2

我想知道是否可以让 ExceptionMapper 处理 Exception 的子类而不仅仅是 RuntimeException 的子类？

以下面的代码为例。如果 ExampleException 扩展 RuntimeException 则测试通过且没有错误。但是，如果 ExampleException 扩展了 Exception 则测试会引发错误。请参阅下面的错误输出。

以下是四个类：

  1. 示例异常
  2. 示例异常映射器
  3. 示例休息
  4. 示例RestTest

这是代码：

public class ExampleException extends Exception {
    public ExampleException(String message) {
    super(message);
    }
}

@Provider
public class ExampleExceptionMapper implements ExceptionMapper<ExampleException> {
    @Override
    public Response toResponse(ExampleException ex) {
        return Response.ok("Exception!").build();
    }
}

@Path("/example")
public class ExampleRest {

    @GET
    @Path(value = "/throw")
    public String throwException() throws ExampleException {
        throw new ExampleException("exception");
    }
}

@EnableServices(value = "jaxrs")
@RunWith(ApplicationComposer.class)
public class ExampleRestTest {

    @Module
    public EjbModule module() {
        EjbJar ejbJar = new EjbJar("beans");
        ejbJar.addEnterpriseBean(new SingletonBean(ExampleRest.class));

        final OpenejbJar openejbJar = new OpenejbJar();
        openejbJar.addEjbDeployment(new EjbDeployment(ejbJar.getEnterpriseBeans()[0]));

        final Properties properties = openejbJar.getEjbDeployment().iterator().next().getProperties();
        properties.setProperty("cxf.jaxrs.providers", ExampleExceptionMapper.class.getName());

        final EjbModule module = new EjbModule(ejbJar);
        module.setOpenejbJar(openejbJar);

        return module;
   }

    @Test
    public void testThrowException() {
        try {
            assertEquals("Exception!", IO.slurp(new URL("http://localhost:4204/ExampleRestTest/example/throw/")));
        } catch (Exception e) {
            e.printStackTrace();
            fail();
        }
    }
}

错误堆栈跟踪：

org.apache.cxf.interceptor.Fault: example.ExampleException: exception: exception while invoking public java.lang.String example.ExampleRest.throwException() throws example.ExampleException with params [].
at org.apache.cxf.service.invoker.AbstractInvoker.createFault(AbstractInvoker.java:166)
at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:140)
at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:167)
at org.apache.openejb.server.cxf.rs.OpenEJBEJBInvoker.invoke(OpenEJBEJBInvoker.java:47)
at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:94)
at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:58)
at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:94)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:262)
at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:236)
at org.apache.openejb.server.cxf.rs.CxfRsHttpListener.onMessage(CxfRsHttpListener.java:79)
at org.apache.openejb.server.httpd.OpenEJBHttpRegistry$ClassLoaderHttpListener.onMessage(OpenEJBHttpRegistry.java:99)
at org.apache.openejb.server.httpd.HttpListenerRegistry.onMessage(HttpListenerRegistry.java:69)
at org.apache.openejb.server.httpd.OpenEJBHttpServer.process(OpenEJBHttpServer.java:246)
at org.apache.openejb.server.httpd.OpenEJBHttpServer.processRequest(OpenEJBHttpServer.java:188)
at org.apache.openejb.server.httpd.OpenEJBHttpServer.service(OpenEJBHttpServer.java:103)
at org.apache.openejb.server.httpd.HttpEjbServer.service(HttpEjbServer.java:63)
at org.apache.openejb.server.ServerServiceFilter.service(ServerServiceFilter.java:64)
at org.apache.openejb.server.ServerServiceFilter.service(ServerServiceFilter.java:64)
at org.apache.openejb.server.ServiceStats.service(ServiceStats.java:54)
at org.apache.openejb.server.ServerServiceFilter.service(ServerServiceFilter.java:64)
at org.apache.openejb.server.ServiceLogger.service(ServiceLogger.java:92)
at org.apache.openejb.server.ServerServiceFilter.service(ServerServiceFilter.java:64)
at org.apache.openejb.server.ServicePool.access$201(ServicePool.java:35)
at org.apache.openejb.server.ServicePool$3.run(ServicePool.java:174)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
4

2 回答 2

1

这是固定在主干上（https://issues.apache.org/jira/browse/TOMEE-918）

您可以使用 ExceptionMapper 和 ex.getCause() 解决它

于 2013-04-27T20:42:47.600 回答
1

这太弱了

这是一种解决方法：

import org.apache.openejb.ApplicationException;

/**
 * @FIXME hack for https://issues.apache.org/jira/browse/TOMEE-918
 */
@Provider
public class MyExceptionMapper implements ExceptionMapper<ApplicationException> {  

    @Override 
    public Response toResponse(ApplicationException exception) {
        final Status status;
        final Throwable cause = exception.getCause();

        if (cause instanceof javax.ejb.EJBAccessException)
            status = Status.FORBIDDEN;
         else if (cause instanceof MyException) 
            status = Status.BAD_REQUEST;
         else
            status = Status.INTERNAL_SERVER_ERROR;

        return Response.status(status).entity(cause.getMessage()).build();
    }
}
于 2013-06-26T15:36:20.117 回答