Programmer Think

The Implementation Principle of Spring AOP and Its Example spring implements AOP by relying on JDK dynamic proxy and CGLIB proxy. Following is a brief introduction to JDK dynamic proxy and CGLIB proxy JDK dynamic proxy: Its proxy object must be the implementation of an interface. It is the proxy of the ...

1.1 The pit of split A couple of days ago in the company to pass FTP The data files uploaded by this method are parsed in a prescribed format and then put into storage. The general idea of code implementation is as follows: first, read the files by stream, parse and encapsulate each line of data into an object, and then carry out the operation ...

Preface Recently, when looking at the netty source code, I found a class called FastThreadLocal. JDK itself has a ThreadLocal class, so I can roughly think of this class is faster than jdk's own, where is the main speed, and why it is faster. Here is a brief analysis. performance testing ThreadLocal is mainly used in multi-threaded environm ...

[TOC] I. Overview of HDFS System Composition This is a distributed file system that is suitable for scenarios where multiple reads are written at one time. Contains the following roles: NameNode(nn): Store metadata of files, such as file name, file directory structure, file attributes and so on, as well as block list of each file and DataNode ...

1. Map interface 1.1 Overview of Map Interface   By looking at the description of the Map interface, we find that the collection under the Map interface is different from the collection under the Collection interface. They store data in different forms, as shown in the following figure.   In collections, elements exist in isolation (u ...

1. Prepare to create an agent protected Object wrapIfNecessary(Object bean, String beanName, Object cacheKey) { //1. Finding Enhancers Object[] specificInterceptors = getAdvicesAndAdvisorsForBean(bean.getClass(), beanName, null); if (specificInterceptors != DO_NOT_PROXY) { //2. Creating Agents Object proxy = createProxy(bea ...

Official website video Official address: https://projectlombok.org The home video of the official website demonstrates how to use Lombok in eclipse. Project Lombok is a java library that automatically plugs into your editor and build tools, spicing up your java. Never write another getter or equals method again, with one annotation your class ...

Configuration ClassPostProcessor inherits the BeanDefinitionRegistryPostProcessor interface, which implements the postProcessBeanDefinitionRegistry and its parent BeanFactoryPostProcessor#postProcessBeanFactory method. For an analysis of the postProcessBean Definition Registry method, see: Spring 5 Source Learning (5) Configuration Class Post P ...

Incorrect thread abort - Stop Stop: Discontinues threads and clears information about monitor locks, but may causeJDK is not recommended for thread security issues.Destroy: JDK does not implement this method. /** * @author simon */ public class StopThread extends Thread { private int i = 0, j = 0; @Override public void run() { ...

I. jdk installation Install jdk1.7.0_80 Unzip to / usr/local/jdk1.7.0_80 Modify environment variable vi/etc/profile II. Creating Users Create a group: group add Weblogic Create users: useradd-g Weblogic Weblogic Modify password: passwd weblogic Enter password*** III. Installation of Weblogic 12C ...