demo

實體類

public class UserBean {
    @NotBlank(message="使用者名稱不能為空")
    private String userName;

    @NotBlank(message="年齡不能為空")
    @Pattern(regexp="^[0-9]{1,2}$",message="年齡不正確")
    private String age;

    @AssertFalse(message = "必須為false")
    private Boolean isFalse;
    /**
     * 如果是空，則不校驗，如果不為空，則校驗
     */
    @Pattern(regexp="^[0-9]{4}-[0-9]{2}-[0-9]{2}$",message="出生日期格式不正確")
    private String birthday;
}
 

測試;

@RestController
@RequestMapping("/vh")
public class ValidatorController {
 
    @RequestMapping("/resign")
    public String resign(@RequestBody @Valid  UserBean user ) {
    	
    	
        return "success";
    }
}

如果校驗通不過返回這樣的報文:

這種方式返回的報文不能控制,我們來看第二種方案:

工具類;

public class ValidatorUtils {
    private static Validator validator;

    static {
        validator = Validation.buildDefaultValidatorFactory().getValidator();
    }

    /**
     * 校驗物件
     * @param object        待校驗物件
     * @throws RuntimeException  校驗不通過，則報RuntimeException異常
     */
    public static void validateEntity(Object object)
            throws RuntimeException {
        Set<ConstraintViolation<Object>> constraintViolations = validator.validate(object);
        if (!constraintViolations.isEmpty()) {
        	ConstraintViolation<Object> constraint = constraintViolations.iterator().next();
        	throw new RuntimeException(constraint.getMessage());
        }
    }
}
 

測試:

@RestController
@RequestMapping("/vh")
public class ValidatorController {
 
    @RequestMapping("/resign")
    public String resign(@RequestBody @Valid  UserBean user ) {
    	ValidatorUtils.validateEntity(user);
    	
        return "success";
    }
}

附錄:

註解說明: