【发布时间】：2022-01-26 21:13:30
【问题描述】：
我正在开发一个简单的 Spring-Boot CRUD 应用程序，我正在尝试使用 CrudRepository 更新或创建新实体实例并保存它们，但我不断收到 (type=Bad Request, status=400 ) 错误，但我真的没有任何验证，我不知道可能是错误，我正在使用旧版本的 spring-boot 来实现旧的 Java 兼容性，因为我将部署应用程序的服务器。 这是我的实体
@Entity
@Table(name = "AAA_TEST_DM_DATA")
public class DataDM implements Serializable{
@OneToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "ID_TIENDA")
private Tienda tienda;
@Column(name = "NIVEL_NSE")
private String nse;
@Column(name = "GENERADOR_PRINCIPAL")
private String generadorUno;
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE)
@Column(name = "DATA_ID")
private Long id;
这是我扩展 CrudRepository 的 Dao 或 repo
public interface IDataDMDao extends CrudRepository <DataDM, Long> {
DataDM findByTienda(Tienda tienda);
}
这是我的服务
public interface IDataDMService {
public List<DataDM> findAll();
public DataDM findOne(Long id);
public void save(DataDM dataDM);
public boolean exists(Tienda tienda);
public DataDM findDm(Tienda tienda);
}
这里是服务实现
@Service
public class IDataDMServiceImp implements IDataDMService {
@Autowired
private IDataDMDao dataDMDao;
@Override
@Transactional(readOnly = true)
public List<DataDM> findAll(){
return (List<DataDM>) dataDMDao.findAll();
}
@Override
@Transactional(readOnly = true)
public DataDM findOne(Long id){
return dataDMDao.findOne(id);
}
@Override
@Transactional
public void save(DataDM data){
dataDMDao.save(data);
}
@Override
@Transactional(readOnly = true)
public boolean exists(Tienda tienda){
if (dataDMDao.findByTienda(tienda) == null){
return false;
} else {
return true;
}
}
@Override
@Transactional(readOnly = true)
public DataDM findDm(Tienda tienda){
return dataDMDao.findByTienda(tienda);
}
}
这里是控制器
@SessionAttributes("data")
public class DesController {
@Autowired
private ITiendaService tiendaService;
@Autowired
private IDataDMService dataService;
@Autowired
private ISesionTiendaService sesionService;
//LOOK AT ALL DATADM
@RequestMapping("/data")
public String dataList(Model model){
model.addAttribute("title", "Datos de tiendas");
model.addAttribute("dataList", dataService.findAll());
return "datas";
}
@RequestMapping("/captura")
public String form(Model model,
@RequestParam(value = "_paramsP_ID") String idsesion,
HttpServletRequest request){
Integer idses = Integer.parseInt(request.getParameter("_paramsP_ID"));
//get tiendaid based on idses
SesionTienda sesion = sesionService.findSesion(idses, "FLT_TIENDA");
Integer id = Integer.parseInt(sesion.getValor());
//get tienda based on given id, then checks if there is data for that tienda
Tienda tienda = tiendaService.findOne(id);
boolean check = dataService.exists(tienda);
DataDM data = null;
//if there is no data create new data entity for that tienda
if (check == false){
data = new DataDM();
data.setTienda(tienda);
//dataService.save(data);
model.addAttribute("data", data);
model.addAttribute("title", "Tiendas form");
return "form";
}
//if there is data, find it and pass it into the model
data = dataService.findDm(tienda);
model.addAttribute("data", data);
model.addAttribute("title", "Tiendas form");
return "form";
}
//Saves the DataDM entity from the form
@RequestMapping(value = "/form", method = RequestMethod.POST)
public String save(Model model, DataDM data, SessionStatus status)
{
dataService.save(data);
status.setComplete();
return "redirect:/success";
}
从给定的参数我得到 Tienda id，我想用这个 Id 查看是否是该 Tienda 的 DataDM 实例，如果存在则使用表单更新它，如果没有实例则创建并保存它，一切正常（findByTienda 工作），直到我从它给我错误的表单中单击保存按钮： （类型=错误请求，状态=400）。 对象 ='dataDM' 的验证失败。错误计数：1，但我真的没有任何验证来保存 DataDM 实体，我想它必须与 save() 方法有关，但我不知道可能是什么，有人可以帮助我吗？
编辑：添加客户端代码
<!DOCTYPE html>
<html lang="en" xmlns:th="/http:wwww.thymeleaf.org">
<head th:replace="layout/layout :: head"></head>
<body>
<header th:replace="layout/layout :: header"></header>
<div class="container">
<h3 th:text=" 'CAPTURA PARA TIENDA ' + ${data.tienda.id} + ' ' + ${data.tienda.nombreTienda} "></h3>
<div class="container">
<form th:action="@{/form}" th:object="${data}" method="post" class="d-flex align-content-start flex-wrap p-2">
<label for="sec-1" class="h4" th:text=" 'ALREDEDORES DE TIENDA' "></label>
<div class="d-flex align-content-start flex-wrap" id="sec-1" name="sec-1" >
<div class="form-group p-2">
<select th:field="*{nse}" id='nse' name="nse" class="form-control">
<option th:value=" '-' " th:text=" '-' "></option>
<option th:value=" 'AB' " th:text=" 'AB' "></option>
<option th:value=" 'C+' " th:text=" 'C+' "></option>
<option th:value=" 'C' " th:text=" 'C' "></option>
<option th:value=" 'C-' " th:text=" 'C-' "></option>
<option th:value=" 'D' " th:text=" 'D' "></option>
</select>
</div>
<div class="form-group p-2">
<input type="submit" value="Guardar Datos" class="btn btn-secondary btn-block" />
</div>
<input type="hidden" th:field="*{id}"/>
<input type="hidden" th:field="*{tienda}"/>
</form>
</div>
【问题讨论】：
标签： java spring spring-boot spring-data-jpa crud-repository