Java jsoup在android中获取和显示表内容
我有一个java程序,它从链接中获取表内容。我想在android中也这样做,在文本视图中显示它 下面是我的java代码Java jsoup在android中获取和显示表内容,java,android,html-parsing,jsoup,Java,Android,Html Parsing,Jsoup,我有一个java程序,它从链接中获取表内容。我想在android中也这样做,在文本视图中显示它 下面是我的java代码 public class VtuFetch { public static void main(String[] args) throws Exception { Document doc = Jsoup.connect("http://www.fastvturesults.com/check_new_results/1rn11cs030").
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());
}
}
}
}
下面是我的android代码,它获取相同的链接
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();
}
}
我可以检索此人的姓名,但无法显示表格内容
另外,java代码工作正常,我在将其移植到android时遇到问题这应该设置正确的文本,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();
}
}
发布更多Android活动的代码。LogCat中是否存在异常/堆栈跟踪?您的应用程序是否具有internet权限?警告日志很少,logcat从system.out.PrintLn获取输出。我希望此输出显示在我的textdesc TextView上。是的,我提到了互联网权限。日志cat在这里pastebin.com/phvbsng9。在您的代码中,您没有使用所需的文本设置TextView文本。不是将表的内容打印到System.out.println…,而是将其设置为textview。是的,我知道,如果我尝试将textview设置为print,则会得到一个空白的textview。如果代码部分正确,我将在短时间内发布完整的答案。我将获得输出,但我只能获得html文档的第一行,知道为什么会这样吗?@penta,你需要使用循环将所有文本添加到TextView,现在将更新答案。@penta,Iv'e更新的答案,你需要将所有文本附加到设置为TextView的字符串中。请注意顶部已更改的初始化。此外,您通常应该使用StringBuilder,而不是附加到字符串,尽管这在这里很好。