Ecommerce Prototype

Spring Boot Samples
Spring Boot Initializr

Preparing project

• Java
• Maven
• JDK and Java 21
• Packaging War (for web)

Dependency, Spring Boot: 3.3.3

• Developer Tools:
  • Spring Boot DevTools
  • Lombok
• Web:
  • Spring Web
  • Rest Repositories
  • Spring Web Services
• Security
  • Spring Security
• SQL:
  • Spring Data JPA
  • MySql Driver

Folder

/
├── main/
│   ├── java/
│   │   └── packages/
│   │      ├── config/
│   │      ├── controllers/
│   │      ├── entities/
│   │      ├── repositories/
│   │      ├── services/
│   │      ├── util/
│   │      ├── App.java
│   │      └── ServletInitializer.java
│   └── resources/
│          ├── static/
│          └── templates/
└── test/

Annotations

• Classes
  • @Service
  • @Repository
  • @RestController (RestAPI)
  • @RequestMapping
• Entities
  • @Entity
  • @Table
  • @Id
  • @GeneratedValue
  • @Column
  • @CreationTimestamp + @Column(updatable = false)
  • @UpdateTimestamp
  • @OneToOne(mappedBy = "atrib_t2", fetch = FetchType.LAZY/EAGER)
  • @OneToOne(fetch = FetchType.LAZY/EAGER)
    • @JoinColumn(name = "id_t1")
  • @OneToMany(mappedBy ="atrib_t2", fetch = FetchType.LAZY/EAGER)
  • @ManyToOne(fetch = FetchType.LAZY/EAGER)
    • @JoinColumn(name = "id_t1")
  • @ManyToMany(fetch = FetchType.LAZY/EAGER)
    • @JoinTable( name = "t1_t2", joinColumns = @JoinColumn(name = "id_t1"), inverseJoinColumns = @JoinColumn(name = "id_t2"))
  • @ManyToMany(mappedBy = "atrib_t2", fetch = FetchType.LAZY/EAGER)
• Metods
  • @Autowired
  • @GetMapping
  • @PostMapping
  • @PutMapping
  • @DeleteMapping
  • @RequestMapping

Config DB

• Edit application.properties file

spring.mvc.view.prefix=/templates/

# MySQL Database Configuration
spring.datasource.url=jdbc:mysql://localhost:3306/praxis?useSSL=false&serverTimezone=UTC
spring.datasource.username=praxis
spring.datasource.password=praxis
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.jpa.database-platform=org.hibernate.dialect.MySQLDialect

# Hibernate Configuration
spring.jpa.show-sql=true
spring.jpa.properties.hibernate.format_sql=true
spring.jpa.hibernate.ddl-auto=update

Config MVC

• Edit application.properties file

# Enable PUT and DELETE in MVC
spring.mvc.hiddenmethod.filter.enabled=true

Tests

// Mockito with JUnit 5.

@ExtendWith(MockitoExtension.class)

// Mock repository

@Mock
IRepository repository;

// Mocks service

@InjectMocks
Service service;

Some some = new Some(...)
when(repository.method()).thenReturn(some);

Some result = service.method();

assertThat(result).isEqualTo(some);

verify(repository, times(1)).method();

TaskKill

cmd
netstat -ano
netstat -ano | findstr :8080
taskkill /f /pid <pid-number>

Git

git checkout -b branchName                  
git switch main                             
git pull                                    
git branch                                  
git push --set-upstream origin "branchName" 
git commit -m "branchName"                  
git push                                    

git branch                  
git checkout -b develop     
git checkout branchName     
git pull origin develop     
git merge branchName        
git status                  
git push origin branchName  
git switch branchName       
git branch -d branchName    

Seed

• Create data.sql in Resources folder
• Edit application.properties file

// replace this 
spring.jpa.hibernate.ddl-auto=update

// with this
# Seed
spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.defer-datasource-initialization=true
spring.sql.init.mode=always