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SwarnadeepGhoshSwarnadeepGhosh
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Changed DB from mySQL to Postgre as mySQL db expired
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‎.factorypath

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<factorypathentry kind="VARJAR" id="M2_REPO/org/springframework/spring-webmvc/5.3.8/spring-webmvc-5.3.8.jar" enabled="true" runInBatchMode="false"/>
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<factorypathentry kind="VARJAR" id="M2_REPO/org/springframework/spring-expression/5.3.8/spring-expression-5.3.8.jar" enabled="true" runInBatchMode="false"/>
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<factorypathentry kind="VARJAR" id="M2_REPO/mysql/mysql-connector-java/8.0.25/mysql-connector-java-8.0.25.jar" enabled="true" runInBatchMode="false"/>
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<factorypathentry kind="VARJAR" id="M2_REPO/org/postgresql/postgresql/42.2.22/postgresql-42.2.22.jar" enabled="true" runInBatchMode="false"/>
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<factorypathentry kind="VARJAR" id="M2_REPO/org/checkerframework/checker-qual/3.5.0/checker-qual-3.5.0.jar" enabled="true" runInBatchMode="false"/>
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<factorypathentry kind="VARJAR" id="M2_REPO/org/projectlombok/lombok/1.18.20/lombok-1.18.20.jar" enabled="true" runInBatchMode="false"/>
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<factorypathentry kind="VARJAR" id="M2_REPO/io/springfox/springfox-swagger2/2.9.2/springfox-swagger2-2.9.2.jar" enabled="true" runInBatchMode="false"/>
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<factorypathentry kind="VARJAR" id="M2_REPO/io/swagger/swagger-annotations/1.5.20/swagger-annotations-1.5.20.jar" enabled="true" runInBatchMode="false"/>

‎CourseAPI-Spring-Starter.md

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# CourseAPI-Spring-Starter - Tutorial
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[TOC]
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**Prerequisites and Installation**
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### Table of contents
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- [Prerequisites and Installation](#prerequisites-and-installation)
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- [Creating Spring Boot Project](#creating-spring-boot-project)
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- [Starting a Spring Boot App](#starting-a-spring-boot-app)
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- [Adding a REST Controller](#adding-a-rest-controller)
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- [Returning Objects From Controller](#returning-objects-from-controller)
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- [Behind the Scenes](#behind-the-scenes)
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- [Bill Of Materials](#bill-of-materials)
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- [Embedded Servlet Container](#embedded-servlet-container)
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- [Spring MVC- The View Tier](#spring-mvc--the-view-tier)
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- [Topic API - The 1st REST Api we'll build](#topic-api---the-1st-rest-api-well-build)
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- [Creating Business Service](#creating-business-service)
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- [Getting a specific Topic](#getting-a-specific-topic)
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- [Adding new resource using POST](#adding-new-resource-using-post)
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- [Implementing Update using PUT](#implementing-update-using-put)
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- [Implementing DELETE using DELETE](#implementing-delete-using-delete)
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- [Ways to Start a Spring Boot App](#ways-to-start-a-spring-boot-app)
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- [Using application properties](#using-application-properties)
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- [Spring Data JPA](#spring-data-jpa)
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- [Creating a Spring Data JPA Repository](#creating-a-spring-data-jpa-repository)
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- [Making CRUD operations with Repository](#making-crud-operations-with-repository)
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- [Course APIs - Creation](#course-apis---creation)
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- [Adding Entity Relationship and Extending Repository](#adding-entity-relationship-and-extending-repository)
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- [Lesson APIs](#lesson-apis)
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- [Actuator - Monitoring App](#actuator---monitoring-app)
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- [Swagger (Documentation Tool)](#swagger-documentation-tool)
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- [Packaging Production Ready App](#packaging-production-ready-app)
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### Prerequisites and Installation
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- STS 4
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- JDK 8 or higher
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### Changing DB from MySQL to PostgreSQL
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***pom.xml***
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```xml
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<dependency>
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<groupId>org.postgresql</groupId>
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<artifactId>postgresql</artifactId>
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<scope>runtime</scope>
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</dependency>
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```
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***application.properties***
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```properties
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spring.jpa.hibernate.ddl-auto:update
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spring.jpa.show-sql: true
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# Connecting to Postgres Database
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#spring.datasource.url=jdbc:postgresql://host:port/database
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spring.datasource.url=jdbc:postgresql://free-tier12.aws-ap-south-1.cockroachlabs.cloud:26257/swarna-db-200.defaultdb
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spring.datasource.username=swarnadeep
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spring.datasource.password=<my_password>
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spring.datasource.driver-class-name=org.postgresql.Driver
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spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQLDialect
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```
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‎pom.xml

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<artifactId>mysql-connector-java</artifactId>
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<scope>runtime</scope>
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</dependency>
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<dependency>
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<groupId>org.postgresql</groupId>
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<artifactId>postgresql</artifactId>
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<scope>runtime</scope>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<optional>true</optional>
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</dependency>
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<!-- Production Grade API Documentaion Tool -->
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<dependency>
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<groupId>io.springfox</groupId>
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<artifactId>springfox-swagger2</artifactId>
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<version>2.9.2</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger-ui -->
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<dependency>
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<groupId>io.springfox</groupId>
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<artifactId>springfox-swagger-ui</artifactId>
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<version>2.9.2</version>
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</dependency>
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<!-- Production Grade API Documentation Tool -->
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<dependency>
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<groupId>io.springfox</groupId>
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<artifactId>springfox-swagger2</artifactId>
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<version>2.9.2</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger-ui -->
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<dependency>
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<groupId>io.springfox</groupId>
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<artifactId>springfox-swagger-ui</artifactId>
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<version>2.9.2</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>

‎src/main/resources/application.properties

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server.port=8080
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#mySQL Database Configurations
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#JPA config
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#update means directly change in db while I run application
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spring.jpa.hibernate.ddl-auto:update
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spring.datasource.url=jdbc:mysql://sql6.freesqldatabase.com:3306/sql6472211
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spring.datasource.username=sql6472211
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spring.datasource.password=BKZrwMePLL
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spring.jpa.show-sql: true
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#mySQL Database Configurations
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#spring.datasource.url=jdbc:mysql://sql6.freesqldatabase.com:3306/sql6472211
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#spring.datasource.username=sql6472211
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#spring.datasource.password=BKZrwMePLL
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#spring.datasource.driver-class-name=com.mysql.jdbc.Driver
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spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
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#spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
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#spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect
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spring.jpa.show-sql: true
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# Connecting to Postgres Database
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#spring.datasource.url=jdbc:postgresql://host:port/database
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spring.datasource.url=jdbc:postgresql://free-tier12.aws-ap-south-1.cockroachlabs.cloud:26257/swarna-db-200.defaultdb
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spring.datasource.username=swarnadeep
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spring.datasource.password=uLYrds69nT_WNO5vEQn9rQ
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spring.datasource.driver-class-name=org.postgresql.Driver
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spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQLDialect
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#Below 2 lines will be used by Actuator
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management.port=8080

‎target/CourseAPI-Spring-Starter-0.0.1-SNAPSHOT.jar

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‎target/CourseAPI-Spring-Starter-0.0.1-SNAPSHOT.jar.original

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‎target/classes/application.properties

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server.port=8080
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#mySQL Database Configurations
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#JPA config
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#update means directly change in db while I run application
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spring.jpa.hibernate.ddl-auto:update
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spring.datasource.url=jdbc:mysql://sql6.freesqldatabase.com:3306/sql6472211
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spring.datasource.username=sql6472211
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spring.datasource.password=BKZrwMePLL
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spring.jpa.show-sql: true
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#mySQL Database Configurations
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#spring.datasource.url=jdbc:mysql://sql6.freesqldatabase.com:3306/sql6472211
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#spring.datasource.username=sql6472211
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#spring.datasource.password=BKZrwMePLL
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#spring.datasource.driver-class-name=com.mysql.jdbc.Driver
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spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
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#spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
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#spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect
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spring.jpa.show-sql: true
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# Connecting to Postgres Database
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#spring.datasource.url=jdbc:postgresql://host:port/database
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spring.datasource.url=jdbc:postgresql://free-tier12.aws-ap-south-1.cockroachlabs.cloud:26257/swarna-db-200.defaultdb
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spring.datasource.username=swarnadeep
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spring.datasource.password=uLYrds69nT_WNO5vEQn9rQ
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spring.datasource.driver-class-name=org.postgresql.Driver
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spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQLDialect
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#Below 2 lines will be used by Actuator
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management.port=8080

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