ExtJS 报错Uncaught Ext.DomQuery.compile(): Error parsing selector. Parsing failed解决办法

ExtJS 报错Uncaught Ext.DomQuery.compile(): Error parsing selector. Parsing failed
我解析soap xml的时候，引用官方的reader，但是发现解析的时候报错Uncaught Ext.DomQuery.compile(): Error parsing selector. Parsing failed at "|Body" ，代码如下：
Reader.js:

Ext.define('Ext.data.soap.Reader', {

    extend: 'Ext.data.reader.Xml',

    alias: 'reader.soap',


    getData: function(data) {

        var envelope = data.documentElement,

            // we can't always assume that the Body element's namespace prefix is "soap",

            // but we can assume that it is the same as the envelope's namespace prefix

            prefix = envelope.prefix;


        return Ext.DomQuery.selectNode(prefix +'|Body', data);

    }

});

我的xml文件跟官网的例子中的非常相似，结构基本一致，但是不知道为什么就是解析不出数据,xml文件如下

<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">

<SOAP-ENV:Body>

<fjs1:GetDepartmentDataResponse xmlns:fjs1="http://www.digiwin.com.cn/tiptop/TIPTOPServiceGateWay">

<fjs1:response>

<fjs1:element>

<fjs1:gem01>00010</fjs1:gem01>

<fjs1:gem02>大陆10</fjs1:gem02>

<fjs1:gemacti>Y</fjs1:gemacti>

</fjs1:element>

<fjs1:element>

<fjs1:gem01>00011</fjs1:gem01>

<fjs1:gem02>大陆11</fjs1:gem02>

<fjs1:gemacti>Y</fjs1:gemacti>

</fjs1:element>

<fjs1:element>

<fjs1:gem01>00012</fjs1:gem01>

<fjs1:gem02>大陸12</fjs1:gem02>

<fjs1:gemacti>Y</fjs1:gemacti>

</fjs1:element>

<fjs1:element>

<fjs1:gem01>001</fjs1:gem01>

<fjs1:gem02>管理部</fjs1:gem02>

<fjs1:gemacti>N</fjs1:gemacti>

</fjs1:element>

<fjs1:element xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"></fjs1:element>

</fjs1:response>

</fjs1:GetDepartmentDataResponse>

</SOAP-ENV:Body>

</SOAP-ENV:Envelope>

官网例子的xml如下

<?xml version="1.0" encoding="UTF-8"?>

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">

    <soap:Body>

        <m:GetBlendersResponse xmlns:m="http://example.com/">

            <m:Blender>

                <m:id>1</m:id>

                <m:name>Total Blender Classic WildSide</m:name>

                <m:price>454.95</m:price>

            </m:Blender>

            <m:Blender>

                <m:id>2</m:id>

                <m:name>The Kitchen Mill</m:name>