Hibernate Validator Engine的用法

一、引入架包

maven地址  点击即可。

<!-- https://mvnrepository.com/artifact/org.hibernate.validator/hibernate-validator -->
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator</artifactId>
<version>6.0.16.Final</version>
</dependency>

二、创建validator包

1、创建返回模版，

public class ValidationResult {
//    检验结果是否有错
    private boolean hasErrors=false;

//    存放错误信息的map
    private Map<String,String> errorMsgMap=new HashMap<>();

    public boolean isHasErrors() {
        return hasErrors;
    }

    public void setHasErrors(boolean hasErrors) {
        this.hasErrors = hasErrors;
    }

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

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

//    实现通用的通过格式化字符串信息获取错误结果的msg方法
    public String getErrMsg(){
        return StringUtils.join(errorMsgMap.values().toArray(),",");
    }
}

2、创建检验器实现类

@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=constraintViolation.getMessage();
                String propertyName=constraintViolation.getPropertyPath().toString();
                result.getErrorMsgMap().put(propertyName,errMsg);
            });
        }
        return result;
    }

    @Override
    public void afterPropertiesSet() throws Exception {
//        将hibernate validtor通过工厂的初始化方式使其实例化
        this.validator= Validation.buildDefaultValidatorFactory().getValidator();

    }
}

三、在javaBeanVo类上添加注解

public class UserModel {
    private Integer id;
    @NotBlank(message = "用户名不能为空")
    private String name;
    @NotNull(message = "性别不能不填写")
    private Byte gender;
    @NotNull(message = "年龄不能不填写")
    @Min(value =0,message = "年龄必须大于0")
    @Max(value = 150,message = "祝你寿比南山，请联系官方人员(年龄以150岁封顶为准)")
    private Integer age;
    @NotBlank(message = "手机号码不能为空")
    private String telphone;
    private String registerMode;
    private String thirdPartyId;

    @NotBlank(message = "密码不能为空")
    private String encrptPassword;
}

四、实践

    @Autowired
    ValidatorImpl validator;

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