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InvocationTargetException 异常

TTP ERROR 500

Problem accessing /blog!add.do. Reason:

    java.lang.reflect.InvocationTargetException

Caused by:

org.blog.common.web.ObjectFactoryException: java.lang.reflect.InvocationTargetException
	at org.blog.common.web.ControllerFactory.executeMethod(ControllerFactory.java:72)
	at org.blog.common.web.ControllerFactory.control(ControllerFactory.java:23)
	at org.blog.common.web.ControlServlet.process(ControlServlet.java:45)
	at org.blog.common.web.ControlServlet.doGet(ControlServlet.java:25)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
	at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:58)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
	at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
	at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:122)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
	at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:70)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:349)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:326)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:100)
	at org.blog.common.web.ControllerFactory.executeMethod(ControllerFactory.java:66)
	... 30 more
Caused by: java.lang.IllegalStateException: The current user is not logged in.
	at com.google.appengine.api.users.UserServiceImpl.isUserAdmin(UserServiceImpl.java:96)
	at org.blog.common.web.Controller.checkAdmin(Controller.java:92)
	at org.blog.blog.web.BlogController.add(BlogController.java:23)
	... 36 more

Caused by:

java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:100)
	at org.blog.common.web.ControllerFactory.executeMethod(ControllerFactory.java:66)
	at org.blog.common.web.ControllerFactory.control(ControllerFactory.java:23)
	at org.blog.common.web.ControlServlet.process(ControlServlet.java:45)
	at org.blog.common.web.ControlServlet.doGet(ControlServlet.java:25)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
	at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:58)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
	at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
	at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:122)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
	at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:70)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:349)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:326)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.lang.IllegalStateException: The current user is not logged in.
	at com.google.appengine.api.users.UserServiceImpl.isUserAdmin(UserServiceImpl.java:96)
	at org.blog.common.web.Controller.checkAdmin(Controller.java:92)
	at org.blog.blog.web.BlogController.add(BlogController.java:23)
	... 36 more

Caused by:

java.lang.IllegalStateException: The current user is not logged in.
	at com.google.appengine.api.users.UserServiceImpl.isUserAdmin(UserServiceImpl.java:96)
	at org.blog.common.web.Controller.checkAdmin(Controller.java:92)
	at org.blog.blog.web.BlogController.add(BlogController.java:23)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:100)
	at org.blog.common.web.ControllerFactory.executeMethod(ControllerFactory.java:66)
	at org.blog.common.web.ControllerFactory.control(ControllerFactory.java:23)
	at org.blog.common.web.ControlServlet.process(ControlServlet.java:45)
	at org.blog.common.web.ControlServlet.doGet(ControlServlet.java:25)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
	at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:58)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
	at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
	at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:122)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
	at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:70)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:349)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:326)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

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戴威回答于 2011-01-05 21:02

	/**
	 * 执行方法
	 * @param obj
	 * @param methodName
	 * @throws RequestNotFoundException
	 * @throws ObjectFactoryException
	 */
	private static void executeMethod(Object obj, String methodName) throws 
			RequestNotFoundException, ObjectFactoryException {
		try {
			Method method = obj.getClass().getMethod(methodName);
			method.invoke(obj);
		} catch(NoSuchMethodException e) {
			throw new RequestNotFoundException(
					"无法找到方法：" + methodName, e);
		} catch(Exception e) {
			e.printStackTrace();
			throw new ObjectFactoryException(e);
		}
	}

执行method.invoke(obj);这句时报错

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戴威回答于 2011-01-05 21:04

    /**
     * Invokes the underlying method represented by this <code>Method</code> 
     * object, on the specified object with the specified parameters.
     * Individual parameters are automatically unwrapped to match
     * primitive formal parameters, and both primitive and reference
     * parameters are subject to method invocation conversions as
     * necessary.
     *
     * <p>If the underlying method is static, then the specified <code>obj</code> 
     * argument is ignored. It may be null.
     *
     * <p>If the number of formal parameters required by the underlying method is
     * 0, the supplied <code>args</code> array may be of length 0 or null.
     *
     * <p>If the underlying method is an instance method, it is invoked
     * using dynamic method lookup as documented in The Java Language
     * Specification, Second Edition, section 15.12.4.4; in particular,
     * overriding based on the runtime type of the target object will occur.
     *
     * <p>If the underlying method is static, the class that declared
     * the method is initialized if it has not already been initialized.
     *
     * <p>If the method completes normally, the value it returns is
     * returned to the caller of invoke; if the value has a primitive
     * type, it is first appropriately wrapped in an object. However,
     * if the value has the type of an array of a primitive type, the
     * elements of the array are <i>not</i> wrapped in objects; in
     * other words, an array of primitive type is returned.  If the
     * underlying method return type is void, the invocation returns
     * null.
     *
     * @param obj  the object the underlying method is invoked from
     * @param args the arguments used for the method call
     * @return the result of dispatching the method represented by
     * this object on <code>obj</code> with parameters
     * <code>args</code>
     *
     * @exception IllegalAccessException    if this <code>Method</code> object
     *              enforces Java language access control and the underlying
     *              method is inaccessible.
     * @exception IllegalArgumentException  if the method is an
     *              instance method and the specified object argument
     *              is not an instance of the class or interface
     *              declaring the underlying method (or of a subclass
     *              or implementor thereof); if the number of actual
     *              and formal parameters differ; if an unwrapping
     *              conversion for primitive arguments fails; or if,
     *              after possible unwrapping, a parameter value
     *              cannot be converted to the corresponding formal
     *              parameter type by a method invocation conversion.
     * @exception InvocationTargetException if the underlying method
     *              throws an exception.
     * @exception NullPointerException      if the specified object is null
     *              and the method is an instance method.
     * @exception ExceptionInInitializerError if the initialization
     * provoked by this method fails.
     */
    public Object invoke(Object obj, Object... args)
	throws IllegalAccessException, IllegalArgumentException,
           InvocationTargetException
    {
        if (!override) {
            if (!Reflection.quickCheckMemberAccess(clazz, modifiers)) {
                Class caller = Reflection.getCallerClass(1);
                Class targetClass = ((obj == null || !Modifier.isProtected(modifiers))
                                     ? clazz
                                     : obj.getClass());

		boolean cached;
		synchronized (this) {
		    cached = (securityCheckCache == caller)
			    && (securityCheckTargetClassCache == targetClass);
		}
		if (!cached) {
		    Reflection.ensureMemberAccess(caller, clazz, obj, modifiers);
		    synchronized (this) {
			securityCheckCache = caller;
			securityCheckTargetClassCache = targetClass;
		    }
		}
            }
        }
        if (methodAccessor == null) acquireMethodAccessor();
        return methodAccessor.invoke(obj, args);
    }

最深只能追踪到这句 return methodAccessor.invoke(obj, args);报错

在深入下去就是native的类了

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戴威回答于 2011-01-05 21:06

举报

平台是google app engine project

这个是我写的一个对象工厂

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红薯回答于 2011-01-05 21:07

举报

请看 http://www.oschina.net/code/snippet_12_1 这个类的第 103 行

捕捉到这个异常后要调用 .getCause() 方法才能获取真实的异常信息。

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戴威回答于 2011-01-05 21:13

举报

引用来自#5楼“红薯”的帖子

请看 http://www.oschina.net/code/snippet_12_1 这个类的第 103 行

捕捉到这个异常后要调用 .getCause() 方法才能获取真实的异常信息。

感谢红薯老大，原来是实反射的那个方法报错了。

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戴威回答于 2011-01-05 21:15

	/**
	 * 执行方法
	 * @param obj
	 * @param methodName
	 * @throws RequestNotFoundException
	 * @throws ObjectFactoryException
	 */
	private static void executeMethod(Object obj, String methodName) throws 
			RequestNotFoundException, ObjectFactoryException {
		try {
			Method method = obj.getClass().getMethod(methodName);
			method.invoke(obj);
		} catch(NoSuchMethodException e) {
			throw new RequestNotFoundException(
					"无法找到方法：" + methodName, e);
		} catch(InvocationTargetException e) {
			Throwable t = e.getCause();
			t.printStackTrace();
			throw new ObjectFactoryException(t);
		} catch(Exception e) {
			e.printStackTrace();
			throw new ObjectFactoryException(e);
		}
	}

改造之后的代码，再次感谢红薯老大的帮助

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programtic 回答于 2011-01-06 08:50

举报

百度已经收录了oschina的这个异常InvocationTargetException ，速度真快。

转自：http://www.oschina.net/question/86510_14830

查看全文

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原文地址：https://www.cnblogs.com/ningxu/p/3391965.html

InvocationTargetException 异常

TTP ERROR 500

Caused by:

Caused by:

Caused by:

引用来自#5楼“红薯”的帖子