import java.io.IOException;

import java.sql.SQLException;

​

import javax.servlet.http.HttpServletRequest;

​

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.http.HttpStatus;

import org.springframework.web.bind.annotation.ControllerAdvice;

import org.springframework.web.bind.annotation.ExceptionHandler;

import org.springframework.web.bind.annotation.ResponseStatus;

​

@ControllerAdvice

public class GlobalExceptionHandler {

​

    private static final Logger logger = LoggerFactory.getLogger(GlobalExceptionHandler.class);

    @ExceptionHandler(SQLException.class)

    public String handleSQLException(HttpServletRequest request, Exception ex){

        logger.info("SQLException Occured:: URL="+request.getRequestURL());

        return "database_error";

    }

    @ResponseStatus(value=HttpStatus.NOT_FOUND, reason="IOException occured")

    @ExceptionHandler(IOException.class)

    public void handleIOException(){

        logger.error("IOException handler executed");

        //returning 404 error code

    }

}

@ControllerAdvice

public class RestResponseEntityExceptionHandler 

  extends ResponseEntityExceptionHandler {

​

    @ExceptionHandler(value 

      = { IllegalArgumentException.class, IllegalStateException.class })

    protected ResponseEntity<Object> handleConflict(

      RuntimeException ex, WebRequest request) {

        String bodyOfResponse = "This should be application specific";

        return handleExceptionInternal(ex, bodyOfResponse, 

          new HttpHeaders(), HttpStatus.CONFLICT, request);

    }

}

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