Java如何将二维数组写入Excel单元格区域？

    <dependency>
      <groupid>org.apache.poi</groupid>
      <artifactid>poi</artifactid>
      <version>3.17</version>
    </dependency>
    <dependency>
      <groupid>org.apache.poi</groupid>
      <artifactid>poi-ooxml</artifactid>
      <version>3.17</version>
    </dependency>

// 创建sheet页
public static void setsheet(string sheetname) {
    workbook = new xssfworkbook();
    sheet = workbook.createsheet(sheetname);
}

// 创建表头
public static void createhead(list<string> headlist) {
    // 创建表头，也就是第一行
    row = sheet.createrow(0);
    for (int i = 0; i < headlist.size(); i++) {
        cell = row.createcell(i);
        cell.setcellvalue(headlist.get(i));
    }
}

// 创建表内容
public static void createcontent(list<list<string>> contentlist) {
    // 创建表内容，从第二行开始
    for (int i = 0; i < contentlist.size(); i++) {
        row = sheet.createrow(i + 1);
        for (int j = 0; j < contentlist.get(i).size(); j++) {
            row.createcell(j).setcellvalue(contentlist.get(i).get(j));
        }
    }
}

// 写入文件
public static void writetofile(string filepath) {
    file = new file(filepath);
    // 将文件保存到指定的位置
    try {
        workbook.write(new fileoutputstream(file));
        system.out.println("写入成功");
        workbook.close();
    } catch (ioexception e) {
        e.printstacktrace();
    }
}

// ... 省略内容 ...

// 表头测试数据
List<String> headList = new ArrayList<>();
headList.add("昵称");
headList.add("年龄");
List<List<String>> contentList = getContent();// 内容测试数据
setSheet("WorkSheet");                        // 创建sheet页
createHead(headList);                         // 设置表头
createContent(contentList);                   // 设置内容
writeToFile("D://work.xls");         // 写入文件