Android在Java获取组件,在Java中解析HTML以获取Android应用
小編典典
這是我要怎么做：
StringBuffer text = new StringBuffer();
HttpURLConnection conn = null;
InputStreamReader in = null;
BufferedReader buff = null;
try {
URL page = new URL(
"http://example.com/");
// URLEncoder.encode(someparameter); use when passing params that may contain symbols or spaces use URLEncoder to encode it and conver space to %20...etc other wise you will get a 404
conn = (HttpURLConnection) page.openConnection();
conn.connect();
/* use this if you need to
int responseCode = conn.getResponseCode();
if (responseCode == 401 || responseCode == 403) {
// Authorization Error
Log.e(tag, "Authorization Error");
throw new Exception("Authorization Error");
}
if (responseCode >= 500 && responseCode <= 504) {
// Server Error
Log.e(tag, "Internal Server Error");
throw new Exception("Internal Server Error");
}*/
in = new InputStreamReader((InputStream) conn.getContent());
buff = new BufferedReader(in);
String line = "anything";
while (line != null) {
line = buff.readLine();
String found = interpretHtml(line);
if(null != found)
return found; // comment the previous 2 lines and this one if u need to load the whole html document.
text.append(line + "\n");
}
} catch (Exception e) {
Log.e(Standards.tag,
"Exception while getting html from website, exception: "
+ e.toString() + ", cause: " + e.getCause()
+ ", message: " + e.getMessage());
} finally {
if (null != buff) {
try {
buff.close();
} catch (IOException e1) {
}
buff = null;
}
if (null != in) {
try {
in.close();
} catch (IOException e1) {
}
in = null;
}
if (null != conn) {
conn.disconnect();
conn = null;
}
}
if (text.toString().length() > 0) {
return interpretHtml(text.toString()); // use this if you don't need to load the whole page.
} else return null;
}
private String interpretHtml(String s){
if(s.startsWidth("
return s.substring(22, s.length() - 10);
}
return null;
}
2020-10-15
總結
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