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ninjaframework / ninja-appengine

Google App Engine support for Ninja Framework
Apache License 2.0
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Help with Hello World app #16

Open ufmemo opened 9 years ago

ufmemo commented 9 years ago

We're in the process of evaluating lightweight Java web frameworks for Java & GAE. The Ninja framework documentation indicates this is a great fit. I have spent three full days trying to get a basic hello world styled app to run on GAE but haven't been able to get past this issue.

Uncaught exception from servlet java.lang.ExceptionInInitializerError at org.slf4j.LoggerFactory.reportMultipleBindingAmbiguity(LoggerFactory.java:259) at org.slf4j.LoggerFactory.bind(LoggerFactory.java:139) at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:120) at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:331) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:283) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:304) at ninja.utils.NinjaPropertiesImpl.(NinjaPropertiesImpl.java:40) at ninja.servlet.NinjaServletListener.getInjector(NinjaServletListener.java:103)

I've tried to remove every reference to slf4j but no luck. Any help would be much appreciated. I've used the maven archetype for the GAE Blog application, created a basic GAE app and then imported all the Ninja dependencies, both yield the same frustrating results.

Thanks for the help in advance.

raphaelbauer commented 9 years ago

Hey ufmemo,

the GAE is a bit of a diva sometimes. The latest GAE introduced a bug? which results in the wrong dependencies being sent via the upload goal to GAE. The solution to your problem is to exclude the log stuff from the test utils like so:

    <dependency>

        <groupId>org.ninjaframework</groupId>

        <artifactId>ninja-test-utilities</artifactId>

        <version>${ninja.version}</version>

        <scope>test</scope>

          <exclusions>

            <exclusion>

                <artifactId>logback-classic</artifactId>

                <groupId>ch.qos.logback</groupId>

            </exclusion>

        </exclusions>

    </dependency>

Cheers,

Raphael

On Tue, Oct 6, 2015 at 6:44 AM, ufmemo notifications@github.com wrote:

We're in the process of evaluating lightweight Java web frameworks for Java & GAE. The Ninja framework documentation indicates this is a great fit. I have spent three full days trying to get a basic hello world styled app to run on GAE but haven't been able to get past this issue.

Uncaught exception from servlet java.lang.ExceptionInInitializerError at org.slf4j.LoggerFactory.reportMultipleBindingAmbiguity(LoggerFactory.java:259) at org.slf4j.LoggerFactory.bind(LoggerFactory.java:139) at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:120) at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:331) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:283) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:304) at ninja.utils.NinjaPropertiesImpl.(NinjaPropertiesImpl.java:40) at ninja.servlet.NinjaServletListener.getInjector(NinjaServletListener.java:103)

I've tried to remove every reference to slf4j but no luck. Any help would be much appreciated. I've used the maven archetype for the GAE Blog application, created a basic GAE app and then imported all the Ninja dependencies, both yield the same frustrating results.

Thanks for the help in advance.

— Reply to this email directly or view it on GitHub https://github.com/ninjaframework/ninja-appengine/issues/16.