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luxiaotao1123

2024-03-02 03e64d7bf2f320dfb8d2fb0e4705d6a971807562

 zy-asrs-wcs/src/main/java/com/zy/asrs/wcs/utils/ExcelUtil.java

@@ -1,48 +1,89 @@
package com.zy.asrs.wcs.utils;

import com.zy.asrs.framework.common.Cools;
import io.swagger.annotations.ApiModelProperty;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;

/**
 * Created by vincent on 2/17/2024
 */
public class ExcelUtil {

    public static Workbook create() {
        // 创建 Workbook 和 Sheet
    public static void build(Workbook workbook, HttpServletResponse response) {
        response.reset();
        Utils.cors(response);
        response.setContentType("application/octet-stream; charset=utf-8");
        try {
            response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode("export", "UTF-8"));
            workbook.write(response.getOutputStream());
        } catch (IOException ignore) {}
    }

    public static <T> Workbook create(List<T> list, Class<T> clz) {
        HSSFWorkbook workbook = new HSSFWorkbook();
        Sheet sheet = workbook.createSheet("运维报表");
        Sheet sheet = workbook.createSheet(clz.getSimpleName());

        // 创建表头
        Row header = sheet.createRow(0);
        header.createCell(0).setCellValue("姓名");
        header.createCell(1).setCellValue("年龄");
        header.createCell(2).setCellValue("性别");
        header.createCell(3).setCellValue("职位");
        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 = "未知";
            if (field.isAnnotationPresent(ApiModelProperty.class)) {
                memo = field.getAnnotation(ApiModelProperty.class).value();
            }
            header.createCell(headerIdx).setCellValue(memo);
            headerIdx++;
        }

        // 添加一些数据
        Row row1 = sheet.createRow(1);
        row1.createCell(0).setCellValue("张三");
        row1.createCell(1).setCellValue(28);
        row1.createCell(2).setCellValue("男");
        row1.createCell(3).setCellValue("运维工程师");
        int rowIndex = 1;
        for (T t : list) {
            Row row = sheet.createRow(rowIndex++);

        Row row2 = sheet.createRow(2);
        row2.createCell(0).setCellValue("李四");
        row2.createCell(1).setCellValue(32);
        row2.createCell(2).setCellValue("女");
        row2.createCell(3).setCellValue("项目经理");
            int cellIndex = 0;
            for (Field field : fields) {
                if (Modifier.isFinal(field.getModifiers())
                        || Modifier.isStatic(field.getModifiers())
                        || Modifier.isTransient(field.getModifiers())) {
                    continue;
                }

        Row row3 = sheet.createRow(3);
        row3.createCell(0).setCellValue("王五");
        row3.createCell(1).setCellValue(25);
        row3.createCell(2).setCellValue("男");
        row3.createCell(3).setCellValue("开发工程师");
                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++;
            }
        }

        // 执行单元格自动列宽
        for (int i = 0; i <= 3; i++) {
        for (int i = 0; i <= fields.length; i++) {
            sheet.autoSizeColumn(i);
        }