2023年5月31日12:55:53 获取did方式改为随机获取一个

王明元
1 parent cce44df3
Showing 1 changed file with 17 additions and 3 deletions
src/main/java/cn/fw/freya/service/crawl/impl/Common.java
@@ -41,6 +41,8 @@ import org.springframework.transaction.annotation.Transactional;
 import org.springframework.util.CollectionUtils;
  
 import java.io.IOException;
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
 import java.util.*;
 import java.util.logging.Level;
 import java.util.stream.Collectors;
@@ -365,9 +367,21 @@ public class Common {
                 .list();
         if (did.isEmpty())
             return null;
-        Random random = new Random();
-        int index = random.nextInt(did.size() - 1);
-        return did.get(index).getValue();
+        if (Objects.equals(did.size(), 1))
+            return did.get(0).getValue();
+        try {
+            Random random = SecureRandom.getInstanceStrong();
+            int index = random.nextInt(did.size() - 1);
+            return did.get(index).getValue();
+        } catch (Exception e) {
+            return null;
+        }
+    }
+
+    public static void main(String[] args) throws NoSuchAlgorithmException {
+        Random random = SecureRandom.getInstanceStrong();
+        int index = random.nextInt(5 - 1);
+        System.out.println(index);
     }
  
     /**