MovieAPI

This is the runthrough of the YT-Tutorial "Fullstack Developement with Java Spring Boot, React and MongoDB" Hosted by freeCodeCamp.org.

Teachers:
Backend: Farhan Hasin Chodhury
Frontend: Gavin Lon @GavinLon

See the original Code on the following repos:
Backend: https://github.com/fhsinchy/movieist\ Frontend: https://github.com/GavinLonDigital/movie-gold-v1

Before you start

I just run through the first part of the tutorials. The backend is done by me. With the React-part/ Frontend I had trouble to follow along, because it is more a codealong, than a tutorial.

Start here

Prerequisites

• Hava Java JDK LTS installed (by this Date 21.01.2023 I used JDK 17) Link: https://www.oracle.com/java/technologies/downloads/#jdk17-windows
• Have an account at MongoDB Atlas https://cloud.mongodb.com
• Install MongoDB Compass for easyaccess to DB
• I use the VSCode-Editor with the following extensions Extension Pack for Java (there will be additional extensions installed, which I don't write down here), Maven for Java, Bracket Pair Colorization Tool, Error Lens, MongoDB for VS Code, One Dark Pro, vscode-icons, XML Tools

Step by Step

1. Setup MongoDB Atlas

• Go to https://cloud.mongodb.com and create a new vluster
• use a shared one, with the minimum requirements it fits best for developing purposes. Using more power on the cloud will cost some bucks, so choose wisley.

2. Initialize Java Spring

• Go to https://start.spring.io/
• On the left side edit the project like needed In this project I went for a Maven-Project in Java and used the Spring Boot Version 3.0.1 The project metadata is selfexplaining: group = com.example artefact = name of application

I went for packaging-format jar and since I installed JDK 17 Java is 17

• On the right side I choose some dependencies I wanted preselected in the jar-File: I went for Lombok, Sping Weg, Sping Data MongoDB and Spring Boot DevTools

• Wit Generate the project-zip gets generated and downloaded.

• unzip it in the project folder and open it with VSC

3. open the configured JavaSpring Projekt and run it

1. Error 8080 is blocked by an running process 1- run netstat -ano to get pid number 2- run taskname /fi “pid eq ” 3- run taskkill /f /PID
2. Error Whitlabelpage 1- no routes are set in the project 2- wit GetMapping and RestController Annotation Routes can be set to the application

4. make configuration in /main/resources/application.properties

1. spring.data.mongodb.database=
2. spring.data.mongodb.uri=

5. Create an .env-File for some security and stop leaking credentials by uploading it to github

1. Spring don't support reading env-Files 1- add new dependecy 2- look at maven repositories for a fitting one 3- Add Dependency in pom.xml under dependencies with groupId (com.example), artifactI(name of repo) and version 4- With the dependency from paul schwarz you can access env-Variables by ${env.} 5- spring.data.mongodb.database=${env.MONGO_DATABASE} spring.data.mongodb.uri= mongodb+srv://${env.MONGO_USER}:${env.MONGO_PASSWORD}@${env.MONGO_CLUSTER}

6. Implementing the Endpoints

1. in java/de/mikedilexa/movies create the classes Movie.java and Review.java
2. For referencing relationships use @DocumentReference 1- look at mongodb reference relationships and do some research
3. Create MovieController.java class
4. Requests against an API are done with REST and the urls 1- Use @RestController and @RequestMapping()

7. Pulling Data from DB

1. Needed: a service class and a repository class
	In RestApis are multiple Layers
	   Controller: Get Request and give a Response
	   Service: use repository and talks to DB
	   Repository: Access-Layer to DB and get Data back

2. In Service Class all the possible Services gets implemented (eg. get all movies, get a movie by id, and so on)
3. In Repository class just the MongoRepository-Class wie Movie and ObjectId gets extended
4. get Data by some other filed than ObjectID --> Do not reveal this to public By defining the string "Optional findMovieByImdb(String imdbId);" in the repository-class MongoDB finds everything to get the requested movie

8. Adding a review

1. taking new mongo template
2. using update movie with new review
3. push the new review to the repository

Create a new Review Controller