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SpringBoot (Rest (Exception Handling for Rest Controller Link Reference…

- - - - Only works at the Controller level
      - How
        
        Define a method to handle exceptions and
        annotate with ExceptionHandler
        
        ExceptionHandler({MyException1.class, MyException2.class})
        pulbic void handleMyException(){}
      - Drawback
        
        ExceptionHandler only active for this Controller, not globally
        
        Solve by
        
        Make a Base Controller Class and handle
        Exception inside
        
        All Controller will extends BaseController Class
        
        If somehow we cannot make Base Controller -> fail
    - - Start Spring 3.2
      - Support a global ExceptionHandler
      - How
        
        ControllerAdvice
        pulblic class RestResExHandler extends
        ResponseEntityExceptionHandler{
        
        Write ExceptionHandler inside above Class
    - - Start Spring 5
      - throw new ResponseStatusException
        in Controller
      - Pros
        
        Basic solution
        
        One type, multiple status code
        
        No need create many custome exception class
        
        More control over exception handling
      - Cons
        
        There's no unified way of exception handling , as opposed to ControllerAdvice which provides a global approach
        
        Cause code duplication
    - - Provide ErrorController implementation to handle errors
        
        "timestamp": "2020-02-06T07:58:40.707+0000",
        "status": 411,
        "error": "Length Required",
        "message": "password must have more than 3 characters",
        "path": "/users"
      - We can customize the attributes that we want to show in the response
        
        Including an ErrorAttributes bean in the context
        
        extends DefaultErrorAttributes class