validate手动校验

1. 引入依赖

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-validation</artifactId>
</dependency>

2. 创建校验工具类

public class ValidationUtils {
    private static Validator validator = Validation.byProvider(HibernateValidator.class).configure().failFast(false).buildValidatorFactory().getValidator();

    public static void validate(Object object, Class<?> group){
        Set<ConstraintViolation<Object>> validateResult = validator.validate(object, group);
        if(!validateResult.isEmpty()){
            throw new ConstraintViolationException(validateResult);
        }
    }
}

3. 编写全局异常类

@Slf4j
@RestControllerAdvice
public class GlobalExceptionHandler {

    /**
     * 校验异常
     */
    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public R exceptionHandler(MethodArgumentNotValidException e) {
        BindingResult bindingResult = e.getBindingResult();
        String errorMsg = "";
        for (FieldError fieldError : bindingResult.getFieldErrors()) {
            errorMsg += fieldError.getDefaultMessage() + "!";
        }
        return R.fail(errorMsg);
    }

    /**
     * 校验异常
     */
    @ExceptionHandler(value = BindException.class)
    public R validationExceptionHandler(BindException e) {
        BindingResult bindingResult = e.getBindingResult();
        String errorMsg = "";
        for (FieldError fieldError : bindingResult.getFieldErrors()) {
            errorMsg += fieldError.getDefaultMessage() + "!";
        }
        return R.fail(errorMsg);
    }

    /**
     * 校验异常
     */
    @ExceptionHandler(value = ConstraintViolationException.class)
    public R ConstraintViolationExceptionHandler(ConstraintViolationException ex) {
        Set<ConstraintViolation<?>> constraintViolations = ex.getConstraintViolations();
        Iterator<ConstraintViolation<?>> iterator = constraintViolations.iterator();
        List<String> msgList = new ArrayList<>();
        while (iterator.hasNext()) {
            ConstraintViolation<?> cvl = iterator.next();
            msgList.add(cvl.getMessageTemplate());
        }
        return R.fail(String.join(",", msgList));
    }

    /**
     * 请求方式不支持
     */
    @ExceptionHandler(value = HttpRequestMethodNotSupportedException.class)
    public R handleException(HttpRequestMethodNotSupportedException e) {
        log.error(e.getMessage(), e);
        return R.fail("不支持' " + e.getMethod() + "'请求");
    }

    /**
     * 拦截未知的运行时异常
     */
    @ExceptionHandler(RuntimeException.class)
    public R notFound(RuntimeException e) {
        log.error("服务器错误，系统运行异常：", e);
        return R.fail("服务器错误，系统运行异常！");
    }

    /**
     * 系统异常
     */
    @ExceptionHandler(Exception.class)
    public R handleException(Exception e) {
        log.error(e.getMessage(), e);
        return R.fail("服务器错误，请联系管理员！");
    }
}

4. 测试

• 创建实体类

@Data
public class Person {

    @NotBlank(message = "身份证号不能为空")
    private String name;

    @NotBlank(message = "电话不能为空")
    private String phone;
}

• 创建方法

    public R test(Person person) {
        //分组没有的话，默认为Default.class
        ValidationUtils.validate(person, Default.class);
        return null;
    }