神马文学网java.net.MalformedURLException: unknown protocol: dummy异常
来源：百度文库 编辑：神马文学网 时间：2024/04/29 17:21:48
查找您系统下是否有一个gnujaxp.jar文件，并删除它。
The gnujaxp.jar file is most easily installed in $JAVA_HOME/jre/lib/ext; otherwise you may prefer to modify your CLASSPATH. If you have other JAXP parsers installed you may also wish to set up $JAVA_HOME/jre/lib/jaxp.properties so the GNU JAXP drivers are used by default:
# make JAXP clients prefer the GNU implementations
javax.xml.parsers.SAXParserFactory=gnu.xml.aelfred2.JAXPFactory
javax.xml.parsers.DocumentBuilderFactory=gnu.xml.dom.DomDocumentBuilderFactory
javax.xml.transform.TransformerFactory=gnu.xml.transform.TransformerFactoryImpl
javax.xml.xpath.XPathFactory=gnu.xml.xpath.XPathFactoryImpl
Alternatively, you may specify the use of the experimental libxmlj implementations, as follows:
javax.xml.parsers.SAXParserFactory=gnu.xml.libxmlj.sax.GnomeSAXParserFactory
javax.xml.parsers.DocumentBuilderFactory=gnu.xml.libxmlj.dom.GnomeDocumentBuilderFactory
javax.xml.transform.TransformerFactory=gnu.xml.libxmlj.transform.GnomeTransformerFactory
If you are using the portable SAX2 bootstrapping APIs, you may want to set the org.xml.sax.driver system property on each JVM invocation to be gnu.xml.aelfred2.SAXDriver (non-validating) or gnu.xml.aelfred2.XmlReader (optionally validating). Otherwise the org.xml.sax.helpers.XMLReaderFactory may not return the parser you expect.
If using GNU JAXP as part of GNU Classpath, no configuration should be necessary.
The gnujaxp.jar file is most easily installed in $JAVA_HOME/jre/lib/ext; otherwise you may prefer to modify your CLASSPATH. If you have other JAXP parsers installed you may also wish to set up $JAVA_HOME/jre/lib/jaxp.properties so the GNU JAXP drivers are used by default:
# make JAXP clients prefer the GNU implementations
javax.xml.parsers.SAXParserFactory=gnu.xml.aelfred2.JAXPFactory
javax.xml.parsers.DocumentBuilderFactory=gnu.xml.dom.DomDocumentBuilderFactory
javax.xml.transform.TransformerFactory=gnu.xml.transform.TransformerFactoryImpl
javax.xml.xpath.XPathFactory=gnu.xml.xpath.XPathFactoryImpl
Alternatively, you may specify the use of the experimental libxmlj implementations, as follows:
javax.xml.parsers.SAXParserFactory=gnu.xml.libxmlj.sax.GnomeSAXParserFactory
javax.xml.parsers.DocumentBuilderFactory=gnu.xml.libxmlj.dom.GnomeDocumentBuilderFactory
javax.xml.transform.TransformerFactory=gnu.xml.libxmlj.transform.GnomeTransformerFactory
If you are using the portable SAX2 bootstrapping APIs, you may want to set the org.xml.sax.driver system property on each JVM invocation to be gnu.xml.aelfred2.SAXDriver (non-validating) or gnu.xml.aelfred2.XmlReader (optionally validating). Otherwise the org.xml.sax.helpers.XMLReaderFactory may not return the parser you expect.
If using GNU JAXP as part of GNU Classpath, no configuration should be necessary.
java.net.MalformedURLException: unknown protocol: dummy异常
java.net.MalformedURLException: unknown protocol: dummy异常
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