java.lang.ClassCastException: org.springframework.web.servlet.ModelAndView cannot be cast to java.lang.String

Spring JIRA | Stan Rosenberg | 4 years ago
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  1. 0

    In debug mode (log4j.category.org.springframework = DEBUG), spring is throwing an exception inside the generated toString method. The culprit may be the line: logger.debug("Mapping [" + lookupPath + "] to " + handler), in AbstractUrlHandlerMapping. Here is the full stack trace, java.lang.ClassCastException: org.springframework.web.servlet.ModelAndView cannot be cast to java.lang.String at com.appnexus.dmf.api.controllers.JobController$$EnhancerByCGLIB$$50e3af05.toString(<generated>) at java.lang.String.valueOf(String.java:2826) at java.lang.StringBuilder.append(StringBuilder.java:115) at org.springframework.web.servlet.HandlerExecutionChain.toString(HandlerExecutionChain.java:204) at java.lang.String.valueOf(String.java:2826) at java.lang.StringBuilder.append(StringBuilder.java:115) at org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.getHandlerInternal(AbstractUrlHandlerMapping.java:124) at org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.java:297) at org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1091) at org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1076) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:896) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:920) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:816) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:801) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:534) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:934) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:404) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:869) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:151) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) at org.eclipse.jetty.server.Server.handle(Server.java:346) at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:581) at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1040) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:592) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214) at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:526) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:41) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:680)

    Spring JIRA | 4 years ago | Stan Rosenberg
    java.lang.ClassCastException: org.springframework.web.servlet.ModelAndView cannot be cast to java.lang.String
  2. 0

    In debug mode (log4j.category.org.springframework = DEBUG), spring is throwing an exception inside the generated toString method. The culprit may be the line: logger.debug("Mapping [" + lookupPath + "] to " + handler), in AbstractUrlHandlerMapping. Here is the full stack trace, java.lang.ClassCastException: org.springframework.web.servlet.ModelAndView cannot be cast to java.lang.String at com.appnexus.dmf.api.controllers.JobController$$EnhancerByCGLIB$$50e3af05.toString(<generated>) at java.lang.String.valueOf(String.java:2826) at java.lang.StringBuilder.append(StringBuilder.java:115) at org.springframework.web.servlet.HandlerExecutionChain.toString(HandlerExecutionChain.java:204) at java.lang.String.valueOf(String.java:2826) at java.lang.StringBuilder.append(StringBuilder.java:115) at org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.getHandlerInternal(AbstractUrlHandlerMapping.java:124) at org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.java:297) at org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1091) at org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1076) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:896) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:920) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:816) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:801) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:534) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:934) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:404) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:869) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:151) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) at org.eclipse.jetty.server.Server.handle(Server.java:346) at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:581) at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1040) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:592) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214) at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:526) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:41) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:680)

    Spring JIRA | 4 years ago | Stan Rosenberg
    java.lang.ClassCastException: org.springframework.web.servlet.ModelAndView cannot be cast to java.lang.String

    Root Cause Analysis

    1. java.lang.ClassCastException

      org.springframework.web.servlet.ModelAndView cannot be cast to java.lang.String

      at com.appnexus.dmf.api.controllers.JobController$$EnhancerByCGLIB$$50e3af05.toString()
    2. com.appnexus.dmf
      JobController$$EnhancerByCGLIB$$50e3af05.toString
      1. com.appnexus.dmf.api.controllers.JobController$$EnhancerByCGLIB$$50e3af05.toString(<generated>)
      1 frame
    3. Java RT
      StringBuilder.append
      1. java.lang.String.valueOf(String.java:2826)
      2. java.lang.StringBuilder.append(StringBuilder.java:115)
      2 frames
    4. Spring MVC
      HandlerExecutionChain.toString
      1. org.springframework.web.servlet.HandlerExecutionChain.toString(HandlerExecutionChain.java:204)
      1 frame
    5. Java RT
      StringBuilder.append
      1. java.lang.String.valueOf(String.java:2826)
      2. java.lang.StringBuilder.append(StringBuilder.java:115)
      2 frames
    6. Spring MVC
      FrameworkServlet.doGet
      1. org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.getHandlerInternal(AbstractUrlHandlerMapping.java:124)
      2. org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.java:297)
      3. org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1091)
      4. org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1076)
      5. org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:896)
      6. org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
      7. org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:920)
      8. org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:816)
      8 frames
    7. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
      1 frame
    8. Spring MVC
      FrameworkServlet.service
      1. org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:801)
      1 frame
    9. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
      1 frame
    10. Jetty
      HttpConnection.handle
      1. org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:534)
      2. org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476)
      3. org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:934)
      4. org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:404)
      5. org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:869)
      6. org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
      7. org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:151)
      8. org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
      9. org.eclipse.jetty.server.Server.handle(Server.java:346)
      10. org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:581)
      11. org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1040)
      12. org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:592)
      13. org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214)
      14. org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411)
      14 frames
    11. GWT dev
      SelectChannelEndPoint$1.run
      1. org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:526)
      2. org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:41)
      2 frames
    12. Java RT
      Thread.run
      1. java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
      2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
      3. java.lang.Thread.run(Thread.java:680)
      3 frames