This blog contains a set of small Spring tips.
Auteur: robbertvdzon
List of Spring Boot Starter Dependencies
Core:
- Dev Tools
feat: Reload application on class changes, debug and upload code to remote applications
see: https://www.baeldung.com/spring-boot-devtools
- Security
https://spring.io/guides/gs/securing-web/
https://spring.io/guides/tutorials/spring-boot-oauth2/
https://spring.io/guides/gs/authenticating-ldap/
https://docs.spring.io/spring-boot/docs/2.1.0.RELEASE/reference/htmlsingle/#boot-features-security
- Lombok
- Configuration processor
Using @ConfigurationProperties
see: https://www.baeldung.com/configuration-properties-in-spring-boot
- Session
managing user sessions
see: https://www.baeldung.com/spring-session - Cache
Using @Cacheable
see: https://www.baeldung.com/spring-cache-tutorial - Validation
see: https://spring.io/guides/gs/validating-form-input/ - Retry
Using @Retryable
see: https://www.baeldung.com/spring-retry - Aspects
Create your own aspects using Spring AOP and AspectJ
Index of Spring blogs
Testing the Spring MVC layer
Use “spring-boot-starter-test” to add all dependencies:
org.springframework.boot
spring-boot-starter-test
test
You can annotate the test class with :
- (nothing)
- @SpringBootTest(webEnvironment = MOCK / RANDOM_PORT / DEFINED_PORT)
- @AutoConfigureMockMvc
- @WebMvcTest
To make rest call’s to the controllers, you can use one of the following:
- RestTemplate
- TestRestTemplate
- RestAssuredMockMvc
- MockMvc
- WebTestClient (only when using webflux)
@SpringBootTest will load your complete Spring application, but without the Servlet container when specifying (webEnvironment = MOCK).
When using webEnvironment = RANDOM_PORT, a random port is used (which you can find in the test using @LocalServerPort).
It is also possible to autowire a TestRestTemplate, RestAssuredMockMvc or MockMvc which you can use to test the application using relative url’s.
@MockBean can be used to mock any bean in the application environment.
To test the serialization and deserialization of a JSON object, you can use @JsonTest
To test a web client, you can use @RestClientTest
Examples of using the different annotations and rest clients can be found below:
Spring WebFlux samples and links
Spring5 documentation about webFlux:
https://docs.spring.io/spring/docs/current/spring-framework-reference/web-reactive.html#webflux
Spring Boot documentation about webFlux:
https://docs.spring.io/spring-boot/docs/2.1.0.RELEASE/reference/htmlsingle/#boot-features-webflux
Spring testing documentation about Spring Web Reactive:
https://docs.spring.io/spring/docs/current/spring-framework-reference/testing.html#mock-objects-web-reactive
Spring WebMVC samples and links
Spring5 documentation about webMVC:
https://docs.spring.io/spring/docs/current/spring-framework-reference/web.html
Spring Boot documentation about webMVC:
https://docs.spring.io/spring-boot/docs/2.1.0.RELEASE/reference/htmlsingle/#boot-features-developing-web-applications
Spring testing documentation about MVC Test Framework:
https://docs.spring.io/spring/docs/current/spring-framework-reference/testing.html#spring-mvc-test-framework
Regex in java
Links for using regex in java:
| Cheat sheet by zeroturnaround | : | http://files.zeroturnaround.com/pdf/zt_regular-expressions-cheat-sheet.pdf |
| Good tutorial by Vogella | : | http://www.vogella.com/tutorials/JavaRegularExpressions/article.html |
| Specification | : | https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html |
| Regex tester | : | http://myregexp.com/ |
