poi html to word

POI is a popular Java library for integrating Microsoft Office applications, including tools such as Word, Excel, and PowerPoint. The POI library provides multiple ways to create, read and edit these documents. In this article, we will explore how to convert HTML files to Word documents using POI.

First, we need to add POI dependencies in the code. This can be achieved by adding the following dependency to the Maven pom.xml file:

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>4.1.2</version>
</dependency>

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>4.1.2</version>
</dependency>

Now we can start converting the HTML file. To do this, we will first use the Jsoup library to parse the HTML file into a DOM (Document Object Model) object. We will then create a Word document using the POI library and add content from the DOM object to its paragraphs. Below is a sample code where we convert a simple HTML file into a Word document:

import java.io.*;
import org.apache.poi.xwpf.usermodel.*;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

public class Main {
    public static void main(String[] args) {
        try {
            // 解析HTML文件
            File input = new File("input.html");
            Document doc = Jsoup.parse(input, "UTF-8");

            // 创建Word文档
            XWPFDocument docx = new XWPFDocument();
            FileOutputStream out = new FileOutputStream(new File("output.docx"));

            // 获取HTML文件中的段落
            Elements paras = doc.select("p");
            for (Element para : paras) {
                // 在Word文档中创建段落
                XWPFParagraph newPara = docx.createParagraph();
                // 将HTML内容添加到段落中
                newPara.createRun().setText(para.text());
            }

            // 保存Word文档
            docx.write(out);
            out.close();
            docx.close();

            System.out.println("HTML文件已成功转换为Word文档！");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

In the above code, we first load the HTML file and parse it using Jsoup library. Then, we create an XWPFDocument object that represents a new Word document. Next, we get all the paragraphs in the HTML file and add them to the paragraphs of the Word document one by one, creating a new paragraph in the Word document each time. Finally, we save the Word document and close the associated streams and objects.

It should be noted that the above sample code is just a simple example, which assumes that the HTML file only contains p tags. In reality, HTML files are likely to contain many other tags and elements that may require special handling. For example, you may need to work with images, tables, hyperlinks, and other types of elements.

In some cases, you may also want to use higher-level APIs in POI to have more granular control over the formatting and styling of Word documents. For example, you can use the methods of the XWPFParagraph and XWPFRun classes for more detailed settings.

In conclusion, converting HTML files to Word documents using POI and Jsoup is a relatively easy and useful task as it provides users with more flexibility and extensibility. In practice, you may need to do some extensive tweaking and testing to ensure that the format and content of the Word document you generate is what you expect.

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