Java Timer

1. Timer – The Basics Timer and TimerTask are java util classes used to schedule tasks in a background thread. In a few words – TimerTask is the task to perform and Timer is ...

Java – Random Long, Float, Integer and Double

1. Generate an Unbounded Long Let's start with generating a Long: 1 2 3 4 @Test public void givenUsingPlainJava_whenGeneratingRandomLongUnbounded_thenCorrect() { long generatedL...

01/29 21:57
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Java 8 – Powerful Comparison with Lambdas

1. Overview In this tutorial, we're going to take a first look at the Lambda support in Java 8 – specifically at how to leverage it to write the Comparator and sort a Collecti...

01/29 21:50
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Binary Numbers in Java

1. Introduction The binary number system uses 0s and 1s to represent numbers. Computers use binary numbers to store and perform operations on any data. In this tutorial, we'll l...

01/29 21:38
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Concrete Class in Java

1. Introduction In this quick guide, we'll discuss the term “concrete class” in Java. First, we'll define the term. Then, we'll see how it's different from interfaces and abst...

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