Merge branch 'hotfix/statement_export' into 'master'

Merge of hotfix/statement_export 修复查询视图导出数字0为空的问题 to master

See merge request o2oa/o2oa!1090

o2web/source/x_component_query_Query/Statement.js

@@ -688,9 +688,12 @@ MWF.xApplication.query.Query.Statement = MWF.QStatement = new Class({
             if ((/(^[1-9]\d*$)/.test(p))) p = p.toInt();
             if (obj[p]) {
                 obj = obj[p];
-            } else {
+            } else if(obj[p] === undefined || obj[p] === null) {
                 obj = "";
                 break;
+            } else {
+                obj = obj[p];
+                break;
             }
         }
         return obj