[style] 代码优化

src/main/java/vion/controller/FileController.java

@@ -11,12 +11,12 @@ import org.dromara.hutool.core.date.TimeUtil;
 import org.dromara.hutool.core.io.file.FileNameUtil;
 import org.dromara.hutool.core.io.file.FileUtil;
 import org.dromara.hutool.core.lang.Assert;
-import org.dromara.hutool.core.net.url.UrlEncoder;
 import org.dromara.hutool.core.text.StrUtil;
 import org.dromara.hutool.core.util.ObjUtil;
 import org.dromara.hutool.crypto.SecureUtil;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.core.io.FileSystemResource;
+import org.springframework.http.ContentDisposition;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -30,7 +30,6 @@ import vion.vo.FileInfoVO;
 
 import java.io.File;
 import java.io.IOException;
-import java.nio.charset.StandardCharsets;
 import java.time.LocalDateTime;
 
 @RestController
@@ -68,6 +67,9 @@ public class FileController {
     @SaCheckPermission(value = "file:download", orRole = "admin")
     public ResponseEntity<FileSystemResource> download(Long id) {
         var fileInfo = fileService.getById(id);
+        if (ObjUtil.isNotNull(fileInfo)) {
+            return ResponseEntity.notFound().build();
+        }
         var file = FileUtil.file(fileInfo.getUrl());
 
         if (!FileUtil.exists(file)) {
@@ -76,9 +78,8 @@ public class FileController {
         FileSystemResource resource = new FileSystemResource(file);
 
         HttpHeaders headers = new HttpHeaders();
-        headers.add(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_OCTET_STREAM_VALUE);
-        headers.add(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=" + UrlEncoder.encodeAll(file.getName(),
-                StandardCharsets.UTF_8).replace("+", "%20"));
+        headers.setContentType(MediaType.valueOf(MediaType.APPLICATION_OCTET_STREAM_VALUE));
+        headers.setContentDisposition(ContentDisposition.attachment().filename(file.getName()).build());
 
         return ResponseEntity.ok()
                 .headers(headers)