提交

lastleg-service/src/main/java/com/baiyue/lastleg/controller/LastlegOrderController.java

@@ -32,6 +32,7 @@ import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestHeader;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.servlet.mvc.method.annotation.StreamingResponseBody;
 import org.springframework.web.server.ResponseStatusException;
 
 import java.nio.charset.StandardCharsets;
@@ -121,15 +122,16 @@ public class LastlegOrderController {
     @GetMapping(value = "/api/platform/v1/last-leg/orders/export", produces = "text/csv")
     @PreAuthorize("hasAuthority('" + OverseasPermissions.LAST_MILE_ORDER_EXPORT + "')")
     @Operation(summary = "Export filtered tail-leg orders as UTF-8 CSV", description = "Required authority: " + OverseasPermissions.LAST_MILE_ORDER_EXPORT)
-    public ResponseEntity<byte[]> export(
+    public ResponseEntity<StreamingResponseBody> export(
         @AuthenticationPrincipal AuthenticatedUser user,
         @RequestParam(required = false) String customerId,
         @Valid LastlegOrderRequests.Query query) {
         byte[] body = orderService.exportCsv(platformScope(user, customerId), query);
+        StreamingResponseBody stream = output -> { output.write(body); output.flush(); };
         return ResponseEntity.ok()
             .contentType(new MediaType("text", "csv", StandardCharsets.UTF_8))
             .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=lastleg-orders.csv")
-            .body(body);
+            .body(stream);
     }
 
     @PutMapping("/api/platform/v1/last-leg/orders/{id}/destination")