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Method 1: customize the error page

Everyone who knows about it knows that in the default exception handling mechanism in our springboot, springboot will send a request to the url of / error once there is an exception in the program we are running. And there is also a BasicExceptionController in springboot to handle / error requests, and then jump to the exception page that we display by default! Of course, we can also jump the error exception to our default custom error page, just create an error.html page in the src/main/resources/templates directory, and then add the following code:.

Method 2: @ ExceptionHandle annotation handles exceptions

For the use of this method, we just add the following method to controller, and the code is as follows:

@ ExceptionHandler (value= {java.lang.ArithmeticException.class}) public ModelAndView arithmeticExceptionHandler (Exception e) {ModelAndView mv = new ModelAndView (); mv.addObject ("error", e.toString ()); mv.setViewName ("error"); return mv;}

Method 3: @ ControllerAdvice+@ExceptionHandler annotation handles exceptions

So when using this method, we need to create a global exception class that can handle exceptions, and then after the creation is completed, we can add the @ ControllerAdvice annotation to this class. The code is as follows:

ControllerAdvicepublic class GlobalException {@ ExceptionHandler (value= {java.lang.ArithmeticException.class}) public ModelAndView arithmeticExceptionHandler (Exception e) {ModelAndView mv = new ModelAndView (); mv.addObject ("error", e.toString ()); mv.setViewName ("error"); return mv;}}

Method 4: configure SimpleMappingExceptionResolver to handle exceptions

This method is similar to the above method 3. When using this method, you need to add a method to the global exception to complete the unified handling of the exception class. Here is the related code:

@ Configurationpublic class GlobalException {public SimpleMappingExceptionResolver getSimpleMappingExceptionResolver () {SimpleMappingExceptionResolver resolver = new SimpleMappingExceptionResolver (); Properties properties = new Properties (); properties.put ("java.lang.ArithmeticException", "error"); resolver.setExceptionMappings (properties); return resolver;}}

Method 5: custom HandlerExceptionResolver class handles exceptions

Then this method needs to implement the HandlerExceptionResolver interface in our global exception class. Here is the relevant code:

@ Configurationpublic class GlobalException implements HandlerExceptionResolver {@ Override public ModelAndView resolverException (HttpServletRequest request, HttpServletResponse response, Object object, Exception exception) {ModelAndView mv = new ModelAndView (); if (exception instanceof ArithmeticException) {mv.setViewName ("error");} mv.addObject ("error", exception.toString ()); return mv }} the above is the content of this article on "what are the methods of exception handling in the java springboot framework?" I believe you all have a certain understanding. I hope the content shared by the editor will be helpful to you. If you want to know more about the relevant knowledge, please follow the industry information channel.

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