Question

我想使用javax.xml.transform.Transformer提供的setURIResolver回调函数。我已经实施了“解决方案”。功能但它没有被调用。

public class XSLMagic implements URIResolver {

public void DoXSLTransform(final File xslDoc, final File xmlDoc, final File resultDoc) {
    // Create the factory...
    TransformerFactory tf = TransformerFactory.newInstance();
    // Create the transformer object from 
    Transformer tr = tf.newTransformer(new StreamSource(xslDoc));

    tr.setURIResolver(this); // <--- THIS LINE doesn't seem to work.

    tr.transform(new StreamSource(xmlDoc), new StreamResult(resultDoc));
}

@Override
public Source resolve(String href, String base) throws TransformerException {
    System.out.print("resolve: " + href + " " + base + "\n");
    return null;
}
}

我已经测试过它没有被输出消息调用，也是通过在函数上设置调试点然后单步执行来调用。

我做错了什么？

Answer 1

在写这篇文章的时候找到答案......：）

在TransformerFactory上设置setURIResolver，而不是Transformer对象。

所以代码就是......

public class XSLMagic implements URIResolver {

public void DoXSLTransform(final File xslDoc, final File xmlDoc, final File resultDoc) {
    // Create the factory...
    TransformerFactory tf = TransformerFactory.newInstance();

    tf.setURIResolver(this); // WORKS - Set the URIResolver to the factory instead, 'resolve' function now called as expected.

    // Create the transformer object from 
    Transformer tr = tf.newTransformer(new StreamSource(xslDoc));       

    tr.transform(new StreamSource(xmlDoc), new StreamResult(resultDoc));
}

@Override
public Source resolve(String href, String base) throws TransformerException {
    System.out.print("resolve: " + href + " " + base + "\n");
    return null;
}
}

没有调用Java setURIResolver？

1 个答案: