JAVA读取远程和本地XML文件

public static String readFile(String xmlpath) {
        String fileText = "";
        try {
            // 网络读取
            URL url = new URL(xmlpath);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            DataInputStream input = new DataInputStream(conn.getInputStream());
            InputStreamReader isr = new InputStreamReader(input, "utf-8");
            // 本地读取
            FileInputStream fis = new FileInputStream("D:\\aa.xml");
            InputStreamReader isr = new InputStreamReader(fis, "utf-8");

            BufferedReader br = new BufferedReader(isr);
            String line = null;
            while ((line = br.readLine()) != null) {
                fileText += line;
                fileText += "\r\n";
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return fileText;
    }