java httpclient post请求

        private static DefaultHttpClient = new DefaultHttpClient();

	public String post(String uri,String params) throws URISyntaxException, ClientProtocolException, IOException{
		System.out.println(uri);
		HttpPost httpPost = new HttpPost();
		httpPost.setURI(new URI(uri));
		httpPost.setEntity(new StringEntity(params, "UTF-8"));
		HttpResponse response2 = this.getCLient().execute(httpPost);
		HttpEntity entity = response2.getEntity();
		String data = this.getData(entity.getContent());
		EntityUtils.consume(entity);
		return data;
	}

	public String getData(InputStream in) throws IOException {
		String dd = "";
		int length = 0;
		byte[] data = new byte[1024];
		while ((length = in.read(data)) != -1) {
			dd += new String(data, 0, length);
		}
		return dd;
	}