Java 包含多个JAR的RMI
我正在编写一个带有3个JAR的RMI程序:Java 包含多个JAR的RMI,java,jar,rmi,codebase,Java,Jar,Rmi,Codebase,我正在编写一个带有3个JAR的RMI程序: RMIServer,包含服务器端类 RMIClient包含客户端类 RMIResource包含服务器和客户端共享内容(接口、自定义异常) 为了创建单独的JAR文件,我在NetBeans中创建了3个项目,然后在其他2个项目的“Libraries/Build”部分声明了共享JAR 一切都很好,没有错误 但是,当我试图通过命令行启动服务器时,在我想到将共享文件放在一个不同的JAR中之前,这很简单,这突然让a** 以下是我尝试过的几个命令示例: 保持类路
- RMIServer,包含服务器端类
- RMIClient包含客户端类
- RMIResource包含服务器和客户端共享内容(接口、自定义异常)
- 保持类路径指向服务器资源,但使用双代码基
java -cp ~/NetBeansProjects/RMIServer/dist/RMIServer.jar -Djava.rmi.server.codebase="file:/home/myuser/netbeansprojects/rmiserver/dist/rmiserver.jar file:/home/myuser/netbeansprojects/rmiserver/dist/lib/rmiresource.jar" rmiserver.Shop
java -cp "~/NetBeansProjects/RMIServer/dist/RMIServer.jar;~/NetBeansProjects/RMIServer/dist/lib/RMIResource.jar" -Djava.rmi.server.codebase="file:/home/myuser/netbeansprojects/rmiserver/dist/rmiserver.jar file:/home/myuser/netbeansprojects/rmiserver/dist/lib/rmiresource.jar" rmiserver.Shop
Network exception: java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: rmiresource.BookingManager
...
Exception in thread "main" java.lang.NoClassDefFoundError: rmiserver/Shop
Caused by: java.lang.ClassNotFoundException: rmiserver.Shop
...
Exception in thread "main" java.lang.NoClassDefFoundError: rmiserver/Shop
Caused by: java.lang.ClassNotFoundException: rmiserver.Shop
...
- 使用双类路径,但保持代码库指向服务器资源
java -cp "~/NetBeansProjects/RMIServer/dist/RMIServer.jar;~/NetBeansProjects/RMIServer/dist/lib/RMIResource.jar" -Djava.rmi.server.codebase=file:/home/myuser/netbeansprojects/rmiserver/dist/rmiserver.jar rmiserver.Shop
Network exception: java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: rmiresource.BookingManager
...
Exception in thread "main" java.lang.NoClassDefFoundError: rmiserver/Shop
Caused by: java.lang.ClassNotFoundException: rmiserver.Shop
...
Exception in thread "main" java.lang.NoClassDefFoundError: rmiserver/Shop
Caused by: java.lang.ClassNotFoundException: rmiserver.Shop
...
- 使用双类路径和双代码库
java -cp ~/NetBeansProjects/RMIServer/dist/RMIServer.jar -Djava.rmi.server.codebase="file:/home/myuser/netbeansprojects/rmiserver/dist/rmiserver.jar file:/home/myuser/netbeansprojects/rmiserver/dist/lib/rmiresource.jar" rmiserver.Shop
java -cp "~/NetBeansProjects/RMIServer/dist/RMIServer.jar;~/NetBeansProjects/RMIServer/dist/lib/RMIResource.jar" -Djava.rmi.server.codebase="file:/home/myuser/netbeansprojects/rmiserver/dist/rmiserver.jar file:/home/myuser/netbeansprojects/rmiserver/dist/lib/rmiresource.jar" rmiserver.Shop
Network exception: java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: rmiresource.BookingManager
...
Exception in thread "main" java.lang.NoClassDefFoundError: rmiserver/Shop
Caused by: java.lang.ClassNotFoundException: rmiserver.Shop
...
Exception in thread "main" java.lang.NoClassDefFoundError: rmiserver/Shop
Caused by: java.lang.ClassNotFoundException: rmiserver.Shop
...
编辑:
我在本地计算机上工作,模拟远程连接。因此,我使用“文件”协议,而不是“http”
我错过什么了吗?谢谢你提供的任何帮助
我再次测试了我的第一个解决方案,因为它是最有前途的:
java -cp ~/NetBeansProjects/RMIServer/dist/RMIServer.jar -Djava.rmi.server.codebase="file:/home/myuser/netbeansprojects/rmiserver/dist/rmiserver.jar file:/home/myuser/netbeansprojects/rmiserver/dist/lib/rmiresource.jar" rmiserver.Shop
它仍然失败了
然后我在Windows上进行了测试:
有人能给我解释一下吗?我在Linux上使用JDK 6,在Windows上使用JDK 7:这会有影响吗?一个文件:代码库无法在本地计算机上运行。您需要使用HTTP。您可能会使用指向共享目录的file:URL,这样URL在客户端就有意义了,但在LAN之外就不起作用了
除非您使用的是代码库特性,否则RMI注册表需要通过其类路径访问共享类:rmiregistry-J-Dclasspath=。。。使用LocateRegistry.createRegistry()更简单,因为它与远程对象位于同一个JVM中,并且使用相同的类路径。我在本地计算机上工作时忽略了expalin,因此RMI只是模拟远程连接。我将尝试更改注册表类路径。