eu.agilejava.mvc.HelloController.java Source code

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Here is the source code for eu.agilejava.mvc.HelloController.java

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/*
 * The MIT License
 *
 * Copyright 2015 Ivar Grimstad (ivar.grimstad@gmail.com).
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package eu.agilejava.mvc;

import java.util.HashMap;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.validation.ObjectError;
import org.springframework.validation.Validator;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import static org.springframework.web.bind.annotation.RequestMethod.POST;
import org.springframework.web.servlet.ModelAndView;

/**
 * Simple Hello controller for Spring MVC.
 *
 * @author Ivar Grimstad (ivar.grimstad@gmail.com)
 */
@Controller
public class HelloController {

    @Autowired
    private Validator validator;

    @RequestMapping(value = "hello")
    public ModelAndView helloWorld() {

        Map<String, Object> helloModel = new HashMap<>();

        ModelAndView mv = new ModelAndView("form", helloModel);

        return mv;
    }

    @RequestMapping(value = "hello", method = POST)
    public ModelAndView formPost(@ModelAttribute("form") @Validated HelloBean form, BindingResult bindingResult) {

        if (bindingResult.hasErrors()) {

            Map<String, Object> errorModel = new HashMap<>();
            ObjectError error = bindingResult.getAllErrors().iterator().next();
            errorModel.put("property", ((FieldError) error).getField());
            errorModel.put("value", ((FieldError) error).getRejectedValue());
            errorModel.put("message", error.getDefaultMessage());

            bindingResult.getAllErrors().stream().forEach(v -> {
                errorModel.put(((FieldError) v).getField(), v.getDefaultMessage());
            });

            ModelAndView mv = new ModelAndView("form", errorModel);

            return mv;
        }

        Map<String, Object> helloModel = new HashMap<>();
        helloModel.put("name", form.getFirstName() + " " + form.getLastName());

        ModelAndView mv = new ModelAndView("hello", helloModel);

        return mv;
    }
}