模拟表单发送POST，GET请求获取数据

public static String httpRequest(String reqUrl, String reqMethod,
			String outStr) {
		URL url = null;
		String str = "";
		InputStream in = null;
		OutputStream out = null;
		BufferedReader buff = null;
		InputStreamReader inr = null;
		HttpURLConnection httpConn = null;
		StringBuffer sb = new StringBuffer();
		try {
			url = new URL(reqUrl);
			httpConn = (HttpURLConnection) url.openConnection();
			httpConn.setDoOutput(true);
			httpConn.setDoInput(true);
			httpConn.setUseCaches(false);
			httpConn.setRequestMethod(reqMethod);
			if(reqMethod.equals("GET")){
				httpConn.connect();
			}
			if (null != outStr) {
				out = httpConn.getOutputStream();
				out.write(outStr.trim().getBytes("UTF-8"));
			}
			in = httpConn.getInputStream();
			inr = new InputStreamReader(in, "UTF-8");
			buff = new BufferedReader(inr);

			while ((str = buff.readLine()) != null) {
				sb.append(str);
			}
			str = sb.toString();
		} catch (ConnectException e) {
			logger.error("httpRequest()",e);
		} catch (Exception e) {
			logger.error("httpRequest()",e);
		} finally {
			try {
				out.close();
				buff.close();
				inr.close();
				in.close();
				in = null;
				httpConn.disconnect();
			} catch (Exception e) {
				logger.error(e.getMessage());
			}
		}
		return str;
	}