Filter (function + usage)

Filter Features: Used to intercept incoming requests and outgoing responses. Modify or process in some way the data stream being exchanged between the client and the server. how to use? Similar to using Servlet, Filter is an interface provided by Java WEB, and developers only need to customize a class and implement the interface. package com. ...

Posted by ed01 on Sun, 22 May 2022 01:20:51 +0300

Java_ Oriented programming

Tip: after the article is written, the directory can be generated automatically. Please refer to the help document on the right for how to generate it IP IP address: each computer is assigned an identification numberPort: the identity of the application package Network programming; import java.net.InetAddress; import java.net.Unknow ...

Posted by ocpaul20 on Sat, 21 May 2022 23:45:58 +0300

533. ActiveMQ detailed introductory tutorial series - [ActiveMQ] 2022.05.21

1. Message format of JMS JMS message consists of the following three parts: Message header: Each header field has corresponding getter and setter methods. Message properties: If you need a value other than the header field, you can use the message properties. Message body: The message types defined by JMS include TextMes ...

Posted by faizanno1 on Sat, 21 May 2022 23:41:37 +0300

Will the following code be executed after throw is executed?

1. After we try to catch the throw object public void re(int i) { if (i > 5){ this.i = i; }else { try { throw new Exception("Illegal data!"); } catch (Exception e) { e.printStackTrace(); } System.out.println("123"); } The re ...

Posted by imarockstar on Sat, 21 May 2022 23:16:39 +0300

MyBatis: Cache for MyBatis

1. MyBatis first level cache The first-level cache is at the SqlSession level. The data queried through the same SqlSession will be cached. The next time the same data is queried, it will be obtained directly from the cache and will not be re-accessed from the database.Four situations that invalidate the L1 cache: Different SqlSession s ...

Posted by vh3r on Sat, 21 May 2022 22:14:55 +0300

Want to know how Java Web communication develops. Is TCP and IP protocol just TCP and IP protocol?

Author: Le byte - Keng Wang Lao Xue For our developers who study technology, there are many technologies. At present, they may feel very complex and powerful, but in fact, all these technologies have been achieved through the gradual efforts of predecessors from the most basic functions over time. We are standing on the shoulders of many gian ...

Posted by subcool on Sat, 21 May 2022 20:48:37 +0300

MyBatis Junior Actual 2: Additions, Deletions, and Reviews

Welcome to my GitHub https://github.com/zq2599/blog_demos Content: A summary of all original articles, including Java, Docker, Kubernetes, DevOPS, etc. This is the second article in the MyBatis Beginner Actual Warfare series. We know how to integrate MyBatis in SpringBoot from the previous article. We will practice basic skills together: adding ...

Posted by Ekate on Sat, 21 May 2022 20:05:01 +0300

Aircraft war - java basic applet (Beginner project) 05

Shoot ing game day 5: 1. Add an access control modifier to the members in the class 2. Design Images Image Tools Knowledge points: 1.package: 1) Function: avoid class name conflict 2) Full name of class: package name The class name cannot conflict with the class name in the package 3) Package names often have a hierarchy. 4) suggestion: ...

Posted by 182x on Sat, 21 May 2022 17:45:51 +0300

Swagger2 annotation (for personal use)

Import dependency Due to the use of another UI interface, all imported dependencies are one more. <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.10.5</version> </dependency> <depende ...

Posted by cs1h on Sat, 21 May 2022 13:18:51 +0300

For 4 days, this moment poked the interviewer's careful AQS dinner and arranged it for you!

You are the most shining light in the crowd preface AQS, the full English name of AbstractQueuedSynchronizer, is directly translated into abstract queue synchronizer. It's jdk1 5. A tool class for solving concurrency problems is created by the famous Doug Lea. Different from the synchronized keyword, AQS solves concurrency problems through code ...

Posted by richardk1 on Sat, 21 May 2022 12:59:19 +0300