package cn.com.lzt.common.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.Charset;
import java.util.Map;
import java.util.Vector;

/**
 * 发送Http请求
 * 
 * @author 刘鹏
 * 
 */
public class HttpRequester {
	private String defaultContentEncoding;
	private int timeOut;

	public HttpRequester() {
		defaultContentEncoding = Charset.defaultCharset().name();
		timeOut = 5;
	}

	/**
	 * 发送GET请求
	 * 
	 * @param urlString
	 *            URL地址
	 * @return 响应对象
	 * @throws IOException
	 */
	public HttpRespons sendGet(String urlString) throws IOException {
		return send(urlString, "GET", null, null);
	}

	/**
	 * 发送GET请求
	 * 
	 * @param urlString
	 *            URL地址
	 * @param params
	 *            参数集合
	 * @return 响应对象
	 * @throws IOException
	 */
	public HttpRespons sendGet(String urlString, Map<String, String> params)
			throws IOException {
		return send(urlString, "GET", params, null);
	}

	/**
	 * 发送GET请求
	 * 
	 * @param urlString
	 *            URL地址
	 * @param params
	 *            参数集合
	 * @param propertys
	 *            请求属性
	 * @return 响应对象
	 * @throws IOException
	 */
	public HttpRespons sendGet(String urlString, Map<String, String> params,
			Map<String, String> propertys) throws IOException {
		return send(urlString, "GET", params, propertys);
	}

	/**
	 * 发送POST请求
	 * 
	 * @param urlString
	 *            URL地址
	 * @return 响应对象
	 * @throws IOException
	 */
	public HttpRespons sendPost(String urlString) throws IOException {
		return send(urlString, "POST", null, null);
	}

	/**
	 * 发送POST请求
	 * 
	 * @param urlString
	 *            URL地址
	 * @param params
	 *            参数集合
	 * @return 响应对象
	 * @throws IOException
	 */
	public HttpRespons sendPost(String urlString, Map<String, String> params)
			throws IOException {
		return send(urlString, "POST", params, null);
	}

	/**
	 * 发送POST请求
	 * 
	 * @param urlString
	 *            URL地址
	 * @param params
	 *            参数集合
	 * @param propertys
	 *            请求属性
	 * @return 响应对象
	 * @throws IOException
	 */
	public HttpRespons sendPost(String urlString, Map<String, String> params,
			Map<String, String> propertys) throws IOException {
		return send(urlString, "POST", params, propertys);
	}

	public HttpRespons sendPost2SCF(String urlString, String parameters)
			throws IOException {
		HttpURLConnection urlConnection = null;
		URL url = new URL(urlString);
		urlConnection = (HttpURLConnection) url.openConnection();

		urlConnection.setConnectTimeout(timeOut);
		urlConnection.setRequestMethod("POST");
		urlConnection.setDoOutput(true);
		urlConnection.setDoInput(true);
		urlConnection.setUseCaches(false);
		urlConnection.setRequestProperty("Content-Type", "text/xml");

		urlConnection.getOutputStream().write(parameters.getBytes());
		urlConnection.getOutputStream().flush();
		urlConnection.getOutputStream().close();
		return makeContent(urlString, urlConnection);
	}

	public HttpRespons sendPost2Spring(String urlString, String parameters)
			throws IOException {
		HttpURLConnection urlConnection = null;
		URL url = new URL(urlString);
		urlConnection = (HttpURLConnection) url.openConnection();

		urlConnection.setConnectTimeout(timeOut);
		urlConnection.setRequestMethod("POST");
		urlConnection.setDoOutput(true);
		urlConnection.setDoInput(true);
		urlConnection.setUseCaches(false);
		urlConnection.setRequestProperty("Content-Type",
				"'application/json;charset=UTF-8");

		urlConnection.getOutputStream().write(parameters.getBytes());
		urlConnection.getOutputStream().flush();
		urlConnection.getOutputStream().close();
		return makeContent(urlString, urlConnection);
	}

	/**
	 * 发送HTTP请求
	 * 
	 * @param urlString
	 * @return 响映对象
	 * @throws IOException
	 */
	private HttpRespons send(String urlString, String method,
			Map<String, String> parameters, Map<String, String> propertys)
			throws IOException {
		HttpURLConnection urlConnection = null;

		if (method.equalsIgnoreCase("GET") && parameters != null) {
			StringBuffer param = new StringBuffer();
			int i = 0;
			for (String key : parameters.keySet()) {
				if (i == 0) {
					param.append("?");
				} else {
					param.append("&");
				}
				param.append(key).append("=").append(parameters.get(key));
				i++;
			}
			urlString += param;
		}
		URL url = new URL(urlString);
		urlConnection = (HttpURLConnection) url.openConnection();

		urlConnection.setConnectTimeout(timeOut);
		urlConnection.setRequestMethod(method);
		urlConnection.setDoOutput(true);
		urlConnection.setDoInput(true);
		urlConnection.setUseCaches(false);
		urlConnection.setRequestProperty("Content-Type",
				"text/plain;charset=UTF-8");

		if (propertys != null) {
			for (String key : propertys.keySet()) {
				urlConnection.addRequestProperty(key, propertys.get(key));
			}
		}

		if (method.equalsIgnoreCase("POST") && parameters != null) {
			// urlConnection.setRequestProperty("Content-Type", "text/xml");
			StringBuffer param = new StringBuffer();
			for (String key : parameters.keySet()) {
				// param.append(parameters.get(key));
				param.append("&");
				param.append(key).append("=").append(parameters.get(key));
			}
			urlConnection.getOutputStream().write(param.toString().getBytes());
			urlConnection.getOutputStream().flush();
			urlConnection.getOutputStream().close();
		}

		return makeContent(urlString, urlConnection);
	}

	/**
	 * 得到响应对象
	 * 
	 * @param urlConnection
	 * @return 响应对象
	 * @throws IOException
	 */
	private HttpRespons makeContent(String urlString,
			HttpURLConnection urlConnection) throws IOException {
		HttpRespons httpResponser = new HttpRespons();
		try {
			InputStream in = urlConnection.getInputStream();
			BufferedReader bufferedReader = new BufferedReader(
					new InputStreamReader(in));
			httpResponser.contentCollection = new Vector<String>();
			StringBuffer temp = new StringBuffer();
			String line = bufferedReader.readLine();
			while (line != null) {
				httpResponser.contentCollection.add(line);
				temp.append(line).append("\r\n");
				line = bufferedReader.readLine();
			}
			bufferedReader.close();

			String ecod = urlConnection.getContentEncoding();
			if (ecod == null) {
				ecod = defaultContentEncoding;
			}

			httpResponser.urlString = urlString;

			httpResponser.defaultPort = urlConnection.getURL().getDefaultPort();
			httpResponser.file = urlConnection.getURL().getFile();
			httpResponser.host = urlConnection.getURL().getHost();
			httpResponser.path = urlConnection.getURL().getPath();
			httpResponser.port = urlConnection.getURL().getPort();
			httpResponser.protocol = urlConnection.getURL().getProtocol();
			httpResponser.query = urlConnection.getURL().getQuery();
			httpResponser.ref = urlConnection.getURL().getRef();
			httpResponser.userInfo = urlConnection.getURL().getUserInfo();

			httpResponser.content = new String(temp.toString().getBytes(), ecod);
			httpResponser.contentEncoding = ecod;
			httpResponser.code = urlConnection.getResponseCode();
			httpResponser.message = urlConnection.getResponseMessage();
			httpResponser.contentType = urlConnection.getContentType();
			httpResponser.method = urlConnection.getRequestMethod();
			httpResponser.connectTimeout = urlConnection.getConnectTimeout();
			httpResponser.readTimeout = urlConnection.getReadTimeout();

			return httpResponser;
		} catch (IOException e) {
			System.out.print(e.getMessage());
			throw e;
		} finally {
			if (urlConnection != null) {
				urlConnection.disconnect();
			}
		}
	}

	/**
	 * 发送HttpPost请求
	 * 
	 * @param strURL
	 *            服务地址
	 * @param params
	 *            json字符串,例如: "{ \"id\":\"12345\" }" ;其中属性名必须带双引号<br/>
	 * @return 成功:返回json字符串<br/>
	 */
	public static HttpRespons post(String strURL, String params) throws Exception{
			HttpRespons httpResponser = new HttpRespons();
			URL url = new URL(strURL);// 创建连接
			HttpURLConnection connection = (HttpURLConnection) url
					.openConnection();
			connection.setDoOutput(true);
			connection.setDoInput(true);
			connection.setUseCaches(false);
			connection.setInstanceFollowRedirects(true);
			connection.setRequestMethod("POST"); // 设置请求方式
			connection.setRequestProperty("Accept", "application/json"); // 设置接收数据的格式
			connection.setRequestProperty("Content-Type", "application/json"); // 设置发送数据的格式
			connection.connect();
			OutputStreamWriter out = new OutputStreamWriter(
					connection.getOutputStream(), "UTF-8"); // utf-8编码
			out.append(params);
			out.flush();
			out.close();
			// 读取响应
			InputStream is = connection.getInputStream();
			BufferedReader bufferedReader = new BufferedReader(
					new InputStreamReader(is));
			httpResponser.contentCollection = new Vector<String>();
			StringBuffer temp = new StringBuffer();
			String line = bufferedReader.readLine();
			while (line != null) {
				httpResponser.contentCollection.add(line);
				temp.append(line).append("\r\n");
				line = bufferedReader.readLine();
			}
			bufferedReader.close();

			httpResponser.urlString = strURL;
			httpResponser.defaultPort = connection.getURL().getDefaultPort();
			httpResponser.file = connection.getURL().getFile();
			httpResponser.host = connection.getURL().getHost();
			httpResponser.path = connection.getURL().getPath();
			httpResponser.port = connection.getURL().getPort();
			httpResponser.protocol = connection.getURL().getProtocol();
			httpResponser.query = connection.getURL().getQuery();
			httpResponser.ref = connection.getURL().getRef();
			httpResponser.userInfo = connection.getURL().getUserInfo();

			httpResponser.content = new String(temp.toString().getBytes(),
					"UTF-8");
			httpResponser.contentEncoding = "UTF-8";
			httpResponser.code = connection.getResponseCode();
			httpResponser.message = connection.getResponseMessage();
			httpResponser.contentType = connection.getContentType();
			httpResponser.method = connection.getRequestMethod();
			httpResponser.connectTimeout = connection.getConnectTimeout();
			httpResponser.readTimeout = connection.getReadTimeout();

			return httpResponser;
	}

	/**
	 * 默认的响应字符集
	 */
	public String getDefaultContentEncoding() {
		return defaultContentEncoding;
	}

	/**
	 * 设置默认的响应字符集
	 */
	public void setDefaultContentEncoding(String defaultContentEncoding) {
		this.defaultContentEncoding = defaultContentEncoding;
	}

	/**
	 * 默认的连接超时秒数
	 */
	public int getTimeOut() {
		return timeOut;
	}

	/**
	 * 设置默认的超时秒数
	 */
	public void setTimeOut(int timeOut) {
		this.timeOut = timeOut;
	}
}