post上传和压缩、插件模拟请求

	iv = (ImageView) findViewById(R.id.iv);
		findViewById(R.id.btn1).setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				//1.bitmap
				Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
				//2. bitmap-->byte[]
				ByteArrayOutputStream baos = new ByteArrayOutputStream();
				bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
				byte[] byteArray = baos.toByteArray();
				//3.byte[]->string,这样就可以用string传给服务器
				String bitmapString = Base64.encodeToString(byteArray, Base64.DEFAULT);
				System.out.println("bitmapString :" + bitmapString);
				//4. string-->byte[];
				byte[] bitmapByteArr = Base64.decode(bitmapString, Base64.DEFAULT);
				//5.byte[]-->bitmap
				Bitmap bitmap2 = BitmapFactory.decodeByteArray(bitmapByteArr, 0, bitmapByteArr.length);
				//6.在imageView上设置图片
				iv.setImageBitmap(bitmap2);
				//obj-->byte[] -->string->sp
			}
		});

public class MainActivity extends Activity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		initGzip();
		Map<String, String> map = new HashMap<String, String>();
		map.put("name", "billy");
		
		
		initPostKeyValue(map);
		String jsonString = "{\"name\":\"billy\"}";
		initPostJsonString(jsonString);
		File file = new File("");
		initPostFile(file);
	}
	/**
	 * 文件的上传
	 * @param file
	 */
	private void initPostFile(File file) {
		try {
			DefaultHttpClient httpClient = new DefaultHttpClient();
			HttpPost post = new HttpPost("");
			//2. 传递二进制类型的参数
			MultipartEntity entity = new MultipartEntity();
			entity.addPart("actimg", new FileBody(file));
			post.setEntity(entity);
			httpClient.execute(post);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	/**
	 * 使用jsonString post数据库
	 * @param jsonString
	 */
	private void initPostJsonString(String jsonString) {
		try {
			DefaultHttpClient httpClient = new DefaultHttpClient();
			HttpPost post = new HttpPost("");
			post.addHeader("Content-Type", "application/json");
			//Content-Type text/xml-->xml
			//Content-Type application/json-->json
			//2. 传递jsonString类型的参数
			post.setEntity(new StringEntity(jsonString));
			httpClient.execute(post);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	/**
	 * 使用key-value的形式post数据
	 * @param parmas 请求参数对于的map集合
	 */
	private void initPostKeyValue(Map<String, String> parmas) {
		try {
			DefaultHttpClient httpClient = new DefaultHttpClient();
			HttpPost post = new HttpPost("");
			//1. 传递key-value的参数
			List<BasicNameValuePair> parameters = new ArrayList<BasicNameValuePair>();
			for (String key : parmas.keySet()) {
				BasicNameValuePair basicNameValuePair = new BasicNameValuePair(key, parmas.get(key));
				parameters.add(basicNameValuePair);
			}
			UrlEncodedFormEntity form = new UrlEncodedFormEntity(parameters);
			post.setEntity(form);
			httpClient.execute(post);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	private void initGzip() {
		findViewById(R.id.btn1).setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				new Thread(new Runnable() {
					@Override
					public void run() {
						try {
							boolean isUseGzip = false;
							DefaultHttpClient httpClient = new DefaultHttpClient();
							HttpGet get = new HttpGet("http://httpbin.org/gzip");
							//1. 告知服务器.客户端支持gzip解压
							get.addHeader("Accept-Encoding", "gzip");
							HttpResponse response = httpClient.execute(get);
							if (response.getStatusLine().getStatusCode() == 200) {
								//2. 根据响应头得知服务器知否进行了gzip压缩
								Header[] headers = response.getHeaders("Content-Encoding");
								for (Header header : headers) {
									if ("gzip".equals(header.getValue())) {
										isUseGzip = true;
									}
								}
								HttpEntity entity = response.getEntity();
								//3.根据是否使用gzip.解压具体的数据
								String result = "";
								if (isUseGzip) {
									GZIPInputStream in = new GZIPInputStream(entity.getContent());
									result = IoUtils.convertStreamToString(in);
								} else {
									result = EntityUtils.toString(entity);
								}
								System.out.println("result:" + result);
							}
						} catch (Exception e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
					}
				}).start();
			}
		});
	}
}