Programmer Think

I. Preface       In my work, I often encounter the processing and operation of word, the most commonly used is the export of word documents, and I often encounter a variety of complex formats of word. At the beginning, I used poi, but I struggled for a period of time, modfa, instead of using docx4j, which is very powerful. Well ...

Interaction between front end and back end and database operation 1. Query operation In mapper, select tag is used to complete the query operation. The sql statement used is select *from data table name. Or change * to the specific field value to be accepted, such as id, username and password. Then ...

1, The UI access interface of k8s - dashboard In dashboard, although we can create, delete and modify resources, we usually regard it as the software of healthy k8s cluster. As the Web user interface of Kubernetes, users can deploy containerized applications in Kubernetes cluster through Dashboard, handle and manage the application problems, a ...

This paper is based on the official video playback plugin for encapsulation https://github.com/flutter/plugins/tree/master/packages/video_player/video_player In the daily development, it is inevitable to meet the needs of video development; with the increasingly active technology of Flutter, there wil ...

zuul routing gateway Zuul includes two main functions of request routing and filtering: The routing function is responsible for forwarding the external request to the specific microservice instance, which is the basis of realizing the unified access to the external access, while the filter function is ...

Welcome to spring cloud. In this chapter, we will teach you how to create the parent-child project architecture of spring cloud. Knowledge is endless, and stories are good or bad. Articles are purely fictions. Make complaints about them. How can I walk in the Jianghu without any tricks. The technologies ...

Zipkin service tracking principle Create some tracking identifiers (tracking ID, spanId, parentId), and finally build a request process tree. When each business system calls each other, it will pass specific tracking messages to Zipkin. After Zipkin collects tracking information, it will aggregate, process, store, display, etc. users can easily ...

[TOC] Quick Start for the http Pressure Tool wrk Thank you, teacher cap1537 I've used a lot of manometry tools, but I haven't found the one I like.It feels good to try wrk recently. Write down this guide for yourself to remember, and if it helps you, it's also good. install Wrk supports most UNIX-like systems and does not support windows.Oper ...

introduce jdk explained: public class FileInputStream extends InputStream A FileInputStream gets input bytes from files in the file system.What files are available depends on the host environment. FileInputStream is used to read raw byte streams such as image data.To read a string, consider using File ...

The goal of this framework is to be a generic framework, and I want it to be big and complete, so I can use it directly as a foundation template for other projects in the future, so I want to continue adding some functionality to it, just write some demo in.For this article, I'll add a queue feature. nsq There are many queues, I choose nsq.The ...