I am working on a Java Play 2.1-RC2 application with MongoDB as a data warehouse. I am using the Jongo module to work with MongoDB. Everything went well until I got these errors:
java.lang.NoSuchFieldError: Home
These errors come from my patterns and are caused by using reverse routing. In this particular case, I'm trying to get to my Home controller.
The return route is as follows: @ routes.Home.edit (document.url)
and the route itself: GET / homepage /: url / edit controllers.Home.edit (url)
This worked before then, but started to give these errors since I started working on the MongoDB implementation. I can’t understand what the connection between the two will be. I do not think that I am somehow interfering with routing. This project started as project 2.0.4. The migration to 2.1-RC1 went well, and it seems that 2.1-RC2 still worked. I created my own class of the Model class to work with Mongo models. Could there be anything that causes this behavior?
@JsonTypeInfo(use = JsonTypeInfo.Id.CLASS, property = "_class") public class Model { @JsonProperty("_id") public ObjectId id; public MongoCollection models() { String collectionName = this.getClass().getName() + "s"; return PlayJongo.getCollection(collectionName); } public void save() { models().save(this); } public void update() { this.remove(); this.save(); } public void remove() { models().remove(this.id); } public static class Finder<T> { private final Class<T> type; public Finder(Class<T> type) { this.type = type; } public MongoCollection models() { String collectionName = type.getName() + "s"; return PlayJongo.getCollection(collectionName); } public List<T> all() { List<T> list = new ArrayList<>(); Iterator<T> it = models().find().as(type).iterator(); while (it.hasNext()) { list.add(it.next()); } return list; } public T byId(ObjectId id) { return models().findOne(id).as(type); } public T byUrl(String url) { return models().findOne("{url: #}", url).as(type); } public List<T> byQuery(String query) { List<T> list = new ArrayList<>(); Iterator<T> it = models().find(query).as(type).iterator(); while (it.hasNext()) { list.add(it.next()); } return list; } }
My .sbt plugins:
// Comment to get more information during initialization logLevel := Level.Warn // The Typesafe repository resolvers += "Typesafe repository" at "http://repo.typesafe.com/typesafe/releases/" // Use the Play sbt plugin for Play projects addSbtPlugin("play" % "sbt-plugin" % "2.1-RC2")
My build.properties properties:
sbt.version=0.12.2-RC2
My build.scala:
import sbt._ import Keys._ import play.Project._ object ApplicationBuild extends Build { val appName = "Test" val appVersion = "0.1-SNAPSHOT" val appDependencies = Seq( javaCore, "uk.co.panaxiom" %% "play-jongo" % "0.3" ) val main = play.Project(appName, appVersion, appDependencies).settings( lessEntryPoints <<= (sourceDirectory in Compile)(base => ( (base / "assets" / "css" / "bootstrap.less") +++ (base / "assets" / "css" / "responsive.less") ) ) ) }
The only application.conf lines that might matter are:
playjongo.uri="mongodb://127.0.0.1:27017/test" playjongo.gridfs.enabled=false ehcacheplugin=enabled
And stacktrace:
! @6d48738mo - Internal server error, for (GET) [/] -> play.api.Application$$anon$1: Execution exception[[RuntimeException: java.lang.NoSuchFieldError: Home]] at play.api.Application$class.handleError(Application.scala:289) ~[play_2.10.jar:2.1-RC2] at play.api.DefaultApplication.handleError(Application.scala:383) [play_2.10.jar:2.1-RC2] at play.core.server.netty.PlayDefaultUpstreamHandler$$anon$2$$anonfun$handle$1.apply(PlayDefaultUpstreamHandler.scala:114) [play_2.10.jar:2.1-RC2] at play.core.server.netty.PlayDefaultUpstreamHandler$$anon$2$$anonfun$handle$1.apply(PlayDefaultUpstreamHandler.scala:110) [play_2.10.jar:2.1-RC2] at play.api.libs.concurrent.PlayPromise$$anonfun$extend1$1.apply(Promise.scala:113) [play_2.10.jar:2.1-RC2] at play.api.libs.concurrent.PlayPromise$$anonfun$extend1$1.apply(Promise.scala:113) [play_2.10.jar:2.1-RC2] java.lang.RuntimeException: java.lang.NoSuchFieldError: Home at play.libs.F$Promise$6.apply(F.java:377) ~[play_2.10.jar:2.1-RC2] at scala.concurrent.Future$$anonfun$map$1.liftedTree2$1(Future.scala:253) ~[scala-library.jar:na] at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:249) ~[scala-library.jar:na] at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:249) ~[scala-library.jar:na] at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:29) ~[scala-library.jar:na] at akka.dispatch.BatchingExecutor$Batch$$anonfun$run$1.liftedTree1$1(BatchingExecutor.scala:67) ~[akka-actor_2.10.jar:na] Caused by: java.lang.NoSuchFieldError: Home at views.html.documents.homepage$.apply(homepage.template.scala:45) ~[na:na] at views.html.documents.homepage$.render(homepage.template.scala:51) ~[na:na] at views.html.documents.homepage.render(homepage.template.scala) ~[na:na] at controllers.Home.read(Home.java:24) ~[na:na] at controllers.Application.index(Application.java:24) ~[na:na] at Routes$$anonfun$routes$1$$anonfun$applyOrElse$17$$anonfun$apply$17.apply(routes_routing.scala:251) ~[na:na]
If anyone could tell me where these errors might come from or point me in the right direction, I would be very grateful! If you need more information, please let me know!