Payment Gateway » MiGS - Payment Processor

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h1. Introduction

High level view of the payment flow:

!payment_flow.png!

h1. Programming Guide

h2. Resources

h3. SCM

> see [[wiki#SCM]]

h3. Classes

* *my.com.eCosway.migs.Commons* - Commons Constant

* *my.com.eCosway.migs.MigsInterface* - Data Persistence's Interface

* *my.com.eCosway.migs.MigsPaymentUtils* - Utility class

* *my.com.eCosway.migs.MigsProperties* - Data model of MiGS properties

* *my.com.eCosway.migs.PaymentResponse* - Data model of MiGS's payment response

h3. Properties files

* */resources/properties/migs-hkd.properties* - MiGS's properties file (HKD currency)

** *account.accessCode* - VPC API's access code

** *account.hashSecret* - VPC API's hash secret code

** *account.merchantId* - MIGS merchant ID

** *vpc.twoParty.url* - the posting URL for the 2-party integration model

** *vpc.threeParty.url* - the posting URL for the 3-party integration model

** *vpc.version* - the VPC version

h3. Test Pages

<pre>

/migs-sample/migs_debug.jsp - to debug the payment response which returned by MiGS

/migs-sample/migs_receipt.jsp - a very simple receipt page

/migs-sample/migs_test.html - a payment test page

/migs-sample/migs_test.jsp - controller for the payment test page

</pre>

h3. Third-Party Library

* *log4j* - for logging purpose; bundled with Jboss AS

h2. Tables Used

* *ECOS.MIGS_INTERFACE* - This table schema is identical to *ECOS.EASYPAY_INTERFACE*.

<pre>

<code class="SQL">

CREATE TABLE ecos.migs_interface  (

                  "CCORNBR" VARCHAR(15) NOT NULL ,

                  "TRX_TYPE" VARCHAR(5) ,

                  "SHRFNBR" INTEGER ,

                  "CARD_TYPE" VARCHAR(10) ,

                  "CURRENCY" VARCHAR(3) ,

                  "CHARGE_AMT" DECIMAL(15,2) ,

                  "STATUS" VARCHAR(5) ,

                  "BANK_APPRCODE" VARCHAR(8) ,

                  "MALL_IND" CHAR(1) ,

                  "DATETIME" TIMESTAMP ,

                  "ERROR_MSG" VARCHAR(155) ,

                  "UXID" VARCHAR(30) ,

                  "REVERSE_FLAG" CHAR(1) );

ALTER TABLE ecos.migs_interface

        ADD PRIMARY KEY

                ("CCORNBR");

</code>

</pre>

h2. How To Integrate

To integrate with the MiGS, one must:

* *Redirect* the customer to the MiGS payment page

* *Capture* the payment response which returned by MiGS, after the customer submitted the payment

One could refer to the following page for demo:

> http://192.168.2.68/ecosway/migs-sample/migs_test.html

*To generate the redirect URL*:

* *Example:* 

<pre>

<code class="java">

String redirectUrl = MigsPaymentUtils.genRedirectUrl(MigsCurrency.HKD,

				locale,

				orderNo,

				amount, 

				returnUrl);

</code>

</pre>

** *redirectUrl* - redirect the user/customer to this URL to make payment

** *MigsCurrency.HKD* - the currency of the payment

** *locale* - the display language of the MiGS payment page, e.g. en_US

*** *English* - en, en_US

*** *Simplified Chinese* - zh_CN

*** *Traditional Chinese* - zh_TW

** *orderNo* - the unique order number (1-40 alphanumeric)

** *amount* - the amount of the payment in cents (1-12 numeric)

** *returnUrl* - MiGS will redirect the user to this page after made the payment (1-255 alphanumeric)

*To capture the payment result:*

* *Example:*

<pre>

<code class="java">

String orderNo = MigsPaymentUtils.persistPaymentStatus(connection, request);

</code>

</pre>

** *orderNo* - the order number of the payment

** *connection* - an established database connection where the payment interface table resides, e.g. MIGS_INTERFACE

** *request* - the *HTTPServletRequest* object

* Refer to the *STATUS* column in the interface table to check if the payment is success

** *YES* - success

** *NO* - failed

*** _refer to *ERROR_MSG* column in the interface table for more details_