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ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelExporter.java

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+package com.ruoyi.common.utils.poi;
+
+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.FileOutputStream;
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Stream;
+
+public class ExcelExporter {
+    public static void exportExcel(List<Map<String, Object>> dataList, String[] headers, String fileName, HttpServletResponse response) throws IOException {
+        Workbook workbook = new XSSFWorkbook();
+        Sheet sheet = workbook.createSheet("Sheet1");
+
+        // 创建表头
+        Row headerRow = sheet.createRow(0);
+        for (int i = 0; i < headers.length; i++) {
+            headerRow.createCell(i).setCellValue(headers[i]);
+        }
+
+        // 填充数据
+        int rowNum = 1;
+        for (Map<String, Object> data : dataList) {
+            Row row = sheet.createRow(rowNum++);
+            for (int i = 0; i < headers.length; i++) {
+                row.createCell(i).setCellValue(data.get(headers[i]) == null ? "" : data.get(headers[i]).toString());
+            }
+        }
+        // 返回到客户端
+        try {
+            workbook.write(response.getOutputStream());
+            response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
+            response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
+        }catch (IOException e) {
+            e.printStackTrace();
+        }finally {
+            workbook.close();
+        }
+    }
+}