http获取图片信息

一、安卓访问网络需要AndroidManifest.xml配置这样一个节点

<manifest>

 <uses-permission android:name="android.permission.INTERNET" />
</manifest>

 

二、获取图片两种方法

第一种：

public Bitmap loadImageFromUrl(String url) throws Exception {
		final DefaultHttpClient client = new DefaultHttpClient();
		final HttpGet getRequest = new HttpGet(url);

		HttpResponse response = client.execute(getRequest);
		int statusCode = response.getStatusLine().getStatusCode();
		if (statusCode != HttpStatus.SC_OK) {
			Log.e("PicShow", "Request URL failed, error code =" + statusCode);
		}

		HttpEntity entity = response.getEntity();
		if (entity == null) {
			Log.e("PicShow", "HttpEntity is null");
		}
		InputStream is = null;
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		try {
			is = entity.getContent();
			byte[] buf = new byte[1024];
			int readBytes = -1;
			while ((readBytes = is.read(buf)) != -1) {
				baos.write(buf, 0, readBytes);
			}
		} finally {
			if (baos != null) {
				baos.close();
			}
			if (is != null) {
				is.close();
			}
		}
		byte[] imageArray = baos.toByteArray();
		return BitmapFactory.decodeByteArray(imageArray, 0, imageArray.length);
	}

第二种方法：

	public byte[] getImage(String path) throws Exception {
		URL url = new URL(path);
		HttpURLConnection conn = (HttpURLConnection) url.openConnection();
		conn.setConnectTimeout(5 * 1000);
		conn.setRequestMethod("GET");
		InputStream inStream = conn.getInputStream();
		if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
			return readStream(inStream);
		}
		return null;
	}