[英]jsoup fetching and displaying table contents in android
我有一個從獲取表內容的一個java程序此鏈接。 我想通過在textview中顯示它來在android中做同樣的事情。
下面是我的java代碼
public class VtuFetch {
public static void main(String[] args) throws Exception {
Document doc = Jsoup.connect("http://www.fastvturesults.com/check_new_results/1rn11cs030").
userAgent("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.101 Safari/537.36").get();
for (Element table : doc.select("table[id=scell]")) {
for (Element row : table.select("tr:gt(0)")) {
Elements tds = row.select("td:not([rowspan])");
System.out.println("Semester"+" "+"Attempt"+" "+" "+"Total Marks"+" "+" Result"+" "+" Percentage");
System.out.println(tds.get(0).text() + " " + tds.get(1).text()+" "+ tds.get(2).text()+" "+ tds.get(3).text()+" "+ tds.get(4).text());
}
}
}
}
以下是我的android代碼,它提取了相同的鏈接。
private class GetMakrs extends AsyncTask<Void, Void, Void> {
String desc;
Elements tds;
@Override
protected void onPreExecute() {
super.onPreExecute();
mProgressDialog = new ProgressDialog(MainActivity.this);
mProgressDialog.setTitle("Android Basic JSoup Tutorial");
mProgressDialog.setMessage("Loading...");
mProgressDialog.setIndeterminate(false);
mProgressDialog.show();
}
@Override
protected Void doInBackground(Void... params) {
try {
// Connect to the web site
Document doc = Jsoup.connect("http://www.fastvturesults.com/check_new_results/1rn11cs030").
userAgent("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.101 Safari/537.36")
.get();
// Using Elements to get the Meta data
Elements description = doc.select("meta[name=description]");
for (Element table : doc.select("table[id=scell]")) {
for (Element row : table.select("tr:gt(0)")) {
Elements tds = row.select("td:not([rowspan])");
System.out.println("Semester"+" "+"Attempt"+" "+" "+"Total Marks"+" "+" Result"+" "+" Percentage");
System.out.println(tds.get(0).text() + " " + tds.get(1).text()+" "+ tds.get(2).text()+" "+ tds.get(3).text()+" "+ tds.get(4).text());
}
}
// Locate the content attribute
desc = description.attr("content");
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result) {
// Set description into TextView
TextView txtdesc = (TextView) findViewById(R.id.MarksShow);
txtdesc.setText(desc);
mProgressDialog.dismiss();
}
}
我可以檢索此人的名字,但是表格內容沒有顯示。
PS Java代碼工作正常,我在將其移植到Android時遇到問題
這應該設置正確的文本,而不是打印它:
private class GetMakrs extends AsyncTask<Void, Void, Void> {
String desc = ""; //<-Important!
Elements tds;
...
@Override
protected Void doInBackground(Void... params) {
try {
// Connect to the web site
...
Elements description = doc.select("meta[name=description]");
for (Element table : doc.select("table[id=scell]")) {
for (Element row : table.select("tr:gt(0)")) {
Elements tds = row.select("td:not([rowspan])");
desc = desc + "Semester"+" "+"Attempt"+" "+" "+"Total Marks"+" "+" Result"+" "+" Percentage";
desc = desc + "\n" + tds.get(0).text() + " " + tds.get(1).text()+" "+ tds.get(2).text()+" "+tds.get(3).text()+" "+ tds.get(4).text();
desc = desc + "\n";
}
}
...
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result) {
// Set description into TextView
TextView txtdesc = (TextView) findViewById(R.id.MarksShow);
txtdesc.setText(desc);
mProgressDialog.dismiss();
}
}
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