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				@@ -1619,8 +1619,10 @@ public class MusicGroupServiceImpl extends BaseServiceImpl<String, MusicGroup> i 
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				         sysMessageService.batchSeoMessage(integers, 
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				                 MessageTypeEnum.BACKSTAGE_STUDENT_APPLY_QUIT_GROUP, JSONObject.toJSONString(memo), sysUser.getUsername()); 
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				-        Map<Integer, String> receivers = new HashMap<>(1); 
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				-        receivers.put(musicGroup.getEducationalTeacherId(), musicGroup.getEducationalTeacherId().toString()); 
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				+        Map<Integer, String> receivers = new HashMap<>(integers.size()); 
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				+        for (Integer integer : integers) { 
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				+            receivers.put(integer, integer.toString()); 
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				+        } 
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				         sysMessageService.batchSendMessage(MessageSender.JIGUANG, MessageTypeEnum.PUSH_STUDENT_COMMIT_QUIT_MUSIC_APPLY, 
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				                 receivers, null, 0, null, "SYSTEM", musicGroup.getName(), sysUser.getUsername()); 
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				         return true; 
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