Android：SNS客户端开发二：获取授权账号资料

????? 在上一篇文章中，大致介绍了基于新浪微博开放平台的OAuth认证方法及相关实现。那么在用户成功授权，取到相应的AccessToken以及Access_secret后，我们就可以利用这两个值通过新浪提供的对应API，去获取用户资料了。

???? 这里我们需要用到Http请求相关的内容。获取用户资料是采用的Get方法，此处只放出Get方法的相应代码。使用HttpClient开源项目，该项目已经被Android包含无需单独引入jar包。

??? 在获取用户资料时。通过Get方法传递的单数都要统一经过UTF-8编码，并且与OAuth认证相关的参数一起签名后再发送到服务器。废话不多说，先看Get方法的代码。

public class WeiBoClient {private OAuthConsumer consumer;public WeiBoClient() {}public WeiBoClient(String consumerKey, String consumerSecret,String oauthToken, String oauthTokenSecret) {// 生成一个OAuthConsumer对象consumer = new CommonsHttpOAuthConsumer(consumerKey, consumerSecret);// 设置OAuth_Token和OAuth_Token_Secretconsumer.setTokenWithSecret(oauthToken, oauthTokenSecret);}public String doGet(String url, List<NameValuePair> addtionalParams) throws ClientProtocolException, IOException, OAuthMessageSignerException, OAuthExpectationFailedException, OAuthCommunicationException {String result = null;url = buildUrlByQueryAndBaseUrl(url, addtionalParams);String signedUrl = null;System.out.println("签名之前的URL--->" + url);signedUrl = consumer.sign(url);System.out.println("签名之后的URL--->" + signedUrl);HttpGet getRequest = new HttpGet(signedUrl);HttpClient httpClient = new DefaultHttpClient();HttpResponse response = null;response = httpClient.execute(getRequest);result = parseStringFromEntity(response.getEntity());return result;}public String buildUrlByQueryAndBaseUrl(String url,List<NameValuePair> pairs){      String queryStr = URLEncodedUtils.format(pairs, "UTF-8");      return url + "?" + queryStr;}public String parseStringFromEntity(HttpEntity entity){String result = null;try {InputStream input = entity.getContent();BufferedReader reader = new BufferedReader(new InputStreamReader(input));String line = null;StringBuffer sb = new StringBuffer();while ((line = reader.readLine()) != null) {sb.append(line);}result = sb.toString();} catch (Exception e) {System.out.println(e);}return result;}}

?再在外部Activity中调用相应的方法就能获取到账号的资料了

public void getUser(String access_token, String access_secret,String user_id) throws ClientProtocolException, OAuthMessageSignerException, OAuthExpectationFailedException, OAuthCommunicationException, IOException {// 添加用户List<NameValuePair> params = new ArrayList<NameValuePair>();BasicNameValuePair user_id = new BasicNameValuePair("user_id", user_id);params.add(user_id);WeiBoClient weibo = new WeiBoClient(SinaConstant.CONSUMER_KEY,SinaConstant.CONSUMER_SECRET, access_token, access_secret);keyValues.put("user_id", user_id);String userInfo;userInfo = weibo.doGet("http://api.t.sina.com.cn/users/show.json", params);System.out.println(userInfo);JSONObject user = null;try {//对获取到资料信息进行JSON解析user = new JSONObject(userInfo);String headUrl = user.getString("profile_image_url");System.out.println(headUrl);String screen_name = user.getString("screen_name");String name = user.getString("name");System.out.println(screen_name + "&&&" + name);} catch (Exception e) {e.printStackTrace();}// return null;}

?以上代码中的user_id为上一篇文章中我们获取到的对应的用户id。传入参数请参考新浪微博开放平台的API文档，地址如下：http://open.weibo.com/wiki/Users/show

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注:我这里对所有方法的异常处理均为抛出，直到最顶层调用该方法时再捕捉