星迹—iStar的博客

/**
 * 人人网授权页面
 * @author iStar
 *
 */
public class RenrenAuthActivity extends Activity {
	private WebView webView;
	private String accessToken = null;
	private SharedData share;
	String authUrl = "https://graph.renren.com/oauth/authorize?client_id="
		+ GlobalData.RENREN_KEY+"&response_type=token"
		+ "&redirect_uri=http://graph.renren.com/oauth/login_success.html&display=mobile"
		+ "&scope=status_update photo_upload";

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_oauth);
		share = new SharedData(this);
		webView = (WebView) findViewById(R.id.web);

		bindViews();
	}

	private void bindViews() {
		WebSettings settings = webView.getSettings();
		settings.setJavaScriptEnabled(true);
        settings.setSupportZoom(true);
        settings.setBuiltInZoomControls(true);
		webView.loadUrl(authUrl);
		webView.requestFocusFromTouch();

		WebViewClient wvc = new WebViewClient() {
			@Override
			public void onPageFinished(WebView view, String url) {
				super.onPageFinished(view, url);
				//人人网用户名和密码验证通过后，刷新页面时即可返回accessToken
				String reUrl = webView.getUrl();
				Log.d(GlobalData.TAG, "reUrl:" + reUrl);
				if (reUrl.indexOf("access_token") != -1) {
					//截取url中的accessToken
					int startPos = reUrl.indexOf("token=") + 6;
					int endPos = reUrl.indexOf("&expires_in");
					accessToken = reUrl.substring(startPos, endPos);
					//保存获取到的accessToken
					share.saveRenrenToken(accessToken);
					Log.d(GlobalData.TAG, "accessToken:" + accessToken);
					Toast.makeText(RenrenAuthActivity.this, "验证成功", Toast.LENGTH_SHORT).show();
					finish();
				}
			}
		};
        webView.setWebViewClient(wvc);
	}

}

/**
 * 人人网操作工具类
 * @author iStar
 *
 */
public class RenrenHelper {
	public static final String API_URL = "http://api.renren.com/restserver.do";

	private  SharedData share ;

	public RenrenHelper(Context context) {
		share = new SharedData(context);
	}

	/**
	 * 更新状态
	 * @param status 状态内容
	 * @return  是否发布成功
	 */
	public  boolean updateStatus(String status) {
		boolean success = false;
		String accessToken = share.getRenrenToken();    //之前获取的accessToken
		Log.d(GlobalData.TAG, "accessToken:" + accessToken);
		String requestMethod = "status.set";            //接口名称
		String v = "1.0";                               //API的版本号，请设置成1.0
		String url = API_URL;                  //请求人人网开放平台API服务器的地址

		//生成签名
		StringBuilder sb = new StringBuilder();
		sb.append("access_token=").append(accessToken)
			.append("format=").append("JSON")
			.append("method=").append(requestMethod)
			.append("status=").append(status)
			.append("v=").append(v)
			.append(GlobalData.RENREN_SECRET);
		String signature = MD5.getMD5(sb.toString());
		Log.d(GlobalData.TAG, "signature:" + signature);

		PostMethod method = new PostMethod(url);

        //将以上准备好的参数添加到method对象中
		method.addParameter("access_token", accessToken);
		method.addParameter("method", requestMethod);
		method.addParameter("v", v);
		method.addParameter("status", status);
        method.addParameter("format", "JSON");  //返回结果的形式，支持XML或者JSON两种形式，默认为XML
        method.addParameter("sig", signature);

		HttpClient client = new HttpClient();
		try {
			client.executeMethod(method);
			String result = method.getResponseBodyAsString();        //返回请求的结果
			Log.d(GlobalData.TAG, "result:" + result);
			if (result != null) {
				JSONObject json = new JSONObject(result);
				String ret = (String) json.get("result");
				if (ret != null) {
					success = ret.equals("1");
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		} 

		return success;
	}
}

import java.security.MessageDigest;

/**
 * MD5工具类，用于生产字符串的MD5码
 * @author iStar
 *
 */
public class MD5 {

	public static String getMD5(String s) {
		try {
			MessageDigest md5 = MessageDigest.getInstance("MD5");

			byte[] byteArray = s.getBytes("ISO-8859-1");
			byte[] md5Bytes = md5.digest(byteArray);

			StringBuffer hexValue = new StringBuffer();

			for (int i = 0; i < md5Bytes.length; i++) {
				int val = ((int) md5Bytes[i]) & 0xff;
				if (val < 16)
					hexValue.append("0");
				hexValue.append(Integer.toHexString(val));
			}

			return hexValue.toString();

		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}
}