微信公众号的scancode_push怎么获取的ScanCodeInfo 搜索为空，请大神指教

[org.dom4j.tree.DefaultElement@62e8dfd [Element: ], org.dom4j.tree.DefaultElement@188b5391 [Element: ], org.dom4j.tree.DefaultElement@5e731333 [Element: ], org.dom4j.tree.DefaultElement@24cfe189 [Element: ], org.dom4j.tree.DefaultElement@567cc188 [Element: ], org.dom4j.tree.DefaultElement@1429170d [Element: ], org.dom4j.tree.DefaultElement@52856430 [Element: ]]