使用HttpURLConnection获取数据部分乱码

问题是因为HttpURLConnection接收数据的时候 字符集默认的是GBK 要转码UTF-8

public static String sendPostNew(String url, String param ) {
    String result = "";
    try {
        URL httpurl = new URL(url);
        HttpURLConnection httpConn = (HttpURLConnection) httpurl
                .openConnection();
        httpConn.setRequestMethod("POST");
        httpConn.setDoOutput(true);
        httpConn.setDoInput(true);
        httpConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

        PrintWriter out = new PrintWriter(new OutputStreamWriter(
                httpConn.getOutputStream(), "utf-8"));

        out.print(param);
        out.flush();
        out.close();


        int code=httpConn.getResponseCode();

        if (code==200) {
            //关键在这行代码。设置接收字符集  防止乱码
            BufferedReader in = new BufferedReader(new InputStreamReader(
                    httpConn.getInputStream(),"UTF-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
            in.close(); 
        }else{ 
            result=code+"";  
        }
    } catch (Exception e) {
        System.out.println("没有结果！" + e);
    }
    return result;
}