edu-saas/edu-user/edu-user-biz/java/com/keao/edu/user/controller/ShortUrlController.java

package com.keao.edu.user.controller;

import com.keao.edu.common.controller.BaseController;
import com.keao.edu.user.entity.ShortUrl;
import com.keao.edu.user.service.ShortUrlService;
import io.swagger.annotations.Api;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Objects;

/**
 * @Author Joburgess
 * @Date 2020.06.22
 */
@Controller
@RequestMapping("/")
@Api(tags = "短链接服务")
public class ShortUrlController extends BaseController {

    @Autowired
    private ShortUrlService shortUrlService;

    @GetMapping(value = "/su/{id}")
    public void redirectUrl(@PathVariable("id") Long id, HttpServletResponse response) throws IOException {
        ShortUrl shortUrl = shortUrlService.get(id);
        if(Objects.isNull(shortUrl)|| StringUtils.isBlank(shortUrl.getUrl())){
            return;
        }
        response.sendRedirect(shortUrl.getUrl());
    }

}