[fix]:方法无参时报空指针异常，issue：Snailclimb#49

Bond37 · Nov 28, 2022 · bf5ee8e · bf5ee8e
1 parent 6d09165
commit bf5ee8e
Showing 1 changed file with 2 additions and 5 deletions.
diff --git a/...re/src/main/java/github/javaguide/loadbalance/loadbalancer/ConsistentHashLoadBalance.java b/...re/src/main/java/github/javaguide/loadbalance/loadbalancer/ConsistentHashLoadBalance.java
@@ -7,10 +7,7 @@
 import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Map;
-import java.util.TreeMap;
+import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 
 /**
@@ -34,7 +31,7 @@ protected String doSelect(List<String> serviceAddresses, RpcRequest rpcRequest)
             selectors.put(rpcServiceName, new ConsistentHashSelector(serviceAddresses, 160, identityHashCode));
             selector = selectors.get(rpcServiceName);
         }
-        return selector.select(rpcServiceName + Arrays.stream(rpcRequest.getParameters()));
+        return selector.select(rpcServiceName + Arrays.stream(Optional.ofNullable(rpcRequest.getParameters()).orElseGet(() -> new Object[0])));
     }
 
     static class ConsistentHashSelector {