Android OKhttp ポスト送信 XML データ

    public static String postXml(String url,String xmlStr){
    
    
        RequestBody body=RequestBody.create(MediaType.parse("application/xml"),xmlStr);
        Request requestOk = new Request.Builder()
                .url(url)
                .post(body)
                .build();

        Response response;
        try {
    
    
            response = new OkHttpClient().newCall(requestOk).execute();
            String jsonString = response.body().string();
            if(response.isSuccessful()){
    
    
                return jsonString;
            }
        } catch (Exception e) {
    
    
            e.printStackTrace();
            return e.getMessage();
        }
        return "";
    }