Hibernate Validator Engine Usage

First, the introduction of carrier package

<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator</artifactId>
<version>6.0.16.Final</version>
</dependency>

Second, create a validator package

1. Create a template return,

public  class of ValidationResult {
 //     test results for errors 
    Private  Boolean The hasErrors = to false ; 

//     store map information error 
    Private the Map <String, String> = errorMsgMap new new the HashMap <> (); 

    public  Boolean isHasErrors () {
         return The hasErrors; 
    } 

    public  void setHasErrors ( Boolean The hasErrors) {
         the this .hasErrors = The hasErrors; 
    } 

    public the Map <String, String> getErrorMsgMap () {
         return  errorMsgMap;
    } 

    public void setErrorMsgMap (the Map <String, String> errorMsgMap) {
         the this .errorMsgMap = errorMsgMap; 
    } 

//     implementation of general information acquired by the format string error method results msg 
    public String getErrMsg () {
         return StringUtils.join (errorMsgMap.values () .toArray (), "," ); 
    } 
}

2. Create a class that implements checker

@Component
public class ValidatorImpl implements InitializingBean {

    private Validator validator;

//    实现效验方法并返回检验结果
    public ValidationResult validate(Object bean){
        final ValidationResult result= new ValidationResult();
        Set<ConstraintViolation<Object>> constraintViolationSet=validator.validate(bean);
        if(constraintViolationSet.size()>0){
//            有错误
            result.setHasErrors(true);
            constraintViolationSet.forEach(constraintViolation->{ 
                String errMsg An = constraintViolation.getMessage (); 
                String propertyName = constraintViolation.getPropertyPath () toString ();. 
                . Result.getErrorMsgMap () PUT (propertyName, errMsg An); 
            }); 
        } 
        return Result; 
    } 

    @Override 
    public  void afterPropertiesSet ( ) throws Exception {
 //         the hibernate validtor initialized by the plant makes it instantiates 
        the this .validator = Validation.buildDefaultValidatorFactory () getValidator ();. 

    } 
}

Third, add annotations in the class javaBeanVo

public  class UserModel {
     Private Integer the above mentioned id; 
    @NotBlank (the Message = "User name can not be blank" )
     Private String name; 
    @NotNull (the Message = "sex can not fill" )
     Private Byte Gender; 
    @NotNull (the Message = "Age can not fill " ) 
    @min (value = 0, the Message =" Age must be greater than 0 " ) 
    @max (value = 150, the Message =" I wish you many happy returns, please contact officials (at the age of 150 years old, whichever cap) " )
     Private Integer Age; 
    @NotBlank (the Message = "phone number can not be empty" )
     Private String Cellphone;
    private String registerMode;
    Private String thirdPartyId; 

    @NotBlank (Message = "password is not blank" )
     Private String encrptPassword; 
}

Fourth, practice

    @Autowired
    ValidatorImpl validator;

//方法内写
        ValidationResult result=validator.validate(userModel);
        if (result.isHasErrors()){
            throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR,result.getErrMsg());
        }