<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
    <dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-validator</artifactId>
      <version>5.4.1.Final</version>
    </dependency>

public class UserInfo {
  @NotNu1l(message="編號不能為空")
  private Integer user_ id;
  @NotNull
  @Length(min = 2,max = 8,message = "用戶名不能少于2位大于8位" )
  private String user. name;
  @Email(message = "郵箱格式不正確")
  private String user. email;
  @Pattern(regexp = "" ,message = "手機號格式不正切")
  private String user. phone;
  private String user_ address;
  @Pattern(regexp =“" ,message =” 身份證號不正確")
  private String user. cardCode;
  //身份證號
  pub1ic Integer getUser_ id() {
    return user_ id;
  }

<form action=" /my/validate" method="post">
  編號: <input type="text" name="user. id"/> <br/>
  姓名: <input type= "text" name="user. name"/>
  <br/>
  郵箱: <input type="text" name="user. email"/> <br/>
  手機號: <input type="text" name="user phone"/> <br/>
  地址: <input type="text" name="user. address"/> <br/>
  身份證號:<input type="text" name="user cardCode"/> <br/>
  <input type="submit" value=" 提交" />
</form>

@RequestMapping("/validate")
  public String validate(@Valid UserInfo info, BindingResult bindingResult){
//如果有異常信息
    if (bindingResult . hasErrors()) {
//獲取異常信息對象
      List<0bjectError> errors = bindingResult . getAllErrors();
//將異常信息輸出
      for (ObjectError error : errors)
      {
        System. out .println(error . getDefaultMessage());
      }
      System. out . print1n(info. getUser_ email());
      return "index" ;
    }