How to Convert to Document with Encoding to GBK!

Question

I get a String from SOCKET,eg:
<?xml version="1.0" encoding="GBK"?>
<YHPP ACTION="YHPP_SEND">
     <needReply/>
     <msgLevel>1</msgLevel>
     <serviceID>ECMY</serviceID>
     <msgFormat>15</msgFormat>
     <feeType>01</feeType>
     <feeCode>000010</feeCode>
     <validTime>0</validTime>
     <atTime>0</atTime>
     <srcTermID/>
     <destTermID/>
     <msgLen>70</msgLen>
     <msgContent>��������</msgContent>
     <msgID/>
     <msg_IDBM/>
     <feeUserType>3</feeUserType>
     <feeTerminalId/>
     <tpPid>0</tpPid>
     <tpUdhi>0</tpUdhi>
     <ipAddr>192.168.0.59</ipAddr>
</YHPP>
and I hava use org.w3c.dom.Document doc = javax.xml.parsers.DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(new ByteArrayInputStream(str.getBytes()));
this method to Convert to Document,but System print error
org.xml.sax.SAXParseException: Invalid encoding name "GBK".
? How to ??????????Help

Answer 1

Tell the people sending you that string to encode it in some other encoding. Or write your own little program to read it in and write it out in some other encoding before feeding it to the parser.