java - 如何将一个字符串分割两次

Question

我正在尝试将字符串拆分两次

String example = response;
    String [] array = example.split("<section>");
    System.out.println(array[0]);

    String [] array2 = example.split("<title>");
    System.out.println(array2[2]);

我试图通过使用此代码来实现此目的(未成功)，但我不想打印第一个拆分，而是想保存它并继续进行第二个拆分。谁能解决这个问题或更好的方法将字符串分割两次？谢谢

Answer 1

这可能看起来很多...但您确实应该使用 DOM 解析器来操作 XML:

import java.io.StringReader;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXParseException;

public class ExtractXML {
    public static void main(String argv[]) {
        DocumentBuilderFactory docBuilderFactory = null;
        DocumentBuilder docBuilder = null;
        Document doc = null;
        String rawStr = "Response: <section><title>Input interpretation</title>"
                + "<sectioncontents>Ireland</sectioncontents></section>"
                + "<section><title>Result</title>"
                + "<sectioncontents>Michael D. Higgins</sectioncontents></section>";
        String docStr = rawStr.substring(rawStr.indexOf('<'));
        String answer = "";

        try {
            docBuilderFactory = DocumentBuilderFactory.newInstance();
            docBuilder = docBuilderFactory.newDocumentBuilder();
            doc = docBuilder.parse(new InputSource(new StringReader(docStr)));
        } catch (SAXParseException e) {
            System.out.println("Doc missing root node, adding and trying again...");
            docStr = String.format("<root>%s</root>", docStr);

            try {
                doc = docBuilder.parse(new InputSource(new StringReader(docStr)));
            } catch (Exception e1) {
                System.out.printf("Malformed XML: %s\n", e1.getMessage());
                System.exit(0);
            }
        } catch (Exception e) {
            System.out.printf("Something went wrong: %s\n", e.getMessage());
        } finally {
            try {
                // Normalize text representation:
                doc.getDocumentElement().normalize();

                NodeList titles = doc.getElementsByTagName("title");

                for (int tIndex = 0; tIndex < titles.getLength(); tIndex++) {
                    Node node = titles.item(tIndex);

                    if (node.getTextContent().equals("Result")) {
                        Node parent = node.getParentNode();
                        NodeList children = parent.getChildNodes();

                        for (int cIndex = 0; cIndex < children.getLength(); cIndex++) {
                            Node child = children.item(cIndex);
                            if (child.getNodeName() == "sectioncontents") {
                                answer = child.getTextContent();
                            }
                        }
                    }
                }

                System.out.printf("Answer: %s\n", answer);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

输出:

[Fatal Error] :1:98: The markup in the document following the root element must be well-formed.
Doc missing root node, adding and trying again...
Answer: Michael D. Higgins