package weiboUtil;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Map;
import java.util.Map.Entry;

public class HttpUtil {

	public static String httpConn(String url, Map<Object, Object> params) {
		URL u = null;
		HttpURLConnection con = null;
		StringBuffer sb = new StringBuffer();
		if (params != null) {
			for (Entry<Object, Object> e : params.entrySet()) {
				sb.append(e.getKey());
				sb.append("=");
				sb.append(e.getValue());
				sb.append("&");
			}
			sb.substring(0, sb.length() - 1);
		}

		System.out.println(url);
		System.out.println(sb.toString());

		try {
			u = new URL(url);
			con = (HttpURLConnection) u.openConnection();
			con.setRequestMethod("post");
			con.setDoOutput(true);
			con.setDoInput(true);
			con.setUseCaches(false);
			con.setRequestProperty("Content-Type",
					"application/x-www-form-urlencoded");
			OutputStreamWriter osw = new OutputStreamWriter(
					con.getOutputStream(), "UTF-8");
			osw.write(sb.toString());
			osw.flush();
			osw.close();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			if (con != null) {
				con.disconnect();
			}
		}
		// 讀取http請求返回結果
		StringBuffer buffer = new StringBuffer();
		try {
			BufferedReader br = new BufferedReader(new InputStreamReader(
					con.getInputStream(), "UTF-8"));
			String temp;
			while ((temp = br.readLine()) != null) {
				buffer.append(temp);
				buffer.append("\n");
			}
		} catch (Exception e) {
			e.printStackTrace();
		}

		return buffer.toString();
	}
}