[英]Jsoup Android parsing
我正在解析一個網頁...現在完成后...我看到我正在做一件非常愚蠢的事情,所以如果有人可以向我指出這一點:)正確的方向是什么。
我有一個使用Jsoup的Android應用程序,它運行良好,但運行速度非常慢! 我知道原因...因為基本上onCreate我有20,30個Jsoup getElement請求...
private class Task extends AsyncTask<Void, Void, Void>{
String linkText;
@Override
protected Void doInBackground(Void... params) {
Initdata();
return null;
}
@Override
protected void onPostExecute(Void param) {
mProgressBarHandler.hide();
redraw();
inflatedView.invalidate();
}
@Override
protected void onPreExecute() {
super.onPreExecute();
mProgressBarHandler.show();
}
}
在Initdata()方法中,我有20-30個Jsoup請求。 即使使用AsyncTask,它也非常慢,現在唯一的區別是,我沒有阻塞UI線程,這很不錯,但是我需要以某種方式“優化”該元素的解析。
private void Initdata(){
loadImages();
players = new String[] {util.GetElement("div.item-2:first-child", "http://www.istinomer.rs/", 0),
util.GetElement("div.item-2:nth-child(2)", "http://www.istinomer.rs/", 0),
util.GetElement("div.item-2:nth-child(3)", "http://www.istinomer.rs/", 0),
util.GetElement("div.item-2:nth-child(4)","http://www.istinomer.rs/",0),
util.GetElement("div.item-2:nth-child(5)","http://www.istinomer.rs/",0),
util.GetElement("div.item-2:nth-child(6)","http://www.istinomer.rs/",0),
util.GetElement("div.item-2:nth-child(7)","http://www.istinomer.rs/",0),
util.GetElement("div.item-2:nth-child(8)","http://www.istinomer.rs/",0),
util.GetElement("div.item-2:nth-child(9)","http://www.istinomer.rs/",0),
util.GetElement("div.item-2:nth-child(10)","http://www.istinomer.rs/",0)
};
vestiDescription1 = util.GetElement("div.item-big h2", "http://www.istinomer.rs/", 0) + System.getProperty("line.separator")
+ util.GetElement("div.item-big h3","http://www.istinomer.rs/",0);
vestiDescription2 = util.GetElement("div.grid-8 h2 a", "http://www.istinomer.rs/", 0) + System.getProperty("line.separator")
+ util.GetElement2("div.grid-8 h3","http://www.istinomer.rs/",0);
vestiDescription3 = util.GetElement(
"div.gd-container-1:nth-child(6) > div:nth-child(4) > div:nth-child(1) > div:nth-child(4) > div:nth-child(2) > h3:nth-child(2)", "http://www.istinomer.rs/", 0);
vestiDescription4 = util.GetElement(
"div.gd-container-1:nth-child(6) > div:nth-child(4) > div:nth-child(1) > div:nth-child(5) > div:nth-child(2) > h3:nth-child(2)", "http://www.istinomer.rs/", 0);
vestiDescription5 = util.GetElement(
"div.gd-container-1:nth-child(6) > div:nth-child(4) > div:nth-child(1) > div:nth-child(6) > div:nth-child(2) > h3:nth-child(2)", "http://www.istinomer.rs/", 0);
vestiDescription6 = util.GetElement(
"div.gd-container-1:nth-child(6) > div:nth-child(5) > div:nth-child(1) > div:nth-child(2) > h2:nth-child(4)", "http://www.istinomer.rs/", 0) + System.getProperty("line.separator")
+ util.GetElement2("div.gd-container-1:nth-child(6) > div:nth-child(5) > div:nth-child(1) > div:nth-child(2) > h3:nth-child(5)","http://www.istinomer.rs/",0);
vestiDescription7 = util.GetElement(
"div.gd-container-1:nth-child(6) > div:nth-child(5) > div:nth-child(1) > div:nth-child(3) > div:nth-child(2) > h3:nth-child(2)", "http://www.istinomer.rs/", 0);
vestiDescription8 = util.GetElement(
"div.gd-container-1:nth-child(6) > div:nth-child(5) > div:nth-child(1) > div:nth-child(4) > div:nth-child(2) > h3:nth-child(2)", "http://www.istinomer.rs/", 0);
vestiDescription9 = util.GetElement(
"div.gd-container-1:nth-child(6) > div:nth-child(5) > div:nth-child(1) > div:nth-child(5) > div:nth-child(2) > h3:nth-child(2)", "http://www.istinomer.rs/", 0);
vestiDescription10 = util.GetElement(
"div.gd-container-1:nth-child(6) > div:nth-child(5) > div:nth-child(1) > div:nth-child(6) > div:nth-child(2) > h3:nth-child(2)", "http://www.istinomer.rs/", 0);
currency = new String[]{
vestiDescription1,
vestiDescription2,
vestiDescription3,
vestiDescription4,
vestiDescription5,
vestiDescription6,
vestiDescription7,
vestiDescription8,
vestiDescription9,
vestiDescription10
};
public String GetElement(String Element, String site, int mode) {
try {
Elements newsHeadlines = null;
if (mode == 0) {
Document doc = Jsoup.connect(site).timeout(600000).get();
newsHeadlines = doc.select(Element);
}
//1 gets link from class
else if (mode == 1) {
Document doc = Jsoup.connect(site).timeout(600000).get();
String link = doc.select(Element).toString();
return link;
}
//Log.d("TMS", "Data is " + html2text(newsHeadlines.toString()));
String returnData = html2text(newsHeadlines.toString());
return returnData;
}
catch (Exception e) {
Log.d("TMS", "EXCEPTION GetElement: " + Element);
e.printStackTrace();
return "Error";
}
知道如何加快速度嗎?
您要求在每次調用GetElement時重復分析同一文檔! 當然慢了!
而是,對JSoup進行一次調用以獲取文檔,然后對所有針對該文檔的查詢使用它返回的Document對象。
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