POI processes Excel files for export

SXSSFWorkbook is used to generate a large number of Excel data files, the main principle is to generate excel with temporary storage space.POI requires more than 3.8, and the file format requirement generated is 07 and above, because the number of rows of Excel 07 and above is 1048576, which is very large, compared with over 60 ...

Posted on Thu, 06 Feb 2020 08:21:11 -0800 by Comtemplative

Small problems in project operation

I am used to the ready-made things. In this project of building environment operation, all kinds of problems that I have never seen come one after another. I can't help it. I can only record it, review it, and try to break through the realm of the great God as soon as possible... 1. For a small whit ...

Posted on Mon, 03 Feb 2020 22:43:59 -0800 by nileshkulkarni

Vue Cli3+SpringBoot

Follow today The blogger Learn the back-end registration encryption and login decryption functions. 1. To be honest, I didn't understand the application of Shiro framework in springboot. So I put the code to record what I did: First, the realm class of the realm package: package realm; import com.exa ...

Posted on Mon, 03 Feb 2020 08:07:24 -0800 by Kunax

Order small program, order system, management background batch import excel dishes data

During the period when the ordering system went online, many students gave feedback on whether a batch import function of dishes could be added. Because I am busy at ordinary times, I have no time to add the function of batch import of dishes. Today is just free time, let's teach you to realize the function of batch import of dishes. Later, t ...

Posted on Mon, 03 Feb 2020 03:17:20 -0800 by Spoiler

Chapter 9 Summary 3 Parsing XML Format Data

First, install an Apache server After installation, create a new file named get_data.xml in the Apache\htdocs directory: <apps> <app> <id>1</id> <name>Google Maps</name> <version>1.0</version> </app> <app> <id>2</id> &l ...

Posted on Sun, 02 Feb 2020 19:27:53 -0800 by GreenMarch

How to splice strings gracefully in Java

In Java, how do we do string splicing? String splicing is something we often do in Java code, which is to splice multiple strings together. As we all know, string is an immutable class in Java, so once it is instantiated, it cannot be modified. So how can we gracefully splice our strings? I found a lot of technical data here. Basically, the str ...

Posted on Sun, 02 Feb 2020 04:11:34 -0800 by sleepingdanny

Zabbix Monitors Mysql, Apache, Nginx Applications

Zabbix's monitoring of third-party application software has two main difficulties: one is to write a custom monitoring script; the other is to write a template and import it into the zabbix web, which is customized to the monitoring requirements, while writing a template file is relatively difficult, but there are already many templates writte ...

Posted on Sat, 01 Feb 2020 13:12:31 -0800 by Keith Scott

How to use Java to download and save files from the Internet?

I need to get an online file (for example, http://www.example.com/information.asp) and save it in the directory. I know there are several ways to capture and read online files (URL s) line by line, but is there a way to download and save files using Java? #1 building import java.io.*; import java.net.*; public class filedown { public ...

Posted on Sat, 01 Feb 2020 06:32:32 -0800 by stonefish

Spring Cloud explains Feign's core principles and performance optimization

1. introduction Feign is a lightweight framework for HTTP request calling, which can call HTTP request by java interface annotation instead of directly calling by encapsulating HTTP request message in Java. Feign templates the request by processing comments. When it is actually called, it passes in ...

Posted on Fri, 31 Jan 2020 23:51:30 -0800 by watson516

cordova Learning 3: simulator running + photographing + positioning

Simulator running: Open android studio Click Tools - > Android - > AVD manage - > Click triangle to start If you have not created a new Virtual Device, please create it first and configure the various configurations you need Please refer to: https://developer.android.google.cn/studio/run/emulator      After the simula ...

Posted on Fri, 31 Jan 2020 09:12:30 -0800 by Lukey