无法用简单的例子JSOUP解析网站数据表 [英] Unable to Use Simple JSOUP Example To Parse Website Table Data

问题描述

我试图从使用Android / JSOUP但是我有一点麻烦钉在下跌过程中一个表中提取以下数据。我想我越来越接近能够使用这个我下面提供的code做的 - 但由于某些原因，我还是不能让我的TextView显示任何表数据

P.S。

直播网址可在必要时提供。

来源：

 公共类MainActivity延伸活动{TextView的电视;
最终字符串URL =htt​​p://exampleurl.com;@覆盖
公共无效的onCreate（捆绑savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.activity_main）;    电视=（的TextView）findViewById（R.id.TextView01）;
    新MyTask（）执行（URL）;
}私有类MyTask扩展的AsyncTask＆LT;弦乐，太虚，字符串＆GT; {
    ProgressDialog PROG;
    字符串title =;    @覆盖
    在preExecute保护无效（）{
        PROG =新ProgressDialog（MainActivity.this）;
        prog.setMessage（加载......）;
        prog.show（）;
    }    @覆盖
    保护字符串doInBackground（字符串... PARAMS）{
        尝试{
            。文档的DOC = Jsoup.connect（PARAMS [0]）获得（）;
            元素tableElement = doc.getElementsByClass（数据网格）
                    。第一（）;
            标题= doc.title（）;
        }赶上（IOException异常五）{
            e.printStackTrace（）;
        }
        返回称号;
    }    @覆盖
    保护无效onPostExecute（字符串结果）{
        super.onPostExecute（结果）;
        prog.dismiss（）;
        tv.setText（结果）;
    }
}
}
 

TABLE：

 ＆LT;表类=数据网格＆GT;
        ＆LT;＆TBODY GT;＆LT; TR＆GT;
            ＆LT;第i产品编号：LT; /第i
            ＆LT;第i个姓名和LT; /第i
            ＆LT;第i性别和LT; /第i
            ＆LT;第i个位置和LT; /第i
        ＆LT; / TR＆GT;            ＆所述; TR＆GT;
                ＆所述; TD＆GT;＆下;一个href=\"redirector.cfm?ID=a33660a3-aae0-45e3-9703-d59d77717836&page=1&&lname=&fname=\"标题=501207593＆GT; 501207593＆安培; NBSP;＆LT; / A＆GT;＆LT; / TD＆GT;
                ＆LT; TD＆GT;＆USER1 LT; / TD＆GT;
                ＆LT; TD＆GT; M＆安培; NBSP;＆LT; / TD＆GT;
                ＆LT; TD＆GT;＆不明LT; / TD＆GT;
            ＆LT; / TR＆GT;            ＆所述; TR＆GT;
                ＆所述; TD＆GT;＆下;一个href=\"redirector.cfm?ID=edf524da-8598-450f-9373-da87db8d6c84&page=1&&lname=&fname=\"标题=501302750＆GT; 501302750＆安培; NBSP;＆LT; / A＆GT;＆LT; / TD＆GT;
                ＆LT; TD＆GT;＆USER2 LT; / TD＆GT;
                ＆LT; TD＆GT; M＆安培; NBSP;＆LT; / TD＆GT;
                ＆LT; TD＆GT;＆不明LT; / TD＆GT;
            ＆LT; / TR＆GT;            ＆所述; TR＆GT;
                ＆所述; TD＆GT;＆下;一个href=\"redirector.cfm?ID=a78abeea-7651-4ac1-bba2-0dcb272c8b77&page=1&&lname=&fname=\"标题=531201804＆GT; 531201804＆安培; NBSP;＆LT; / A＆GT;＆LT; / TD＆GT;
                ＆LT; TD＆GT;＆USER3 LT; / TD＆GT;
                ＆LT; TD＆GT; M＆安培; NBSP;＆LT; / TD＆GT;
                ＆LT; TD＆GT;＆不明LT; / TD＆GT;
            ＆LT; / TR＆GT;    ＆LT; / TBODY＆GT;＆LT; /表＆gt;
 

解决方案

我觉得这行

 元素TH = doc.select（TR）第一。
 

代替应写成

 元素TH = doc.select（TR）第一（）;
 

I'm attempting to extract the following data from a table via Android / JSOUP however I'm having a bit of trouble nailing down the process. I think I'm getting close to being able to do this using the code I've provided below - but for some reason I still cannot get my textview to display any of the table data.

P.S.

Live URL's can be provided if necessary.

SOURCE:

public class MainActivity extends Activity {

TextView tv;
final String URL = "http://exampleurl.com";

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    tv = (TextView) findViewById(R.id.TextView01);
    new MyTask().execute(URL);
}

private class MyTask extends AsyncTask<String, Void, String> {
    ProgressDialog prog;
    String title = "";

    @Override
    protected void onPreExecute() {
        prog = new ProgressDialog(MainActivity.this);
        prog.setMessage("Loading....");
        prog.show();
    }

    @Override
    protected String doInBackground(String... params) {
        try {
            Document doc = Jsoup.connect(params[0]).get();
            Element tableElement = doc.getElementsByClass("datagrid")
                    .first();
            title = doc.title();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return title;
    }

    @Override
    protected void onPostExecute(String result) {
        super.onPostExecute(result);
        prog.dismiss();
        tv.setText(result);
    }
}
}

TABLE:

<table class="datagrid">
        <tbody><tr>
            <th>Item No.</th>
            <th>Name</th>
            <th>Sex</th>
            <th>Location</th>
        </tr>

            <tr>
                <td><a href="redirector.cfm?ID=a33660a3-aae0-45e3-9703-d59d77717836&amp;page=1&amp;&amp;lname=&amp;fname=" title="501207593">501207593&nbsp;</a></td>
                <td>USER1</td>
                <td>M&nbsp;</td>
                <td>Unknown</td>
            </tr>

            <tr>
                <td><a href="redirector.cfm?ID=edf524da-8598-450f-9373-da87db8d6c84&amp;page=1&amp;&amp;lname=&amp;fname=" title="501302750">501302750&nbsp;</a></td>
                <td>USER2</td>
                <td>M&nbsp;</td>
                <td>Unknown</td>
            </tr>

            <tr>
                <td><a href="redirector.cfm?ID=a78abeea-7651-4ac1-bba2-0dcb272c8b77&amp;page=1&amp;&amp;lname=&amp;fname=" title="531201804">531201804&nbsp;</a></td>
                <td>USER3</td>
                <td>M&nbsp;</td>
                <td>Unknown</td>
            </tr>

    </tbody></table>

解决方案

I think that this line

Element th = doc.select("tr").first;

instead it should be written as

Element th = doc.select("tr").first(); 

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