通过HttpURLConnection获取SESSIONID

packagetest;importjava.io.BufferedReader;importjava.io.IOException;importjava.io.InputStream;importjava.io.InputStreamReader;importjava.io.OutputStream;importjava.net.HttpURLConnection;importjava.net.MalformedURLException;importjava.net.URL;importjava.util.List;importjava.util.Map;publicclassHttpTest{pr