For more information on how to avoid some common problems

Background: Coding issues have been plagued by program developers, especially in Java, because Java is a cross-platform language that switches between encodings on different platforms. Next, we will introduce the root causes of Java coding problems, the different encoding formats commonly encountered in Java, the scenarios where coding is often required in Java, the causes of Chinese problems, and several places where coding may exist in Java WEB development; How an HTTP request controls the encoding format　　How to avoid the problem of Chinese coding. 1. Several common encoding formats 1.1 why encoding the smallest unit of information stored in a computer is 1 bytes, or 8 bits, so the range of characters that can be represented is 0 ~ 255.　　The symbol to be represented is too many to be fully represented by 1 bytes. 1.2 How to translate the computer provides a variety of translation methods, common with ASCII, iso-8859-1, GB2312, GBK, UTF-8, UTF-16

1. Parsing the Chinese encoding problem in the Java Web

Summary: Coding issues have been plagued by program developers, especially in Java, because Java is a cross-platform language that switches between encodings on different platforms. Next, we will introduce the root causes of Java coding problems, the different encoding formats commonly encountered in Java, the scenarios where coding is often required in Java, the causes of Chinese problems, and several places where coding may exist in Java WEB development; How an HTTP request controls the encoding format How to avoid the problem of Chinese coding.

2. JavaScript memory leaks in 4 ways and how to avoid detailed introduction

Summary: This article explores common client-side JavaScript memory leaks and how to use Chrome development tools to discover problems. Introducing memory leaks is the ultimate problem for every developer, and it is the root of many problems: slow response, crashes, high latency, and other application issues. What is a memory leak? In essence, memory leaks can be defined as: When an application no longer needs to consume memory, for some reason, memory is not reclaimed by the operating system or the pool of available memory. Programming languages manage memory in different ways. Only the developer knows which memory is not needed and the operating system can recycle it. Some programming languages mention:

3.4 types of JavaScript memory leaks and how to avoid

Introduction: Original: 4TypesofMemoryLeaksinJavaScriptandHowtoGetRidOfThem translation from: Alon ' Sblog This article explores common client-side JavaScript memory leaks and how to use Chrome to open ...

4. Why the Linux zombie process is generated and how to avoid the zombie process

Summary: The purpose of setting a zombie state for a process is to maintain information about the child process so that the parent process gets it at a later time. This information includes the process ID, termination status, and resource utilization information (CPU time, memory usage, and so on) of the child process. If a process terminates, and the process has a child process that is in zombie state, then the parent process ID of all its zombie child processes is reset to 1 (init process). The init process that inherits these child processes cleans them up (the INIT process will wait for them, thus removing the zombie state).

5. Generation of PHP random username account

Introduction: Random generation difficulty is how to avoid collisions, some people say with md5,guid these mechanisms ah, of course, but as accounts, look at the chaos, and the generation of bits too long. This method only need to solve the concurrent collisions within 1 seconds, because the fixed head is Unixtime time, accurate to the second, more than 1 seconds, the head of the time must have changed. At the same time this method can also be generated by the user random order number. The test condition is to create 10,000 random accounts (in milliseconds), 0 collisions, and 100,000 about 0-3 collisions with a loop. There should be no internet company in ...

6. How to avoid 1 times the scan code multiple entry information, or multiple clicks to determine multiple redemption?

Introduction: Hello everyone, I am doing the development. As the question: in the sweep code when live Click button Redemption, how to avoid multiple prizes. 2 Types of offline activities: 1 sweep QR code 2 Click the Claim button. There was no problem at the time of the test (small company, just a few people testing). This is the user network problem guide ...

7. How to avoid JavaScript memory leaks and memory management skills

Summary: Efficient JavaScript Web applications must be smooth and fast. Any application that interacts with the user needs to consider how to ensure that memory is used effectively, because if it consumes too much, the page crashes and forces the user to reload. And you can only hide in the corner to cry.

8. The generator function and the yield keyword in javascript

Summary: In JavaScript, the most talked about is the operation of asynchronous programming, how to avoid multiple nesting of callbacks. Once the callbacks for an asynchronous operation are nested many, not only will the code become bloated, but it is also prone to error. A variety of asynchronous programming solutions are also being put forward, such as the familiar Promise,co and so on. Today's generator and yield are related to asynchronous programming, which can help us synchronize asynchronous programming.

9. Generation of PHP random username account

Introduction: Random generation difficulty is how to avoid collisions, some people say with md5,guid these mechanisms ah, of course, but as accounts, look at the chaos, and the generation of bits too long. This method only need to solve the concurrent collisions within 1 seconds, because the fixed head is Unixtime time, accurate to the second, more than 1 seconds, the head of the time must have changed. At the same time this method can also be generated by the user random order number. The test condition is to create 10,000 random accounts (in milliseconds), 0 collisions, and 100,000 about 0-3 collisions with a loop. There should be no internet company in ...

JavaScript-Mobile Form submission page, the form form will be submitted two times if the network is slow

Introduction: Mobile Site Submission page, the network is good when normal, the network is slow when the mobile phone page will always be in the loading state, but fiddler Crawl has two times the same content of the submission, how to avoid this happens?

"Related question and answer recommendation":

C++,ostringstream How to control the contents of a read vector container to prevent reading to junk data?

Javascript-js How to avoid shallow copy

IOS 7 UIView Drawing interface controls with code, how to avoid "magic number"

How do I avoid frequent likes in java-web applications, such as clicking and canceling and clicking on this loop?

How do I cancel the 30-second time limit for MySQL thinkphp operation?