1 | |||
2 | /* |
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3 | * To change this license header, choose License Headers in Project Properties. |
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4 | * To change this template file, choose Tools | Templates |
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5 | * and open the template in the editor. |
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6 | */ |
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7 | package com.github.theresasogunle; |
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8 | |||
9 | import java.nio.charset.StandardCharsets; |
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10 | import java.security.MessageDigest; |
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11 | import java.util.Arrays; |
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12 | import java.util.Base64; |
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13 | |||
14 | import java.util.HashMap; |
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15 | |||
16 | /** |
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17 | * |
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18 | * @author Theresa |
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19 | */ |
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20 | public class IntegrityChecksum { |
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21 | |||
22 | RaveConstant key=new RaveConstant(); |
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23 | private String amount, payment_method,custom_description; |
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Coding Style
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24 | private String custom_logo,country,currency,customer_email; |
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25 | private String customer_lastname,customer_firstname,customer_phone,txref; |
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26 | /** |
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27 | * |
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28 | * |
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29 | * @return String |
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30 | * |
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31 | */ |
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32 | |||
33 | |||
34 | public String integrityChecksum(){ |
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35 | HashMap payload=new HashMap(); |
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36 | |||
37 | payload.put("PBFPubKey" , RaveConstant.PUBLIC_KEY); |
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38 | payload.put("amount" ,this.getAmount()); |
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39 | payload.put("payment_method", this.getPayment_method()); |
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40 | payload.put("custom_description",this.getCustom_description()); |
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41 | payload.put("custom_logo",this.getCustom_logo()); |
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42 | payload.put("country", this.getCountry()); |
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43 | payload.put("currency", this.getCurrency()); |
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44 | payload.put ("customer_email", this.getCustomer_email()); |
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45 | payload.put( "customer_firstname", this.getCustomer_firstname()); |
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46 | payload.put("customer_lastname", this.getCustomer_lastname()); |
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47 | payload.put("customer_phone", this.getCustomer_phone()); |
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48 | payload.put( "txref",this.getTxref()); |
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49 | |||
50 | |||
51 | |||
52 | Object[] keys=payload.keySet().toArray(); |
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53 | Arrays.sort(keys); |
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54 | String hashedPayload = ""; |
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55 | |||
56 | |||
57 | for (Object key : keys) { |
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58 | hashedPayload+=payload.get(key); |
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59 | } |
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60 | String hashString = hashedPayload + RaveConstant.SECRET_KEY; |
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61 | String hash_string=""; |
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62 | |||
63 | try{ |
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64 | MessageDigest digest = MessageDigest.getInstance("SHA-256"); |
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65 | byte[] hash = digest.digest(hashString.getBytes(StandardCharsets.UTF_8)); |
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66 | hash_string=Base64.getEncoder().encodeToString(hash); |
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67 | // System.out.println(hash_string); |
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68 | }catch(Exception ex){} |
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Ignoring an Exception may lead to hard to find bugs. Consider logging or rethrowing the original exception. If you want to throw a different exception, you can set the original exception as its cause to preserve the stacktrace.
When instantiating a new Exception, you can set another Exception as its cause. See the Oracle documentation on Throwables. Usage example throw new Exception("Exception Message", originalException);
Complete Example: class ReThrowException {
public static void throwsException() {
try {
throw new Exception("I am the original exception");
} catch (final Exception e) {
throw new RuntimeException("I am the new exception", e);
}
}
public static void main(String[] args) {
try {
throwsException();
}
catch (final RuntimeException e) {
System.out.println(e.getMessage());
System.out.println("and my cause is: " + e.getCause().getMessage());
e.printStackTrace();
}
}
}
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69 | |||
70 | return hash_string; |
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71 | } |
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72 | |||
73 | /** |
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74 | * @return the amount |
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75 | */ |
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76 | public String getAmount() { |
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77 | return amount; |
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78 | } |
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79 | |||
80 | /** |
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81 | * @param amount the amount to set |
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82 | * @return IntegrityChecksum |
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83 | */ |
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84 | public IntegrityChecksum setAmount(String amount) { |
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85 | this.amount = amount; |
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86 | return this; |
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87 | } |
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88 | |||
89 | /** |
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90 | * @return the payment_method |
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91 | */ |
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92 | public String getPayment_method() { |
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93 | return payment_method; |
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94 | } |
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95 | |||
96 | /** |
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97 | * @param payment_method the payment_method to set |
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98 | * @return IntegrityChecksum |
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99 | */ |
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100 | public IntegrityChecksum setPayment_method(String payment_method) { |
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101 | this.payment_method = payment_method; |
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102 | return this; |
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103 | } |
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104 | |||
105 | /** |
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106 | * @return the custom_description |
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107 | */ |
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108 | public String getCustom_description() { |
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109 | return custom_description; |
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110 | } |
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111 | |||
112 | /** |
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113 | * @param custom_description the custom_description to set |
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114 | * @return IntegrityChecksum |
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115 | */ |
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116 | public IntegrityChecksum setCustom_description(String custom_description) { |
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117 | this.custom_description = custom_description; |
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118 | return this; |
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119 | } |
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120 | |||
121 | /** |
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122 | * @return the custom_logo |
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123 | * |
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124 | */ |
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125 | public String getCustom_logo() { |
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126 | return custom_logo; |
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127 | } |
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128 | |||
129 | /** |
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130 | * @param custom_logo the custom_logo to set |
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131 | * @return IntegrityChecksum |
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132 | */ |
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133 | public IntegrityChecksum setCustom_logo(String custom_logo) { |
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134 | this.custom_logo = custom_logo; |
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135 | return this; |
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136 | } |
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137 | |||
138 | /** |
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139 | * @return the country |
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140 | */ |
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141 | public String getCountry() { |
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142 | return country; |
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143 | } |
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144 | |||
145 | /** |
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146 | * @param country the country to set |
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147 | * @return IntegrityChecksum |
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148 | */ |
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149 | public IntegrityChecksum setCountry(String country) { |
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150 | this.country = country; |
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151 | return this; |
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152 | } |
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153 | |||
154 | /** |
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155 | * @return the currency |
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156 | */ |
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157 | public String getCurrency() { |
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158 | return currency; |
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159 | } |
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160 | |||
161 | /** |
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162 | * @param currency the currency to set |
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163 | * @return IntegrityChecksum |
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164 | */ |
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165 | public IntegrityChecksum setCurrency(String currency) { |
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166 | this.currency = currency; |
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167 | return this; |
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168 | } |
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169 | |||
170 | /** |
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171 | * @return the customer_email |
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172 | */ |
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173 | public String getCustomer_email() { |
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174 | return customer_email; |
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175 | } |
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176 | |||
177 | /** |
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178 | * @param customer_email the customer_email to set |
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179 | * @return IntegrityChecksum |
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180 | */ |
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181 | public IntegrityChecksum setCustomer_email(String customer_email) { |
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182 | this.customer_email = customer_email; |
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183 | return this; |
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184 | } |
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185 | |||
186 | /** |
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187 | * @return the customer_lastname |
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188 | */ |
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189 | public String getCustomer_lastname() { |
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190 | return customer_lastname; |
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191 | } |
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192 | |||
193 | /** |
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194 | * @param customer_lastname the customer_lastname to set |
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195 | * @return IntegrityChecksum |
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196 | */ |
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197 | public IntegrityChecksum setCustomer_lastname(String customer_lastname) { |
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198 | this.customer_lastname = customer_lastname; |
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199 | return this; |
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200 | } |
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201 | |||
202 | /** |
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203 | * @return the customer_firstname |
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204 | */ |
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205 | public String getCustomer_firstname() { |
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206 | return customer_firstname; |
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207 | } |
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208 | |||
209 | /** |
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210 | * @param customer_firstname the customer_firstname to set |
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211 | * @return IntegrityChecksum |
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212 | */ |
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213 | public IntegrityChecksum setCustomer_firstname(String customer_firstname) { |
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214 | this.customer_firstname = customer_firstname; |
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215 | return this; |
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216 | } |
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217 | |||
218 | /** |
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219 | * @return the customer_phone |
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220 | */ |
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221 | public String getCustomer_phone() { |
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222 | return customer_phone; |
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223 | } |
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224 | |||
225 | /** |
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226 | * @param customer_phone the customer_phone to set |
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227 | * @return IntegrityChecksum |
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228 | */ |
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229 | public IntegrityChecksum setCustomer_phone(String customer_phone) { |
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230 | this.customer_phone = customer_phone; |
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231 | return this; |
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232 | } |
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233 | |||
234 | /** |
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235 | * @return the txref |
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236 | */ |
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237 | public String getTxref() { |
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238 | return txref; |
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239 | } |
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240 | |||
241 | /** |
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242 | * @param txref the txref to set |
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243 | * @return IntegrityChecksum |
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244 | */ |
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245 | public IntegrityChecksum setTxref(String txref) { |
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246 | this.txref = txref; |
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247 | return this; |
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248 | } |
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249 | |||
250 | |||
251 | } |
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252 |