java - 从 Xalan 捕获异常

Question

我有一个 Java 程序(目前在 JDK 1.5 中运行)，它在使用 Xalan 处理 XSLT 样式表时出现奇怪的异常。我不是在寻找如何解决异常:网上有很多关于这个的信息。我只想知道如何在我的代码中捕获异常:

    try {
        TransformerFactory tf = TransformerFactory.newInstance();
        Source src = new SAXSource(new InputSource(new FileInputStream("doc.xsl")));
        Transformer t = tf.newTransformer(src);
        System.out.println(t);
    } catch (TransformerConfigurationException e) {
        System.out.println("the exception was " + e + " and its cause is " + e.getCause());
    }

和输出:

com.sun.org.apache.bcel.internal.generic.ClassGenException: Branch target offset too large for short
at com.sun.org.apache.bcel.internal.generic.BranchInstruction.dump(BranchInstruction.java:99)
at com.sun.org.apache.bcel.internal.generic.InstructionList.getByteCode(InstructionList.java:980)
at com.sun.org.apache.bcel.internal.generic.MethodGen.getMethod(MethodGen.java:616)
at com.sun.org.apache.xalan.internal.xsltc.compiler.Mode.compileNamedTemplate(Mode.java:556)
at com.sun.org.apache.xalan.internal.xsltc.compiler.Mode.compileTemplates(Mode.java:566)
at com.sun.org.apache.xalan.internal.xsltc.compiler.Mode.compileApplyTemplates(Mode.java:818)
at com.sun.org.apache.xalan.internal.xsltc.compiler.Stylesheet.compileModes(Stylesheet.java:615)
at com.sun.org.apache.xalan.internal.xsltc.compiler.Stylesheet.translate(Stylesheet.java:730)
at com.sun.org.apache.xalan.internal.xsltc.compiler.XSLTC.compile(XSLTC.java:354)
at com.sun.org.apache.xalan.internal.xsltc.compiler.XSLTC.compile(XSLTC.java:429)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl.newTemplates(TransformerFactoryImpl.java:792)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl.newTransformer(TransformerFactoryImpl.java:614)
at main.Main.main(Main.java:61)
ERROR:  'Branch target offset too large for short'
FATAL ERROR:  'Could not compile stylesheet'
the exception was javax.xml.transform.TransformerConfigurationException: Could not compile stylesheet and its cause is null

我想要做的是捕获内部异常 - ClassGenException - 在我的代码中。像上面那样简单地将它打印到 STDERR 在我的应用程序中没有用。有没有办法做到这一点？

Answer 1

您是否尝试在 TransformerFactory 上设置 ErrorListener ？

    tf.setErrorListener(new ErrorListener() {

        @Override
        public void warning(TransformerException exception) throws TransformerException {
            ...
        }

        @Override
        public void fatalError(TransformerException exception) throws TransformerException {
            ...

        }

        @Override
        public void error(TransformerException exception) throws TransformerException {
            ...

        }
    });

您的 ClassGenException 可能通过 exception.getCause() 获得.