Parse Exception with JAXP....

Question

Hi.....
When I use JAXP to parse the next xml file:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE Login SYSTEM "login.dtd">
<Login>
<username>tony</username>
<password>abc123</password>
</Login>
It will throw SAXParseException: 'No such related URI "login.dtd"'
/* code */
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource src = new InputSource(new BufferedReader(new FileReader(new File("classes/xml/file/login.xml"))));
doc = db.parse(src);
But If I change the InputSource into File it will run well:
/* code */
File docFile = new File("classes/xml/file/login.xml");
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
doc = db.parse(docFile );
If I need to parse xml messages from remote server, it means the message can't be changed and it don't exist in any file. How to parse the message with 'InputSource' or other? How to ignore "<!DOCTYPE Login SYSTEM "login.dtd">" in the message when parsing?

Answer 1

I tried use EntityResolver but it didn't work.
I just want the message to be parsed. And the message is got from remote server, so I don't need to read the dtd file.
How to prevent DTD from being accessed?
I use MyResolver class to setEntityResolver, but it didn't work .....
class MyResolver implements EntityResolver {
public InputSource resolveEntity(String publicId, String systemId) {
StringReader strReader = new StringReader("This is a custom entity");
if (systemId.equals("login.dtd") {
System.out.println("Resolving entity: " + systemId);
return new InputSource(new ByteArrayInputStream("<?xml version='1.0' encoding='UTF-8'?>".getBytes()));
} else {
return null;
Please help!!!!!