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Sample: Information Access With Merchant Proxy

This sample code shows how to realize the Token Request Flow with the Token Merchant Proxy. The Token Request flow enables merchants to request account information from a user. The Token Merchant Proxy is a wrapper server around the Java SDK using a simple HTTP API.

Dependency

The sample requires the proxy as a dependency. Make sure it is configured properly. Refer to this page for more details about its usages.

To start the proxy:

cd merchant-proxy

./gradlew build run

Usage

To build this sample, you need Java Development Kit (JDK) version 8 or later.

To build:

./gradlew shadowJar.

To run:

java -jar app/build/libs/app-*.jar

This starts up a server.

The server shows a web page at localhost:3000. The page has a checkout button. Click the button to start the token request experience. Some banks require you to download the Token App and link your accounts on the app first.

The server will:

  1. Create a token request.
  2. Redirect the user to Token for authentication.
  3. Wait for a callback that contains a token id.
  4. Fetch account, balance, transaction information using the token id.