利用java代码写一段poi写入
时间: 2023-03-13 19:06:59 浏览: 66
我可以给你一个简单的例子,你可以使用它来创建一个工作表,并使用POI API写入数据: import java.io.FileOutputStream;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class WriteExcel {
public static void main(String[] args) throws Exception {
XSSFWorkbook workbook = new XSSFWorkbook();
XSSFSheet sheet = workbook.createSheet("Datatypes in Java");
Object[][] datatypes = {
{"数据类型", "大小(位)"},
{"int", 2},
{"float", 4},
{"double", 8},
{"char", 1},
};
int rowNum = 0;
System.out.println("Creating excel");
for (Object[] datatype : datatypes) {
Row row = sheet.createRow(rowNum++);
int colNum = 0;
for (Object field : datatype) {
Cell cell = row.createCell(colNum++);
if (field instanceof String) {
cell.setCellValue((String) field);
} else if (field instanceof Integer) {
cell.setCellValue((Integer) field);
}
}
}
try {
FileOutputStream outputStream = new FileOutputStream("JavaDatatypes.xlsx");
workbook.write(outputStream);
workbook.close();
} catch (Exception e) {
e.printStackTrace();
}
System.out.println("Done");
}
}