Question

如何在android中为失败者，Gainer＆amp;解析雅虎网站最活跃的给我分享任何想法或示例我的不工作代码如下：

try {
    Document mBlogDocument =  Jsoup.connect("https://sg.finance.yahoo.com/most-active").userAgent("Mozilla/5.0 (Windows; U; WindowsNT 5.1; en-US; rv1.8.1.6) Gecko/20070725 Firefox/2.0.0.6").get();

    // done for etfs   Jsoup.connect("https://in.investing.com/etfs/india-etfs").timeout(10000).userAgent("Mozilla/5.0 (Windows; U; WindowsNT 5.1; en-US; rv1.8.1.6) Gecko/20070725 Firefox/2.0.0.6").get().getElementById("etfs").select("tr").iterator();
    Elements links = mBlogDocument.getElementsByTag("a");
    // Locate the content attribute

} catch (IOException e) {
    e.printStackTrace();
}

Answer 1

我能够从雅虎网站提取数据，所以确保 -

在<uses-permission android:name="android.permission.INTERNET" />

AndroidManifest.xml

Jsoup操作在后台线程

中

@Override
protected void onCreate(Bundle savedInstanceState) {
// ....
    new MyTask().execute();
}


private class MyTask extends AsyncTask<Void, Void, String> {

    @Override
    protected String doInBackground(Void... params) {
        String title = "";

        try {
            Document mBlogDocument = Jsoup.connect("https://sg.finance.yahoo.com/most-active").userAgent("Mozilla/5.0 (Windows; U; WindowsNT 5.1; en-US; rv1.8.1.6) Gecko/20070725 Firefox/2.0.0.6").get();
            Elements links = mBlogDocument.getElementsByTag("a");
            title = mBlogDocument.title();
            for (Element l: links) {
                Log.d("log","Element <a>: " + l);
            }
            return title;
        } catch (IOException e) {
            e.printStackTrace();
        }

        return title;
    }


    @Override
    protected void onPostExecute (String result){
        // perform UI stuff
        // ((TextView)findViewById (R.id.textview)).setText (result);
    }
}

以下是提取匹配股票数据单元格的代码

private class MyTask extends AsyncTask<Void, Void, String> {

    @Override
    protected String doInBackground(Void... params) {
        String title = "";
        String Symbol = "";
        String Name = "";
        String Price = "";
        String Change = "";
        String Change_percentage = "";
        String Volume = "";
        String Avg_Volume = "";
        String Market_cap = "";
        String PE_ratio = "";

        try {


            Document mBlogDocument = Jsoup.connect("https://sg.finance.yahoo.com/most-active").userAgent("Mozilla/5.0 (Windows; U; WindowsNT 5.1; en-US; rv1.8.1.6) Gecko/20070725 Firefox/2.0.0.6").get();
            Elements tbody_table = mBlogDocument.select("tbody[data-reactid$=73]");
            Log.d("log", "tbody_table size: " + tbody_table.size());

            title = mBlogDocument.title();
            System.out.print(title);

            Elements Stocks = tbody_table.select("tr");
            for (Element Stock : Stocks) {
                Elements Stock_item = Stock.select("td");
                Symbol = Stock_item.get(1).text();
                Name = Stock_item.get(2).text();
                Price = Stock_item.get(3).text();
                Change = Stock_item.get(4).text();
                Change_percentage = Stock_item.get(5).text();
                Volume = Stock_item.get(6).text();
                Avg_Volume = Stock_item.get(7).text();
                Market_cap = Stock_item.get(8).text();
                PE_ratio = Stock_item.get(9).text();

                Log.d("log","Symbol: " + Symbol);
                Log.d("log","Name: " + Name);
                Log.d("log","Price: " + Price);
                Log.d("log","Change: " + Change);
                Log.d("log","Change_percentage: " + Change_percentage);
                Log.d("log","Volume: " + Volume);
                Log.d("log","Avg_Volume: " + Avg_Volume);
                Log.d("log","Market_cap: " + Market_cap);
                Log.d("log","PE_ratio: " + PE_ratio);
            }


            return title;
        } catch (IOException e) {
            e.printStackTrace();
        }

        return title;
    }


    @Override
    protected void onPostExecute(String result) {
        //if you had a ui element, you could display the title
        //   ((TextView)findViewById (R.id.myTextView)).setText (result);
    }
}

请记住，有1114个匹配股票结果，由于某些保护（https://sg.finance.yahoo.com/most-active?offset=0&count=250），我所能得到的是每个URL 250条记录。因此，如果要检索所有匹配股票，您可以对以下网址进行一些循环：

https://sg.finance.yahoo.com/most-active?offset=0&count=250 https://sg.finance.yahoo.com/most-active?offset=250&count=250 https://sg.finance.yahoo.com/most-active?offset=500&count=250 https://sg.finance.yahoo.com/most-active?offset=750&count=250 https://sg.finance.yahoo.com/most-active?offset=1000&count=114

如何解析android中的Yahoo网站数据

1 个答案: