public String sendPost(){　　　　　　　　　PrintWriter out = null;		BufferedReader in = null;		String result = "";		String request_ip=ConfigDate.getProperty("request_ip");		try {			String url = "http://"+request_ip+"/findPassword.jo";			URL realUrl = new URL(url);			URLConnection conn = realUrl.openConnection();// 打开和URL之间的连接			// 设置通用的请求属性			conn.setRequestProperty("accept", "*/*");			conn.setRequestProperty("connection", "Keep-Alive");			conn.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");			// 发送POST请求必须设置如下两行			conn.setDoOutput(true);			conn.setDoInput(true);			// 获取URLConnection对象对应的输出流			out = new PrintWriter(conn.getOutputStream());			String email = request.getParameter("email");			out.print(email);// 发送请求参数			out.flush();// flush输出流的缓冲			// 定义BufferedReader输入流来读取URL的响应			in = new BufferedReader(new InputStreamReader(conn.getInputStream()));			String line;//读取返回响应的数据			while ((line = in.readLine()) != null) {				result += "\n" + line;			}		} catch (Exception e) {			System.out.println("发送POST请求出现异常！" + e);			e.printStackTrace();		}		// 使用finally块来关闭输出流、输入流		finally {			try {				if (out != null)					out.close();				if (in != null)					in.close();			} catch (IOException ex) {				ex.printStackTrace();			}		}		return null;  }