廢話不多說,直接上代碼,一個簡單的讀取Excel資料,并且設定單元格資料類型
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
public class Test {
public static void main(String[] args) throws Exception {
String sFullPath = "D:/exportNoRetail.xls";
File file = new File(sFullPath);
//file.getAbsolutePath() 擷取檔案的全路徑
//建立輸入流讀取Excel
InputStream finput = new FileInputStream(file.getAbsolutePath());
HSSFWorkbook wb = new HSSFWorkbook(finput);
HSSFSheet sheet = wb.getSheetAt(0);
finput.close();
HSSFRow row = null;//宣告一列
HSSFCell cell = null;//宣告一個儲存格
for (int i = 1;i <= sheet.getLastRowNum();i++){
row = sheet.getRow(i);
for (int j = 0; j < 4; j++){
//設定單元格是字元串類型
//長度較大的數字時,導入資料放到緩存中會變成科學計數發的形式,可以将數字轉換為字元串導入
cell.setCellType(HSSFCell.CELL_TYPE_STRING);
cell = row.getCell(j);
System.out.print(cell+"**");
}
System.out.println();
}
}
}