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															@@ -43,9 +43,9 @@ public class SysUserDeviceServiceImpl extends BaseServiceImpl<Long, SysUserDevic 
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															 	@Override 
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															 	@Override 
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															 	public boolean bindDevice(String clientId, Long userId, String deviceNum) { 
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															 	public boolean bindDevice(String clientId, Long userId, String deviceNum) { 
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															 		String paramName; 
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															 		String paramName; 
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															-		if (StringUtils.equals(clientId, "STUDENT")) { 
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															+		if (StringUtils.equalsIgnoreCase(clientId, "STUDENT")) { 
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															 			paramName = "student_device_acc_num"; 
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															 			paramName = "student_device_acc_num"; 
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															-		} else if (StringUtils.equals(clientId, "TEACHER")) { 
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															+		} else if (StringUtils.equalsIgnoreCase(clientId, "TEACHER")) { 
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															 			paramName = "teacher_device_acc_num"; 
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															 			paramName = "teacher_device_acc_num"; 
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															 		}else { 
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															 		}else { 
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															 			return true; 
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															 			return true; 
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