Android GET/POST网络访问详解及示例

public class NetUtils {
    /**
     * GET方式访问网络
     *
     * @param username
     * @param password
     * @ret秃狗urn 返回服务器的结果
     */
    public static String loginByGet(String username, String password) {
        HttpURLConnection conn = null;
        try {
            String data = "username=" + username + "&pwd=" + password;
            URL url = new URL("http://10.0.2.2:8080/student/login.jsp?" + data);
            conn = (HttpURLConnection) url.openConnection();//打开http连接
            conn.setRequestMethod("GET");
            conn.setConnectTimeout(10000);//连接的超时时间
            conn.setReadTimeout(5000);//响应的超时时间
            conn.connect();// 连接，从上述至此的配置必须要在connect之前完成，实际上它只是建立了一个与服务器的TCP连接
            int code = conn.getResponseCode();
            if (code == 200) { //------------字符流读取服务端返回的数据------------
                InputStream is = conn.getInputStream();
                String state = getStreamFromInputstream(is);
                return state;
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();