Programming Guide » History » Version 20
chin-yeh, 02/21/2012 10:04 AM
| 1 | 2 | chin-yeh | {{toc}} |
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| 2 | |||
| 3 | 1 | chin-yeh | h1. Programming Guide |
| 4 | 2 | chin-yeh | |
| 5 | Describes how to integrate the mPay into online mall. |
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| 6 | |||
| 7 | 15 | chin-yeh | *Steps-by-steps:* (_see also [[Specification#Suggested-Payment-Flow|Payment Flow]]_) |
| 8 | 11 | chin-yeh | # First, refer to the [[Programming_Guide#Generate-Redirect-URL|Generate Redirect URL]] section on how to generate the redirect URL |
| 9 | # And then, include the method, [[Programming_Guide#Capture-Payment-Status|Capture Payment Status]] in the return/receipt page to capture & persist the payment status |
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| 10 | 12 | chin-yeh | # Finally, query the [[Specification#Tables-Used|MPAY_INTERFACE]] table to get the payment status. |
| 11 | 11 | chin-yeh | |
| 12 | 14 | chin-yeh | *Libraries needed:* |
| 13 | * Java cryptography API - http://192.168.2.13:50000/redmine/attachments/download/218/bcprov-jdk14-125.jar |
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| 14 | * mPay: |
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| 15 | ** http://192.168.2.13:50000/redmine/attachments/download/219/MerchantAdmin.jar |
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| 16 | ** http://192.168.2.13:50000/redmine/attachments/download/220/MerchantClient.jar |
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| 17 | |||
| 18 | 4 | chin-yeh | *Demo application:* |
| 19 | * Generate Redirect URL (for hosted payment form) |
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| 20 | > http://192.168.2.68/ecosway/mpay-sample/payment_form.html |
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| 21 | 5 | chin-yeh | * Query Payment Status: |
| 22 | 4 | chin-yeh | > http://192.168.2.68/ecosway/mpay-sample/query.html |
| 23 | 3 | chin-yeh | |
| 24 | 2 | chin-yeh | h2. Source files |
| 25 | |||
| 26 | > Get the source files from [[wiki#SCM|SCM]]. |
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| 27 | |||
| 28 | *Files:* |
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| 29 | * my.com.eCosway.mpay |
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| 30 | ** Commons - list of common constant |
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| 31 | ** MpayInterfaceUtils - an utility to perform data persistence related operation |
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| 32 | ** MpayPaymentUtils - the mPay APIs |
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| 33 | ** MpayProperties - data model of the mPay properties |
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| 34 | ** PaymentRequest - data model of the mPay's payment request |
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| 35 | ** PaymentResponse - data model of the mPay's payment response |
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| 36 | 17 | chin-yeh | * resources.properties |
| 37 | 2 | chin-yeh | ** mpay.properties - the application properties file |
| 38 | 8 | chin-yeh | * source file of demo application (JSP): |
| 39 | ** mpay-sample folder |
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| 40 | 5 | chin-yeh | |
| 41 | h2. Generate Redirect URL |
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| 42 | |||
| 43 | 6 | chin-yeh | Generates the URL which will be used to redirect user to the mPay's hosted payment form. |
| 44 | |||
| 45 | 9 | chin-yeh | * *Method Signature:* |
| 46 | <pre> |
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| 47 | <code class="JAVA"> |
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| 48 | public static Map<String, String> genRedirectFormData(String orderNo, |
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| 49 | Date txnDate, String amount, String returnUrl, String locale, |
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| 50 | 18 | chin-yeh | PaymentMethod paymentMethod, CurrencyCode currencyCode) |
| 51 | 9 | chin-yeh | </code> |
| 52 | </pre> |
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| 53 | 10 | chin-yeh | * *Demo:* |
| 54 | ** [[Programming Guide]] |
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| 55 | 6 | chin-yeh | |
| 56 | 5 | chin-yeh | h3. Input Parameters |
| 57 | |||
| 58 | 6 | chin-yeh | * *orderNo* - the unique order number |
| 59 | * *txtDate* - the transaction date |
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| 60 | * *amount* - the transaction amount |
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| 61 | * *returnUrl* - mPay will redirect the user to this URL after made the payment |
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| 62 | * *locale* - the display language of the payment form |
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| 63 | 1 | chin-yeh | * *paymentMethod* - the payment method, e.g. _CUP_, _Alipay_ |
| 64 | 18 | chin-yeh | * *currencyCode* - the currency code, e.g. _RMB_, _HKD_ |
| 65 | 6 | chin-yeh | |
| 66 | h3. Output Parameters |
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| 67 | 1 | chin-yeh | |
| 68 | 7 | chin-yeh | Use the returned key-pair values to construct the *HTML form*. |
| 69 | 1 | chin-yeh | |
| 70 | 8 | chin-yeh | Due to the limit of the length of a URL, the recommended HTTP method is *POST*. This is because extremely long URL will not work in most popular browsers and most importantly the length of the query string is unknown. |
| 71 | 7 | chin-yeh | |
| 72 | *Returned key-pair values:* |
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| 73 | * *form_action* - the URL of the hosted payment form. To be placed in the *action* attribute of the form |
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| 74 | * *encmsg* - the encrypted message. To be placed in the input element |
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| 75 | * *sigmsg* - the signed message. To be placed in the input element |
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| 76 | * *certserial* - the serial number of the certificate. To be placed in the input element |
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| 77 | |||
| 78 | 5 | chin-yeh | h3. Code Snippets |
| 79 | 1 | chin-yeh | |
| 80 | 7 | chin-yeh | <pre> |
| 81 | <code class="JAVA"> |
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| 82 | <body> |
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| 83 | 1 | chin-yeh | |
| 84 | 7 | chin-yeh | <% |
| 85 | String orderNo = request.getParameter("order_no"); |
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| 86 | String txnDate = request.getParameter("txn_date"); |
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| 87 | String amount = request.getParameter("amount"); |
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| 88 | String returnUrl = request.getParameter("return_url"); |
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| 89 | String locale = request.getParameter("locale"); |
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| 90 | 1 | chin-yeh | String paymentMethod = request.getParameter("payment_method"); |
| 91 | 20 | chin-yeh | String currency = request.getParameter("currency"); |
| 92 | 7 | chin-yeh | |
| 93 | Date transactionDate = new SimpleDateFormat("yyyyMMddHHmmss").parse(txnDate); |
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| 94 | 1 | chin-yeh | PaymentMethod cardType = PaymentMethod.valueOf(paymentMethod); |
| 95 | 18 | chin-yeh | CurrencyCode currencyCode = CurrencyCode.valueOf(currency); |
| 96 | 7 | chin-yeh | |
| 97 | Map<String, String> formData = MpayPaymentUtils.genRedirectFormData( |
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| 98 | orderNo, |
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| 99 | transactionDate, |
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| 100 | amount, |
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| 101 | 1 | chin-yeh | returnUrl, |
| 102 | locale, |
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| 103 | 18 | chin-yeh | cardType, |
| 104 | 19 | chin-yeh | currencyCode); |
| 105 | 7 | chin-yeh | %> |
| 106 | |||
| 107 | <p> |
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| 108 | Redirecting you to the mPay payment form, it may takes up to 1 minute... |
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| 109 | 1 | chin-yeh | </p> |
| 110 | 7 | chin-yeh | |
| 111 | 9 | chin-yeh | <form name="form1" method="post" action="<%= formData.get("form_action") %>"> |
| 112 | 7 | chin-yeh | <input type=hidden name=encmsg value="<%=formData.get("encmsg")%>"/> |
| 113 | <input type=hidden name=sigmsg value="<%=formData.get("sigmsg")%>"/> |
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| 114 | <input type=hidden name=certserial value="<%=formData.get("certserial")%>"/> |
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| 115 | </form> |
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| 116 | |||
| 117 | <script language="javascript"> |
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| 118 | |||
| 119 | function submitForm(){ |
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| 120 | document.form1.submit(); |
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| 121 | } |
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| 122 | |||
| 123 | window.onload=submitForm ; |
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| 124 | |||
| 125 | </script> |
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| 126 | |||
| 127 | </body> |
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| 128 | </code> |
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| 129 | </pre> |
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| 130 | |||
| 131 | 13 | chin-yeh | h2. Capture Payment Status |
| 132 | |||
| 133 | *This method must be invoked in the very beginning of the receipt page.* |
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| 134 | |||
| 135 | The main purpose of this method is to parse the payment response (which returned by mPay) and then update the payment status for the corresponding order. |
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| 136 | |||
| 137 | * *Method Signature:* |
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| 138 | <pre> |
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| 139 | <code class="JAVA"> |
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| 140 | public static String parsePaymentResponse(Connection connection, HttpServletRequest httpRequest) |
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| 141 | </code> |
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| 142 | </pre> |
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| 143 | |||
| 144 | h3. Input Parameters |
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| 145 | |||
| 146 | * *connection* - an established database connection |
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| 147 | * *httpRequest* - the HttpServletRequest object. It can be obtained in the JSP or servlet |
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| 148 | |||
| 149 | |||
| 150 | h3. Output Parameters |
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| 151 | |||
| 152 | The returned value is the *order number* of the transaction. |
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| 153 | |||
| 154 | h3. Code Snippets |
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| 155 | |||
| 156 | <pre> |
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| 157 | <code class="JAVA"> |
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| 158 | <% |
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| 159 | Connection connection = null; |
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| 160 | String orderNo = ""; |
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| 161 | try { |
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| 162 | connection = createDbConnection("java:/DB2DS"); |
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| 163 | orderNo = MpayPaymentUtils.parsePaymentResponse(connection, request); |
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| 164 | } catch(Exception ex) { |
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| 165 | throw ex; |
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| 166 | } finally { |
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| 167 | if (connection != null) { |
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| 168 | connection.close(); |
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| 169 | } |
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| 170 | } |
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| 171 | |||
| 172 | %> |
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| 173 | </code> |
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| 174 | </pre> |
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| 175 | |||
| 176 | 7 | chin-yeh | |
| 177 | 1 | chin-yeh | h2. Query Payment Status |
| 178 | |||
| 179 | 10 | chin-yeh | Queries the payment status of the submitted transaction. |
| 180 | |||
| 181 | * *Method Signature:* |
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| 182 | <pre> |
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| 183 | <code class="JAVA"> |
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| 184 | public static PaymentResponse queryPaymentStatus(String orderNo) |
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| 185 | </code> |
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| 186 | </pre> |
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| 187 | * *Demo:* |
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| 188 | ** [[Programming Guide]] |
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| 189 | |||
| 190 | 1 | chin-yeh | h3. Input Parameters |
| 191 | |||
| 192 | 16 | chin-yeh | * *orderNo* - the order number of the submitted transaction |
| 193 | 10 | chin-yeh | |
| 194 | |||
| 195 | 1 | chin-yeh | h3. Output Parameters |
| 196 | |||
| 197 | 10 | chin-yeh | The fields of the returned object, *PaymentResponse*: |
| 198 | * *merchantId* - the merchant ID |
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| 199 | * *merchantTId* - the merchant terminal ID |
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| 200 | * *orderNo* - the order number |
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| 201 | * *systemDate* - the system date of mPay |
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| 202 | * *refNo* - the transaction ID of mPay |
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| 203 | * *amount* - the settlement amount |
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| 204 | * *currencyCode* - the currency of the settlement amount |
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| 205 | * *settlementDate* - the settlement date |
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| 206 | * *responseCode* - the response code |
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| 207 | * *authCode* - the bank authorization code if any |
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| 208 | * *transactionStatus* - indicate if it's success |
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| 209 | |||
| 210 | 7 | chin-yeh | h3. Code Snippets |
| 211 | 1 | chin-yeh | |
| 212 | <pre> |
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| 213 | <code class="JAVA"> |
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| 214 | 10 | chin-yeh | <% |
| 215 | PaymentResponse paymentResponse = MpayPaymentUtils.queryPaymentStatus(request.getParameter("order_no")); |
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| 216 | %> |
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| 217 | 7 | chin-yeh | </code> |
| 218 | </pre> |