JAVA设计模式-行为型模式-责任链模式（根据BEAN 类型调用）

本文链接：https://blog.youkuaiyun.com/javaxueba/article/details/132169852

模拟场景：按自己定义的顺序校验人的身份证，手机，邮箱，缺一个都是人员信息不完整

1-接口以及校验身份证，手机，邮箱的实现类

public interface ReviewHandler {

    Result reviewer(UserInfo userInfo);
}

@Component("BASE")
public class BaseReviewHandler implements ReviewHandler {

    /**
     * <简述>校验身份证
     * <详细描述>
     * @author syf
     * @date 2023/8/8 16:27
     * @param userInfo
     * @return com.ratelimiter.reviewHandlers.Result
     */
    @Override
    public Result reviewer(UserInfo userInfo) {
        System.out.println("校验身份证------>>>");
        int length = userInfo.getIdCard().split("\\s+").length;
        if (length == 18){
            return new Result("200", "success");
        }else {
            return new Result("500", "failed");
        }
    }
}

@Component("EMAIL")
public class EmailReviewHandler implements com.ratelimiter.reviewHandlers.ReviewHandler {

    /**
     * <简述>校验邮箱
     * <详细描述>
     * @author syf
     * @date 2023/8/8 16:27
     * @param userInfo
     * @return com.ratelimiter.reviewHandlers.Result
     */
    @Override
    public Result reviewer(UserInfo userInfo) {
        System.out.println("校验邮箱------>>>");
        boolean contains = userInfo.getEmail().contains("@");
        if (contains){
            return new Result("200", "success");
        }else {
            return new Result("500", "failed");
        }
    }
}

@Component("PHONE")
public class MobileReviewHandler implements ReviewHandler {
    
    /**
     * <简述>校验手机号
     * <详细描述>
     * @author syf
     * @date 2023/8/8 16:27
     * @param userInfo
     * @return com.ratelimiter.reviewHandlers.Result
     */
    @Override
    public Result reviewer(UserInfo userInfo) {
        System.out.println("校验手机------>>>");
        Pattern REGEX_MOBILE = Pattern.compile("^(1[3-9][0-9])\\d{8}$");
        Matcher matcher = REGEX_MOBILE.matcher(userInfo.getPhone());
        if (matcher.matches()){
            return new Result("200", "success");
        }else {
            return new Result("500", "failed");
        }
    }
}

2-service层逻辑

根据传入的 "reviewers":"BASE,EMAIL,PHONE" 类型
拿到 (ReviewHandler) SpringUtils.getBean(beanName) 类

@Service
public class ReviewHandlerService {

    /**
     * <简述>
     * <详细描述>
     *     {
     * "idCard":"320882198903085627",
     * "email":"133745454@qq.com",
     * "phone":"13626187923",
     * "reviewers":"BASE,EMAIL,PHONE"
     * }
     * @param userInfo
     * @return com.ratelimiter.reviewHandlers.Result
     * @author syf
     * @date 2023/8/8 12:01
     */
    public Result doSave(UserInfo userInfo) {
        //拿到传入校验类型list
        List<ReviewHandler> reviewHandlers = buildHandlers(userInfo);
        Iterator<ReviewHandler> iterator = reviewHandlers.iterator();
        //循环调用 reviewer 方法进行校验
        Result result = null;
        while (iterator.hasNext()) {
            ReviewHandler n = iterator.next();
            result = n.reviewer(userInfo);
        }
        //业务逻辑。。。。
        return result;
    }


    /**
     * <简述>将传入的类型转为ReviewHandler接口的list
     * <详细描述>
     * @param userInfo
     * @return java.util.List<com.ratelimiter.reviewHandlers.ReviewHandler>
     * @author syf
     * @date 2023/8/8 11:56
     */
    List<ReviewHandler> buildHandlers(UserInfo userInfo) {
        String[] split = StringUtils.split(userInfo.getReviewers(), ",");
        List<String> strings = Arrays.asList(split);
        return strings.stream().map(beanName -> {
            return (ReviewHandler) SpringUtils.getBean(beanName);
        }).collect(Collectors.toList());
    }

3-controler 编写已经测试结果展示

@RestController
public class ReviewController {

    @Autowired
    private ReviewHandlerService reviewHandlerService;


    @PostMapping("/review")
    public ResponseEntity<String> reviews(@RequestBody UserInfo userInfo) {
        Result result = reviewHandlerService.doSave(userInfo);
        if (!"200".equals(result.getCode())) {
            return ResponseEntity.ok("人员身份信息不全,请重新填写");
        }
        return ResponseEntity.ok("人员身份信息正确");
    }
}

入参展示

传入："reviewers":"BASE,EMAIL,PHONE" 类型