在Eclipse配置并编译worldwind java2.1.0源码，选中Src目录下gov.nasa.worldwindx.examples包下ApplicationTemplate.java类文件run时提示“javax.xml.parsers.DocumentBuilderFactory.setFeature(Ljava/lang/String;Z)V”异常的解决办法

问题现象：

在Eclipse配置并编译worldwind java2.1.0源码，选中Src目录下gov.nasa.worldwindx.examples包下ApplicationTemplate.java类文件run时提示“javax.xml.parsers.DocumentBuilderFactory.setFeature(Ljava/lang/String;Z)V”异常。

解决办法：

1、定位到报错的方法为WWXML.java文件中的createDocumentBuilder方法：

public static DocumentBuilder createDocumentBuilder(boolean isNamespaceAware)
    {
        DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
        docBuilderFactory.setNamespaceAware(isNamespaceAware);
        if (Configuration.getJavaVersion() >= 1.6)
        {
            try
            {
                docBuilderFactory.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd",
                    false);
            }
            catch (ParserConfigurationException e)
            {   // Note it and continue on. Some Java5 parsers don't support the feature.
                String message = Logging.getMessage("XML.NonvalidatingNotSupported");
                Logging.logger().finest(message);
            }
        }

        try
        {
            return docBuilderFactory.newDocumentBuilder();
        }
        catch (ParserConfigurationException e)
        {
            String message = Logging.getMessage("XML.ParserConfigurationException");
            Logging.logger().finest(message);
            throw new WWRuntimeException(e);
        }
    }

2、在该方法中标注黄色的一句代码DocumentBuilderFactory.newInstance()前面使用前加入如下一行代码：

System.setProperty("javax.xml.parsers.DocumentBuilderFactory", "com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl");

3、完整代码如下：

public static DocumentBuilder createDocumentBuilder(boolean isNamespaceAware)
    {
        System.setProperty("javax.xml.parsers.DocumentBuilderFactory", "com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl");
        DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();

        docBuilderFactory.setNamespaceAware(isNamespaceAware);

        if (Configuration.getJavaVersion() >= 1.6)
        {
            try
            {
                docBuilderFactory.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd",
                    false);
            }
            catch (ParserConfigurationException e)
            {   // Note it and continue on. Some Java5 parsers don't support the feature.
                String message = Logging.getMessage("XML.NonvalidatingNotSupported");
                Logging.logger().finest(message);
            }
        }

        try
        {
            return docBuilderFactory.newDocumentBuilder();
        }
        catch (ParserConfigurationException e)
        {
            String message = Logging.getMessage("XML.ParserConfigurationException");
            Logging.logger().finest(message);
            throw new WWRuntimeException(e);
        }
    }

参考链接：

1、解决javax.xml.parsers.DocumentBuilderFactory.setFeature(Ljava/lang/String;Z)V异常

2、Exception in thread "main" java.lang.AbstractMethodError: org.apache.crimson.tree.ElementNode.getTextContent()Ljava/lang/String;