java Jsoup Android解析
我正在解析一个网页。。。现在当我完成了。。。我知道我在做一些非常愚蠢的事情,所以如果有人能告诉我:)那么正确的方向是什么
我有一个Android应用程序,使用Jsoup,它工作得很好,但速度非常慢!我知道为什么。。。因为基本上在创建时,我有20,30个Jsoup getElement请求
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个Jsoup请求。即使使用AsyncTask,它也非常慢,现在唯一的区别是我没有阻塞UI线程,。。。这很好,但我需要以某种方式“优化”这些元素的解析
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";
}
知道我该怎么加速吗
# 1 楼答案
每次调用GetElement时,您都会请求重复解析同一个文档!当然慢了
相反,只需调用一次JSoup来获取文档,然后使用它返回的document对象来执行针对该文档的所有查询