【发布时间】：2018-10-26 07:24:28
【问题描述】：
我曾尝试使用 php 集成 paytm。我按照这个 url 来实施 paytm https://www.simplifiedcoding.net/paytm-integration-android-example/。 然后下载他们的示例代码进行尝试。更改了所有凭据，如 MID、回调 url 和频道 ID 等。在设备上运行时，点击购买按钮时会打开购买屏幕，加载并显示 oops “糟糕！付款失败”
在 android 控制台中，我可以获取订单 ID。这是constants.java的代码
package simplifiedcoding.net.paytmpaymentsample;
/**
* Created by Belal on 1/10/2018.
*/
public class Constants {
public static final String M_ID = "xxxxx301208461"; //Paytm Merchand Id
we got it in paytm credentials
public static final String CHANNEL_ID = "WAP"; //Paytm Channel Id, got it in
paytm credentials
public static final String INDUSTRY_TYPE_ID = "Retail"; //Paytm industry type
got it in paytm credential
public static final String WEBSITE = "APP_STAGING";
public static final String CALLBACK_URL =
"https://pguat.paytm.com/paytmchecksum/paytmCallback.jsp";
}
这里是代码 API.java
package simplifiedcoding.net.paytmpaymentsample;
import retrofit2.Call;
import retrofit2.http.Field;
import retrofit2.http.FormUrlEncoded;
import retrofit2.http.POST;
/**
* Created by Belal on 1/10/2018.
*/
public interface Api {
//this is the URL of the paytm folder that we added in the server
//make sure you are using your ip else it will not work
String BASE_URL = "http://10.208.1.229/paytm/";
@FormUrlEncoded
@POST("generateChecksum.php")
Call<Checksum> getChecksum(
@Field("MID") String mId,
@Field("ORDER_ID") String orderId,
@Field("CUST_ID") String custId,
@Field("CHANNEL_ID") String channelId,
@Field("TXN_AMOUNT") String txnAmount,
@Field("WEBSITE") String website,
@Field("CALLBACK_URL") String callbackUrl,
@Field("INDUSTRY_TYPE_ID") String industryTypeId
);
}
MainActivity.java 代码
package simplifiedcoding.net.paytmpaymentsample;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
import com.paytm.pgsdk.PaytmOrder;
import com.paytm.pgsdk.PaytmPGService;
import com.paytm.pgsdk.PaytmPaymentTransactionCallback;
import java.util.HashMap;
import java.util.Map;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;
//implementing PaytmPaymentTransactionCallback to track the payment result.
public class MainActivity extends AppCompatActivity implements
PaytmPaymentTransactionCallback {
//the textview in the interface where we have the price
TextView textViewPrice;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//getting the textview
textViewPrice = findViewById(R.id.textViewPrice);
//attaching a click listener to the button buy
findViewById(R.id.buttonBuy).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//calling the method generateCheckSum() which will generate the paytm checksum for payment
generateCheckSum();
}
});
}
private void generateCheckSum() {
//getting the tax amount first.
String txnAmount = textViewPrice.getText().toString().trim();
//creating a retrofit object.
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(Api.BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
//creating the retrofit api service
Api apiService = retrofit.create(Api.class);
//creating paytm object
//containing all the values required
final Paytm paytm = new Paytm(
Constants.M_ID,
Constants.CHANNEL_ID,
txnAmount,
Constants.WEBSITE,
Constants.CALLBACK_URL,
Constants.INDUSTRY_TYPE_ID
);
//creating a call object from the apiService
Call<Checksum> call = apiService.getChecksum(
paytm.getmId(),
paytm.getOrderId(),
paytm.getCustId(),
paytm.getChannelId(),
paytm.getTxnAmount(),
paytm.getWebsite(),
paytm.getCallBackUrl(),
paytm.getIndustryTypeId()
);
//making the call to generate checksum
call.enqueue(new Callback<Checksum>() {
@Override
public void onResponse(Call<Checksum> call, Response<Checksum> response) {
//once we get the checksum we will initiailize the payment.
//the method is taking the checksum we got and the paytm object as the parameter
initializePaytmPayment(response.body().getChecksumHash(), paytm);
}
@Override
public void onFailure(Call<Checksum> call, Throwable t) {
}
});
}
private void initializePaytmPayment(String checksumHash, Paytm paytm) {
//getting paytm service
PaytmPGService Service = PaytmPGService.getStagingService();
//use this when using for production
//PaytmPGService Service = PaytmPGService.getProductionService();
//creating a hashmap and adding all the values required
Map<String, String> paramMap = new HashMap<>();
paramMap.put("MID", Constants.M_ID);
paramMap.put("ORDER_ID", paytm.getOrderId());
paramMap.put("CUST_ID", paytm.getCustId());
paramMap.put("CHANNEL_ID", paytm.getChannelId());
paramMap.put("TXN_AMOUNT", paytm.getTxnAmount());
paramMap.put("WEBSITE", paytm.getWebsite());
paramMap.put("CALLBACK_URL", paytm.getCallBackUrl());
paramMap.put("CHECKSUMHASH", checksumHash);
paramMap.put("INDUSTRY_TYPE_ID", paytm.getIndustryTypeId());
//creating a paytm order object using the hashmap
PaytmOrder order = new PaytmOrder(paramMap);
//intializing the paytm service
Service.initialize(order, null);
//finally starting the payment transaction
Service.startPaymentTransaction(this, true, true, this);
}
//all these overriden method is to detect the payment result accordingly
@Override
public void onTransactionResponse(Bundle bundle) {
Toast.makeText(this, bundle.toString(), Toast.LENGTH_LONG).show();
}
@Override
public void networkNotAvailable() {
Toast.makeText(this, "Network error", Toast.LENGTH_LONG).show();
}
@Override
public void clientAuthenticationFailed(String s) {
Toast.makeText(this, s, Toast.LENGTH_LONG).show();
}
@Override
public void someUIErrorOccurred(String s) {
Toast.makeText(this, s, Toast.LENGTH_LONG).show();
}
@Override
public void onErrorLoadingWebPage(int i, String s, String s1) {
Toast.makeText(this, s, Toast.LENGTH_LONG).show();
}
@Override
public void onBackPressedCancelTransaction() {
Toast.makeText(this, "Back Pressed", Toast.LENGTH_LONG).show();
}
@Override
public void onTransactionCancel(String s, Bundle bundle) {
Toast.makeText(this, s + bundle.toString(), Toast.LENGTH_LONG).show();
}
}
【问题讨论】：
-
将 WEBSITE = "APP_STAGING" 更改为 "APPSTAGING"
标签： java android android-studio payment-gateway paytm