poi操作word文档docx

依赖

<!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>4.1.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml -->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>4.1.2</version>
</dependency>

XWPFDocument类

1. 构造方法

XWPFDocument(java.io.InputStream is) 输入流读文件打开

XWPFDocument document = new XWPFDocument(new FileInputStream(path));

XWPFDocument(OPCPackage pkg) 打开文档

XWPFDocument document = new XWPFDocument(XWPFDocument.openPackage("C:\Users\admin\Desktop\0.docx"));

注意： 两种方式的区别文件流打开

 new XWPFDocument(new FileInputStream(path)) 打开操作word不会修改原模板输出操作时。
 new XWPFDocument(XWPFDocument.openPackage("C:\Users\admin\Desktop\0.docx")) 原来的word模板会被修改

2.常用

createParagraph() 创建段落
createTable() 创建一个空表，其中一行和一列为默认值。也可以指定行列
createStyles() 如果文档尚未存在，则创建空样式
getParagraphs() 返回持有头或脚文本的段落。
insertNewParagraph(org.apache.xmlbeans.XmlCursor cursor) 在光标的位置添加新段落。游标=光标
removeBodyElement(int pos)从word文档body元素阵列列表中删除身体元素（从上到下）
write(java.io.OutputStream out) 写文件

实例demo

    public class Test004 {
        public static void main(String[] args) throws IOException, OpenXML4JException, XmlException {

            XWPFDocument document = new XWPFDocument(new FileInputStream("C:\Users\admin\Desktop\0.docx"));

            XWPFParagraph paragraph = document.createParagraph();
            //获取所有段落
            List<XWPFParagraph> paragraphs = document.getParagraphs();
            for (int i = 0; i < paragraphs.size(); i++) {
                XWPFParagraph paragraph1 = paragraphs.get(i);
                if (paragraph1.getText().equals("开头")){
                    //将一个新运行追加到这一段
                    XWPFRun r1=paragraph.createRun();
                    r1.addCarriageReturn();
    //                获取当前光标位置
                    XmlCursor cursor = paragraph1.getCTP().newCursor();
                    cursor.toNextSibling();
    //                光标位置插入新段落
                    XWPFParagraph newParagraph = document.insertNewParagraph(cursor);
                    XWPFRun run = newParagraph.createRun();
                    run.getCTR().addNewRPr().addNewHighlight().setVal(STHighlightColor.LIGHT_GRAY);
                    String s= "                                                                        ";

                    String s1 = "插入当前位置！！！！";
                    StringBuilder stringBuilder = new StringBuilder();
                    for (int j = 0; j < 64-s1.length(); j++) {
                        stringBuilder.append(" ");
                    }
                    run.setText(s1+stringBuilder);


                    document.removeBodyElement(document.getPosOfParagraph(paragraph1));
                }

                System.out.println("死循环"+i);
            }


            document.write(new FileOutputStream("C:\Users\admin\Desktop\001.docx"));
            document.close();

        }
    }

   效果

2F~RUEVDCQE4HJ}AT_GPO2I.png