java 使用 DocumentBuilder.parse 解析格式正确的 XML 时如何关闭验证？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/9911348/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
提示：将鼠标放在中文语句上可以显示对应的英文。显示中英文
时间：2020-10-30 22:52:30 来源:igfitidea点击:
How do I turn off validation when parsing well-formed XML using DocumentBuilder.parse?
提问by Dave
I'm using Java 6. I want to parse XHTML that I know is well-formed. As such, I don't want to do any validation against DTD's or other schemas referenced in the doc. However, I'm having trouble figuring out how to turn that validation off. I have
我使用的是 Java 6。我想解析我知道格式正确的 XHTML。因此，我不想对文档中引用的 DTD 或其他模式进行任何验证。但是，我无法弄清楚如何关闭该验证。我有
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setValidating(false);
final DocumentBuilder b = factory.newDocumentBuilder();
final InputSource s = new InputSource(new StringReader(str));
org.w3c.dom.Document result = b.parse(s);
But I still get an exception on the last line ...
但我仍然在最后一行出现异常......
java.net.SocketException: Unexpected end of file from server
at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:777)
at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640)
at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:774)
at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:640)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1195)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:677)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startEntity(XMLEntityManager.java:1315)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startDTDEntity(XMLEntityManager.java:1282)
at com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.setInputSource(XMLDTDScannerImpl.java:283)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(XMLDocumentScannerImpl.java:1194)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(XMLDocumentScannerImpl.java:1090)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:1003)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:235)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:284)
at com.myco.myproj.util.XmlUtilities.getStringAsDocument(XmlUtilities.java:130)
at com.myco.myproj.util.NetUtilities.getUrlAsDocument(NetUtilities.java:30)
at com.myco.myproj.parsers.impl.AbstractChicagoReaderParser.parsePage(AbstractChicagoReaderParser.java:144)
at com.myco.myproj.parsers.impl.AbstractChicagoReaderParser.getEvents(AbstractChicagoReaderParser.java:112)
at com.myco.myproj.parsers.impl.ChicagoReaderParserTest.testParser(ChicagoReaderParserTest.java:29)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setValidating(false);
final DocumentBuilder builder = factory.newDocumentBuilder();
builder.setEntityResolver(new EntityResolver() {
@Override
public InputSource resolveEntity(String publicId, String systemId) {
return null;
}
});
final InputSource s = new InputSource(new StringReader(str));
org.w3c.dom.Document result = builder.parse(s);
0(ParentRunner.java:42)
at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
I don't want my parser going to the Internet. How do I disable that? Thanks, - Dave
我不希望我的解析器访问 Internet。我如何禁用它？谢谢， - 戴夫
Edit:Per Traroth's suggestion, I tried the below code, but get the same exception
编辑：根据 Traroth 的建议，我尝试了以下代码，但得到相同的异常
final DocumentBuilder builder = factory.newDocumentBuilder();
builder.setEntityResolver(new EntityResolver() {
@Override
public InputSource resolveEntity(String publicId, String systemId) {
// it might be a good idea to insert a trace logging here that you are ignoring publicId/systemId
return new InputSource(new StringReader("")); // Returns a valid dummy source
}
});
采纳答案by Alexis Dufrenoy
Probably related to an EntityResolver issue. You can take a look here:
可能与 EntityResolver 问题有关。你可以看看这里：
回答by Morten
Here is how you create a DocumentBuilder that will ignore ALL external referenced entities, including DTDs:
下面是创建一个忽略所有外部引用实体（包括 DTD）的 DocumentBuilder 的方法：
##代码##