The Kentico Cloud Delivery Java SDK is a client library used for retrieving content from Kentico Cloud. You can use the SDK in the form of a Maven dependency.
You can add this to your Gradle project by the following:
repositories {
mavenCentral()
}
dependencies {
compile('com.kenticocloud:delivery:2.0.1')
}
Or via your Maven POM:
<dependency>
<groupId>com.kenticocloud</groupId>
<artifactId>delivery</artifactId>
<version>2.0.1</version>
</dependency>
The DeliveryClient
class is the main class of the SDK. Using this class, you can retrieve content from your Kentico Cloud projects.
To create an instance of the class, you need to provide a project ID.
// Initializes an instance of the DeliveryClient client
DeliveryClient client = new DeliveryClient("975bf280-fd91-488c-994c-2f04416e5ee3");
You can also provide the project ID and other parameters by passing the DeliveryOptions
object to the class constructor. The DeliveryOptions
object can be used to set the following parameters:
setPreviewApiKey(String)
– sets the Delivery Preview API key.setProductionApiKey(String)
- sets the Delivery Client key for secured access.setProjectId(String)
– sets the project identifier.setUsePreviewApi(boolean)
– determines whether to use the Delivery Preview API.setWaitForLoadingNewContent(boolean)
– makes the client instance wait while fetching updated content, useful when acting upon webhook calls.
The DeliveryOptions.builder()
can also simplify creating a DeliveryClient
:
DeliveryClient client = new DeliveryClient(DeliveryOptions.builder()
.projectId("975bf280-fd91-488c-994c-2f04416e5ee3")
.productionApiKey("secured key")
.build());
Once you create a DeliveryClient
, you can start querying your project repository by calling methods on the client instance. See Basic querying for details.
The SDK supports full scale of the API querying and filtering capabilities as described in the API reference.
// Retrieves a list of the specified elements from the first 10 content items of
// the 'brewer' content type, ordered by the 'product_name' element value
ContentItemsListingResponse response = client.getItems(
DeliveryParameterBuilder.params()
.language("es-ES")
.filterEquals("system.type", "brewer")
.projection("image", "price", "product_status", "processing")
.page(null, 10)
.orderByAsc("elements.product_name")
.build();
);
To retrieve unpublished content, you need to create a DeliveryClient
with both Project ID and Preview API key. Each Kentico Cloud project has its own Preview API key.
// Note: Within a single project, we recommend that you work with only
// either the production or preview Delivery API, not both.
DeliveryClient client = new DeliveryClient("YOUR_PROJECT_ID", "YOUR_PREVIEW_API_KEY");
For more details, see Previewing unpublished content using the Delivery API.
Once you have a DeliveryClient
instance, you can start querying your project repository by calling methods on the instance.
// Retrieves a single content item
ContentItemResponse response = client.getItem("about_us");
// Retrieves a list of all content items
ContentItemsListingResponse listingResponse = client.getItems();
For full description of single and multiple content item JSON response formats, see our API reference.
When retrieving a single content item, you get an instance of the ContentItemResponse
class. This class represents the JSON response from the Delivery API endpoint and contains the requested ContentItem
as a property.
When retrieving a list of content items, you get an instance of the ContentItemsListingResponse
. This class represents the JSON response from the Delivery API endpoint and contains:
getPagination()
returns aPagination
object with information about the following:getSkip()
: requested number of content items to skipgetLimit()
: requested page sizegetCount()
: the total number of retrieved content itemsgetNextPage()
: the URL of the next page
- A list of the requested content items
The ContentItem
class provides the following:
getSystem()
returns aSystem
object with metadata such as code name, display name, type, or sitemap location.getElements()
returns a Map containing all the elements included in the response keyed by code names.- Methods for easier access to certain types of content elements such as modular content, or assets.
You can access information about a content item (i.e., its ID, codename, name, location in sitemap, date of last modification, and its content type codename) by using the System
object.
// Retrieves name of an article content item
articleItem.getSystem().getName()
// Retrieves codename of an article content item
articleItem.getSystem().getCodename()
// Retrieves name of the content type of an article content item
articleItem.getSystem().getType()
The SDK provides methods for retrieving content from content elements such as Asset, Text, Rich Text, Multiple choice, etc.
For text elements, you can use the getString
method.
// Retrieves an article text from the 'body_copy' Text element
articleItem.getString("body_copy")
The Rich text element can contain links to other content items within your project. See Resolving links to content items for more details.
// Retrieves a teaser image URL
articleItem.getAssets("teaser_image").get(0).getUrl()
To get a list of options defined in a Multiple choice content element, you first need to retrieve the content element itself. For this purpose, you can use the getContentTypeElement
method, which takes the codename of a content type and the codename of a content element.
// Retrieves the 'processing' element of the 'coffee' content type
MultipleChoiceElement element = (MultipleChoiceElement) client.getContentTypeElement("coffee", "processing");
After you retrieve the Multiple choice element, you can work with its list of options. Each option has the following methods:
Method | Description | Example |
---|---|---|
getName() | The display name of the option. | Dry (Natural) |
getCodename() | The codename of the option. | dry__natural_ |
To put the element's options in a list, you can use the following code:
List<SelectListItem> items = new List<>();
for (Option option : element.getOptions()) {
SelectListItem item = new SelectListItem();
item.setText(option.getName());
item.setValue(option.getCodename());
item.setSelected("semi_dry".equals(option.getCodename()));
}
// Retrieves related articles
articleItem.getModularContent("related_articles")
For more developer resources, visit the Kentico Cloud Developer Hub at https://developer.kenticocloud.com.
Prerequisites:
Required: Java 8 SDK (Oracle & OpenJDK both tested and supported)
Ensure your JAVA_HOME
environment is set. Then build the project via the provided Gradle wrapper.
./gradlew clean build
Optional: JetBrains IntelliJ Idea Import the Gradle project to sync up dependencies.
Check out the contributing page to see the best places to file issues, start discussions, and begin contributing.
We would like to express our thanks to the following people who contributed and made the project possible:
Would you like to become a hero too? Pick an issue and send us a pull request!