本文使用的是alibaba 所提供的公共接口 https://ccdcapi.alipay.com 进行银行卡卡号的检验

public void checkBackId(String backID){

        String checkID = "https://ccdcapi.alipay.com/validateAndCacheCardInfo.json?_input_charset=utf-8&cardNo="+backID+"&cardBinCheck=true";

        OkHttpClient okHttpClient = OkHttpNet.getOkHttpClientInstance();

        final Request request = new Request.Builder().url(checkID).build();

        Call call = okHttpClient.newCall(request);

        call.enqueue(new Callback() {

            @Override

            public void onFailure(Call call, IOException e) {

                Log.d("tag", "onFailure: 失败----"+e);

            }

            @Override

            public void onResponse(Call call, Response response) throws IOException {

                Log.d("tag", "onResponse: 成功---"+response.body().string());

            }

        });

    }

输出结果：

onResponse: 成功---{"bank":"SPABANK","validated":true,"cardType":"DC","key":"6225380004804588","messages":[],"stat":"ok"}

onResponse: 成功---{"validated":false,"key":"62129611060012231","stat":"ok","messages":[{"errorCodes":"CARD_BIN_NOT_MATCH","name":"cardNo"}]}

这个方法现在广为流传 效果自然不用说 有需要的可以直接用

加群交流