Flink — Event Time & Watermark

1. Event time: It refers to the time when the data is generated or the time when the data occurs. There are three types of time in Flink: Event Time: Event time, the time when the data is generated, can reflect the time when the data actually occurs. Infestion Time: event reception time Processing Time: […]

What are the solutions for adding watermark to PDF using SpringBoot?

Method 1: Use Apache PDFBox library PDFBox is a popular, free library written in Java that can be used to create, modify, and extract PDF content. PDFBox provides a number of APIs, including the ability to add text watermarks. Add PDFBox dependency First, add PDFBox dependencies in the pom.xml file: <dependency> <groupId>org.apache.pdfbox</groupId> <artifactId>pdfbox</artifactId> <version>2.0.24</version> </dependency> […]

Add text watermark to PDF document through C++

Because PDF documents have better stability and compatibility, more and more contracts, research papers, reports, etc. are now using PDF format. To further protect the content of these important documents from unauthorized copying or use, we can add a watermark to indicate status, ownership or purpose. In response to the need to add text watermarks […]

Spring Boot implements PDF watermarking, the actual battle is coming!

Source: cnblogs.com/hushaojun/p/16285486.html Introduction PDF (Portable Document Format) is a popular file format that can be viewed and printed on multiple operating systems and applications. In some cases, we need to add watermarks to PDF files to make them more recognizable or to protect their copyright. This article will introduce how to use Spring Boot to […]

Watermark development in the front end of the project supports custom content, font size, font, tilt, transparency, left and right spacing, top and bottom spacing

Tip: After the article is written, the table of contents can be automatically generated. For how to generate it, please refer to the help document on the right. Article directory Preface 1. Display effect 2. Usage steps 1. Create a new waterMark.js file 2. Introduce display on home page Summarize Foreword Product manager’s needs: Watermark […]

How to get the link to dy’s watermark-free video

First, get the work ID, which is similar to 6972960481946520868. A long series of digital Douyin-recording a good life (douyin.com) After entering the work ID, the corresponding information will be displayed: Get the complete json file: { “extra”: { “now”: 1698741633395, “logid”: “20231031164033B90F8F2B35B6591A34CA” }, “status_code”: 0, “item_list”: [ { “aweme_id”: “6972960481946520868”, “desc”: “Inspired by the […]

Android calls the Camera class and adds watermarks to pictures and saves them to the SD card

Hello everyone, I am learning Android recently and would like to share some of the results I have learned~~~ Go directly to the code: import android.Manifest; import android.content.Intent; import android.content.pm.PackageManager; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.PixelFormat; import android.hardware.Camera; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.net.Uri; import android.os.Bundle; import […]

Add watermarks to WebGIS tile maps (vector tiles, raster tiles)

Watermark technology Watermark can provide strong evidence of the ownership of products receiving copyright information, and can monitor the spread of protected data, authenticate and control illegal copies, etc. It is also needed in today’s popular online maps Watermark technology protects map data. This article will introduce how to add watermarks to tile maps, including […]