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				@@ -605,10 +605,13 @@ public class BaseCameraManagementController extends BaseController { 
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				     public AjaxResult cameraTree(@RequestParam(value = "name", required = false) String name, 
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				                                  @RequestParam(value = "lineDir", required = false) Integer lineDir, 
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				                                  @RequestParam(value = "beginMile", required = false) String mils) { 
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				-        if (!mils.matches(PATTERN)) { 
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				-            return error("里程位置填写格式不正确!"); 
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				+        Integer milsInt = null; 
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				+        if (!StringUtils.isEmpty(mils)) { 
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				+            if (!mils.matches(PATTERN)) { 
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				+                return error("里程位置填写格式不正确!"); 
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				+            } 
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				+            milsInt = AppendUtils.stringSplit(mils); 
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				         } 
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				-        Integer milsInt = AppendUtils.stringSplit(mils); 
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				         CameraTree cameraTree = baseDeviceDynamicManagementService.cameraTree(name, lineDir, milsInt); 
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				         List<CameraTree> children = cameraTree.getChildren(); 
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				         children.sort(new Comparator<CameraTree>() { 
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