Java之SpringBoot短链接生成

1、IShortUrlService 接口类

public interface IShortUrlService {/*** 生成短链** @param shortUrlRequest* @return*/String shortUrlGenerator(ShortUrlRequest shortUrlRequest);/*** 根据短链获取完整链接** @param shortUrl* @return*/String getUrl(String shortUrl);/*** 增加短链点击量** @param shortUrl* @return*/Boolean addClickCount(String shortUrl);
}

2、ShortUrlServiceImpl 接口实现类

@DubboService
public class ShortUrlServiceImpl implements IShortUrlService {private static final Logger log = LoggerFactory.getLogger(ShortUrlServiceImpl.class);@Resourceprivate RedisTemplate<String, String> redisTemplate;@Resourceprivate ShortUrlMapper shortUrlMapper;@Resourceprivate SpringApplicationContext springApplicationContext;/*** 域名匹配正则表达式*/private static final Pattern DOMAIN_NAME_PATTERN = Pattern.compile("http(s)?://[\\w-]+[.\\w-]+(/)?");@Overridepublic String shortUrlGenerator(ShortUrlRequest shortUrlRequest) {String fullUrl = shortUrlRequest.getFullUrl();if (ObjectUtils.isEmpty(fullUrl)) {throw new BaseException(500, "链接不能为空");}String[] shortUrls = ShortUrlUtil.generator(fullUrl);for (String shortUrl : shortUrls) {// 判断短链是否已存在String url = springApplicationContext.getBean(IShortUrlService.class).getUrl(shortUrl);if (url != null) {if (!url.equals(shortUrlRequest.getFullUrl())) {continue;}return shortUrl;}// 保存长链接与短链接短对应关系ShortUrl shortUrlEntity = new ShortUrl();shortUrlEntity.setFullUrl(fullUrl);shortUrlEntity.setShotCode(shortUrl);shortUrlEntity.setExpirationDate(shortUrlRequest.getExpirationDate());Matcher matcher = DOMAIN_NAME_PATTERN.matcher(fullUrl);if (!matcher.find()) {throw new BaseException(500, "链接解析失败");}String baseUrl = matcher.group();shortUrlEntity.setBaseUrl(baseUrl);shortUrlEntity.setSuffixUrl(fullUrl.substring(baseUrl.length() - 1));shortUrlMapper.insert(shortUrlEntity);return shortUrl;}throw new BaseException(500, "链接生成失败");}@Override@Cacheable(cacheNames = "shortUrl", key = "#shortUrl", unless = "#result == null")public String getUrl(String shortUrl) {QueryWrapper<ShortUrl> shortUrlQw = new QueryWrapper<>();shortUrlQw.eq("shot_code", shortUrl);shortUrlQw.eq("del_flag", DelFlag.NORMAL);ShortUrl url = shortUrlMapper.selectOne(shortUrlQw);return url == null ? null : url.getFullUrl();}@Override@Transactional(rollbackFor = Exception.class)public Boolean addClickCount(String shortUrl) {QueryWrapper<ShortUrl> shortUrlQw = new QueryWrapper<>();shortUrlQw.eq("shot_code", shortUrl);shortUrlQw.eq("del_flag", DelFlag.NORMAL);ShortUrl url = shortUrlMapper.selectOne(shortUrlQw);if (url == null) {return false;}url.setTotalClickCount(url.getTotalClickCount() + 1);return shortUrlMapper.updateById(url) > 0;}@Scheduled(cron = "0 0 3 * * * ")public void removeShortUrl() {QueryWrapper<ShortUrl> queryWrapper = new QueryWrapper<>();queryWrapper.le("expirationDate", DateUtil.getTime());List<ShortUrl> shortUrls = shortUrlMapper.selectList(queryWrapper);//删除缓存数据库
//        for (ShortUrl shortUrl : shortUrls) {
//            redisTemplate.delete(shortUrl.getShotCode());
//        }List<Long> shortUrlIds = shortUrls.stream().map(ShortUrl::getId).collect(Collectors.toList());//删除mysql数据库shortUrlMapper.deleteBatchIds(shortUrlIds);
//        try {
//            Thread.sleep(1000);
//            //再次删除缓存数据库
//            for (ShortUrl shortUrl : shortUrls) {
//                redisTemplate.delete(shortUrl.getShotCode());
//            }
//        } catch (InterruptedException e) {
//            e.printStackTrace();
//        }}
}

3、ShortUrlHandler 工具类

public class ShortUrlHandler implements Runnable{private final IShortUrlService  shortUrlService;private final String shortUrl;public ShortUrlHandler(IShortUrlService shortUrlService, String shortUrl) {this.shortUrlService = shortUrlService;this.shortUrl = shortUrl;}@Overridepublic void run() {shortUrlService.addClickCount(shortUrl);}
}

4、ShortUrlController 控制器类

@RestController
@RequestMapping("/api/shortUrl")
@Api(tags = {"C端-短链接"})
@RefreshScope
public class ShortUrlController extends BaseController {@DubboReferenceprivate IShortUrlService shortUrlService;@Resourceprivate ThreadPoolTaskExecutor threadPoolTaskExecutor;//short-utl://    prefix: http://test.gateway.yaotiao.net/coupon-provider/api/shortUrl/redirect/@Value("${short-utl.prefix:https://gateway.jumituangou.com/coupon-provider/api/shortUrl/redirect/}")private String prefixUrl;@GetMapping("/generator")@ApiOperation("生成短链")public ResponseResult<String> shortUrlGenerator(ShortUrlRequest shortUrlRequest) {shortUrlRequest.setExpirationDate(DateUtil.getDateAfterDay(new Date(), 60));String shortUrl = prefixUrl + shortUrlService.shortUrlGenerator(shortUrlRequest);return success(shortUrl);}@GetMapping("/redirect/{shortUrl}")@ApiOperation("短链重定向")@IgnoreUrlsAnnon("/api/shortUrl/") //白名单public void redirect(@PathVariable String shortUrl, HttpServletResponse response) {String url = shortUrlService.getUrl(shortUrl);try {response.sendRedirect(url);} catch (IOException e) {e.printStackTrace();}// 异步增加短链点击次数ShortUrlHandler shortUrlHandler = new ShortUrlHandler(shortUrlService, shortUrl);threadPoolTaskExecutor.execute(shortUrlHandler);}
}

5、mysql 表 short_url;

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