Programmer Think

Install wkhtmltopdf wkhtmltopdf is an application similar to plug-in, which is supported by windows and linux, but the corresponding program should be installed. windows Download Download wkhtmltopdf directly from the official website. Official link: https://wkhtmltopdf.org/downloads.html Windows installation 1. Download the correspon ...

Analysis of NioEventLoopGroup's parent class and interface function of its implementation NioEventLoopGroup maintains a group of nioeventloops internally. The relationship between them is somewhat similar to the relationship between thread pool and thread. Its class diagram is as follows: Iterable and ScheduledExecutorService are provided by ...

(1) Internet mapping tool natapp is a reverse proxy software based on ngrok, which establishes a safe channel between the public network and the local Web server. The tool provides free network channels for Internet mapping. However, free domain names are randomly generated and will change every time they are started. If you need to pay fo ...

Spring source code 6 - onRefresh() methodHello, I'm classmate Tian, a programmer.Today, I will take you to interpret onRefresh() method of Spirng source code 6. This is one of the methods of refresh(). It seems to be an empty method, but in fact it is very, very important to improve the scalability of Spring.As the old rule, first paste the sou ...

1. Causes The reason why I pay attention to this is a question, which is described as follows: Given n points on a 2D plane, find the maximum number of points that lie on the same straight line. The main idea is to give me the X and Y coordinates of some points, find the line with the most points, and output the number of points on this ...

1. Introduction Here are the official documents The BeanShell interpreter has a very useful feature - it can act as a server, which is accessible by telnet or http. 2. Use Using BeahShell Server, you can dynamically change the running parameters, such as the number of threads and interval time, during the running of the test plan Scen ...

Statement: 1 ***               2. Because it is a personal summary, write the article with the most concise words               3. If there is any mistake or improper place, please point out I Front Foun ...

Kerberos authentication and Kafka integration under centos7 Version environment: (1)centos7.6 (2)kafka_2.12-0.10.2.2 (3)kerberos (4)flink-1.11.3-bin-scala_2.11 (5)jdk1.8 Note: where "b.kuxiao" is my hostname 1, kafka installation 1.1. Go to the official website to download kafka kafk ...

Get binary stream file api writing The back end here is a project written using the Spring Boot framework I use the encapsulation here and then call the way: First, write a tool class: The name is downloadrequest js The code notes are as follows: import axios from "axios"; /** * api encapsulation for file download */ // Create an axios ob ...

[Han Shunping talks about Java] one day learn Thread Synchronized mutex lock, process parallel concurrent deadlock, etc note thread Thread introduction process Process refers to the running program, and the operating system allocates memory space for the processA process is an execution process of a program, or a running program. It is ...