https://github.com/leosimoes/java-spring-vaadin-customer

Project of a customer CRUD in Java language with Spring Framework and Vaadin.
https://github.com/leosimoes/java-spring-vaadin-customer

java spring vaadin

Last synced: about 2 months ago
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Project of a customer CRUD in Java language with Spring Framework and Vaadin.

• Host: GitHub
• URL: https://github.com/leosimoes/java-spring-vaadin-customer
• Owner: leosimoes
• Created: 2024-04-29T16:21:41.000Z (about 2 years ago)
• Default Branch: master
• Last Pushed: 2024-05-06T00:34:40.000Z (about 2 years ago)
• Last Synced: 2025-01-30T01:16:37.335Z (over 1 year ago)
• Topics: java, spring, vaadin
• Language: Java
• Homepage:
• Size: 795 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Spring and Vaadin - Customer

Author: Leonardo Simões

## Development steps

The project development steps were:

1. Create project (in IntelliJ) with:

- Java language (17);

- Spring Framework (6.2.3);

- Dependencies: Vaadin, JPA, H2, DevTools, Lombok.

![Image-01-IntelliJ](images/Image-01-IntelliJ.png)

2. Configure the H2 database:

- In `build.gradle` configure according to the desired type of use:

* `implementation 'com.h2database:h2'`;

* `runtimeOnly 'com.h2database:h2'`;

* `testImplementation 'com.h2database:h2'`;

- In `application.properties`:

```properties

# ================================================================

#                   APPLICATION

# ================================================================

spring.application.name=Java-Spring-Vaadin-Customer

# ================================================================

#                   DATASOURCE - H2 DATABASE

# ================================================================

spring.datasource.url=jdbc:h2:mem:proddb

spring.datasource.driver-class-name=org.h2.Driver

spring.datasource.username=leo

spring.datasource.password=senha

spring.h2.console.enabled=true

spring.h2.console.path=/h2

```

![Image-02-Terminal-Run](images/Image-02-Terminal-Run.png)

- test access to the H2 console at `http://localhost:8080/h2/`:

![Image-03-B-ConsoleH2](images/Image-03-B-ConsoleH2.png)

Note:

- By default, the usename would be "sa" and the password "", and the h2 console would be disabled.

4. Create `CustomerEntity` class:

- in the `entities` package;

- with attributes UUID id, String firstName, String lastName;

- corresponding to the table named `CUSTOMERS`.

![Image-04-CustomerEntity](images/Image-04-CustomerEntity.png)

5. Create `CustomerRepository` interface:

- in the `repositories` package;

- annotated with `@Repository`;

- extends `JPARepository`;

- with methods:

    * `Optional findById(UUID id);`

    * `Optional findById(UUID id);`

    * `List findByFirstName(String firstName);`

    * `List findByLastName(String lastName);`

    * `List findByFirstNameAndLastName(String firstName, String lastName);`

![Image-05-CustomerRepository](images/Image-05-CustomerRepository.png)

6. Create `MainView` class:

- in the `views` package;

- annotated with `@Route("customers")`;

- extends `VerticalLayout`;

- with a constructor annotated with `@Autowired` with a parameter (repository) and customize the screen inside it.

![Image-06-Screen-01-Create](images/Image-06-Screen-01-Create.png)

![Image-07-Screen-02-Create-Read](images/Image-07-Screen-02-Create-Read.png)

## References

Spring - Guides - Criando UI CRUD com Vaadin:

https://spring.io/guides/gs/crud-with-vaadin