HttpClient:

/**
     * 獲取賬號密碼介面的網頁原始碼
     * @return
     */
    private String getAccountPasswordHtml() {
        HttpClient httpClient = new DefaultHttpClient();
        HttpGet httpGet = new HttpGet(mAccountPasswordURL);
        String content = null;
        try {
            HttpResponse httpResponse = httpClient.execute(httpGet);
            if
 
 (200 == httpResponse.getStatusLine().getStatusCode()) {
                content = EntityUtils.toString(httpResponse.getEntity());
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return
 
 content;
    }

HttpURLConnection:

/**
     * 獲取網頁原始碼
     * @return
     */
    private String getHtmlString(String targetUrl) {
        String content = null;

        HttpURLConnection connection = null;
        try {
            URL url = new URL(targetUrl);
            connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("GET"
 
);

            connection.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)");
            connection.setRequestProperty("Accept", "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, */*");
            connection.setRequestProperty("Accept-Language", "zh-cn");
            connection.setRequestProperty("UA-CPU", "x86");
            //為什麼沒有deflate呢
            connection.setRequestProperty("Accept-Encoding", "gzip");
            connection.setRequestProperty("Content-type", "text/html");
            //keep-Alive，有什麼用呢，你不是在訪問網站，你是在採集。嘿嘿。減輕別人的壓力，也是減輕自己。
            connection.setRequestProperty("Connection", "close");
            //不要用cache，用了也沒有什麼用，因為我們不會經常對一個連結頻繁訪問。（針對程式）
            connection.setUseCaches(false);
            connection.setConnectTimeout(6 * 1000);
            connection.setReadTimeout(6 * 1000);
            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.setRequestProperty("Charset", "utf-8");

            connection.connect();

            if (200 == connection.getResponseCode()) {
                InputStream inputStream = null;
                if (!TextUtils.isEmpty(connection.getContentEncoding())) {
                    String encode = connection.getContentEncoding().toLowerCase();
                    if (!TextUtils.isEmpty(encode) && encode.indexOf("gzip") >= 0) {
                        inputStream = new GZIPInputStream(connection.getInputStream());
                    }
                }

                if (null == inputStream) {
                    inputStream = connection.getInputStream();
                }

                BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "gbk"));
                StringBuilder builder = new StringBuilder();
                String line = null;
                while ((line = reader.readLine()) != null) {
                    builder.append(line).append("\n");
                }
                content = builder.toString();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (connection != null) {
                connection.disconnect();
            }
        }

        return content;
    }