!390 update stream流工具类其他方法过滤null值

Merge pull request !390 from Bleachtred/Feat_5.X_07

ruoyi-common/ruoyi-common-core/src/main/java/org/dromara/common/core/utils/StreamUtils.java

@@ -72,7 +72,7 @@ public class StreamUtils {
             return CollUtil.newArrayList();
         }
         // 注意此处不要使用 .toList() 新语法 因为返回的是不可变List 会导致序列化问题
-        return collection.stream().sorted(comparing).collect(Collectors.toList());
+        return collection.stream().filter(Objects::nonNull).sorted(comparing).collect(Collectors.toList());
     }
 
     /**
@@ -89,7 +89,7 @@ public class StreamUtils {
         if (CollUtil.isEmpty(collection)) {
             return MapUtil.newHashMap();
         }
-        return collection.stream().collect(Collectors.toMap(key, Function.identity(), (l, r) -> l));
+        return collection.stream().filter(Objects::nonNull).collect(Collectors.toMap(key, Function.identity(), (l, r) -> l));
     }
 
     /**
@@ -108,7 +108,7 @@ public class StreamUtils {
         if (CollUtil.isEmpty(collection)) {
             return MapUtil.newHashMap();
         }
-        return collection.stream().collect(Collectors.toMap(key, value, (l, r) -> l));
+        return collection.stream().filter(Objects::nonNull).collect(Collectors.toMap(key, value, (l, r) -> l));
     }
 
     /**
@@ -126,7 +126,7 @@ public class StreamUtils {
             return MapUtil.newHashMap();
         }
         return collection
-            .stream()
+            .stream().filter(Objects::nonNull)
             .collect(Collectors.groupingBy(key, LinkedHashMap::new, Collectors.toList()));
     }
 
@@ -147,7 +147,7 @@ public class StreamUtils {
             return MapUtil.newHashMap();
         }
         return collection
-            .stream()
+            .stream().filter(Objects::nonNull)
             .collect(Collectors.groupingBy(key1, LinkedHashMap::new, Collectors.groupingBy(key2, LinkedHashMap::new, Collectors.toList())));
     }
 
@@ -168,7 +168,7 @@ public class StreamUtils {
             return MapUtil.newHashMap();
         }
         return collection
-            .stream()
+            .stream().filter(Objects::nonNull)
             .collect(Collectors.groupingBy(key1, LinkedHashMap::new, Collectors.toMap(key2, Function.identity(), (l, r) -> l)));
     }