This feels like a classloader problem. Do you have multiple versions of the json-simple JAR on the classpath? (Including any copies of those classes in uber-JARs...)
On Mar 7, 2018 7:39 AM, "coopci" <bo.coo...@gmail.com> wrote: > As subject suggests, http://localhost:8161/api/jolokia/ and > http://localhost:8161/api/jolokia/read/org.apache.activemq:type=Broker, > brokerName=localhost > return a 500 page. > I’ve tried several POST requests found in > http://www.jakubkorab.net/2013/11/monitoring-activemq-via-http.html, also > got this 500 page. > > I’m using ActiveMQ 5.14.5. > JMS and JMX work well. > > Can I find any working example under domain name activemq.apache.org? > http://localhost:8161/api/jolokia/read/org.apache.activemq:type=Broker, > brokerName=localhost > is found here: http://activemq.apache.org/rest.html > > > HTTP ERROR 500 > Problem accessing /api/jolokia. Reason: > Server Error > > Caused by: > java.lang.IllegalAccessError: tried to access method > org.json.simple.JSONValue.escape(Ljava/lang/String; > Ljava/lang/StringBuffer;)V > from class org.json.simple.JSONObject > at org.json.simple.JSONObject.toJSONString(JSONObject.java:116) > at org.json.simple.JSONObject.toJSONString(JSONObject.java:101) > at org.json.simple.JSONObject.toJSONString(JSONObject.java:108) > at org.jolokia.http.AgentServlet.handle(AgentServlet.java:269) > at org.jolokia.http.AgentServlet.doGet(AgentServlet.java:221) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) > at org.eclipse.jetty.servlet.ServletHolder.handle( > ServletHolder.java:808) > at > org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:587) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle( > ScopedHandler.java:143) > at > org.eclipse.jetty.security.SecurityHandler.handle( > SecurityHandler.java:553) > at > org.eclipse.jetty.server.session.SessionHandler. > doHandle(SessionHandler.java:223) > at > org.eclipse.jetty.server.handler.ContextHandler. > doHandle(ContextHandler.java:1127) > at > org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) > at > org.eclipse.jetty.server.session.SessionHandler. > doScope(SessionHandler.java:185) > at > org.eclipse.jetty.server.handler.ContextHandler. > doScope(ContextHandler.java:1061) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle( > ScopedHandler.java:141) > at > org.eclipse.jetty.server.handler.HandlerCollection. > handle(HandlerCollection.java:110) > at > org.eclipse.jetty.security.SecurityHandler.handle( > SecurityHandler.java:553) > at > org.eclipse.jetty.server.handler.HandlerCollection. > handle(HandlerCollection.java:110) > at > org.eclipse.jetty.server.handler.HandlerWrapper.handle( > HandlerWrapper.java:97) > at org.eclipse.jetty.server.Server.handle(Server.java:499) > at org.eclipse.jetty.server.HttpChannel.handle( > HttpChannel.java:310) > at > org.eclipse.jetty.server.HttpConnection.onFillable( > HttpConnection.java:257) > at > org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540) > at > org.eclipse.jetty.util.thread.QueuedThreadPool.runJob( > QueuedThreadPool.java:635) > at > org.eclipse.jetty.util.thread.QueuedThreadPool$3.run( > QueuedThreadPool.java:555) > at java.lang.Thread.run(Thread.java:748) > > Powered by Jetty:// > > > > -- > Sent from: http://activemq.2283324.n4.nabble.com/ActiveMQ-User- > f2341805.html >
