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When just importing the ftp example as a maven project, I ran into the issue of a slf4j version discrepancy described here: http://www.slf4j.org/faq.html#IllegalAccessError This is solved by adding the specific version dependency of `slf4j-api`. * Add the specific `slf4j-api` dependency to the Gradle script * Change the dependency scope for `slf4j-` impl to the `runtime`. * Regenerate POMs
Hello World Sample
This is an obvious place to get started. This sample project contains 2 basic sample applications:
- Hello World
- Poller Application
Hello World
The Hello World application demonstrates a simple message flow represented by the diagram below:
Message -> Channel -> ServiceActivator -> QueueChannel
To run the sample simply execute HelloWorldApp in package org.springframework.integration.samples.helloworld. You can also execute that class using the Gradle:
$ gradlew :helloworld:runHelloWorldApp
You should see the following output:
INFO : org.springframework.integration.samples.helloworld.HelloWorldApp - ==> HelloWorldDemo: Hello World
Poller Application
This simple application will print out the current system time twice every 20 seconds.
More specifically, an Inbound Channel Adapter polls for the current system time 2 times every 20 seconds (20000 milliseconds). The resulting message contains as payload the time in milliseconds and the message is sent to a Logging Channel Adapter, which will print the time to the command prompt.
To run the sample simply execute PollerApp in package org.springframework.integration.samples.helloworld. You can also execute that class using the Gradle:
$ gradlew :helloworld:runPollerApp
You should see output like the following:
INFO : org.springframework.integration.samples.helloworld - 1328892135471
INFO : org.springframework.integration.samples.helloworld - 1328892135524