不是用QStringRef，太容易出错。

Signed-off-by: facat@lab.com <facat@lab.com>

testHasttable/main.cpp

@@ -7,6 +7,8 @@ int main(int argc, char *argv[])
     QCoreApplication a(argc, argv);
     ElementHashtable eleReader;
     eleReader.parse("D:/Project/佛山项目/佛山收资/exportmodel_pw/df8003/df8600/exportfiles/exportmodel_pw.xml");
+//    eleReader.parse("D:/Project/佛山项目/佛山收资/按元素分/BusbarSectionb.xml");
+    eleReader.goPath();
 //    RegexExtract regexExt;
 //    regexExt.extract("D:/Project/佛山项目/佛山收资/exportmodel_pw/df8003/df8600/exportfiles/exportmodel_pw.xml");
 //    regexExt.exportBlocks("ThermalGeneratingUnit.xml");