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				@@ -147,7 +147,15 @@ public class ClassGroupServiceImpl extends BaseServiceImpl<Integer, ClassGroup> 
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				 	} 
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				 	@Override 
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				-	public boolean createClassGroup(ClassGroup classGroup) { 
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				+    @Transactional(propagation = Propagation.REQUIRED, rollbackFor = Exception.class) 
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				+	public boolean create(ClassGroup classGroup) { 
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				+		 
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				+		if(classGroup.getType() == null){ 
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				+			throw new BizException("班级类型不能为空"); 
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				+		} 
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				+		if(classGroup.getGroupType() == null){ 
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				+			throw new BizException("课程组类型不能为空"); 
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				+		} 
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				         String userIds = classGroup.getUserIds(); 
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				         if(StringUtils.isBlank(userIds)){ 
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