滁州学院首页获取新闻列表

尝试使用Jsoup将网页的内容获取并解析出来，有关jsoup的解析请点这，点我

新闻获取之后就是使用数据适配器将新闻列显示在android客户端上，效果图为

下拉刷新和加载更多使用的是开源框架XListView。

NewsDetail;

package com.example.bean;

public class NewsDetail {
	
	/**
	 * 标题
	 */
	private String title;
	
	/**
	 * 作者
	 */
	private String author;
	
	/**
	 * 发布日期
	 */
	private String pDate;
	
	/**
	 * 浏览次数
	 */
	private int amount;
	
	/**
	 * 链接地址
	 */
	private String link;
	
	/**
	 * 图片链接
	 */
	private String imageLink;

	public String getTitle() {
		return title;
	}

	public void setTitle(String title) {
		this.title = title;
	}

	public String getAuthor() {
		return author;
	}

	public void setAuthor(String author) {
		this.author = author;
	}

	public String getpDate() {
		return pDate;
	}

	public void setpDate(String pDate) {
		this.pDate = pDate;
	}

	public int getAmount() {
		return amount;
	}

	public void setAmount(int amount) {
		this.amount = amount;
	}

	public String getLink() {
		return link;
	}

	public void setLink(String link) {
		this.link = link;
	}

	public String getImageLink() {
		return imageLink;
	}

	public void setImageLink(String imageLink) {
		this.imageLink = imageLink;
	}
	
}

链接URL工具类ConnectUtil

package com.example.util;

import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class ConnectUtil {
	/**
	 * @param urlStr
	 * @return
	 * @throws Exception
	 */
	public static String doGet(String urlStr) throws Exception  
    {  
        StringBuffer sb = new StringBuffer();  
        try  
        {  
            URL url = new URL(urlStr);  
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();  
            conn.setRequestMethod("GET");  
            conn.setConnectTimeout(5000);  
            conn.setDoInput(true);  
            conn.setDoOutput(true);  
  
            if (conn.getResponseCode() == 200)  
            {  
                InputStream is = conn.getInputStream();
                InputStreamReader isr = new InputStreamReader(is,"UTF-8");  //注意这一点，容易出现中文乱码
                int len = 0;  
                char[] buf = new char[1024];  
  
                while ((len = isr.read(buf)) != -1)  
                {  
                    sb.append(new String(buf, 0, len));  
                }  
  
                is.close();  
                isr.close();  
            } else  
            {  
                throw new Exception("访问网络失败！");  
            }  
  
        } catch (Exception e)  
        {  
            throw new Exception("访问网络失败！");  
        }  
        return sb.toString();  
    }  
}

新闻类型链接处理：

public interface URLDetail {
	public static final int NEWS_LIST_WYYW = 1;
	public static final int NEWS_LIST_YBDT = 2;
	public static final int NEWS_LIST_TZGG = 3;
	public static final int NEWS_LIST_JKYXX = 4;
}

package com.example.util;

public class URLUtil {
	/**
	 * 蔚园要问
	 * 院部动态
	 * 通知公告
	 * 教科研信息
	 */
	public static final String NEWS_LIST_WYYW = "http://www.chzu.edu.cn/s/1/t/1152/p/2/list.htm";
	public static final String NEWS_LIST_YBDT = "http://www.chzu.edu.cn/s/1/t/1152/p/3/list.htm";
	public static final String NEWS_LIST_TZGG = "http://www.chzu.edu.cn/s/1/t/1152/p/4/list.htm";
	public static final String NEWS_LIST_JKYXX = "http://www.chzu.edu.cn/s/1/t/1152/p/5/list.htm";
	
	public static String gengrateURL(int newsType){
		String urlStr = "";
		switch (newsType)
		{
		case URLDetail.NEWS_LIST_WYYW:
			urlStr = NEWS_LIST_WYYW;
			break;
		case URLDetail.NEWS_LIST_YBDT:
			urlStr = NEWS_LIST_YBDT;
			break;
		case URLDetail.NEWS_LIST_TZGG:
			urlStr = NEWS_LIST_TZGG;
			break;
		case URLDetail.NEWS_LIST_JKYXX:
			urlStr = NEWS_LIST_JKYXX;
			break;
		default:
			urlStr = NEWS_LIST_WYYW;
			break;
		}
		return urlStr;
	}
}

网页解析，得到新闻列表List，NewsDetailUtil

package com.example.util;

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

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

import com.example.bean.NewsDetail;

public class NewsDetailUtil {
	
	
	public List<NewsDetail> getNewsList(int newsType) throws Exception{
		
		String html = ConnectUtil.doGet(URLUtil.gengrateURL(newsType));
		Document doc = Jsoup.parse(html, "UTF-8");
		List<NewsDetail> list = new ArrayList<NewsDetail>();
		NewsDetail newsDetail = null;
		Elements ListDiv = doc.getElementsByClass("columnStyle");
		
		for(int i=0;i<ListDiv.size();i++){
			newsDetail = new NewsDetail();
			Element column_ele = ListDiv.get(i);
			Element td_ele = column_ele.getElementsByTag("a").get(0);
			newsDetail.setTitle(td_ele.text().trim());
			newsDetail.setLink("http://www.chzu.edu.cn"+td_ele.attr("href"));
			Element time_ele = column_ele.getElementsByClass("postTime").get(0);
			newsDetail.setpDate(time_ele.text());
			list.add(newsDetail);
		}
		return list;
	}
}

Apdate

package com.example.adapter;

import java.util.List;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import com.example.bean.NewsDetail;
import com.example.getnews.R;

public class NewsAdapter extends BaseAdapter {

	private LayoutInflater mInflater;
	private List<NewsDetail> mDatas;
	
	public NewsAdapter(Context context, List<NewsDetail> datas){
		this.mDatas = datas;
		mInflater = LayoutInflater.from(context);
		
	}
	
	public void addAll(List<NewsDetail> mDatas){
		this.mDatas.addAll(mDatas);
	}
	
	@Override
	public int getCount() {
		return mDatas.size();
	}

	@Override
	public Object getItem(int position) {
		return mDatas.get(position);
	}

	@Override
	public long getItemId(int position) {
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		ViewHolder holder = null;
		if(convertView == null){
			convertView = mInflater.inflate(R.layout.news_item_temp, null);
			holder = new ViewHolder();
			
			holder.mTitle = (TextView) convertView.findViewById(R.id.id_title);
			holder.mContent = (TextView) convertView.findViewById(R.id.id_url);
			convertView.setTag(holder);
		}else{
			holder = (ViewHolder)convertView.getTag();
		}
		NewsDetail newsDetail = mDatas.get(position);
		holder.mTitle.setText(newsDetail.getTitle());
		holder.mContent.setText(newsDetail.getLink());
		return convertView;
	}
	
	private final class ViewHolder
	{
		TextView mTitle;
		TextView mContent;
	}

}

界面导航条TabApdate

package com.example.getnews;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

public class TabAdapter extends FragmentPagerAdapter{

	public static final String[] TITLES = new String[] {"蔚园要问","院部动态","通知公告","教科研信息"};
	
	public TabAdapter(FragmentManager fm) {
		super(fm);
	}

	@Override
	public Fragment getItem(int arg0) {
		MainFragment fragment = new MainFragment(arg0+1);
		return fragment;
	}

	@Override
	public int getCount() {
		
		return TITLES.length;
	}

	@Override
	public CharSequence getPageTitle(int position) {
		return TITLES[position % TITLES.length];
	}
	
	
}

数据“填充”

package com.example.getnews;

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

import me.maxwin.view.IXListViewLoadMore;
import me.maxwin.view.IXListViewRefreshListener;
import me.maxwin.view.XListView;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.adapter.NewsAdapter;
import com.example.bean.NewsDetail;
import com.example.util.NewsDetailUtil;
import com.example.util.URLDetail;


public class MainFragment extends Fragment implements IXListViewRefreshListener, IXListViewLoadMore{

	private int newsType = URLDetail.NEWS_LIST_WYYW;
	
	private NewsDetailUtil newsDetailUtil;
	
	private XListView mXListView;
	
	private NewsAdapter mAdapter;
	
	private List<NewsDetail> mDatas = new ArrayList<NewsDetail>();
	
	public MainFragment(int newsType){
		this.newsType = newsType;
		newsDetailUtil = new NewsDetailUtil();
	}
	

	@Override
	public View onCreateView(LayoutInflater inflater,
			ViewGroup container, Bundle savedInstanceState) {
		return inflater.inflate(R.layout.tab_item_fragment_main, null);	}


	@Override
	public void onActivityCreated( Bundle savedInstanceState) {
		super.onActivityCreated(savedInstanceState);
		mAdapter = new NewsAdapter(getActivity(), mDatas);
		
		mXListView = (XListView) getView().findViewById(R.id.id_xlistView);
		mXListView.setAdapter(mAdapter);
		mXListView.setPullRefreshEnable(this);
		mXListView.setPullLoadEnable(this);
		
		mXListView.startRefresh();
	}


	@Override
	public void onLoadMore() {
		
	}

	@Override
	public void onRefresh() {
		new LoadDatasTask().execute();
	}
	
	class LoadDatasTask extends AsyncTask<Void, Void, Void>
	{
		
		@Override
		protected Void doInBackground(Void... params)
		{
			try
			{
				List<NewsDetail> newsDetail = newsDetailUtil.getNewsList(newsType);
				mDatas = newsDetail;
			} catch (Exception e)
			{
				e.printStackTrace();
			}
			return null;
		}
		@Override
		protected void onPostExecute(Void result)
		{
			mAdapter.addAll(mDatas);
			mAdapter.notifyDataSetChanged();
			mXListView.stopRefresh();
		}
	}
	
}

Mainactivity

public class MainActivity extends FragmentActivity {
	
	private TabPageIndicator mIndicator;
	private ViewPager mViewPager;
	private FragmentPagerAdapter mAdapter;
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		mIndicator = (TabPageIndicator) findViewById(R.id.id_indicator);
		mViewPager = (ViewPager) findViewById(R.id.id_pager);
		mAdapter = new TabAdapter(getSupportFragmentManager());
		mViewPager.setAdapter(mAdapter);
		mIndicator.setViewPager(mViewPager, 0);

	}
}

源码下载