下载excel 乱码问题

service/view/src/main/java/com/founder/view/controller/TbStLayerDataController.java

@@ -55,6 +55,7 @@ public class TbStLayerDataController {
                                     @RequestParam(required = false) String lrdwdc, HttpServletResponse response) {
         TbStLayer tbStLayer = new TbStLayer();
         String layerId = KeyUtil.getUUIDKey("L");
+        ServletOutputStream outputStream = null;
         try {
             tbStLayer.setXxzjbh(layerId);
             tbStLayer.setName(name);
@@ -192,18 +193,19 @@ public class TbStLayerDataController {
                     rowData.createCell(3).setCellValue(timeFormat);
                 }
                 //通过输出流下载
-                ServletOutputStream outputStream = response.getOutputStream();
-                //设置文件响应输出格式
+                response.setCharacterEncoding("UTF-8");
                 response.setContentType("application/vnd.ms-excel");
                 response.setHeader("Content-Disposition", "attachment;filename=error.xlsx");
-                wb.write(outputStream);
+                outputStream = response.getOutputStream();
+                //设置文件响应输出格式
+                //wb.write(outputStream);
                 outputStream.flush();
                 outputStream.close();
             }
-            return MapRestResult.build(200,"数据上传成功！",null);
+            return MapRestResult.build(200,"数据上传成功！",outputStream);
         } catch (Exception e) {
             e.printStackTrace();
-            //如果失败了就将之前的数据删除....
+            //如果保存数据、poi生成excel失败了就将之前的数据删除....
             tbStLayerService.removeById(layerId);
             accidentPointService.deleteByGlId(layerId);
             return MapRestResult.build(500,"数据上传失败！",null);