Spring bean name'；的BindingResult或普通目标对象；客户'；可用作请求属性
我面临spring和thymeleaf的问题，我试图用一个名为cliente的实体的数据填充表单，但我在浏览器中收到一条白标签错误页面消息，在控制台中收到这条消息Spring bean name'；的BindingResult或普通目标对象；客户'；可用作请求属性,spring,thymeleaf,Spring,Thymeleaf,我面临spring和thymeleaf的问题，我试图用一个名为cliente的实体的数据填充表单，但我在浏览器中收到一条白标签错误页面消息，在控制台中收到这条消息 Neither BindingResult nor plain target object for bean name 'cliente' available as request attribute 这是客户 package com.bolsadeideasspringboot.app.models.entity; import
Neither BindingResult nor plain target object for bean name 'cliente' available as request attribute
package com.bolsadeideasspringboot.app.models.entity;
import java.io.Serializable;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.validation.constraints.Email;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotNull;
import org.springframework.format.annotation.DateTimeFormat;
@Entity
@Table(name="clientes")
public class Cliente implements Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@NotEmpty
private String nombre;
@NotEmpty
private String apellido;
@NotEmpty
@Email
private String email;
@Column(name="create_at")
@Temporal(TemporalType.DATE)
@DateTimeFormat(pattern="dd/MM/yyyy")
private Date createAt;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getNombre() {
return nombre;
}
public void setNombre(String nombre) {
this.nombre = nombre;
}
public String getApellido() {
return apellido;
}
public void setApellido(String apellido) {
this.apellido = apellido;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Date getCreateAt() {
return createAt;
}
public void setCreateAt(Date createAt) {
this.createAt = createAt;
}
}
@RequestMapping(value="/form/{id}")
public String editar(@ModelAttribute("form") @PathVariable(value="id")Long id, Map<String, Object>model) {
Cliente cliente = null;
if(id > 0) {
clientedao.findOne(id);
model.put("cliente", cliente);
model.put("titulo", "Editar Cliente");
return "form";
}
else {
return "redirect:/listar";
}
}
public Cliente findOne(Long id);
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8" />
<title th:text="${titulo}">Insert title here</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-4 col-md-offset-3">
<h1 class="text-success" th:text="${titulo}"></h1>
<form th:action="@{/form}" th:object="${cliente}" method="post">
<div class="form-group">
<label>Nombre</label>
<input class="form-control" type="text" th:field="*{nombre}" placeholder="Nombre"/>
<small class="form-text text-danger" th:if="${#fields.hasErrors('nombre')}" th:errors="*{nombre}"></small>
</div>
<div class="form-group">
<label>Apellido</label>
<input class="form-control" type="text" th:field="*{apellido}" placeholder="Apellido"/>
<small class="form-text text-danger" th:if="${#fields.hasErrors('apellido')}" th:errors="*{apellido}"></small>
</div>
<div class="form-group">
<label>Email</label>
<input class="form-control" type="text" th:field="*{email}" placeholder="correo@ejemplo.com"/>
<small class="form-text text-danger" th:if="${#fields.hasErrors('email')}" th:errors="*{email}"></small>
</div>
<div class="form-group">
<label>Fecha</label>
<input class="form-control" type="text" th:field="*{createAt}" placeholder="DD/MM/YYYY"/>
<small class="form-text text-danger" th:if="${#fields.hasErrors('createAt')}" th:errors="*{createAt}"></small>
</div>
<div class="form-group">
<input class="btn btn-primary" type="submit" value="Crear Cliente" />
</div>
<input type="hidden" th:field="*{id}" />
</form>
</div>
</div>
</div>
</body>
</html>
在此处插入标题
名义
阿佩利多
电子邮件
德国福查
put（）model.addAttribute（“cliente”，clientedao.findOne（id））
您通常还希望使用@GetMapping
请求填充表单。并使用@PostMapping
进行提交
旁白：还可以看看ProjectLombok，让您的bean不那么容易出错，更具可读性。您可以删除所有这些getter和setter，只需使用@Data
注释类
虽然没有被弃用，但您也希望不再使用java.util.Date
，而是使用更新的日期/时间类。谢谢兄弟，但我已经解决了这个问题，问题是，我没有将（clientedao.findOne（id））的值赋给clienter变量，但我会给您一个可接受的答案（我不知道如何结束主题xd）你是对的！无论如何，我都会为未来的读者更新答案
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8" />
<title th:text="${titulo}">Insert title here</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-4 col-md-offset-3">
<h1 class="text-success" th:text="${titulo}"></h1>
<form th:action="@{/form}" th:object="${cliente}" method="post">
<div class="form-group">
<label>Nombre</label>
<input class="form-control" type="text" th:field="*{nombre}" placeholder="Nombre"/>
<small class="form-text text-danger" th:if="${#fields.hasErrors('nombre')}" th:errors="*{nombre}"></small>
</div>
<div class="form-group">
<label>Apellido</label>
<input class="form-control" type="text" th:field="*{apellido}" placeholder="Apellido"/>
<small class="form-text text-danger" th:if="${#fields.hasErrors('apellido')}" th:errors="*{apellido}"></small>
</div>
<div class="form-group">
<label>Email</label>
<input class="form-control" type="text" th:field="*{email}" placeholder="correo@ejemplo.com"/>
<small class="form-text text-danger" th:if="${#fields.hasErrors('email')}" th:errors="*{email}"></small>
</div>
<div class="form-group">
<label>Fecha</label>
<input class="form-control" type="text" th:field="*{createAt}" placeholder="DD/MM/YYYY"/>
<small class="form-text text-danger" th:if="${#fields.hasErrors('createAt')}" th:errors="*{createAt}"></small>
</div>
<div class="form-group">
<input class="btn btn-primary" type="submit" value="Crear Cliente" />
</div>
<input type="hidden" th:field="*{id}" />
</form>
</div>
</div>
</div>
</body>
</html>