Question

我的代码就像：

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import javax.servlet;
import org.dom4j;
import org.jaxen.JaxenException;

/**
 * Servlet implementation class Search
 */
//@WebServlet("/Search")
public class Search extends HttpServlet {
    private static final long serialVersionUID = 1L;
    private static String xmlName = "rows.xml";
    private static Document document;
    /**
     * @throws DocumentException 
     * @see HttpServlet#HttpServlet()
     */
    public Search() throws DocumentException {
        super();
        XmlReader xmlReader = new XmlReader();
        document = xmlReader.readXml();
        searcher();
    }

发生意外输出的代码：

 public void searcher()
    {
        List nodelist = document.selectNodes("rows");
        System.out.println(nodelist.size());
    }
}

我的XML阅读器：

package web.app;
import org.xml.sax.helpers.DefaultHandler;
import org.dom4j;

public class XmlReader extends DefaultHandler{
    public static String filename = 
    "D:\\JavaWorkplace\\DataCuration\\WebContent\\rows.xml";
public Document readXml() throws DocumentException {
    SAXReader saxReader = new SAXReader();
    Document document = saxReader.read(filename);
    System.out.println(document.content());
    return document;
}

}

XML文件：https://data.oregon.gov/api/views/j8eb-8um2/rows.xml?accessType=DOWNLOAD 但是，输出是：

[org.dom4j.tree.DefaultElement@50e96ea1 [Element: <response attributes: []/>]]
0

那该怎么了？

Answer 1

好吧，我明白了。我混淆了XML文件中的根元素。它是＆＃34;响应＆＃34;而不是＆＃34;行＆＃34;。无论如何，谢谢：）

使用XPath解析xml时得到零大小的列表

1 个答案: