spire .doc for java 取消红色警告水印

问题

在使用Spire.Doc的word文档产生了警告水印

（Evaluation Warning: The document was created with Spire.Doc for JAVA.）

引入 poi依赖

<!-- Apache POI -->
<!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>4.1.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml -->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>4.1.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml-schemas -->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml-schemas</artifactId>
    <version>4.1.0</version>
</dependency>

使用poi删除第一行即可

public static void restWord() {
    try (FileInputStream fis = new FileInputStream("E:/ygq/开发/test/test.docx");
        XWPFDocument document = new XWPFDocument(fis);
        FileOutputStream fos = new FileOutputStream("E:/ygq/开发/test/test1.docx")) {
        document.removeBodyElement(0);

        // 保存修改后的文档
        document.write(fos);

    } catch (IOException e) {
        e.printStackTrace();
    }
}