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原创 You can access a MySQL database running in a Docker container and query a table

【代码】You can access a MySQL database running in a Docker container and query a table。

2025-03-25 21:43:21 251

原创 【excel】easy excel如何导出动态列

(实际使用中,将DynamicFieldExcelDTO作为一个基类,而涉及了动态导出的DTO类继承该类 ,例如 AnimalExcelDTO extends DynamicFieldExcelDTO, 这么做的目的 主要是需要设定一个dynamicFields字段,用于处理器里面映射并替换值)List<String> header = Arrays.asList("动态头部1","动态头部2","动态头部3");场景一:例如表头第一列固定为动物,且必定有第二列,第二列的表头可能为猫 也可能为狗;

2025-02-25 22:16:57 436

原创 CellWriteHandler is an interface in EasyExcel, a popular Java library for reading and writing Excel

【代码】CellWriteHandler is an interface in EasyExcel, a popular Java library for reading and writing Excel。

2025-02-25 11:09:40 414

原创 your HTTP request connection start duration too long

【代码】your HTTP request connection start duration too long。

2025-02-24 10:12:00 716

原创 To push to a Git repository using a specific username and password for one time

【代码】To push to a Git repository using a specific username and password for one time。

2025-02-17 15:43:04 371

原创 mvn install usage

【代码】mvn install usage。

2025-02-14 15:16:14 270

原创 check your commit count in your branch using Git commands

【代码】check your commit count in your branch using Git commands。

2025-02-10 16:37:05 243

原创 To convert a JSONArray to a List<Map<String, String>> in Java

【代码】To convert a JSONArray to a List<Map<String, String>> in Java。

2025-02-08 11:33:44 644

原创 how you can integrate a WeCom self-built app (自建应用机器人) with an external group chat using Java.

【代码】 how you can integrate a WeCom self-built app (自建应用机器人) with an external group chat using Java.

2025-02-07 19:30:02 505

原创 a few ways to keep your Python application running after closing the terminal

【代码】a few ways to keep your Python application running after closing the terminal。

2025-02-06 13:50:20 650

原创 To check if your system is working in the Docker app

【代码】To check if your system is working in the Docker app。

2025-01-27 22:42:44 1404 1

原创 start using Python 3.11 after installation

【代码】start using Python 3.11 after installation。

2025-01-26 16:37:15 1375

原创 spring.cloud.nacos.config.shared-configs property

In Nacos, the property is used to load additional shared configurations that are not directly tied to the specific application but can be shared across multiple applications or environments. These shared configurations can be stored in Nacos and pulled in

2025-01-26 14:41:35 750

原创 To decide which GitLab URL to use for committing code, you need to determine where your project repo

【代码】To decide which GitLab URL to use for committing code, you need to determine where your project repo。

2025-01-23 11:28:45 438

原创 java.lang.IllegalArgumentException: retries must be greater than 0

retries。

2025-01-17 14:19:45 650

原创 Exporting large datasets (like 1 million rows) to Excel efficiently requires careful optimization

【代码】Exporting large datasets (like 1 million rows) to Excel efficiently requires careful optimization。

2025-01-17 11:19:45 772

原创 To check the Spring Cloud version being used during application startup

【代码】To check the Spring Cloud version being used during application startup。

2025-01-16 17:25:42 436

原创 Designing a composite index for a query with a mix of WHERE conditions and ORDER BY clauses

When designing a composite index for a query with a mix of conditions and clauses, you need to carefully arrange the columns in the index. The order of columns in the index should maximize its usefulness for filtering () and sorting () while adhering to

2025-01-15 15:22:34 760

原创 Configuring caching in MySQL

【代码】Configuring caching in MySQL。

2025-01-14 17:47:39 943

原创 Alibaba‘s ARTHAS

【代码】Alibaba‘s ARTHAS。

2025-01-13 14:12:17 716

原创 recursive type references in your code

【代码】recursive type references in your code。

2025-01-10 14:37:19 836

原创 搭建微信机器人的第4种方式,免费开源,轻量高效(如需要协助,软讲可私聊我)

"data": [{"content": "你好👋"}, {"type": "fileUrl", "content": "https://download.samplelib.com/jpeg/sample-clouds-400x300.jpg?RECVD_MSG_API=http://129.150.39.xxx:3000/receive/:接收消息的 API 地址,实现处理接收消息的逻辑,如果你不想实现这个功能,可以不填,默认为空。下图显示已经登录,如果没登录,这里会出现二维码。

2025-01-09 11:15:56 151

原创 check the network connection limit numbers in Linux

【代码】check the network connection limit numbers in Linux。

2025-01-09 11:12:28 947

原创 OGSM Analysis

To enhance market competitiveness and achieve business growth by increasing market share, improving user loyalty, driving product innovation, stabilizing existing products, and leveraging advanced technologies for operational efficiency.Market Share Growth

2025-01-07 17:23:56 343

原创 To start your application using a different Spring Boot version

【代码】To start your application using a different Spring Boot version。

2025-01-06 22:39:35 1009

原创 The container name “/m3e“ is already in use by container “abef7ddbae8c406f937cdabc1a187a9ac706977689

m3e。

2025-01-04 15:03:48 312

原创 Getting a promotion as a programmer

Getting a promotion as a programmer requires a combination of technical skill, communication, and strategic career planning. Here's a step-by-step guide to help you achieve your goal:

2025-01-02 23:05:17 676

原创 Embedding AI

【代码】Embedding AI。

2024-12-31 14:19:37 637

原创 mvn install

The。

2024-12-30 17:37:29 943

原创 Two XML snippets describe different ways to manage dependencies in a Maven project

【代码】Two XML snippets describe different ways to manage dependencies in a Maven project。

2024-12-27 11:18:02 548

原创 To avoid editing 100 project POM files individually and achieve a centralized configuration

【代码】To avoid editing 100 project POM files individually and achieve a centralized configuration。

2024-12-26 14:30:02 519

原创 You have two projects that require different versions of the same package dependency

【代码】You have two projects that require different versions of the same package dependency。

2024-12-26 14:22:36 809

原创 Several types of Maven repositories

【代码】Several types of Maven repositories。

2024-12-26 14:09:18 688

原创 AI 接入wechat 微信,dingtalk钉钉 教程(需要协助软件,可以评论私聊我)

注意:本教程完成后,程序将在你的电脑本地运行,假如你关掉了窗口,那么进程也就结束。15、保存上述文件,然后在当前文件下,找到plugins/godcmd文件夹,复制config.json.template重命名为 config.json。(2)如果你发现突然不管用了,你可以点击一下窗口,然后点一下空格。1、点击进入https://ollama.com/download,根据你的电脑系统,下载Ollama。mac系统步骤也是一样,只是打开命令符的命令些许不同,直接把命令扔给大模型,转换成mac的命令就好了。

2024-12-24 17:31:38 792 1

原创 The cache size in MongoDB‘s WiredTiger storage engine directly affects its performance

【代码】The cache size in MongoDB‘s WiredTiger storage engine directly affects its performance。

2024-12-23 14:30:43 826

原创 To use only local configuration in your Spring Boot application

【代码】To use only local configuration in your Spring Boot application。

2024-12-21 15:45:36 965

原创 The error “Properties in parent definition are prohibited“ occurs because Maven does not allow

The error "Properties in parent definition are prohibited" occurs because Maven does not allow property substitution (e.g., ) in the tag of the section. To work around this limitation, you can use Maven profiles, or avoid directly using properties in the

2024-12-20 16:40:41 546

原创 SendCloud to configure an email template

【代码】SendCloud to configure an email template。

2024-12-19 15:18:25 266

原创 To compress a document and save it as a ZIP file in Java

【代码】To compress a document and save it as a ZIP file in Java。

2024-12-19 11:32:37 285

原创 InfluxDB cluster is not functioning as expected

If your。

2024-12-18 17:12:43 995

新能源光伏华为白皮书!

新能源光伏华为白皮书!

2024-03-28

java消息服务(第二版)

很好的java,系统之间的访问,我原先都不了解相关知识,看过之后,有了很清楚的认识。

2015-10-20

thinking in java

know about java ,the book is very good for chinese who know much english.in all ,it is good

2015-03-02

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