How do validation with thymeleaf and bean validation? - spring

Question

I'm trying to perform a simple validation in my view, I know that the jsf it is very simple to do more in the spring mvc is giving me a headache ...
Can anyone help me with this validation? see what I'm doing wrong ??
my model
package br.com.nextinfo.multimedia.web.model;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToOne;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import javax.validation.constraints.NotNull;
import org.hibernate.validator.constraints.NotBlank;
#Table
#Entity(name="slideshow")
public class SlideShow {
private Long condigo;
private String titulo;
private String subTitulo;
private ImagemSlider imagemSlider;
#Id
#GeneratedValue(generator="codigo",strategy=GenerationType.AUTO)
#SequenceGenerator(name = "codigo", sequenceName = "codigo_slideshow")
#Column(name = "CODIGO")
public Long getCondigo() {
return condigo;
}
#NotNull
#NotBlank
#Column(name = "TITULO" ,nullable = false)
public String getTitulo() {
return titulo;
}
#OneToOne(cascade = CascadeType.ALL)
#JoinColumn(name ="CODIGO_IMAGEM")
public ImagemSlider getImagemSlider() {
return imagemSlider;
}
#NotNull
#NotBlank
#Column(name = "SUBTITULO" ,nullable = false)
public String getSubTitulo() {
return subTitulo;
}
public void setTitulo(String titulo) {
this.titulo = titulo;
}
public void setSubTitulo(String subTitulo) {
this.subTitulo = subTitulo;
}
public void setImagemSlider(ImagemSlider imagemSlider) {
this.imagemSlider = imagemSlider;
}
public void setCondigo(Long condigo) {
this.condigo = condigo;
}
}
my controller
package br.com.nextinfo.multimedia.web.controller;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;
import br.com.nextinfo.multimedia.web.model.ImagemSlider;
import br.com.nextinfo.multimedia.web.model.SlideShow;
import br.com.nextinfo.multimedia.web.services.AbstractFactoryService;
import br.com.nextinfo.multimedia.web.services.CreateSlideShowService;
import br.com.nextinfo.multimedia.web.services.ImagemServiceDatabase;
#Controller
#RequestMapping("/arquivosbanco/")
public class FilesDatabaseController implements AbstractControllerApp ,PadraoCrudMetodos<ImagemSlider> {
#Autowired
private ImagemServiceDatabase imagemService;
#Autowired
private CreateSlideShowService slideShowService;
#Override
public String getRequisicaoPadrao(Model model) {
List<ImagemSlider> lista = this.getAbstractService().realizaPaginacao("0", "10" ,null).getContent();
model.addAttribute("listaObjetoPageStart", lista);
model.addAttribute("img", new ImagemSlider());
return this.getUrlInicial();
}
#Override
public String getUrlInicial() {
return "arquivos/database/listarquivosbancodedados";
}
#ResponseBody
#RequestMapping(value = "/img", method = RequestMethod.GET)
public void showImage(#RequestParam("id") Long id, HttpServletResponse response,HttpServletRequest request) throws ServletException, IOException {
response.setContentType("image/jpeg, image/jpg, image/png, image/gif");
ImagemSlider imgdatabase = imagemService.getAbstractService().getBean(id);
if (imgdatabase!=null ) {
response.getOutputStream().write(imgdatabase.getImage());
response.getOutputStream().close();
}
}
#Override
public AbstractFactoryService<ImagemSlider> getAbstractService() {
return imagemService;
}
#RequestMapping(value = "/createslideshow/{imagemid}" ,method=RequestMethod.GET)
public String createslider(#PathVariable("imagemid") Long image,Model model){
final ImagemSlider img = this.imagemService.getBean(image);
model.addAttribute("imgslider", img);
model.addAttribute("slideshow", new SlideShow());
return "arquivos/createdisplay";
}
#RequestMapping(value = "/save" ,method=RequestMethod.POST)
public String saveSlideShowr( #RequestParam Long imagemid ,#Valid final SlideShow slideshow,final BindingResult result ,RedirectAttributes redirectAttrs){
ImagemSlider img = this.imagemService.getBean(imagemid);
if (result.hasErrors()) {
redirectAttrs.addFlashAttribute("org.springframework.validation.BindingResult.strategy", result);
redirectAttrs.addFlashAttribute("slideshow", slideshow);
return "redirect:/arquivosbanco/createslideshow/"+imagemid;
}else{
this.slideShowService.salva(slideshow);
if (img != null) {
slideshow.setImagemSlider(img);
this.slideShowService.salva(slideshow);
}
}
return this.getUrlInicial();
}
}
<html xmlns:th="http://www.thymeleaf.org"
xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
layout:decorator="/templates/layouts/principal">
<head>
<title>Criacao slideshow</title>
</head>
<body>
<div class="container-fluid" layout:fragment="corpopagina">
<h3 class="page-header text-center">Criacao slide show</h3>
<form id="registration-form" class="form-horizontal" th:object="${slideShow}" th:action="#{/arquivosbanco/save/?imagemid=}+${imgslider.codigo}" method="post">
<!-- Print all errors here!-->
<div class="col-md-4 col-xs-12">
<div class="thumbnail">
<img class="img-responsive" th:attr="src=#{'/upload/img?codigo='+${imgslider.codigo}}" width="400" height="400" />
<span class="text-center"></span>
</div>
<div class="caption">
<h5>Codigo <span th:text="${imgslider.codigo}" class="badge" style="margin-left:20px">5</span></h5>
<h5>Nome <span th:text="${imgslider.nome}" class="badge" style="margin-left:20px">5</span></h5>
</div>
</div>
<div class="col-md-8 col-xs-12">
<div class="form-group">
<label class="col-xs-3 control-label">Titulo principal</label>
<div class="col-md-8">
<input type="text" class="form-control" name="titulo" />
</div>
</div>
<div class="form-group">
<label class="col-xs-3 control-label">Sub titulo</label>
<div class="col-md-8">
<input type="text" class="form-control input-xs" name="subTitulo" />
</div>
</div>
<div class="form-actions">
<label class="col-md-3 control-label"></label>
<div class="col-md-7">
<button type="submit" class="btn btn-success btn-large">Salvar</button>
</div>
<div class="col-md-1"></div>
</div>
</div>
</form>
</div>
</body>
in my controller is validating usually more in view does not show anything how can I solve?
I am quite some time on stackoverflow, most can not find the solution ...

Answer 1

Your view is not showing anything as you have not included the error messages in your template. Here is an example below.
<td th:if="${#fields.hasErrors('age')}" th:errors="*{age}">Name Error</td>