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Today, I want to use itext's jar package. I went to the official website and found that I can only download it with maven, but I changed my phone number before. I can't help it. Please try to set up Maven again. Record here and share it or find it in the future The first choice is to make sure that the jdk is installed on your environment. If n ...

Zookeeper https://zookeeper.apache.org/doc/current/zookeeperOver.html ZooKeeper is a distributed, open-source coordination service for distributed applications. It exposes a simple set of primitives that distributed applications can build upon to implement higher level services for synchronization, configuration maintenance, and groups and nami ...

Spring MVC + POI export web data to Excel Apache POI is an open source library of the Apache Software Foundation. POI provides the functions of reading and writing Microsoft Office files to Java programs. Next, I will release an example of Excel export based on spring MVC + Maven + poi. Welcome to criticize and correc ...

Configuring Maven in Eclipse Specify the path to configure and install maven Mavan local warehouse with Eclipse: Instead of the warehouse and setting we configured, you can also use the default one relation setting.xml file to configure setting.xml , plus Alibaba proxy imageIt will be slow to download jar directly from the address of the centr ...

Source code for this article: GitHub. Click here || GitEE. Click here 1. Introduction to the Framework 1. Basic Introduction Zookeeper is an observer-based component designed for scenarios such as unified naming services, unified configuration management, unified cluster management, dynamic offline of server nodes, and soft load balancing in a ...

From: https://www.cnblogs.com/du-hong/p/11764517.html brief introduction After the last cosmetic and plastic surgery, some customers asked if they could upgrade the package of that ordinary member and make it more beautiful. So this time let's see where we can make it a little more beautiful. The previous article modified some basic ReportN ...

According to the real business requirements of a power grid company, this case realizes the difference aggregation calculation on the real-time flow through Blink SQL+UDAF. Through this case, the readers are familiar with UDAF writing and understand the method invocation relationship and order in UDAF. Thank you @ commander for your guidance in ...

Java SPI example The principle of SPI mechanism is briefly introduced in the previous section. In this section, an example is used to demonstrate the use of Java SPI. First, we define an interface called Robot. public interface Robot { void sayHello(); } Next, we define two implementation classes, Optimus Prime and Bumblebee. ...

1. First configure the jdk Choose Preferences---- Find the location of your own jdk 2. Configure Tomcat window-----preferences------- Find your own tomcat location 3. Right click the project, build path -------- > configure build path   4. Import log4j-1.2.14.jar Right click log4j-1.2.14.jar file build path ----- > add to build p ...

In order to improve user experience when there are many pages, you need to add a skip page, that is, manually enter the number of pages to quickly jump to the specified page. Because it's difficult to write pages manually, and you want to use the pages provided by TP5, but the pages provided by TP5 are relatively simple, so you can customize th ...