保存一个版本

zhang

2025-07-25 443e32fec6aec9dfa2ca802246950dc3c36e6251

 zy-acs-manager/src/main/java/com/zy/acs/manager/common/utils/ExcelUtil.java

@@ -6,6 +6,7 @@
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@@ -92,4 +93,64 @@



    public static <T> Workbook createXlsx(List<T> list, Class<T> clz) {
        //HSSFWorkbook workbook = new HSSFWorkbook();
        XSSFWorkbook workbook =new XSSFWorkbook();
        Sheet sheet = workbook.createSheet(clz.getSimpleName());

        Row header = sheet.createRow(0);
        Field[] fields = Cools.getAllFields(clz);
        int headerIdx = 0;
        for (Field field : fields) {
            if (Modifier.isFinal(field.getModifiers())
                    || Modifier.isStatic(field.getModifiers())
                    || Modifier.isTransient(field.getModifiers())) {
                continue;
            }
            String memo = "Undefined";
            if (field.isAnnotationPresent(ApiModelProperty.class)) {
                memo = field.getAnnotation(ApiModelProperty.class).value();
            }
            header.createCell(headerIdx).setCellValue(memo);
            headerIdx++;
        }

        int rowIndex = 1;
        for (T t : list) {
            Row row = sheet.createRow(rowIndex++);

            int cellIndex = 0;
            for (Field field : fields) {
                if (Modifier.isFinal(field.getModifiers())
                        || Modifier.isStatic(field.getModifiers())
                        || Modifier.isTransient(field.getModifiers())) {
                    continue;
                }

                field.setAccessible(true);  // 此行很重要，特别是字段为private时
                Object value = null;
                try {
                    value = field.get(t);
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                }
                if (value != null) {
                    if (value instanceof Date) {
                        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                        row.createCell(cellIndex).setCellValue(sdf.format((Date) value));
                    } else {
                        row.createCell(cellIndex).setCellValue(value.toString());
                    }
                }
                cellIndex++;
            }
        }

        for (int i = 0; i <= fields.length; i++) {
            sheet.autoSizeColumn(i);
        }

        return workbook;
    }

}