JAVA调用接口

String sendPost(String jsonStr, String path)
            throws IOException {
        byte[] data = jsonStr.getBytes();
        java.net.URL url = new java.net.URL(path);
        java.net.HttpURLConnection conn = 
        		(java.net.HttpURLConnection) url.openConnection();
        conn.setRequestMethod("POST");
        conn.setConnectTimeout(5 * 1000);// 设置连接超时时间为5秒 
        conn.setReadTimeout(20 * 1000);// 设置读取超时时间为20秒 
        // 使用 URL 连接进行输出，则将 DoOutput标志设置为 true
        conn.setDoOutput(true);
      
        conn.setRequestProperty("Content-Type", "text/xml;charset=UTF-8");
        //conn.setRequestProperty("Content-Encoding","gzip");
        conn.setRequestProperty("Content-Length", String.valueOf(data.length));
        OutputStream outStream = conn.getOutputStream();// 返回写入到此连接的输出流
        outStream.write(data);
        outStream.close();//关闭流
        String msg = "";// 保存调用http服务后的响应信息
        // 如果请求响应码是200，则表示成功
        if (conn.getResponseCode() == 200) {
            // HTTP服务端返回的编码是UTF-8,故必须设置为UTF-8,保持编码统一,否则会出现中文乱码
            BufferedReader in = new BufferedReader(new InputStreamReader(
                    (InputStream) conn.getInputStream(), "UTF-8"));
            msg = in.readLine();
            in.close();
        }
        conn.disconnect();// 断开连接
        return msg;
    }