Question

我正在使用Spring Boot 2.1.2 ...

我想知道在Spring Boot中是否存在现有概念或功能来为具有CrudRepository的常见实体创建通用添加或编辑页面？我想省略一遍又一遍地编写所有样板代码，以在thymeleaf中添加或编辑页面，而改用通用页面。

所以我想做的是这样的通用形式：

<form action="#" th:action="@{/edit-$entityName}" th:object="${entity}" method="post">

        <input type="hidden" th:field="*{id}" id="id"/>

<!-- iterating over each field and creating an input form element -->
        <div class="form-group" th:each="field: ${fields}">
            <label for="${field}" th:text="${field}"/>
            <input type="text" th:value="${entity['name']}" th:attr="id=#{${field}}, placeholder=#{$field}" class="form-control">
            <span th:if="${#fields.hasErrors($field)}" th:errors="*{$field}"></span>
        </div>

        <button type="submit" class="btn btn-default">save</button>
    </form>

使用添加字段的控制器：

@Controller
public class EntityController {

  @Autowired
  private EntityService service;

  @RequestMapping("/edit-entity/{id}")
  public String editProject(Map<String, Object> model, @PathVariable("id") Integer id) {
    Optional<MyEntity> byId = service.getById(id);
    model.put("entity", byId.orElse(new MyEntity()));
    model.put("entityName", "myEntity");

    List<String> fields = new ArrayList<>();

    for (Field field : MyEntity.class.getDeclaredFields()) {
      if (!field.getName().equals("id"))
        fields.add(field.getName());
    }

    model.put("fields", fields);

    return "edit-page";
  }
}

详细信息：我有一个简单的实体“用户”

@Entity
@Table(name = "user_tbl")
public class User {

  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  private Integer id;
  private String name;
  private String email;
  private int age;

  public User() {
  }

  public User(String name, int age) {
    this.name = name;
    this.age = age;
  }

  public Integer getId() {
    return id;
  }

  public void setId(Integer id) {
    this.id = id;
  }

  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }

  public int getAge() {
    return age;
  }

  public void setAge(int age) {
    this.age = age;
  }

  public String getEmail() {
    return email;
  }

  public void setEmail(String email) {
    this.email = email;
  }
}

要添加或编辑此用户实体，我创建了以下表单（省略了该表单的控制器代码和一些标记）：

    <form action="#" th:action="@{/edit-user}" th:object="${user}" method="post">

        <input type="hidden" th:field="*{id}" id="id"/>

        <div class="form-group">
            <label for="name">Name</label>
            <input type="text" th:field="*{name}" id="name" placeholder="Name" class="form-control">
            <span th:if="${#fields.hasErrors('name')}" th:errors="*{name}"></span>
        </div>

        <div class="form-group">
            <label for="email">Email</label>
            <input type="text" th:field="*{email}" id="email" placeholder="email" class="form-control">
            <span th:if="${#fields.hasErrors('email')}" th:errors="*{email}"></span>
        </div>

        <div class="form-group">
            <label for="age">Alter</label>
            <input type="text" th:field="*{age}" id="age" placeholder="age" class="form-control">
            <span th:if="${#fields.hasErrors('age')}" th:errors="*{age}"></span>
        </div>

        <button type="submit" class="btn btn-default">save</button>
    </form>

如果我要创建另一个实体anotherUser，我要复制粘贴所有这些内容，并且可能会更改某些名称或字段或其他内容，但是它们彼此完全相同...

是否有办法一次执行此操作，并将其重新用于我将定义的所有其他实体？

Spring Boot thymeleaf通用实体编辑页面

0 个答案: