Java 使用Spring MVC提供sitemap.xml和robots.txt

使用

springmvc

服务器

sitemap.xml

和

robots.txt

的最佳方式是什么？我希望以最干净的方式通过

控制器

为这些文件提供服务器

我依靠JAXB为我生成sitemap.xml

我的控制器如下所示，我有一些数据库表来跟踪我希望在站点地图中显示的链接：-

SitemapController.java

@Controller
public class SitemapController {

    @RequestMapping(value = "/sitemap.xml", method = RequestMethod.GET)
    @ResponseBody
    public XmlUrlSet main() {
        XmlUrlSet xmlUrlSet = new XmlUrlSet();
        create(xmlUrlSet, "", XmlUrl.Priority.HIGH);
        create(xmlUrlSet, "/link-1", XmlUrl.Priority.HIGH);
        create(xmlUrlSet, "/link-2", XmlUrl.Priority.MEDIUM);

        // for loop to generate all the links by querying against database
        ...

        return xmlUrlSet;
    }

    private void create(XmlUrlSet xmlUrlSet, String link, XmlUrl.Priority priority) {
        xmlUrlSet.addUrl(new XmlUrl("http://www.mysite.com" + link, priority));
    }

}

@XmlAccessorType(value = XmlAccessType.NONE)
@XmlRootElement(name = "url")
public class XmlUrl {
    public enum Priority {
        HIGH("1.0"), MEDIUM("0.5");

        private String value;

        Priority(String value) {
            this.value = value;
        }

        public String getValue() {
            return value;
        }
    }

    @XmlElement
    private String loc;

    @XmlElement
    private String lastmod = new DateTime().toString(DateTimeFormat.forPattern("yyyy-MM-dd"));

    @XmlElement
    private String changefreq = "daily";

    @XmlElement
    private String priority;

    public XmlUrl() {
    }

    public XmlUrl(String loc, Priority priority) {
        this.loc = loc;
        this.priority = priority.getValue();
    }

    public String getLoc() {
        return loc;
    }

    public String getPriority() {
        return priority;
    }

    public String getChangefreq() {
        return changefreq;
    }

    public String getLastmod() {
        return lastmod;
    }
}

@XmlAccessorType(value = XmlAccessType.NONE)
@XmlRootElement(name = "urlset", namespace = "http://www.sitemaps.org/schemas/sitemap/0.9")
public class XmlUrlSet {

    @XmlElements({@XmlElement(name = "url", type = XmlUrl.class)})
    private Collection<XmlUrl> xmlUrls = new ArrayList<XmlUrl>();

    public void addUrl(XmlUrl xmlUrl) {
        xmlUrls.add(xmlUrl);
    }

    public Collection<XmlUrl> getXmlUrls() {
        return xmlUrls;
    }
}

@Controller
public class RobotsController {

    @RequestMapping(value = "/robots.txt", method = RequestMethod.GET)
    public String getRobots(HttpServletRequest request) {
        return (Arrays.asList("mysite.com", "www.mysite.com").contains(request.getServerName())) ?
                "robotsAllowed" : "robotsDisallowed";
    }
}

XmlUrl.java

@Controller
public class SitemapController {

    @RequestMapping(value = "/sitemap.xml", method = RequestMethod.GET)
    @ResponseBody
    public XmlUrlSet main() {
        XmlUrlSet xmlUrlSet = new XmlUrlSet();
        create(xmlUrlSet, "", XmlUrl.Priority.HIGH);
        create(xmlUrlSet, "/link-1", XmlUrl.Priority.HIGH);
        create(xmlUrlSet, "/link-2", XmlUrl.Priority.MEDIUM);

        // for loop to generate all the links by querying against database
        ...

        return xmlUrlSet;
    }

    private void create(XmlUrlSet xmlUrlSet, String link, XmlUrl.Priority priority) {
        xmlUrlSet.addUrl(new XmlUrl("http://www.mysite.com" + link, priority));
    }

}

@XmlAccessorType(value = XmlAccessType.NONE)
@XmlRootElement(name = "url")
public class XmlUrl {
    public enum Priority {
        HIGH("1.0"), MEDIUM("0.5");

        private String value;

        Priority(String value) {
            this.value = value;
        }

        public String getValue() {
            return value;
        }
    }

    @XmlElement
    private String loc;

    @XmlElement
    private String lastmod = new DateTime().toString(DateTimeFormat.forPattern("yyyy-MM-dd"));

    @XmlElement
    private String changefreq = "daily";

    @XmlElement
    private String priority;

    public XmlUrl() {
    }

    public XmlUrl(String loc, Priority priority) {
        this.loc = loc;
        this.priority = priority.getValue();
    }

    public String getLoc() {
        return loc;
    }

    public String getPriority() {
        return priority;
    }

    public String getChangefreq() {
        return changefreq;
    }

    public String getLastmod() {
        return lastmod;
    }
}

@XmlAccessorType(value = XmlAccessType.NONE)
@XmlRootElement(name = "urlset", namespace = "http://www.sitemaps.org/schemas/sitemap/0.9")
public class XmlUrlSet {

    @XmlElements({@XmlElement(name = "url", type = XmlUrl.class)})
    private Collection<XmlUrl> xmlUrls = new ArrayList<XmlUrl>();

    public void addUrl(XmlUrl xmlUrl) {
        xmlUrls.add(xmlUrl);
    }

    public Collection<XmlUrl> getXmlUrls() {
        return xmlUrls;
    }
}

@Controller
public class RobotsController {

    @RequestMapping(value = "/robots.txt", method = RequestMethod.GET)
    public String getRobots(HttpServletRequest request) {
        return (Arrays.asList("mysite.com", "www.mysite.com").contains(request.getServerName())) ?
                "robotsAllowed" : "robotsDisallowed";
    }
}

XmlUrlSet.java

@Controller
public class SitemapController {

    @RequestMapping(value = "/sitemap.xml", method = RequestMethod.GET)
    @ResponseBody
    public XmlUrlSet main() {
        XmlUrlSet xmlUrlSet = new XmlUrlSet();
        create(xmlUrlSet, "", XmlUrl.Priority.HIGH);
        create(xmlUrlSet, "/link-1", XmlUrl.Priority.HIGH);
        create(xmlUrlSet, "/link-2", XmlUrl.Priority.MEDIUM);

        // for loop to generate all the links by querying against database
        ...

        return xmlUrlSet;
    }

    private void create(XmlUrlSet xmlUrlSet, String link, XmlUrl.Priority priority) {
        xmlUrlSet.addUrl(new XmlUrl("http://www.mysite.com" + link, priority));
    }

}

@XmlAccessorType(value = XmlAccessType.NONE)
@XmlRootElement(name = "url")
public class XmlUrl {
    public enum Priority {
        HIGH("1.0"), MEDIUM("0.5");

        private String value;

        Priority(String value) {
            this.value = value;
        }

        public String getValue() {
            return value;
        }
    }

    @XmlElement
    private String loc;

    @XmlElement
    private String lastmod = new DateTime().toString(DateTimeFormat.forPattern("yyyy-MM-dd"));

    @XmlElement
    private String changefreq = "daily";

    @XmlElement
    private String priority;

    public XmlUrl() {
    }

    public XmlUrl(String loc, Priority priority) {
        this.loc = loc;
        this.priority = priority.getValue();
    }

    public String getLoc() {
        return loc;
    }

    public String getPriority() {
        return priority;
    }

    public String getChangefreq() {
        return changefreq;
    }

    public String getLastmod() {
        return lastmod;
    }
}

@XmlAccessorType(value = XmlAccessType.NONE)
@XmlRootElement(name = "urlset", namespace = "http://www.sitemaps.org/schemas/sitemap/0.9")
public class XmlUrlSet {

    @XmlElements({@XmlElement(name = "url", type = XmlUrl.class)})
    private Collection<XmlUrl> xmlUrls = new ArrayList<XmlUrl>();

    public void addUrl(XmlUrl xmlUrl) {
        xmlUrls.add(xmlUrl);
    }

    public Collection<XmlUrl> getXmlUrls() {
        return xmlUrls;
    }
}

@Controller
public class RobotsController {

    @RequestMapping(value = "/robots.txt", method = RequestMethod.GET)
    public String getRobots(HttpServletRequest request) {
        return (Arrays.asList("mysite.com", "www.mysite.com").contains(request.getServerName())) ?
                "robotsAllowed" : "robotsDisallowed";
    }
}

---

将此行添加到dispatcher servlet xml文件：

<mvc:resources mapping="/robots.txt" location="/WEB-INF/robots.txt" order="0"/> 

---

将robots.txt放在WEB-INF/robots.txt。yoursite.com/robots.txt将可以访问该文件

感谢您的回答，我将在结束一个问题时稍等片刻，看看是否会有更多人参与……您需要确保这些控制器方法被大量缓存。通常情况下，这些请求甚至不应该出现在应用服务器上，而是由apache作为静态内容提供。@Limition也很好，您可以将其作为应答而不是聊天。无论如何，我需要动态创建我的sitemap.xml，但对于机器人来说，这应该是非常必要的。我在这里发布了我是如何做到这一点的答案：。它使用sitemapgen4j：如果有人使用生成的XML，请检查这个答案