Getting started
Spring Data REST is itself a Spring MVC application and is designed in such a way that it should integrate with your existing Spring MVC applications with little effort. An existing (or future) layer of services can run alongside Spring Data REST with only minor additional work.
Adding Spring Data REST to a Spring Boot Project
The simplest way to get to started is to build a Spring Boot application because Spring Boot has a starter for Spring Data REST and uses auto-configuration. The following example shows how to use Gradle to include Spring Data Rest in a Spring Boot project:
dependencies {
...
compile("org.springframework.boot:spring-boot-starter-data-rest")
...
}
The following example shows how to use Maven to include Spring Data Rest in a Spring Boot project:
<dependencies>
...
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
...
</dependencies>
You need not supply the version number if you use the Spring Boot Gradle plugin or the Spring Boot Maven plugin. |
When you use Spring Boot, Spring Data REST gets configured automatically.
Adding Spring Data REST to a Gradle project
To add Spring Data REST to a Gradle-based project, add the spring-data-rest-webmvc
artifact to your compile-time dependencies, as follows:
dependencies {
… other project dependencies
compile("org.springframework.data:spring-data-rest-webmvc:4.3.4")
}
Adding Spring Data REST to a Maven project
To add Spring Data REST to a Maven-based project, add the spring-data-rest-webmvc
artifact to your compile-time dependencies, as follows:
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-rest-webmvc</artifactId>
<version>4.3.4</version>
</dependency>
Configuring Spring Data REST
To install Spring Data REST alongside your existing Spring MVC application, you need to include the appropriate MVC configuration.
Spring Data REST configuration is defined in a class called RepositoryRestMvcConfiguration
and you can import that class into your application’s configuration.
This step is unnecessary if you use Spring Boot’s auto-configuration. Spring Boot automatically enables Spring Data REST when you include spring-boot-starter-data-rest and, in your list of dependencies, your app is flagged with either @SpringBootApplication or @EnableAutoConfiguration .
|
To customize the configuration, register a RepositoryRestConfigurer
and implement or override the configure…
-methods relevant to your use case.
Make sure you also configure Spring Data repositories for the store you use. For details on that, see the reference documentation for the corresponding Spring Data module.
Basic Settings for Spring Data REST
This section covers the basic settings that you can manipulate when you configure a Spring Data REST application, including:
Setting the Repository Detection Strategy
Spring Data REST uses a RepositoryDetectionStrategy
to determine whether a repository is exported as a REST resource. The RepositoryDiscoveryStrategies
enumeration includes the following values:
Name |
Description |
|
Exposes all public repository interfaces but considers the |
|
Exposes all repositories independently of type visibility and annotations. |
|
Only repositories annotated with |
|
Only public repositories annotated are exposed. |
Changing the Base URI
By default, Spring Data REST serves up REST resources at the root URI, '/'. There are multiple ways to change the base path.
With Spring Boot 1.2 and later versions, you can do change the base URI by setting a single property in application.properties
, as follows:
spring.data.rest.basePath=/api
With Spring Boot 1.1 or earlier, or if you are not using Spring Boot, you can do the following:
@Configuration
class CustomRestMvcConfiguration {
@Bean
public RepositoryRestConfigurer repositoryRestConfigurer() {
return new RepositoryRestConfigurer() {
@Override
public void configureRepositoryRestConfiguration(RepositoryRestConfiguration config, CorsRegistry cors) {
config.setBasePath("/api");
}
};
}
}
Alternatively, you can register a custom implementation of RepositoryRestConfigurer
as a Spring bean and make sure it gets picked up by component scanning, as follows:
@Component
public class CustomizedRestMvcConfiguration extends RepositoryRestConfigurer {
@Override
public void configureRepositoryRestConfiguration(RepositoryRestConfiguration config, CorsRegistry cors) {
config.setBasePath("/api");
}
}
Both of the preceding approaches change the base path to /api
.
Changing Other Spring Data REST Properties
You can alter the following properties:
Property |
Description |
|
the root URI for Spring Data REST |
|
change the default for the number of items served in a single page |
|
change the maximum number of items in a single page |
|
change the name of the query parameter for selecting pages |
|
change the name of the query parameter for the number of items to show in a page |
|
change the name of the query parameter for sorting |
|
change the default media type to use when none is specified |
|
change whether a body should be returned when creating a new entity |
|
change whether a body should be returned when updating an entity |
Starting the Application
At this point, you must also configure your key data store.
Spring Data REST officially supports:
The following Getting Started guides can help you get up and running quickly:
These linked guides introduce how to add dependencies for the related data store, configure domain objects, and define repositories.
You can run your application as either a Spring Boot app (with the links shown earlier) or configure it as a classic Spring MVC app.
In general, Spring Data REST does not add functionality to a given data store. This means that, by definition, it should work with any Spring Data project that supports the repository programming model. The data stores listed above are the ones for which we have written integration tests to verify that Spring Data REST works with them. |
From this point, you can customize Spring Data REST with various options.