以下是XML文件的一部分。我需要找到所有与其相关的分数的节点，并且所有SimplePredicates都会导致每个分数生成一个规则集 例如：
if (GRAVH.1 <= 2751.5996775) && (WV.unity <= 93.567676535) && (Zagreb <= 74)
{
score = 2.32
}
是否可以使用java xpath执行此操作 这是XML文件..
</MiningSchema>
<Node id="1">
<True/>
<Node id="2">
<SimplePredicate field="GRAVH.1" operator="lessOrEqual" value="2751.5996775"/>
<Node id="4">
<SimplePredicate field="WV.unity" operator="lessOrEqual" value="93.567676535"/>
<Node id="8">
<SimplePredicate field="Zagreb" operator="lessOrEqual" value="74"/>
<Node id="16" score="2.32">
<SimplePredicate field="VP.0" operator="lessOrEqual" value="6.047602111"/>
</Node>
<Node id="17">
<SimplePredicate field="VP.0" operator="greaterThan" value="6.047602111"/>
<Node id="28" score="2.832">
<SimplePredicate field="MOMI.Y" operator="lessOrEqual" value="838.9644494"/>
</Node>
<Node id="29" score="3.1075">
<SimplePredicate field="MOMI.Y" operator="greaterThan" value="838.9644494"/>
</Node>
</Node>
</Node>
<Node id="9">
<SimplePredicate field="Zagreb" operator="greaterThan" value="74"/>
<Node id="18" score="3.4">
<SimplePredicate field="SP.0" operator="lessOrEqual" value="11.10848385"/>
</Node>
<Node id="19">
<SimplePredicate field="SP.0" operator="greaterThan" value="11.10848385"/>
<Node id="30" score="3.81333333333333">
<SimplePredicate field="MobCSA" operator="lessOrEqual" value="135.12"/>
</Node>
<Node id="31" score="4.04">
<SimplePredicate field="MobCSA" operator="greaterThan" value="135.12"/>
</Node>
</Node>
</Node>
</Node>
<Node id="5">
<SimplePredicate field="WV.unity" operator="greaterThan" value="93.567676535"/>
<Node id="10">
<SimplePredicate field="VP.7" operator="lessOrEqual" value="0.583140169"/>
<Node id="20">
<SimplePredicate field="apol" operator="lessOrEqual" value="50.9146355"/>
<Node id="32" score="4.48">
<SimplePredicate field="MOMI.Z" operator="lessOrEqual" value="791.5388999"/>
</Node>
<Node id="33" score="4.848">
<SimplePredicate field="MOMI.Z" operator="greaterThan" value="791.5388999"/>
</Node>
</Node>
<Node id="21" score="5.14">
<SimplePredicate field="apol" operator="greaterThan" value="50.9146355"/>
</Node>
</Node>
<Node id="11">
<SimplePredicate field="VP.7" operator="greaterThan" value="0.583140169"/>
<Node id="22">
<SimplePredicate field="WPATH" operator="lessOrEqual" value="1502"/>
<Node id="34" score="5.638">
<SimplePredicate field="WPATH" operator="lessOrEqual" value="1440.5"/>
</Node>
<Node id="35" score="5.45">
<SimplePredicate field="WPATH" operator="greaterThan" value="1440.5"/>
</Node>
</Node>
<Node id="23" score="5.922">
<SimplePredicate field="WPATH" operator="greaterThan" value="1502"/>
</Node>
</Node>
</Node>
</Node>
<Node id="3">
<SimplePredicate field="GRAVH.1" operator="greaterThan" value="2751.5996775"/>
<Node id="6">
<SimplePredicate field="ECCEN" operator="lessOrEqual" value="849"/>
<Node id="12">
<SimplePredicate field="MOMI.Y" operator="lessOrEqual" value="8736.7661745"/>
<Node id="24" score="6.37">
<SimplePredicate field="MOMI.R" operator="lessOrEqual" value="8.2680425545"/>
</Node>
<Node id="25" score="6.7925">
<SimplePredicate field="MOMI.R" operator="greaterThan" value="8.2680425545"/>
</Node>
</Node>
<Node id="13" score="7.61">
<SimplePredicate field="MOMI.Y" operator="greaterThan" value="8736.7661745"/>
</Node>
</Node>
<Node id="7">
<SimplePredicate field="ECCEN" operator="greaterThan" value="849"/>
<Node id="14">
<SimplePredicate field="WA.unity" operator="lessOrEqual" value="198.5991815"/>
<Node id="26" score="7.94">
<SimplePredicate field="SP.3" operator="lessOrEqual" value="11.61334328"/>
</Node>
<Node id="27">
<SimplePredicate field="SP.3" operator="greaterThan" value="11.61334328"/>
<Node id="36" score="8.75">
<SimplePredicate field="MDEC.13" operator="lessOrEqual" value="6.9421166205"/>
</Node>
<Node id="37" score="8.42">
<SimplePredicate field="MDEC.13" operator="greaterThan" value="6.9421166205"/>
</Node>
</Node>
</Node>
<Node id="15" score="9.408">
<SimplePredicate field="WA.unity" operator="greaterThan" value="198.5991815"/>
</Node>
</Node>
</Node>
</Node>
</TreeModel>
</Segment>
<Segment id="3">
答案 0 :(得分：0)
这样的东西？
//node[@score]
答案 1 :(得分：0)
你做过什么？这是你可以尝试的：
//Node[@id='16']/ancestor::Node 以下是仅使用标准jdk的示例，但您可能会尝试使用dom4j之类的内容：
public class SO9466408 {
private static final Map<String, String> OP = new HashMap<String, String>() {{ put("lessOrEqual", "<="); }};
public static String attrValue(Node node, String attrName) {
return node.getAttributes().getNamedItem(attrName).getTextContent();
}
public static void main(String[] args) throws XPathExpressionException {
final String id = "16";
String score = null;
final StringBuilder ruleset = new StringBuilder("if (");
// XML/XPath
final InputSource xmlInput = new InputSource(new URL("your file.xml").openStream());
final XPath xpath = XPathFactory.newInstance().newXPath();
// get the ancestors node
final XPathExpression expr = xpath.compile("//Node[@id='" + id + "']/ancestor::Node");
final NodeList ancestors = (NodeList) expr.evaluate(xmlInput, XPathConstants.NODESET);
for (int i = 0; i < ancestors.getLength(); ++i) {
Node predicate = ancestors.item(i).getFirstChild();
// get a new rule
if (predicate.getNodeName().equals("SimplePredicate")) {
ruleset.append(String.format("%s(%s %s %s)", i > 1 ? " && " : "",
attrValue(predicate, "field"), OP.get(attrValue(predicate, "operator")), attrValue(predicate, "value")));
}
// retrieve the score on the last node
if (i == ancestors.getLength() - 1) {
score = attrValue((Node) xpath.compile("//Node[@id='" + id + "']").evaluate(ancestors.item(i), XPathConstants.NODE), "score");
}
}
// show what we found
ruleset.append(") {\n\tscore = " + score + ";\n}");
System.out.println(ruleset.toString());
}
}
// Outputs:
// if ((GRAVH.1 <= 2751.5996775) && (WV.unity <= 93.567676535) && (Zagreb <= 74))
// {
// score = 2.32
// }