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我想从45页中读取完全相同的内容(除了读取当然的部分)并将它们写入行列表的列表中。Java - BufferedReader不从URL中读取
我写了这个代码至今:
public static ArrayList<ArrayList<String>> linesWeNeed(){
ArrayList<ArrayList<String>> returnListList = new ArrayList<ArrayList<String>>();
for(int i = 1; i<=45; i++){
int pageNum=(i*20)-20;
System.out.println("PageNum"+pageNum);
URL url=null;
try {
url = new URL("http://tq.mot.gov.il/index.php?option=com_moofaq&iotype=w&view=category&lang_ovrrde=ENG&id=3&Itemid=29&limitstart="+pageNum);
} catch (MalformedURLException e) {
System.out.println("Oh uh!");
}
BufferedReader in = null;
try {
in = new BufferedReader(new InputStreamReader(url.openStream(), "UTF-8"));
} catch (IOException e) {
System.out.println("FATAL ERROR");
e.printStackTrace();
}
ArrayList<String> lineCodes = new ArrayList<String>();
ArrayList<String> linesWeNeed = new ArrayList<String>();
String line;
try {
readLines:
while((line=in.readLine())!=null){
if(line.contains("</tr></table></div></div></li></ul></div></div><br /></div>")){
break readLines;
}
lineCodes.add(line);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
for(int o = 1; o>=lineCodes.size(); o++){
String readLine = lineCodes.get(o-1);
if(o>=297){
linesWeNeed.add(readLine);
}
}
returnListList.add(linesWeNeed);
}
return returnListList;
}
有没有错误,但由于某些原因ArrayList中每个列表的方法的返回是空的。为什么?
提前致谢!
谢谢,有时我可以真的很愚蠢。 :P – NonameSL