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blog-backEnd/src/main/java/cn/celess/blog/util/SitemapGenerateUtil.java
2020-05-26 14:03:46 +08:00

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Java
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package cn.celess.blog.util;
import cn.celess.blog.entity.Article;
import cn.celess.blog.mapper.ArticleMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Component;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.File;
import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @Author: 小海
* @Date 2019/07/30 17:29
* @Description
*/
@Component
public class SitemapGenerateUtil {
@Autowired
ArticleMapper articleMapper;
@Value("${sitemap.path}")
private String path;
private Map<String, String> urlList;
private static DocumentBuilder getDocumentBuilder() {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = null;
try {
db = dbf.newDocumentBuilder();
} catch (ParserConfigurationException e) {
e.printStackTrace();
}
return db;
}
@Async
public void createSitemap() {
initList();
if ("".equals(path) || "classpath".equals(path)) {
path = System.getProperty("user.dir") + "/sitemap.xml";
}
File file = new File(path);
try {
if (file.exists()) {
file.delete();
} else {
file.createNewFile();
}
} catch (IOException e) {
e.printStackTrace();
}
DocumentBuilder db = getDocumentBuilder();
Document document = db.newDocument();
document.setXmlVersion("1.0");
document.setXmlStandalone(true);
Element urlset = document.createElement("urlset");
urlset.setAttribute("xmlns", "http://www.sitemaps.org/schemas/sitemap/0.9");
// 创建url 结点
urlList.forEach((s, s2) -> {
Element url = document.createElement("url");
Element loc = document.createElement("loc");
Element lastmod = document.createElement("lastmod");
loc.setTextContent(s);
lastmod.setTextContent(s2);
url.appendChild(loc);
url.appendChild(lastmod);
urlset.appendChild(url);
});
document.appendChild(urlset);
try {
TransformerFactory tff = TransformerFactory.newInstance();
Transformer tf = tff.newTransformer();
tf.setOutputProperty(OutputKeys.INDENT, "yes");
tf.transform(new DOMSource(document), new StreamResult(file));
} catch (TransformerException e) {
e.printStackTrace();
}
}
private void initList() {
urlList = new HashMap<>();
urlList.put("https://www.celess.cn", DateFormatUtil.getForXmlDate(new Date()));
urlList.put("https://www.celess.cn/links", DateFormatUtil.getForXmlDate(new Date()));
urlList.put("https://www.celess.cn/leaveMsg", DateFormatUtil.getForXmlDate(new Date()));
List<Article> articles = articleMapper.findAll();
articles.forEach(article -> {
urlList.put("https://www.celess.cn/article/" + article.getId(), DateFormatUtil.getForXmlDate(
article.getUpdateDate() == null ? article.getPublishDate() : article.getUpdateDate()));
});
}
}