FullStack SpringBoot (2+) - Practical Solutions

Set up a basic spring boot project structure and add dependencies, including html templates and pdf libraries, to generate on-the-fly PDFs with images, barcodes, and signing.

Create a backend pdf workflow by translating html to pdf using a spring template engine, building a pdf generator service, and streaming a binary output stream to the browser.

Create a dynamic pdf on the fly using a pdf generator service via pdf controller endpoint. Return it to the browser as a downloadable file with headers and content type.

Explore how to format pdfs from html using css, including bootstrap styles, inline style attributes, and embedded css, to generate consistent pdf output from html to pdf.

Embed images into PDFs by encoding them in base64 within HTML for direct rendering. Build a utility to convert disk images to base64 and reference them in templates.

Embed images in pdf by converting an image to base64 and referencing a context variable image one in the html-to-pdf render, then verify by running the app.

Embed barcodes into PDF on the fly by generating barcode images with Google libraries, converting to base64, and rendering via HTML for PDF creation.

Enhance pdf creation by adding security features using a pdf stamper, enabling encryption, and setting passwords and permissions like printing while restricting copying or editing.

Download two truetype fonts into the resources folder and configure a render font resource resolver with their URLs to apply a font family in the HTML that governs PDF output.

Learn to set up a basic project structure and dependencies to dynamically export data to an Excel file with Apache POI, manage Maven configuration, and ensure Spring Boot 2.7 compatibility.

Implement a Spring Boot backend that generates an Excel workbook with sheets, rows, and cells, exposing an endpoint through a controller and a dedicated axle generator service.

Create an on-the-fly excel file endpoint in a spring boot controller by using an excel generator service to stream a workbook as an application/octet-stream attachment named excel for browser download.

Format Excel output by creating a cell style object, defining borders and font properties, and applying the style to multiple cells for bold, green text.

Embed images into Excel sheets by creating an embed image method that converts PNG or JPEG files to bytes, adds them to the workbook, and positions them on sheets.

Explore GridFS in MongoDB for storing large files and metadata beyond the 16MB limit, using Spring Boot with MongoDB starter. Learn its use cases, sharding, and easy integration.

Learn to store and retrieve file uploads with GridFS in MongoDB using a Spring Boot backend. Build the attachment service, handle multipart files, input streams, and metadata with GridFS operations.

Create a Thymeleaf frontend file upload flow with a Spring endpoint that handles multipart files, stores them in GridFS, uses post and get mappings, and redirects with flash messages.

Enhance the attachment service by implementing GridFS operations to list all files, retrieve a file by ID, and delete files via criteria for backend management and template display.

Learn to list files stored in GridFS on a frontend table, and implement download and delete actions with Spring Boot endpoints, including building the download response and user feedback.

Store metadata with files in grid fs as a map-like object, so keys map to content that can be strings, numbers, or arrays for easy retrieval and filtering.

Set up a minimal Spring Boot project with an embedded SMTP server for inbound mail using the subset SMTP dependency, plus Spring Data and MongoDB for storing emails.

Implement the deliver method to process incoming emails via a simple message listener and smtp server, creating a mime message from the input stream and logging the subject.

Externalize smtp host and port via application properties to enable flexible startup with environment profiles, enabling or disabling the smtp server and logging configuration status with vault overrides for testing.

Learn how to persist processed incoming emails in a Spring Boot app by modeling a MongoDB email entity, wiring a repository, and saving subject, from, and body.