Java
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【SpringCloud】07. Communication between applications
Inter application communication HTTP vs RPC 1. Two restful invocation methods between services in spring cloud Method …… -
【SpringCloud】06. Eureka summary
1. Two notes: 1. @ enableeurekaserver - add on startup class It provides the function of service registration. After e…… -
Java knowledge necessary for testing (3) — collection and map related
Set correlation Differences among list, set and map Differences among vector, ArrayList and LinkedList Vector: dynamic…… -
Easy to remember questions in java test (I)
The author is good at c# language and will take the exam in April. Learning Java is just for the exam. How to learn th…… -
Java knowledge necessary for testing (I) — Java Foundation
Java Foundation How does Java work? The developed java source code is compiled into a platform independent bytecode fi…… -
Summary of basic problems of Java generics
Generics is a new feature of Java se 1.5. The essence of generics is parameterized types, that is, the data type opera…… -
【SpringCloud】05. High availability of Eureka
1. Simple situation 2. In order to achieve high availability of Eureka, multiple Eureka can register with each other. …… -
Source code analysis of PriorityQueue
an introduction to The PriorityQueue class is in Java 1 5 and as part of the Java Collections Framework. PriorityQueue…… -
Java virtual machine architecture
I. data type Similar to data types in the Java programming language, The data types that Java virtual machine can oper…… -
Java GUI quick start
There are two toolkits for writing GUI in Java, AWT and swing. Swing is an extension of AWT. Swing has more components…… -
Design pattern – singleton pattern
Design pattern It is a summary of the experience of classification, cataloging and code design that is repeatedly used…… -
Java notes: IO streams
1. IO flow understanding I in the IO stream is the abbreviation of the word input, It means input or read. O is the ab…… -
Java notes: reflection, annotation
1、 Reflection 1. Reflection mechanism The related classes of reflection mechanism except a Java Lang. class, the rest…… -
Java notes: Java object oriented
1、 Method 1. Overview Methods can also be called functions. In other languages, the concepts and syntax of methods an…… -
Java notes: common classes
For the use of built-in classes and methods in Java, we can usually read the corresponding API documents, but we still…… -
Java notes: Collections
A collection is a kind of container object, which is used to store objects, or stored references to objects. It is not…… -
Java notes: arrays, exceptions, generics
1、 Array Array is also a reference type. Its parent class is object. It is declared with "data type []". For example,…… -
Nacos of springcloud Alibaba
1、 Run Nacos Nacos GitHub open source address: https://github.com/alibaba/nacos Nacos official documents: https://nac…… -
Get HttpServletRequest and httpservletresponse from spring MVC
The singleton pattern most commonly used by beans in spring What about HttpServletRequest and httpservletresponse in s…… -
Shiro combat series (11): caching
The Shiro development team understands that performance is critical in many applications. Caching is the first state-o…… -
Application example of crawling blog data using java jsup
Import Maven dependencies Select the website you want to crawl (here I take crawling my own blog posts as an example) …… -
Spring (XV) declarative transaction
Declarative transaction management allows you to manage transactions with the help of configuration rather than source…… -
Summary and architecture of spring (I)
Personal description: This link is referenced in the following section: https://www.tutorialspoint.com/spring/spring_a…… -
Kisso of open source project
Kisso open source project: https://gitee.com/baomidou/kisso 1、 Introduction Kisso = cookie SSO cookie based SSO middl…… -
Handler message under Android
The implementation principle of handler message in Android is studied: When new handler(), get the data under the curr…… -
Shiro actual combat series (II): introduction to actual combat (Continued)
Next, we will explain a series based on actual combat, so the relevant java files can obtain POM XML and its log4j fil…… -
Encryption algorithm for login and registration
Generally, whether it is CMS, CRM, ERP or B2B, all login and registration are encrypted. The password is encrypted for…… -
The difference between hibernate opensession and getcurrentsession
The difference between opensession and getcurrentsession: (1) each time opensession obtains a new session object, whil…… -
FreeMarker generates java code from templates
FreeMarker generates java code based on templates. In this sentence alone, you must also know its application, such as…… -
Talk about javac
The Java language has the Java language specification, which describes in detail the morphology and syntax of the Java…… -
Java creates files and writes data
Application scenario: take OJ project as an example to create corresponding In or Out file and write the relevant data…… -
Could not get a resource from the pool
Key error information: could not get a resource from the pool The common reason is that redis on the remote server is ……