import java.io.FileInputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
 
public class FileReadExample {
    public static void main(String[] args) {
        try (FileInputStream fis = new FileInputStream("example.txt")) {
            FileChannel fileChannel = fis.getChannel();
            ByteBuffer buffer = ByteBuffer.allocate(1024);
            int bytesRead = fileChannel.read(buffer);
            while (bytesRead != -1) {
                buffer.flip();
                while (buffer.hasRemaining()) {
                    System.out.print((char) buffer.get());
                }
                buffer.clear();
                bytesRead = fileChannel.read(buffer);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
 
public class ZipReadExample {
    public static void main(String[] args) {
        try (ZipInputStream zis = new ZipInputStream(new FileInputStream("document.zip"))) {
            ZipEntry entry = zis.getNextEntry();
            while (entry != null) {
                String name = entry.getName();
                if (name.endsWith(".docx")) {
                    System.out.println("File Found :: " + name);
                    // Process the .docx file
                    InputStream docxStream = new BufferedInputStream(zis);
                    // Read .docx file content here
                    docxStream.close();
                }
                entry = zis.getNextEntry();
            }
            zis.closeEntry();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<bookstore>
    <book category="cooking">
        <title lang="en">Everyday Italian</title>
        <author>Giada De Laurentiis</author>
        <year>2005</year>
        <price>30.00</price>
    </book>
</bookstore>

import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
 
@XmlRootElement
class Book {
    private String title;
    private String author;
    private int year;
    private double price;
    // Getters and setters...
}
 
public class JAXBExample {
    public static void main(String[] args) {
        try {
            Book book = new Book();
            book.setTitle("Everyday Italian");
            book.setAuthor("Giada De Laurentiis");
            book.setYear(2005);
            book.setPrice(30.00);
 
            JAXBContext context = JAXBContext.newInstance(Book.class);
            Marshaller marshaller = context.createMarshaller();
            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
            marshaller.marshal(book, System.out);
        } catch (JAXBException e) {
            e.printStackTrace();
        }
    }
}

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
 
public class DOM4JExample {
    public static void main(String[] args) {
        try {
            String xmlContent = "<bookstore><book><title>Everyday Italian</title><author>Giada De Laurentiis</author></book></bookstore>";
            Document document = DocumentHelper.parseText(xmlContent);
            Element rootElement = document.getRootElement();
            System.out.println("Root element: " + rootElement.getName());
            for (Element element : (List<Element>) rootElement.elements()) {
                System.out.println("Child element: " + element.getName() + ", text: " + element.getText());
            }
        } catch (DocumentException e) {
            e.printStackTrace();
        }
    }
}

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>版本號</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>版本號</version>
</dependency>

import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
 
import java.io.FileInputStream;
import java.io.IOException;
 
public class ReadDocxExample {
    public static void main(String[] args) {
        try (FileInputStream fis = new FileInputStream("example.docx")) {
            XWPFDocument document = new XWPFDocument(fis);
            for (XWPFParagraph para : document.getParagraphs()) {
                System.out.println(para.getText());
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itext7-core</artifactId>
    <version>版本號</version>
</dependency>

import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.layout.Document;
import com.itextpdf.layout.element.Paragraph;
 
import java.io.FileNotFoundException;
 
public class CreatePdfExample {
    public static void main(String[] args) {
        String dest = "output.pdf";
        try (PdfWriter writer = new PdfWriter(dest);
             PdfDocument pdf = new PdfDocument(writer);
             Document document = new Document(pdf)) {
            document.add(new Paragraph("Hello, World!"));
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }
}

<dependency>
    <groupId>org.apache.pdfbox</groupId>
    <artifactId>pdfbox</artifactId>
    <version>版本號</version>
</dependency>

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.text.PDFTextStripper;
 
import java.io.File;
import java.io.IOException;
 
public class ReadPdfExample {
    public static void main(String[] args) {
        try (PDDocument document = PDDocument.load(new File("input.pdf"))) {
            PDFTextStripper stripper = new PDFTextStripper();
            String pdfContent = stripper.getText(document);
            System.out.println(pdfContent);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

// 示例代碼：使用Apache POI解析.docx文檔中的結(jié)構(gòu)
XWPFDocument document = new XWPFDocument(OPCPackage.open(new File("example.docx").getAbsolutePath()));
List<XWPFParagraph> paragraphs = document.getParagraphs();
for (XWPFParagraph paragraph : paragraphs) {
    CTParagraph ctParagraph = paragraph.getCTP();
    List<CTR> elements = ctParagraph.getAbstractNumList();
    // 遍歷段落中的元素以識別結(jié)構(gòu)
    for (CTR element : elements) {
        // ...
    }
}

// 示例代碼：在iText中創(chuàng)建新的段落和列表
PdfPTable table = new PdfPTable(1);
PdfPCell cell = new PdfPCell();
cell.addElement(new Paragraph("Title 1"));
cell.addElement(new Paragraph("Item 1"));
table.addCell(cell);
// 繼續(xù)添加其他項...

// 示例代碼：使用iText進行樣式映射
Map<String, String> styleMapping = new HashMap<>();
styleMapping.put("Heading 1", PdfName.HEADING_1.toString());
styleMapping.put("Heading 2", PdfName.HEADING_2.toString());
// 其他樣式映射...

// 示例代碼：轉(zhuǎn)換段落樣式
Paragraph paragraph = new Paragraph();
for (XWPFParagraph p : paragraphs) {
    String style = p.getParagraphFormat().getBuiltInStyleId();
    if (styleMapping.containsKey(style)) {
        paragraph.add(new Paragraph(p.getText(), styleMapping.get(style)));
    } else {
        paragraph.add(new Paragraph(p.getText())); // 默認樣式
    }
}