Http工具类

public class HttpUtil
{
    static Properties prop = System.getProperties();
	static
	{
		try
		{
			Properties prop = System.getProperties();
			InputStream in = HttpUtil.class.getClassLoader()
					.getResourceAsStream("util.properties");
			prop.load(in);
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}

	public static String get(String url)
	{
		String response = null;
		Map<String, String> result = new HashMap<String, String>();
		HttpClient client = new HttpClient();
		String serverurl = prop.getProperty("http.serverurl");
		GetMethod method = new GetMethod(serverurl + url);
		try
		{
			// 执行方法返回状态码
			int statusCode = client.executeMethod(method);
			// 返回的信息
			response = method.getResponseBodyAsString();
			result.put("statuscode", Integer.toString(statusCode));
			result.put("response", response);
			System.out.println(response);
		}
		catch (HttpException e)
		{
			e.printStackTrace();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
		finally
		{
			// 无论响应与否都要关闭连接
			method.releaseConnection();
		}
		return response;
	}

	public static String post(String url, Map<String, Object> data)
	{
		Map<String, Object> ret = new HashMap<String, Object>();
		String response = null;
		HttpClient client = new HttpClient();
		String serverurl = prop.getProperty("http.serverurl");
		PostMethod method = new PostMethod(serverurl + url);
		method.addRequestHeader("Content-Type",
				"application/x-www-form-urlencoded;charset=UTF-8");
		try
		{
			// 设置参数
			for (Map.Entry<String, Object> entry : data.entrySet())
			{
				method.addParameter(new NameValuePair(entry.getKey(), String
						.valueOf(entry.getValue())));
			}
			// 执行方法返回状态码
			int statusCode = client.executeMethod(method);
			// 返回的信息
			response = method.getResponseBodyAsString();
			ret.put("statuscode", statusCode);
			ret.put("response", response);
		}
		catch (HttpException e)
		{
			e.printStackTrace();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
		finally
		{
			// 无论响应与否都要关闭连接
			method.releaseConnection();
		}
		return response;
	}

	public static Map<String, Object> post(String url, String xml)
	{
		Map<String, Object> result = new HashMap<String, Object>();
		HttpClient client = new HttpClient();
		String serverurl = prop.getProperty("http.serverurl");
		PostMethod method = new PostMethod(serverurl + url);
		method.setRequestHeader("Content-type", "text/xml; charset=UTF-8");
		try
		{
			RequestEntity entity = new StringRequestEntity(xml, "text/xml",
					"iso-8859-1");
			method.setRequestEntity(entity);
			// 执行方法返回状态码
			int statusCode = client.executeMethod(method);
			result.put("statuscode", Integer.toString(statusCode));
			// 若是转发301、302
			if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY
					|| statusCode == HttpStatus.SC_MOVED_TEMPORARILY)
			{
				// 从头中取出转向的地址
				Header locationHeader = method.getResponseHeader("location");
				String location = locationHeader.getValue();
				result.put("redirect", location);
			}
			else
			{
				// 返回的信息
				result.put("response", method.getResponseBodyAsString());
			}
		}
		catch (HttpException e)
		{
			e.printStackTrace();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
		finally
		{
			// 无论响应与否都要关闭连接
			method.releaseConnection();
		}
		return result;
	}
}