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public class WriteToExcel {
private static XSSFWorkbook workbook;
private static XSSFSheet sheet;
private static XSSFRow row;
private static XSSFCell cell;
private static File file;
//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();
}
}
// 内容测试数据
protected static List<List<String>> getContent() {
List<List<String>> contentList = new ArrayList<>();
List<String> content1 = new ArrayList<>();
content1.add("张三");
content1.add("18");
List<String> content2 = new ArrayList<>();
content2.add("李四");
content2.add("20");
contentList.add(content1);
contentList.add(content2);
return contentList;
}
public static void main(String[] args) {
//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
}
}