Failed to instantiate [org.springframework.web.servlet.HandlerExceptionResolver];Ambiguous @ExceptionHandler method mapped

Question

My GlobalExceptionHandlerController class:

@ControllerAdvice
public class GlobalExceptionHandlerController {

    @ExceptionHandler
    @ResponseStatus(HttpStatus.NOT_FOUND)
    public String handleError404(HttpServletRequest request, Exception e) {
        return "404";
    }

    @ExceptionHandler
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public String handleError400(HttpServletRequest request, Exception e) {
        return "errors1";
    }

    @ExceptionHandler
    @ResponseStatus(HttpStatus.FORBIDDEN)
    public String handleError403(HttpServletRequest request, Exception e) {
        return "errors2";
    }

    @ExceptionHandler
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public String handleError500(HttpServletRequest request, Exception e) {
        return "errors3";
    }

    @ExceptionHandler
    @ResponseStatus(HttpStatus.TOO_MANY_REQUESTS)
    public String handleError429(HttpServletRequest request, Exception e) {
        return "errors4";
    }

}

I'm getting this error:

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.HandlerExceptionResolver]: Factory method 'handlerExceptionResolver' threw exception; nested exception is java.lang.IllegalStateException: Ambiguous @ExceptionHandler method mapped for [class java.lang.Exception]: {public java.lang.String com.fussa.fyby.configuration.GlobalExceptionHandlerController.handleError403(javax.servlet.http.HttpServletRequest,java.lang.Exception), public java.lang.String com.fussa.fyby.configuration.GlobalExceptionHandlerController.handleError400(javax.servlet.http.HttpServletRequest,java.lang.Exception)}
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
    ... 24 more
Caused by: java.lang.IllegalStateException: Ambiguous @ExceptionHandler method mapped for [class java.lang.Exception]: {public java.lang.String com.fussa.fyby.configuration.GlobalExceptionHandlerController.handleError403(javax.servlet.http.HttpServletRequest,java.lang.Exception), public java.lang.String com.fussa.fyby.configuration.GlobalExceptionHandlerController.handleError400(javax.servlet.http.HttpServletRequest,java.lang.Exception)}
    at org.springframework.web.method.annotation.ExceptionHandlerMethodResolver.addExceptionMapping(ExceptionHandlerMethodResolver.java:109)
    at org.springframework.web.method.annotation.ExceptionHandlerMethodResolver.<init>(ExceptionHandlerMethodResolver.java:76)
    at org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver.initExceptionHandlerAdviceCache(ExceptionHandlerExceptionResolver.java:265)
    at org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver.afterPropertiesSet(ExceptionHandlerExceptionResolver.java:241)
    at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.addDefaultHandlerExceptionResolvers(WebMvcConfigurationSupport.java:879)
    at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.handlerExceptionResolver(WebMvcConfigurationSupport.java:822)
    at org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerBySpringCGLIB$$400a1941.CGLIB$handlerExceptionResolver$41(<generated>)
    at org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerBySpringCGLIB$$400a1941$$FastClassBySpringCGLIB$$2aaff7a.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356)
    at org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerBySpringCGLIB$$400a1941.handlerExceptionResolver(<generated>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
    ... 25 more

Thanks for any advices..

mh-dev · Accepted Answer · 2016-10-22 14:36:07Z

1

Spring can not guess which handler method it should use for which exception. Since you don't define them.

Set the value for the ExceptionHandler annotation for each method appropriate and make sure there are no duplicates.

answered Oct 22, 2016 at 14:36

mh-dev

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Community · Accepted Answer · 2017-05-23 12:06:46Z

0

As mh-dev suggest, i defined exception for each ExceptionHandler annotation:

@ControllerAdvice
public class GlobalExceptionHandlerController {

    @ExceptionHandler
    @ResponseStatus(HttpStatus.NOT_FOUND)
    public String handleError404(HttpServletRequest request, Exception e) {
        return "404";
    }

    @ExceptionHandler({ HttpClientErrorException.class,Throwable.class  })
    @ResponseStatus
    public String handleError4xx(HttpServletRequest request, Exception e) {
        return "errors4";
    }

    @ExceptionHandler(HttpServerErrorException.class)
    @ResponseStatus
    public String handleError5xx(HttpServletRequest request, Exception e) {
        return "errors5";
    }

}

edited May 23, 2017 at 12:06

CommunityBot

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answered Oct 22, 2016 at 16:35

FuSsA

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