文本介绍如何使用Spire.XLS for Java为Excel工作表添加或删除数字签名。

添加数字签名

import com.spire.xls.*;
import com.spire.xls.digital.CertificateAndPrivateKey;

import java.util.Date;


public class AddDigitalSignature {
    public static void main(String[] args) throws Exception {
        //加载工作表
        Workbook workbook=new Workbook();
        workbook.loadFromFile("Sample.xlsx");

        //添加数字签名
        CertificateAndPrivateKey cap = new CertificateAndPrivateKey("Test.pfx","e-iceblue");
        workbook.addDigitalSignature(cap, "e-iceblue",new Date());

        //保存文档
        String result="AddDigitalSignature.xlsx";
        workbook.saveToFile(result,ExcelVersion.Version2013);

    }
}

效果图：

删除数字签名

import com.spire.xls.*;

public class RemoveDigitalSignature {
    public static void main(String[] args) throws Exception {
        //加载工作表
        Workbook workbook=new Workbook();
        workbook.loadFromFile("AddDigitalSignature.xlsx");

        //删除数字签名
        workbook.removeAllDigitalSignatures();

        //保存文档
        String result="RemoveDigitalSignature.xlsx";
        workbook.saveToFile(result,ExcelVersion.Version2013);

    }
}

效果图：