使用SAX解析器Java正确构建字符串

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

public class SAXParserExample {
    public static void main(String[] args) {
        try {
            // 创建SAXParserFactory实例
            SAXParserFactory factory = SAXParserFactory.newInstance();
            // 创建SAXParser实例
            SAXParser parser = factory.newSAXParser();
            // 创建自定义的事件处理器
            MyHandler handler = new MyHandler();
            // 解析XML文档
            parser.parse("example.xml", handler);
            // 获取解析结果
            String result = handler.getResult();
            System.out.println("解析结果：" + result);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // 自定义事件处理器
    private static class MyHandler extends DefaultHandler {
        private StringBuilder stringBuilder;

        @Override
        public void startDocument() throws SAXException {
            stringBuilder = new StringBuilder();
        }

        @Override
        public void characters(char[] ch, int start, int length) throws SAXException {
            stringBuilder.append(new String(ch, start, length));
        }

        @Override
        public void endDocument() throws SAXException {
            // 解析结束后的处理逻辑
        }

        public String getResult() {
            return stringBuilder.toString();
        }
    }
}