After the underlying device C language RC4 is encrypted, why can't Java use rc4 to decrypt, but other people's PHP programs can decrypt successfully?

The underlying device is a wifi probe that regularly pushes data to a service. This service address receives the data and uses rc4 to decrypt it. The underlying device rc4 encryption is written in C language. java receiving program {code...} java rc4 decryption program: public class RC4 { {code...} ...

PHP中文网 2017-06-17 09:15:15 0  1  1261

How to write tests and documentation for java code based on spring family bucket?

Recently, I was in charge of a small book review project in the school library. The project was based on Java. Because the subject studied C++ before, he had no Java experience before starting. He had only been exposed to it for about a month. I have to say that it is really good that the open sourc...

过去多啦不再A梦 2017-06-12 09:22:02 0  2  689

java - Why are the generated names of a File named after the current timestamp different?

When I was recording, I named it based on the current timestamp, but why is the name of the file generated when I save it different after recording? The normal one should be xxxx.mp3. Why do the following long list of problems appear? ? ? ?

PHP中文网 2017-05-16 13:34:36 0  1  773

javascript - Why do companies rarely use node as the backend? Compared with the traditional backend of java, php, and python, what are the advantages of node and what is it suitable for?

Why do companies rarely use node as the backend? Compared with the traditional backend of java, php, and python, what are the advantages of node and what is it suitable for?

三叔 2017-06-28 09:23:09 0  1  1162

Why did I make an error when introducing the basic class in the index controller when I wrote the same basic class as my teacher?

Why did I write the same basic class as my teacher and got an error when introducing the basic class in the index controller? Class 'think\controller' not found

我的世界充满阳光 2018-01-02 19:27:56 0  2  1433

java - Why does it report 404 when directly accessing static resources under webroot?

(www.sf.gg) is China's leading developer technology community. We hope to provide a pure, high-quality technical exchange platform for programming enthusiasts, learn, communicate and grow with developers, and create an era for developers!

仅有的幸福 2017-05-17 10:09:07 0  5  514

java - What is enum? Why is it there? How to use it?

In actual phenomena, I can basically use enum, but I want to trace the source (discuss the essence). In the expected phenomenon, I refuse dogmatic excerpt-document-style answers (time is important). I want a deep understanding of enum (at least I have written a lot of code in an actual production en...

我想大声告诉你 2017-05-17 10:01:51 0  7  691

What are the differences in how Java basic types are stored as local variables and member variables?

1. This question may involve many aspects. I did some research myself and understood part of it, but some parts are still unclear. Paste the code first (Java version 1.8): {code...} 2. First tell me what you know clearly: the 4th output and the 8th output are relatively clear. This is due to the fac...

世界只因有你 2017-05-27 17:41:41 0  1  579

Why does the website I made using Java show as unsafe when I open it with Chrome? But when I enter the secondary interface, there is no word "unsafe"?

(www.sf.gg) is China's leading developer technology community. We hope to provide a pure, high-quality technical exchange platform for programming enthusiasts, learn, communicate and grow with developers, and create an era for developers!

高洛峰 2017-05-27 17:40:31 0  6  739

I have almost no basic knowledge of building a website in PHP. Can I recommend a suitable tutorial?

I have almost no basic knowledge of building a website in PHP. Can I recommend a suitable tutorial?

幽灵 2017-11-08 10:28:41 0  1  1612

Do you recommend learning native PHP or directly learning ThinkPHP if you have no basic knowledge of PHP?

Do you recommend learning native PHP or directly learning ThinkPHP if you have no basic knowledge of PHP? Please recommend relevant tutorials!

Alvin 2021-04-17 10:35:01 0  1  1588

java - When the form action in jsp or aspx submits the form, why is it submitted to itself or to another jsp or aspx instead of to the server?

Submitting a form means submitting the data entered by the user on the page. Logically speaking, these data should be submitted to the server. Why is it submitted to its own page? Could it be that this jsp file or aspx file has been bound to the background java file or c# file in a certain configura...

怪我咯 2017-05-18 10:44:57 0  1  652

java - Tomcat can be hot deployed, why does it still prompt hot code replace failed?

(www.sf.gg) is China's leading developer technology community. We hope to provide a pure, high-quality technical exchange platform for programming enthusiasts, learn, communicate and grow with developers, and create an era for developers!

给我你的怀抱 2017-05-17 10:08:31 0  3  701

java - Anonymous inner classes and inherited classes, why is there a difference when implementing ClassLoader

I was looking at the Java virtual machine recently, and the class loader section gave this example: {Code...} In short, it uses a custom class loader to load a class, and the returned class is the same as the class loaded by the SystemClassLoader that comes with the jvm. different. So if you use a c...

PHP中文网 2017-05-17 10:07:45 0  1  778

java - Is it better to join a traditional company or continue to look for a company that uses mainstream Internet technologies? , this traditional company is offering 6.5k, should we continue looking or accept the offer?

I graduated in June this year and found a company that makes the Guangdong Provincial Civil Service Examination and Recruitment Management System. It is a traditional development company. The technology used is ssh. I have been an intern for almost a year. I resigned last week. I will continue to lo...

漂亮男人 2017-05-27 17:40:59 0  3  736

How to make multiple fields unique

Hello teacher, how to make the validator unique for multiple fields? I looked at the underlying code, but I’m not very technical, so I didn’t understand it.

3好男人 2018-10-07 10:31:21 0  0  1021

c - What technologies are needed to understand PHP source code?

I am a C language self-learner and WEB developer with a non-computer science background. I have been doing PHP development for a while. I recently wanted to learn PHP extension development and found that the relevant tutorial articles covered various PHP source code levels. For example, zval data st...

为情所困 2017-05-16 13:13:56 0  2  763

node.js - Are there any tutorials suitable for advanced JavaScript in Nodejs?

I have no JavaScript foundation, but because I want to use Nodejs, I took a look at JavaScript. However, I found that many tutorials require learning Html and css at the same time when learning JavaScript. I wonder if it is necessary to learn these? If it is not necessary, what are some suitable one...

高洛峰 2017-05-19 10:09:11 0  2  459

javascript - Why can't onclick directly call a parameter-containing function but needs to be written in the form onclick=function(){fn(p)}?

I'm new to js. Please ask me for advice. Why can't onclick directly call the parameter-containing function but needs to be written in the form of onclick=function(){fn(p)}? The non-parametric function can be written directly as onclick=fn();? What is the underlying principle? Thanks

高洛峰 2017-05-19 10:31:56 0  2  879

javascript - Small issues between Object and vue

Question: I extended the prototype of Object and found that it could not be extended. Is it because Vue has already performed underlying processing on the prototype of Object?

大家讲道理 2017-06-12 09:29:04 0  3  795