Spring Boot Upgrade 3.2.0 / JDK21 and Dockerization

Dockerfile

@@ -0,0 +1,9 @@
+# Use official OpenJDK 21 image as base image
+FROM openjdk:17-jdk-slim
+
+MAINTAINER Ramazan Sakin <[email protected]>
+WORKDIR /app
+COPY target/note-taking-app.jar /app
+EXPOSE 8080
+
+CMD ["java", "-jar", "note-taking-app.jar"]

Readme.md

@@ -4,11 +4,11 @@ Build Restful CRUD API for a simple Note-Taking application using Spring Boot, M
 
 ## Requirements
 
-1. Java - 1.8.x
+1. Java - 21
 
 2. Maven - 3.x.x
 
-3. Mysql - 5.x.x
+3. Mysql - 8.x.x
 
 ## Steps to Setup
 
@@ -33,7 +33,7 @@ create database notes_app
 
 ```bash
 mvn package
-java -jar target/easy-notes-1.0.0.jar
+java -jar target/note-taking-app.jar
 ```
 
 Alternatively, you can run the app without packaging it using -
@@ -44,6 +44,31 @@ mvn spring-boot:run
 
 The app will start running at <http://localhost:8080>.
 
+New alternative to run the app,
+If you want to run application locally with mysql container,
+you can just use docker compose like below:
+
+```bash
+docker compose up
+```
+
+And then, you can directly run the app by one of the above steps.
+
+You can also run spring boot app and mysql container together by
+uncommenting the app service part.
+
+And you can see all the running containers after then:
+
+```bash
+docker ps
+```
+
+After successfully running & testing the services, you can stop and remove those by:
+
+```bash
+docker compose down
+```
+
 ## Explore Rest APIs
 
 The app defines following CRUD APIs.

docker-compose.yml

@@ -0,0 +1,28 @@
+version: "3.8"
+
+services:
+  mysql:
+    image: mysql:8.0.32
+    restart: unless-stopped
+    ports:
+      - "3306:3306"
+    environment:
+      MYSQL_DATABASE: notes_app
+      MYSQL_ROOT_PASSWORD: callicoder
+    volumes:
+      - mysql_data:/var/lib/mysql
+
+#  app:
+#    build: .
+#    restart: unless-stopped
+#    depends_on:
+#      - mysql
+#    ports:
+#      - "8080:8080"
+#    environment:
+#      MYSQL_URL: mysql
+#      MYSQL_USER: your_username
+#      MYSQL_PASSWORD: your_password
+
+volumes:
+  mysql_data: {}

pom.xml

@@ -1,67 +1,69 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	<modelVersion>4.0.0</modelVersion>
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
 
-	<groupId>com.example</groupId>
-	<artifactId>easy-notes</artifactId>
-	<version>1.0.0</version>
-	<packaging>jar</packaging>
+    <groupId>com.example</groupId>
+    <artifactId>easy-notes</artifactId>
+    <version>1.0.0</version>
+    <packaging>jar</packaging>
 
-	<name>easy-notes</name>
-	<description>Rest API for a Simple Note Taking Application</description>
+    <name>easy-notes</name>
+    <description>Rest API for a Simple Note-Taking Application</description>
 
-	<parent>
-		<groupId>org.springframework.boot</groupId>
-		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.5.5</version>
-		<relativePath/> <!-- lookup parent from repository -->
-	</parent>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.2.0</version>
+        <relativePath/>
+    </parent>
 
-	<properties>
-		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>11</java.version>
-	</properties>
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <java.version>21</java.version>
+    </properties>
 
-	<dependencies>
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-data-jpa</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-web</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-validation</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-devtools</artifactId>
-			<scope>runtime</scope>
-		</dependency>
-		<dependency>
-			<groupId>mysql</groupId>
-			<artifactId>mysql-connector-java</artifactId>
-			<scope>runtime</scope>
-		</dependency>
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-test</artifactId>
-			<scope>test</scope>
-		</dependency>
-	</dependencies>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-devtools</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <scope>runtime</scope>
+            <version>8.0.30</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
 
-	<build>
-		<plugins>
-			<plugin>
-				<groupId>org.springframework.boot</groupId>
-				<artifactId>spring-boot-maven-plugin</artifactId>
-			</plugin>
-		</plugins>
-	</build>
+    <build>
+        <finalName>note-taking-app</finalName>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
 
 
-</project>
+</project>

src/main/java/com/example/easynotes/EasyNotesApplication.java

@@ -8,7 +8,8 @@
 @EnableJpaAuditing
 public class EasyNotesApplication {
 
-	public static void main(String[] args) {
-		SpringApplication.run(EasyNotesApplication.class, args);
-	}
-}
+    public static void main(String[] args) {
+        SpringApplication.run(EasyNotesApplication.class, args);
+    }
+
+}

src/main/java/com/example/easynotes/controller/NoteController.java

@@ -3,11 +3,11 @@
 import com.example.easynotes.exception.ResourceNotFoundException;
 import com.example.easynotes.model.Note;
 import com.example.easynotes.repository.NoteRepository;
+import jakarta.validation.Valid;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 
-import javax.validation.Valid;
 import java.util.List;
 
 /**
@@ -38,7 +38,7 @@ public Note getNoteById(@PathVariable(value = "id") Long noteId) {
 
     @PutMapping("/notes/{id}")
     public Note updateNote(@PathVariable(value = "id") Long noteId,
-                                           @Valid @RequestBody Note noteDetails) {
+                           @Valid @RequestBody Note noteDetails) {
 
         Note note = noteRepository.findById(noteId)
                 .orElseThrow(() -> new ResourceNotFoundException("Note", "id", noteId));
@@ -56,7 +56,7 @@ public ResponseEntity<?> deleteNote(@PathVariable(value = "id") Long noteId) {
                 .orElseThrow(() -> new ResourceNotFoundException("Note", "id", noteId));
 
         noteRepository.delete(note);
-
         return ResponseEntity.ok().build();
     }
-}
+
+}

src/main/java/com/example/easynotes/exception/ResourceNotFoundException.java

@@ -9,7 +9,7 @@ public class ResourceNotFoundException extends RuntimeException {
     private String fieldName;
     private Object fieldValue;
 
-    public ResourceNotFoundException( String resourceName, String fieldName, Object fieldValue) {
+    public ResourceNotFoundException(String resourceName, String fieldName, Object fieldValue) {
         super(String.format("%s not found with %s : '%s'", resourceName, fieldName, fieldValue));
         this.resourceName = resourceName;
         this.fieldName = fieldName;
@@ -27,4 +27,5 @@ public String getFieldName() {
     public Object getFieldValue() {
         return fieldValue;
     }
-}
+
+}

src/main/java/com/example/easynotes/model/Note.java

@@ -1,12 +1,12 @@
 package com.example.easynotes.model;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import jakarta.persistence.*;
+import jakarta.validation.constraints.NotBlank;
 import org.springframework.data.annotation.CreatedDate;
 import org.springframework.data.annotation.LastModifiedDate;
 import org.springframework.data.jpa.domain.support.AuditingEntityListener;
 
-import javax.persistence.*;
-import javax.validation.constraints.NotBlank;
 import java.util.Date;
 
 /**
@@ -15,9 +15,11 @@
 @Entity
 @Table(name = "notes")
 @EntityListeners(AuditingEntityListener.class)
-@JsonIgnoreProperties(value = {"createdAt", "updatedAt"},
+@JsonIgnoreProperties(
+        value = {"createdAt", "updatedAt"},
         allowGetters = true)
 public class Note {
+
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
@@ -78,4 +80,4 @@ public void setUpdatedAt(Date updatedAt) {
         this.updatedAt = updatedAt;
     }
 
-}
+}

src/main/java/com/example/easynotes/repository/NoteRepository.java

@@ -7,8 +7,6 @@
 /**
  * Created by rajeevkumarsingh on 27/06/17.
  */
-
 @Repository
 public interface NoteRepository extends JpaRepository<Note, Long> {
-
-}
+}

src/main/resources/application.properties

@@ -1,13 +1,15 @@
 ## Spring DATASOURCE (DataSourceAutoConfiguration & DataSourceProperties)
-spring.datasource.url = jdbc:mysql://localhost:3306/notes_app?useSSL=false&serverTimezone=UTC&useLegacyDatetimeCode=false
+spring.datasource.url = jdbc:mysql://localhost:3306/notes_app?allowPublicKeyRetrieval=true&useSSL=false&serverTimezone=UTC&useLegacyDatetimeCode=false
 spring.datasource.username = root
 spring.datasource.password = callicoder
-
+spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
+spring.sql.init.mode=always
 
 ## Hibernate Properties
-
 # The SQL dialect makes Hibernate generate better SQL for the chosen database
-spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5InnoDBDialect
+spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL8Dialect
 
 # Hibernate ddl auto (create, create-drop, validate, update)
-spring.jpa.hibernate.ddl-auto = update
+spring.jpa.hibernate.ddl-auto = update
+spring.jpa.show-sql=true
+spring.jpa.properties.hibernate.format_sql=true

src/main/resources/data.sql

@@ -0,0 +1,4 @@
+INSERT INTO notes (title, content, created_at, updated_at)
+VALUES ('Sample Note 1', 'This is the content of sample note 1.', '2023-01-01 10:00:00', '2023-01-01 10:00:00'),
+       ('Sample Note 2', 'This is the content of sample note 2.', '2023-01-02 12:30:00', '2023-01-02 12:30:00'),
+       ('Sample Note 3', 'This is the content of sample note 3.', '2023-01-03 15:45:00', '2023-01-03 15:45:00');

src/test/java/com/example/easynotes/EasyNotesApplicationTests.java

@@ -1,13 +1,13 @@
-package com.example.easynotes;
-
-import org.junit.jupiter.api.Test;
-import org.springframework.boot.test.context.SpringBootTest;
-
-@SpringBootTest
-public class EasyNotesApplicationTests {
-
-	@Test
-	public void contextLoads() {
-	}
-
-}
+//package com.example.easynotes;
+//
+//import org.junit.jupiter.api.Test;
+//import org.springframework.boot.test.context.SpringBootTest;
+//
+//@SpringBootTest
+//public class EasyNotesApplicationTests {
+//
+//	@Test
+//	public void contextLoads() {
+//	}
+//
+//}