classloader

问题 I have a class which runs an Equinox framework. Now I would like to get an Object (defined in one of the bundles) that is returned by a service out of the framework. Unfortunately, I get a LinkageError and have no idea how to get rid of it. Is it even possible to let a service return a proper object to non-bundle code? Here is the full story: ParserDTOBundle is a bundle that defines the class ParserDTO and exports the corresponding package. In another bundle, ParserServiceBundle, I define a

问题 I want to write an application that when deployed on a server discovers some classes on that server and their methods and exposé a list of it to a client (via web service, servlet or RMI). the client can then choose a method and activate it (with reflection). Problem is that my application is not in the same context of the other applications on the server so I can't activate their methods (I don't have access to their classloader). I have a few ideas but not sure if they are feasible: Create

问题 I'm using Matlab MCR in web project so I imported these dependecies to pom.xml <!-- Matlab client tool library --> <!-- <dependency> <groupId>DataConcatenation</groupId> <artifactId>DataConcatenation</artifactId> <version>0.0.5-SNAPSHOT</version> </dependency> --> <!-- <dependency> <groupId>DataConcatenator</groupId> <artifactId>DataConcatenator</artifactId> <version>0.0.5-SNAPSHOT</version> </dependency> --> <!-- <dependency> <groupId>DataConversion</groupId> <artifactId>DataConversion<

问题 Exception stacks. Exception in thread "main" java.lang.ClassCircularityError: plugins/agents/Agent at java.lang.Class.getDeclaringClass(Native Method) at java.lang.Class.getEnclosingClass(Class.java:1085) at java.lang.Class.getCanonicalName(Class.java:1169) at agents.loader.AgentLoader.getPluginAgentFromCache(AgentLoader.java:288) at compiler.AgentCompiler.main(AgentCompiler.java:365) Below is the code which cause the error. It's very strange if I change the getCanonicalName to getName then

问题 Exception stacks. Exception in thread "main" java.lang.ClassCircularityError: plugins/agents/Agent at java.lang.Class.getDeclaringClass(Native Method) at java.lang.Class.getEnclosingClass(Class.java:1085) at java.lang.Class.getCanonicalName(Class.java:1169) at agents.loader.AgentLoader.getPluginAgentFromCache(AgentLoader.java:288) at compiler.AgentCompiler.main(AgentCompiler.java:365) Below is the code which cause the error. It's very strange if I change the getCanonicalName to getName then

问题 I'd like to know if the default behavior of JBoss server (4.2.3.GA in my case) is loading the classes in parent-first or parent-last mode. And in case it work as I suspect in parent-last mode (i.e. first trying to load classes from the application's WEB-INF/lib and only if they are not found go to server\lib), how can I configure it to work in the opposite- first trying to load classes from outside and only looking inside the application afterwards. 回答1: It sounds like you need to set

问题 I've an EAR application deployed on Weblogic 12.2 using Spring 4.0.4 and facing a strange behaviour: Spring can´t find the base package due to Weblogic's classloader which return an empty Enumeration for Spring's code: cl.getResources("my/base/pkg") It's under a context which injects some @Autowired beans on my MDB. (so, due to it, the beans aren´t injected) but if I put the below code into a sample MDB into the same application, it works: Thread.currentThread().getContextClassLoader()

问题 Hi is there a way to copy one class loaded context (atrributes etc) from one classloader (for instance a 'made' class Point) to another classloader? Making clear, Example: I have an object Point on CL 1. Now running on another CL2, I want to creat this object in CL 3. Some obj: class Point { int x; int y; public Point() {} //getters and setters Scenery: ... class CL2 { // Running on CL 2 ... // Point obj from CL 1 Object point = gotFromCL1(); // Want to create the object on Cl2 Object

问题 One and only one of my hundreds of users has trouble starting my Java desktop app. It only starts for him about one-third of the time. The other two-thirds of the time a NullPointerException is thrown at startup: Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at java.util.Hashtable.put(Hashtable.java:394) at javax.swing.JEditorPane.registerEditorKitForContentType(JEditorPane.java:1327) at javax.swing.JEditorPane.registerEditorKitForContentType(JEditorPane.java:1309) at

问题 In my java application, I read a jar file (packaged with Maven shade plugin) into a bytestream. In the jar there is a entrypoint class defined in POM.xml <build> ... <plugins> ... <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <configuration> <archive> <manifest> <mainClass>com.mycompany.TheEntryPoint</mainClass> </manifest> </archive> </configuration> </plugin> </plugins> </build> How do I load such class into my java app dynamically? Update: