update example

Author: chengliang.zhang

example/src/main/java/com/pingxx/example/Main.java

@@ -3,6 +3,7 @@
 import com.pingplusplus.Pingpp;
 
 import java.math.BigInteger;
+import java.net.URL;
 import java.security.SecureRandom;
 
 /**
@@ -30,6 +31,8 @@ public class Main {
     // 你生成的私钥路径
     private final static String privateKeyFilePath = "res/your_rsa_private_key_pkcs8.pem";
 
+    private final static String verifyKeyFilePath = "pingpp_public_key.pem";
+
     protected static String projectDir;
 
     public static void main(String[] args) throws Exception {
@@ -43,12 +46,15 @@ public static void main(String[] args) throws Exception {
         // 设置私钥路径，用于请求签名
         //Pingpp.privateKeyPath = projectDir + privateKeyFilePath;
 
-        /**
+        /*
          * 或者直接设置私钥内容
-         Pingpp.privateKey = "... PKCS8私钥内容字符串 ...";
+         * Pingpp.privateKey = "... PKCS8私钥内容字符串 ...";
          */
         Pingpp.privateKey = "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";
 
+        //（可选，推荐设置）设置响应验证公钥，用于验证响应是否真实有效；不设置或设置密钥错误将不验签
+        Pingpp.setVerifyPublicKeyPath(getResPath(verifyKeyFilePath));
+
         // Charge 示例
         ChargeExample.runDemos(appId);
 
@@ -82,13 +88,21 @@ public static void main(String[] args) throws Exception {
         CustomsExample.runDemos(appId);
     }
 
-    private static SecureRandom random = new SecureRandom();
+    private static final SecureRandom random = new SecureRandom();
 
     public static String randomString(int length) {
         String str = new BigInteger(130, random).toString(32);
         return str.substring(0, length);
     }
 
+    public static String getResPath(String subPath) {
+        if (subPath == null) {
+            throw new NullPointerException();
+        }
+        URL resource = Thread.currentThread().getContextClassLoader().getResource(subPath);
+        return resource != null ? resource.getPath() : subPath;
+    }
+
     public static int currentTimeSeconds() {
         return (int) (System.currentTimeMillis() / 1000);
     }