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-package com.zzsmart.qomo.kn.cost.manage.util;
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-
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-import com.alibaba.excel.EasyExcel;
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-import com.alibaba.excel.annotation.ExcelProperty;
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-import com.alibaba.excel.write.metadata.style.WriteCellStyle;
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-import com.alibaba.excel.write.metadata.style.WriteFont;
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-import com.alibaba.excel.write.style.HorizontalCellStyleStrategy;
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-import com.zzsmart.qomo.kn.cost.manage.entity.AppSceneCostStandardDetail;
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-import org.apache.poi.ss.usermodel.*;
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-
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-import javax.servlet.http.HttpServletResponse;
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-import java.io.IOException;
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-import java.io.UnsupportedEncodingException;
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-import java.lang.reflect.Field;
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-import java.net.URLEncoder;
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-import java.nio.charset.StandardCharsets;
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-import java.util.ArrayList;
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-import java.util.HashSet;
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-import java.util.List;
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-import java.util.Set;
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-
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-public class EasyExcelUtil {
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- /**
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- * 导出Excel文件到HTTP响应流，包含自定义表头。
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- *
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- * @param response HTTP响应对象
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- * @param fileName 导出的文件名
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- * @param head 表头信息列表
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- * @param data 需要导出的数据列表
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- * @param clazz 数据模型的Class类型
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- * @throws IOException IO异常
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- */
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- public static <T> void export(HttpServletResponse response, String fileName, List<?> head, List<T> data, Class<T> clazz) throws IOException {
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- response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
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- response.setCharacterEncoding(StandardCharsets.UTF_8.name());
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- try {
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- fileName = URLEncoder.encode(fileName, StandardCharsets.UTF_8.name()).replaceAll("\\+", "%20");
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- response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");
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- } catch (UnsupportedEncodingException e) {
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- e.printStackTrace();
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- }
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-
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- // 自定义表头样式
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- HorizontalCellStyleStrategy horizontalCellStyleStrategy = getHorizontalCellStyleStrategy();
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-
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- // 使用EasyExcel导出
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- try {
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- EasyExcel.write(response.getOutputStream(), clazz)
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- // 注册样式策略
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- .registerWriteHandler(horizontalCellStyleStrategy).sheet("1111").doWrite(data);
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- } catch (IOException e) {
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- e.printStackTrace();
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- throw new RuntimeException(e);
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- }
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-// FileOutputStream outputStream= new FileOutputStream(fileName);
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-// try {
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-// EasyExcel.write(outputStream)
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-// // 设置自定义样式，可选
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-// .sheet("Sheet1") // 设置工作表名称
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-// .doWrite(data); // 将数据写入Excel
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-// } catch (Exception e) {
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-// e.printStackTrace();
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-// System.out.println("zheli==============");
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-// } finally {
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-//// if (excelWriter != null) {
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-//// excelWriter.finish();
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-//// }
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-// if (outputStream != null) {
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-// outputStream.close();
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-// }
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-
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-// }
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- }
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-
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- /**
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- * 创建自定义的水平单元格样式策略，用于表头样式。
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- *
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- * @return 水平单元格样式策略
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- */
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- private static HorizontalCellStyleStrategy getHorizontalCellStyleStrategy() {
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- // 设置表头字体样式
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- WriteFont headFont = new WriteFont();
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- headFont.setFontHeightInPoints((short) 12);
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- headFont.setFontName("Arial");
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- headFont.setBold(true);
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-
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- // 设置表头单元格样式
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- WriteCellStyle headCellStyle = new WriteCellStyle();
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- headCellStyle.setHorizontalAlignment(HorizontalAlignment.CENTER);
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- headCellStyle.setVerticalAlignment(VerticalAlignment.CENTER);
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- headCellStyle.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
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- headCellStyle.setFillPatternType(FillPatternType.SOLID_FOREGROUND);
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- headCellStyle.setBorderLeft(BorderStyle.THIN);
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- headCellStyle.setBorderRight(BorderStyle.THIN);
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- headCellStyle.setBorderTop(BorderStyle.THIN);
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- headCellStyle.setBorderBottom(BorderStyle.THIN);
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- headCellStyle.setWriteFont(headFont);
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-
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- // 创建并返回水平单元格样式策略
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- return new HorizontalCellStyleStrategy(headCellStyle, (List<WriteCellStyle>) null);
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- }
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-
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- /**
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- * 获取带有@Excel注解的属性集合
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- *
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- * @param clazz 实体类的Class对象
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- * @return 带有@Excel注解的Field集合
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- */
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- public static Field[] getExcelPropertyAnnotatedFields(Class<?> clazz) {
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- Field[] fields = clazz.getDeclaredFields();
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- List<Field> annotatedFields = new ArrayList<>();
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-
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- for (Field field : fields) {
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- if (field.isAnnotationPresent(ExcelProperty.class)) {
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- annotatedFields.add(field);
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- }
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- }
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- return annotatedFields.toArray(new Field[0]);
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- }
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-
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- /**
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- * 查询类需要导出的列名
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- *
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- * @param clazz
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- * @return
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- */
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- public static Set<String> getIncludeFields(Class<?> clazz) {
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- Field[] excelPropertyAnnotatedFields = getExcelPropertyAnnotatedFields(AppSceneCostStandardDetail.class);
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- Set<String> includeColumnFiledNames = new HashSet<String>();
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- for (int i = 0; i < excelPropertyAnnotatedFields.length; i++) {
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- includeColumnFiledNames.add(excelPropertyAnnotatedFields[i].getName());
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- }
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- return includeColumnFiledNames;
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- }
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-}
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wangqiong
1 год назад