Java tutorial
/* * Copyright (C) 2015 muhamadto * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.coffeebeans.services.controller.base; import com.coffeebeans.services.api.error.ErrorResponse; import com.coffeebeans.services.exception.general.DuplicateEntryException; import com.coffeebeans.services.exception.general.NotFoundException; import com.coffeebeans.services.exception.validation.ValidationException; import org.springframework.http.HttpStatus; import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.ResponseStatus; import org.springframework.web.servlet.support.ServletUriComponentsBuilder; import java.net.URI; /** * Created by muhamadto on 4/07/2015. */ public abstract class BaseController { @ResponseBody @ExceptionHandler(DuplicateEntryException.class) @ResponseStatus(value = HttpStatus.CONFLICT) ErrorResponse handleException(DuplicateEntryException e) { return new ErrorResponse(HttpStatus.CONFLICT.toString(), e.getMessage(), "Duplicated User"); } @ResponseBody @ExceptionHandler(ValidationException.class) @ResponseStatus(value = HttpStatus.BAD_REQUEST) ErrorResponse handleException(ValidationException e) { return new ErrorResponse(HttpStatus.BAD_REQUEST.toString(), e.getMessage(), "Bad Request", e.getValidationErrors()); } @ResponseBody @ExceptionHandler(NotFoundException.class) @ResponseStatus(value = HttpStatus.NOT_FOUND) ErrorResponse handleException(NotFoundException e) { return new ErrorResponse(HttpStatus.NOT_FOUND.toString(), e.getMessage(), "NOT FOUND (aka Huh?)"); } @ExceptionHandler(Exception.class) @ResponseStatus(value = HttpStatus.INTERNAL_SERVER_ERROR) ErrorResponse handleException(Exception e) { return new ErrorResponse(HttpStatus.INTERNAL_SERVER_ERROR.toString(), e.getMessage(), "Internal Error", null); } protected URI buildLocationFromCurrentRequestUri(String username) { URI location = ServletUriComponentsBuilder.fromCurrentRequestUri().path("/").path(username).build().toUri(); return location; } protected URI buildLocationFromCurrentServletMapping(String mapping, String username) { URI location = ServletUriComponentsBuilder.fromCurrentServletMapping().path("/").path(mapping).path("/") .path(username).build().toUri(); return location; } }