package homework.excelutils;
import java.io.File;
import java.io.IOException;
import java.util.List;
import jxl.Sheet;
import jxl.Workbook;
import jxl.read.biff.BiffException;
public class ExcelUtils {
public static <T> List<T> read(File file, CallBack<T> call) {
Workbook workbook = null;
try {
workbook = Workbook.getWorkbook(file);
Sheet sheet = workbook.getSheet(0);
return call.getDatas(sheet);
} catch (BiffException e) {
e.printStackTrace();
} catch (IndexOutOfBoundsException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
public interface CallBack<T> {
public List<T> getDatas(Sheet sheet);
}
}
//举个栗子
public void writeproduct() {
List<Product> list = ExcelUtils.read(new File("商品表.xls"), new CallBack<Product>() {
@Override
public List<Product> getDatas(Sheet sheet) {
List<Product> lp = new ArrayList<>();
int rows = sheet.getRows();
Product pro = null;
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");
for (int i = 1; i < rows; i++) {
String id = sheet.getCell(0,i).getContents();
String name = sheet.getCell(1,i).getContents();
String price = sheet.getCell(2,i).getContents();
String offset = sheet.getCell(3,i).getContents();
Date time = null;
try {
time = sdf.parse(sheet.getCell(4,i).getContents());
} catch (ParseException e) {
e.printStackTrace();
}
String counts = sheet.getCell(5,i).getContents();
String cid = sheet.getCell(6,i).getContents();
pro = new Product(Integer.parseInt(id), name, Double.parseDouble(price),Double.parseDouble(offset), time, Integer.parseInt(counts),Integer.parseInt(cid));
lp.add(pro);
}
return lp;
}
});
ProductDAO p = new ProductDAO();
for (Product product : list) {
p.insert(product);
}
}
