我正在使用PlayN来开发游戏。它包含GameEvent
项目中定义的类型my-game-core
。我的GWT和GAE代码位于my-game-html
,其my-game-core
作为Maven依赖。
这是服务impl:
package com.mygame.html.server;
import com.mygame.core.event.GameEvent;
import com.mygame.html.client.ServerEventHandlerService;
import com.google.gwt.user.server.rpc.RemoteServiceServlet;
@SuppressWarnings("serial")
public class ServerEventHandlerServiceImpl extends RemoteServiceServlet
implements ServerEventHandlerService {
@Override
public String handleEvent(final GameEvent event) {
return "holy porkchops batman!";
}
}
这个编译得很好。但是,当我尝试在本地开发服务器上运行时调用服务时,我收到以下错误:
SEVERE: javax.servlet.ServletContext log: Exception while dispatching incoming RPC call
java.lang.NoClassDefFoundError: com/mygame/core/event/GameEvent
...
Caused by: java.lang.ClassNotFoundException: com.mygame.core.event.GameEvent
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java:176)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 39 more
如果我取出GameEvent
并将其替换为类似String
的类型,那么一切正常。
我在这里做错了什么? GameEvent
有一个默认构造函数。
更新:这是* -html项目的pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>mygame-game</artifactId>
<groupId>com.mygame</groupId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>..</relativePath>
</parent>
<artifactId>mygame-game-html</artifactId>
<packaging>war</packaging>
<name>my game html build</name>
<properties>
<gwt.module>com.mygame.MygameGame</gwt.module>
<gwt.name>mygame</gwt.name>
</properties>
<dependencies>
<dependency>
<groupId>com.mygame</groupId>
<artifactId>mygame-game-core</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>com.googlecode.playn</groupId>
<artifactId>playn-html</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>src</sourceDirectory>
<outputDirectory>war/WEB-INF/classes</outputDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.1.1</version>
<configuration>
<warSourceDirectory>war</warSourceDirectory>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>gwt-maven-plugin</artifactId>
<!-- we need class metadata, override PlayN's disabling of such -->
<configuration>
<disableClassMetadata>false</disableClassMetadata>
</configuration>
</plugin>
<plugin>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.8</version>
<configuration>
<downloadSources>true</downloadSources>
<downloadJavadocs>false</downloadJavadocs>
<wtpversion>2.0</wtpversion>
<additionalBuildcommands>
<buildCommand>
<name>com.google.gwt.eclipse.core.gwtProjectValidator</name>
</buildCommand>
</additionalBuildcommands>
<additionalProjectnatures>
<projectnature>com.google.gwt.eclipse.core.gwtNature</projectnature>
</additionalProjectnatures>
</configuration>
</plugin>
</plugins>
</build>
</project>
更新2 :在war/WEB-INF/lib
中,我有:
答案 0 :(得分:2)
你在gwt启动的jetty的运行时类路径中缺少你的依赖my-game-core。
您是否使用mvn eclipse导入项目:eclipse进入eclipse? 也许您的运行时类路径仍然指向您的本地maven仓库,但您已经更改了您的eclipse项目(my-game-core)。看一下你的eclipse类路径,确保它只有其他项目,而不是repo中的jar。
同时检查运行配置中的classpath选项卡。