在JAVA项目中实现RSS功能

最新推荐文章于 2021-02-12 09:57:59 发布

转载最新推荐文章于 2021-02-12 09:57:59 发布 · 1.3k 阅读

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本文介绍了一个使用Java实现的RSS解析器，该解析器能够从特定的XML文件中读取房屋租赁信息，并将其转换为一系列对象。通过DOM4J库解析XML，从每个RSS条目中提取标题、链接和发布日期等信息。

package util;

import java.io.File;
import java.io.FileInputStream;
import java.net.URL;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.dom4j.Attribute;

import org.dom4j.Document;

import org.dom4j.Element;

import org.dom4j.io.SAXReader;

import chen.domain.House;

public class RssReader {

public List<House> parse(HttpServletRequest request) {
  List<House> list = new ArrayList<House>();
  try {
   URL url = Thread.currentThread().getContextClassLoader()
     .getResource("");


   SAXReader saxReader = new SAXReader();
   Document document = saxReader.read(url+"/"+"util"+"/"+"southampton.xml");
   Element channel = (Element) document.getRootElement().element(
     "channel");

   for (Iterator i = channel.elementIterator("item"); i.hasNext();) {
    House house = new House();
    Element element = (Element) i.next();
    String title = element.elementText("title");

    String postCode = "";
    String price = "";
    int j = title.indexOf("SO");
    int k = title.lastIndexOf("£");
    int l = title.lastIndexOf("pw");
    if (j > 0 && k > 0) {
     postCode = title.substring(j, j + 4);
     price = title.substring(k, l);
     String link = element.elementText("link");
     String pubDate = element.elementText("pubDate");
     house.setPostCode(postCode);
     house.setPrice(price);
     house.setPubDate(pubDate);
     house.setTitle(title);
     house.setUrl(link);
     list.add(house);
    }
   }
  }