se.skltp.cooperation.web.rest.exception.DefaultExceptionHandler.java Source code

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Here is the source code for se.skltp.cooperation.web.rest.exception.DefaultExceptionHandler.java

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/**
 * Copyright (c) 2014 Center for eHalsa i samverkan (CeHis).
 *                         <http://cehis.se/>
 *
 * This file is part of SKLTP.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
package se.skltp.cooperation.web.rest.exception;

import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.TypeMismatchException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.http.HttpStatus;
import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;

@ControllerAdvice
public class DefaultExceptionHandler {

    private static final Logger log = LoggerFactory.getLogger(DefaultExceptionHandler.class);

    @ExceptionHandler
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public void handle(HttpMessageNotReadableException e) {
        log.warn("Returning HTTP 400 Bad Request", e);
    }

    @ExceptionHandler(TypeMismatchException.class)
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public @ResponseBody ProblemDetail handleTypeMismatch(HttpServletRequest request, TypeMismatchException e)
            throws Exception {
        ProblemDetail error = new ProblemDetail();
        buildErrorMessage(request, e, HttpStatus.BAD_REQUEST, error);
        error.setDetail("Argument with the value " + e.getValue() + " is not valid");

        return error;

    }

    @ExceptionHandler(ResourceNotFoundException.class)
    @ResponseStatus(HttpStatus.NOT_FOUND)
    @ResponseBody
    public ProblemDetail handleResourceNotFound(HttpServletRequest request, ResourceNotFoundException e) {
        ProblemDetail error = new ProblemDetail();
        buildErrorMessage(request, e, HttpStatus.NOT_FOUND, error);

        return error;
    }

    @ExceptionHandler(Exception.class)
    public void handleException(Exception e) throws Exception {
        log.error("An error was caught by the exception handler.", e);
        throw e;
    }

    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    @ResponseBody
    public ProblemDetail processValidationError(HttpServletRequest request, MethodArgumentNotValidException e) {
        log.debug("Handling form validation error");

        ValidationError error = new ValidationError();
        buildErrorMessage(request, e, HttpStatus.BAD_REQUEST, error);

        BindingResult result = e.getBindingResult();
        List<FieldError> fieldErrors = result.getFieldErrors();

        for (FieldError fieldError : fieldErrors) {
            log.debug("Adding error message: {} to field: {}", fieldError.getDefaultMessage(),
                    fieldError.getField());
            error.addFieldError(fieldError.getField(), fieldError.getCode(), fieldError.getDefaultMessage());
        }

        return error;
    }

    private void buildErrorMessage(HttpServletRequest request, Exception e, HttpStatus status,
            ProblemDetail error) {
        try {
            error.setType(new URI("http://httpstatus.es/" + status.value()));
        } catch (URISyntaxException e1) {
            log.error("Unable to set error type", e);
        }
        error.setTitle(status.getReasonPhrase());
        error.setStatus(status.value());
        error.setDetail(e.getMessage());
        String url = request.getRequestURL().toString();
        if (request.getQueryString() != null) {
            url = url + "?" + request.getQueryString();
        }
        error.setInstance(url);
    }
}