ratpack / example-ratpack-gradle-groovy-app

An example of a Groovy Ratpack app built with Gradle.

What is Ratpack?

Ratpack is a simple, capable, toolkit for creating high performance web applications.

Ratpack is built on Java and the Netty event-driven networking engine. The API is optimized for Groovy and Java 8.

Optional Google Guice integration provides a foundation for scaling your application in size in a managed way.

Optional Gradle build time support makes building and testing applications a breeze.

http://www.ratpack.io

Looking to contribute?

Please see CONTRIBUTING.md

example-ratpack-gradle-groovy-app's Issues

println "hello" ... in web-console causes unhandled exception on the server side

Groovy 2.4.5, JDK 9-ea, Gradle 2.11

[ratpack-compute-1-1] ERROR ratpack.error.internal.DefaultDevelopmentErrorHandler - exception thrown for request to /execute
ratpack.render.RendererException: Renderer 'ratpack.example.groovywebconsole.ScriptResultRenderer@3b9f982' failed to render 'ratpack.example.groovywebconsole.ScriptResult@5ed2929f'
    at ratpack.render.internal.DefaultRenderController.doRender(DefaultRenderController.java:71)
    at ratpack.render.internal.DefaultRenderController.doRender(DefaultRenderController.java:58)
    at ratpack.render.internal.DefaultRenderController.render(DefaultRenderController.java:43)
    at ratpack.handling.internal.DefaultContext.render(DefaultContext.java:270)
    at ratpack.groovy.handling.internal.DefaultGroovyContext.render(DefaultGroovyContext.java:161)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:520)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
    at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:382)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1016)
    at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:163)
    at ratpack$_run_closure1$_closure3$_closure6$_closure9.doCall(ratpack.groovy:25)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:520)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
    at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:292)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1016)
    at groovy.lang.Closure.call(Closure.java:423)
    at org.codehaus.groovy.runtime.ConvertedClosure.invokeCustom(ConvertedCjava:51)
    at org.codehaus.groovy.runtime.ConversionHandler.invoke(ConversionHandler.java:103)
    at com.sun.proxy.$Proxy14.execute(Unknown Source)
    at ratpack.exec.internal.DefaultPromise$1.success(DefaultPromise.java:42)
    at ratpack.exec.Promise.lambda$null$33(Promise.java:239)
    at ratpack.exec.Downstream$1.success(Downstream.java:72)
    at ratpack.exec.internal.DefaultExecution$2.lambda$success$128(DefaultExecution.java:174)
    at ratpack.exec.internal.DefaultExecution$StreamHandle.lambda$complete$132(DefaultExecution.java:224)
    at ratpack.exec.internal.DefaultExecution.intercept(DefaultExecution.java:359)
    at ratpack.exec.internal.DefaultExecution.intercept(DefaultExecution.java:331)
    at ratpack.exec.internal.DefaultExecution.drain(DefaultExecution.java:300)
    at ratpack.exec.internal.DefaultExecution.<init>(DefaultExecution.java:103)
    at ratpack.exec.internal.DefaultExecController$1.start(DefaultExecController.java:178)
    at ratpack.handling.internal.DefaultContext.start(DefaultContext.java:159)
    at ratpack.server.internal.NettyHandlerAdapter.channelRead0(NettyHandlerAdapter.java:131)
    at ratpack.server.internal.NettyHandlerAdapter.channelRead0(NettyHandlerAdapter.java:53)
    at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
    at ratpack.server.internal.NettyHandlerAdapter.channelRead(NettyHandlerAdapter.java:85)
    at io.netty.channel.ChannelHandlerInvokerUtil.invokeChannelReadNow(ChannelHandlerInvokerUtil.java:83)
    at io.netty.channel.DefaultChannelHandlerInvoker$7.run(DefaultChannelHandlerInvoker.java:158)
    at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:322)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:356)
    at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:703)
    at ratpack.exec.internal.DefaultExecController$ExecControllerBindingThreadFactory.lambda$newThread$139(DefaultExecController.java:116)
    at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDr.run(DefaultThreadFactory.java:137)
    at java.lang.Thread.run(Thread.java:804)
Caused by: java.lang.ClassCastException: [B cannot be cast to [C
    at groovy.json.internal.FastStringUtils$StringImplementation$1.toCharArray(FastStringUtils.java:89)
    at groovy.json.internal.FastStringUtils.toCharArray(FastStringUtils.java:174)
    at groovy.json.internal.CharBuf.addJsonFieldName(CharBuf.java:515)
    at groovy.json.JsonOutput.writeMap(JsonOutput.java:420)
    at groovy.json.JsonOutput.writeObject(JsonOutput.java:291)
    at groovy.json.JsonOutput.toJson(JsonOutput.java:184)
    at ratpack.example.groovywebconsole.ScriptResultRenderer$_render_closure1$_closure2.doCall(ScriptResultRenderer.groovy:16)
    at ratpack.example.groovywebconsole.ScriptResultRenderer$_render_closure1$_closure2.doCall(ScriptResultRenderer.groovy)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:520)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
    at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:292)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1016)
    at groovy.lang.Closure.call(Closure.java:423)
    at org.codehaus.groovy.runtime.ConvertedClosure.invokeCustom(ConvertedClosure.java:51)
    at org.codehaus.groovy.runtime.ConversionHandler.invoke(ConversionHandler.java:103)
    at com.sun.proxy.$Proxy32.execute(Unknown Source)
    at ratpack.handling.internal.ContentNegotiationHandler.handle(ContentNegotiationHandler.java:61)
    at ratpack.handling.internal.DefaultContext.byContent(DefaultContext.java:421)
    at ratpack.groovy.handling.internal.DefaultGroovyContext.byContent(DefaultGroovyContext.java:79)
    at ratpack.example.groovywebconsole.ScriptResultRenderer.render(ScriptResultRenderer.groovy:14)
    at ratpack.example.groovywebconsole.ScriptResultRenderer.render(ScriptResultRenderer.groovy)
    at ratpack.groovy.render.GroovyRendererSupport.render(GroovyRendererSupport.java:39)
    at ratpack.render.internal.DefaultRenderController.doRender(DefaultRenderController.java:68)
    ... 50 more

Template import error

gradlew run

ratpack.groovy: 6: unable to resolve class org.ratpackframework.groovy.templating.Template
 @ line 6, column 1.
   import static org.ratpackframework.groovy.templating.Template.groovyTemplate
   ^

unable to resolve class org.ratpackframework.render.ByTypeRenderer

Hi, when I git clone and gradlew run this project I get the below error:

...
:compileGroovy
startup failed:
.../example-ratpack-gradle-groovy-app/src/main/groovy/groovywebconsole/ScriptResultRenderer.groovy: 4: unable to resolve class org.ratpackframework.render.ByTypeRenderer
@ line 4, column 1.
import org.ratpackframework.render.ByTypeRenderer
^

I can't see ByTypeRenderer in http://www.ratpack-framework.org/manual/current/api/index.html doco

Current 0.9.0-SNAPSHOT won't build, can't find Groovy or Ratpack classes

./gradlew run gives the following output:

:compileGroovy
startup failed:
/Users/sean/git/example-ratpack-gradle-groovy-app/src/main/groovy/groovywebconsole/ScriptExecutor.groovy: 4: unable to resolve class org.codehaus.groovy.runtime.StackTraceUtils
@ line 4, column 1.
import org.codehaus.groovy.runtime.StackTraceUtils
^

/Users/sean/git/example-ratpack-gradle-groovy-app/src/main/groovy/groovywebconsole/ScriptExecutor.groovy: 3: unable to resolve class org.codehaus.groovy.control.MultipleCompilationErrorsException
@ line 3, column 1.
import org.codehaus.groovy.control.MultipleCompilationErrorsException
^

/Users/sean/git/example-ratpack-gradle-groovy-app/src/main/groovy/groovywebconsole/ScriptExecutor.groovy: 17: unable to resolve class Binding
@ line 17, column 24.
def aBinding = new Binding([out: printStream])
^

/Users/sean/git/example-ratpack-gradle-groovy-app/src/main/groovy/groovywebconsole/ScriptExecutor.groovy: 22: unable to resolve class MetaClassRegistryChangeEventListener
@ line 22, column 11.
} as MetaClassRegistryChangeEventListener
^

/Users/sean/git/example-ratpack-gradle-groovy-app/src/main/groovy/groovywebconsole/ScriptExecutor.groovy: 20: unable to resolve class MetaClassRegistryChangeEvent
@ line 20, column 24.
def listener = { MetaClassRegistryChangeEvent event ->
^

/Users/sean/git/example-ratpack-gradle-groovy-app/src/main/groovy/groovywebconsole/ScriptExecutor.groovy: 34: unable to resolve class GroovyShell
@ line 34, column 22.
result = new GroovyShell(aBinding).evaluate(scriptText)
^

/Users/sean/git/example-ratpack-gradle-groovy-app/src/main/groovy/groovywebconsole/ScriptExecutor.groovy: 45: unable to resolve class MetaClassRegistryChangeEvent
@ line 45, column 28.
emcEvents.each { MetaClassRegistryChangeEvent event ->
^

7 errors

:compileGroovy FAILED

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':compileGroovy'.

  Compilation failed; see the compiler error output for details.

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Update Gradle to 2.11 so that it can handle JSK 9 'early access' too.

Unzipping /Users/paul/.gradle/wrapper/dists/gradle-2.6-bin/41mo8i0dq1d1kjiseo0r47d25o/gradle-2.6-bin.zip to /Users/paul/.gradle/wrapper/dists/gradle-2.6-bin/41mo8i0dq1d1kjiseo0r47d25o
Set executable permissions for: /Users/paul/.gradle/wrapper/dists/gradle-2.6-bin/41mo8i0dq1d1kjiseo0r47d25o/gradle-2.6/bin/gradle

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine java version from '9-ea'.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

Update to Ratpack 1.0.0-rc1

Please verify and update examples if needed to Ratpack 1.0.0-rc1