JavaBeanvalication验证实现方法示例

public class UserBean {
  //不为空判断
  @NotEmpty(message = "用户名不能为空")
  private String userName;
  //手机正则验证
  @NotEmpty (message = "电话号码不能为空")
  @Pattern(regexp = "^1([38][0-9]|4[579]|5[0-3,5-9]|6[6]|7[0135678]|9[89])\\d{8}$",message = "电话号码不正确")
  private String mobile;
  //数值限定大小
  @NotNull(message = "年龄不能为空")
  @Min(message = "你未成年额！",value = 18)
  private Integer age;
  //默认匹配所有的正则，需要自己写匹配规则，使用里面的regexp参数
  @Email(message = "email格式不对")
  private String email;
 
  public String getUserName() {
    return userName;
  }
 
  public void setUserName(String userName) {
    this.userName = userName;
  }
 
  public String getMobile() {
    return mobile;
  }
 
  public void setMobile(String mobile) {
    this.mobile = mobile;
  }
 
  public Integer getAge() {
    return age;
  }
 
  public void setAge(Integer age) {
    this.age = age;
  }
 
  public String getEmail() {
    return email;
  }
 
  public void setEmail(String email) {
    this.email = email;
  }
}

@RestController
public class ValidationController {
 
  @PostMapping("addUserMessage")
  public String addUserMessage(@Valid @RequestBody UserBean userBean,BindingResult bindingResult){
    //如果表单验证错误，获取message中的信息并返回
    if(bindingResult.hasErrors()){
      return bindingResult.getFieldError().getDefaultMessage();
    }
    //表单验证成功之后，可以写逻辑代码或者写入数据
    return "操作成功";
  }
}