优化。

src/main/java/thyyxxk/webserver/service/utilities/CreateExcelFileService.java

@@ -17,15 +17,14 @@ import java.util.Map;
 public class CreateExcelFileService {
     private final WxUploadFileService wxUploadFileService;
     private static HSSFWorkbook hWorkbook = null;
-    private static File file = null;
 
     @Autowired
     public CreateExcelFileService(WxUploadFileService wxUploadFileService) {
         this.wxUploadFileService = wxUploadFileService;
     }
 
-    private static void createExcelXls(String sheetName, String[] titleRow) throws Exception {
-        file = File.createTempFile("supply", ".xls");
+    private File createExcelXls(String sheetName, String[] titleRow) throws Exception {
+        File file = File.createTempFile("supply", ".xls");
         hWorkbook = new HSSFWorkbook();
 
         HSSFCellStyle hSSFCellStyle = hWorkbook.createCellStyle();
@@ -44,9 +43,10 @@ public class CreateExcelFileService {
         FileOutputStream fileOutputStream = new FileOutputStream(file);
         hWorkbook.write(fileOutputStream);
         fileOutputStream.close();
+        return file;
     }
 
-    private void writeToExcelXls(String touserFrom, String sheetName,
+    private void writeToExcelXls(String touserFrom, String sheetName, File file,
                                         List<Map<String, String>> mapList) throws Exception {
         hWorkbook = new HSSFWorkbook(Files.newInputStream(file.toPath()));
         FileOutputStream fileOutputStream;
@@ -73,7 +73,6 @@ public class CreateExcelFileService {
 
         fileOutputStream = new FileOutputStream(file);
         hWorkbook.write(fileOutputStream);
-        System.out.println("excel文件已生成。");
         fileOutputStream.close();
         wxUploadFileService.upload(touserFrom, file);
     }
@@ -81,8 +80,8 @@ public class CreateExcelFileService {
     public void executeWriteExcel(String touserFrom, Map<String, List<Map<String, String>>> excelData) throws Exception {
         String sheetName = "物料申领";
         String[] title = {"申请人", "申请科室", "特殊情况", "库存编号", "名称", "规格", "数量", "单位"};
-        createExcelXls(sheetName, title);
-        writeToExcelXls(touserFrom, sheetName, excelData.get(sheetName));
+        File file = createExcelXls(sheetName, title);
+        writeToExcelXls(touserFrom, sheetName, file, excelData.get(sheetName));
     }
 }