SpringBoot バリデーション
SpringBootのバリデータを試す
・@NotBlank付与
import java.io.Serializable; import javax.validation.constraints.NotBlank; public class User implements Serializable { private static final long serialVersionUID = 1L; @NotBlank private String name; @NotBlank private String password; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } }
・バリデータのメッセージを設定
// src/main/resources/ValidationMessages.properties
javax.validation.constraints.NotBlank.message = 入力してください。
・@Valid付与、BindingResultもセットで必要
@RequestMapping(value="/", method=RequestMethod.GET) public ModelAndView index(ModelAndView mv) { mv.addObject("user", new User()); mv.setViewName("index"); return mv; } @RequestMapping(value="/regist", method=RequestMethod.POST) public ModelAndView regist(@ModelAttribute @Valid User user, BindingResult result, ModelAndView mv) { if (result.hasErrors()) { mv.setViewName("index"); mv.addObject("user", user); return mv; } mv.setViewName("result"); mv.addObject("user", user); return mv; }
・バリデーションメッセージの表示制御
<!DOCTYPE html> <html xmlns:th="http://www.thymeleaf.org"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> </head> <body> <form method="post" action="regist" th:object="${user}" > <label for="name">名前：</label> <input type="text" name="name" th:field="*{name}" th:errorclass="error-field"> <span th:if="${#fields.hasErrors('name')}" th:errors="*{name}"></span><br> <label for="password">パスワード：</label> <input type="text" name="password" th:field="*{password}" th:errorclass="error-field"> <span th:if="${#fields.hasErrors('password')}" th:errors="password"></span> <input type="submit" value="送信" /> </form> </body> </html>
