feat: configurable download origin (gmp.download-origin), defaults to path-only

src/main/java/com/gmp/mock/controller/DocxController.java

@@ -2,6 +2,7 @@ package com.gmp.mock.controller;
 
 import jakarta.validation.Valid;
 
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -19,7 +20,6 @@ import com.gmp.mock.service.DocxService;
 import com.gmp.mock.service.DocxService.CachedResult;
 import com.gmp.mock.service.FileCacheService;
 
-import jakarta.servlet.http.HttpServletRequest;
 
 @RestController
 @RequestMapping("/api/docx")
@@ -27,10 +27,13 @@ public class DocxController {
 
     private final DocxService docxService;
     private final FileCacheService fileCache;
+    private final String downloadOrigin;
 
-    public DocxController(DocxService docxService, FileCacheService fileCache) {
+    public DocxController(DocxService docxService, FileCacheService fileCache,
+                          @Value("${gmp.download-origin:}") String downloadOrigin) {
         this.docxService = docxService;
         this.fileCache = fileCache;
+        this.downloadOrigin = downloadOrigin;
     }
 
     /**
@@ -41,23 +44,23 @@ public class DocxController {
      *   "code": 0,
      *   "msg": "success",
      *   "data": {
-     *     "url": "http://localhost:6666/api/docx/download?id=xxxx",
+     *     "url": "/api/docx/download?id=xxxx",
      *     "fileName": "annualReport.docx"
      *   }
      * }
      */
     @PostMapping("/export")
     public ResponseEntity<ApiResponse<ExportResultData>> exportDocx(
-            @Valid @RequestBody DocxExportRequest request,
+            @Valid @RequestBody DocxExportRequest request
-            HttpServletRequest httpRequest
     ) {
         CachedResult result = docxService.export(request.getExportId(), request.getBusinessData());
 
-        // 构造下载 URL
+        // 构造下载 URL — 如果配置了 gmp.download-origin 则拼上 origin，否则只返回路径
-        String baseUrl = getBaseUrl(httpRequest);
+        String url = downloadOrigin.isBlank()
-        String downloadUrl = baseUrl + "/api/docx/download?id=" + result.key();
+                ? "/api/docx/download?id=" + result.key()
+                : downloadOrigin + "/api/docx/download?id=" + result.key();
 
-        ExportResultData data = new ExportResultData(downloadUrl, result.fileName());
+        ExportResultData data = new ExportResultData(url, result.fileName());
         return ResponseEntity.ok(ApiResponse.ok(data));
     }
 
@@ -74,8 +77,6 @@ public class DocxController {
                     .body(ApiResponse.error(404, "文件不存在或已过期: " + key));
         }
 
-        // 从缓存文件名可以推断，但我们不需要 fileName，因为下载时由客户端决定。
-        // 这里固定一个通用的 Content-Disposition
         return ResponseEntity.ok()
                 .contentType(MediaType.parseMediaType(
                         "application/vnd.openxmlformats-officedocument.wordprocessingml.document"))
@@ -83,14 +84,4 @@ public class DocxController {
                         "attachment; filename=\"document.docx\"")
                 .body(fileBytes);
     }
-
-    private String getBaseUrl(HttpServletRequest request) {
-        String scheme = request.getScheme();
-        String host = request.getServerName();
-        int port = request.getServerPort();
-        if ((scheme.equals("http") && port == 80) || (scheme.equals("https") && port == 443)) {
-            return scheme + "://" + host;
-        }
-        return scheme + "://" + host + ":" + port;
-    }
 }