Android文件上传

/**
	 * 文件上传
	 * 
	 * @param file
	 *            上传的文件
	 * @param urlStr
	 *            上传到的地址
	 * @return 上传完成后的结果
	 * @throws Exception
	 *             异常
	 */
	public String httpClientUpload(File file, String urlStr) throws Exception {
		String result = "";
		HttpPost post = null;
		HttpResponse response = null;
		InputStreamEntity reqEntity = null;
		try {
			if (CommonUtils.networkIsAvaiable(mContext)) {
				post = new HttpPost(urlStr);

				if (null != HttpHandler.mCookieStore) {
					SingletonHttpClient.getHttpClient().setCookieStore(
							HttpHandler.mCookieStore);
					LogUtils.printLog(TAG, "httpClientUpload:setCookie",
							HttpHandler.mCookieStore.toString());
				}
				reqEntity = new InputStreamEntity(new FileInputStream(file), -1);
				reqEntity.setContentType("binary/octet-stream");
				reqEntity.setChunked(true);
				post.setEntity(reqEntity);

				response = SingletonHttpClient.getHttpClient().execute(post);
				if (HttpURLConnection.HTTP_OK == response.getStatusLine()
						.getStatusCode()) {
					HttpHandler.mCookieStore = SingletonHttpClient
							.getHttpClient().getCookieStore();
					result = EntityUtils.toString(response.getEntity(),
							HttpHandler.CHARSET);

					LogUtils.printLog(TAG, "httpClientUpload:getCookie",
							HttpHandler.mCookieStore.toString());
				}
			}
			return result;
		} finally {
			file = null;
			urlStr = null;
			result = null;
			if (post != null && !post.isAborted()) {
				post.abort();
			}
			response = null;
			reqEntity = null;
		}
	}