quickstarts/state_management/java/http

Dapr state management (HTTP Client)

In this quickstart, there is a order-processor microservice to demonstrate Dapr's state management API. The service generates messages to store in a state store.

Visit this link for more information about Dapr and State Management.

Note: This example leverages HTTP requests only. If you are looking for the example using the Dapr Client SDK (recommended) click here.

Pre-requisites

• Dapr and Dapr Cli.
• Java JDK 17 (or greater):
  • Microsoft JDK 17
  • Oracle JDK 17
  • OpenJDK 17
• Apache Maven version 3.x.

This quickstart includes one service: Java client service order-processor

Run multiple apps with multi-app run template file

This section shows how to run applications at once using multi-app run template files with dapr run -f .. This enables to you test the interactions between multiple applications.

Open a new terminal window and run order-processor using the multi app run template defined in dapr.yaml:

Run Java service with Dapr

1. Open a new terminal window and navigate to order-processor directory:

  cd ./order-processor
  mvn clean install
  cd ..

2. Run the Java service app with Dapr:

  dapr run -f .

3. Stop and cleanup application process

dapr stop -f .

Run a single app at a time with Dapr (Optional)

1. Open a new terminal window and navigate to order-processor directory:

cd ./order-processor
mvn clean install
cd ..

2. Run the Java service app with Dapr:

cd ./order-processor
dapr run --app-id order-processor --resources-path ../../../resources/ -- java -jar target/OrderProcessingService-0.0.1-SNAPSHOT.jar

3. Stop and cleanup application process

dapr stop --app-id order-processor