An invalid or illegal XML character is specified.

[ZHANGJNWEI]

FileReader file = new FileReader(m_dataFileName);
// Call the org.apache.xml.soap.XMLParseUtils class's
// getXMLDocBullder results DocumentBilder object
DocumentBuilder xdb = new XMLParserUtils().getXMLDocBuilder();

// Through the parsrMachine reap the Document object
Document doc = xdb.parse(new InputSource(file));
源代码中解析文件的代码；
GenericHTTPSoapClient trans = new GenericHTTPSoapClient("http://localhost:8070/com", DEFAULT_DATA_FILENAME )
main 函数中文件： URL 地址影响文件解析吗？
<?xml version="1.0" encoding="UTF-8"?>

<PurchaseOrder xmlns="urn:oreilly-jaws-samples">

<shipTo country="US">

<name>Joe Smith</name>

<street>14 Oak Park</street>

<city>Bedford</city>

<state>MA</state>

<zip>01730</zip>

</shipTo>

<items>

<item partNum="872-AA">

<productName>Candy Canes</productName>

<quantity>444</quantity>

<price>1.68</price>

<comment>I want candy!</comment>

</item>

</items>
这是要解析的xml文件
出现INVALID_CHARACTER_ERR: An invalid or illegal XML character is specified. 求问原因？