我必须为大学制作考勤应用程序。该应用程序将从大学网站获取数据，并根据用户登录名和密码在应用程序上显示。
当我们登录大学的网站时，我们必须将package ftclient;
public class Ftclientmini {
private Socket echoSocket;
private ServerSocket servSocket;
private Socket dataSocket;
PrintWriter out;
BufferedReader in;
PrintWriter dataOut;
BufferedReader dataIn;
/**
* @param args the command line arguments
*/
public static void main(String[] args) throws IOException {
String hostName = args[0];
int portNumber = Integer.parseInt(args[1]);
String filename = ""; int datanum = 0;
String command = args[2];
if (command.equals("-l")){
if (args.length != 4)
System.err.println("Usage: java EchoClient <host name> "
+ "<port number> <command> <dataport>");
datanum = Integer.parseInt(args[3]);
}
Ftclientmini one = new Ftclientmini();
one.startControl(hostName, portNumber);
System.out.println("have set up the control connection\n");
one.sendCommand(command, filename, hostName, datanum);
String servResponse = one.in.readLine();
if (servResponse != null){
System.out.println(servResponse);
if (servResponse.equals("invalid command"))
System.exit(0);
else{
//byte[] myarray = new byte[1024];
String bytesRead; String[] retVal;
one.startData(datanum);
if (command.equals("-l")){
while ((bytesRead = one.dataIn.readLine()) != null){
//bytesRead = one.dataIn.readLine();
retVal = bytesRead.split(",");
for (String temp: retVal){
System.out.println(temp);
}
}
}
}
}
one.servSocket.close();
one.dataSocket.close();
one.echoSocket.close();
System.exit(0);
}
void startControl(String name, int number){
try {
echoSocket = new Socket(name, number);
out = new PrintWriter(
echoSocket.getOutputStream(), true);
in = new BufferedReader(
new InputStreamReader(echoSocket.getInputStream()));
}
catch (IOException e)
{
System.err.println("Couldn't get IO for connection to" + name);
e.printStackTrace();
}
}
void sendCommand(String command, String filename, String host, int datanum){
String stringData = Integer.toString(datanum);
if (command.equals("-l")){
command = command.concat("#" + host + "#" + stringData +"#");
System.out.println("sending: " + command);
out.println(command);
}
else {
command = command.concat("#" + host + "#" + stringData + "#" + filename + "#");
System.out.println("sending: " + command);
out.println(command);
}
System.out.println("finished sending command");
}
void startData(int datanum){
try {
servSocket = new ServerSocket(datanum);
//servSocket.setSoTimeout(10000);
System.out.println("wait for a client");
dataSocket = servSocket.accept();
System.out.println("ftclient.java has been accepted");
dataOut = new PrintWriter(
dataSocket.getOutputStream(), true);
dataIn = new BufferedReader(
new InputStreamReader(dataSocket.getInputStream()));
}
catch (IOException e)
{
System.err.println("Couldn't get IO for connection");
e.printStackTrace();
}
}
}
和id放在我的应用上，这样我就可以在应用中看到它。
我搜索了password，httpurlconnection，httpget，httppost。
到目前为止，我已经明白我需要jsoup加载学院的考勤网站，然后httprequest发布用户名和密码，然后httppost抓取数据来自HTML页面。
但我看过教程只是为了请求JSON页面，但是如何请求HTML页面？并登录到它？
以下是我尝试从JSON
收集数据的内容jsoup答案 0 :(得分：0)
String mLoadURL="http://www.google.com";
public class LoadHtml extends AsyncTask<String, String, String> {
@Override
protected String doInBackground(String... params) {
URL url = null;
try {
url = new URL(mLoadURL);
StringBuilder stringBuilder = new StringBuilder();
URLConnection conn = url.openConnection();
// Get the response
BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line = "";
while ((line = rd.readLine()) != null) {
stringBuilder.append(line);
}
return stringBuilder.toString();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return "";
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
if (!s.trim().isEmpty()) {
//load html to webview
}
}
}
使用以下方法调用AsyncTask：
LoadHtml loadHtml= new LoadHtml();
load.execute();