fix: return absolute upload file urls

src/main/java/com/sztzjy/linkCommerce/controller/common/CommonUploadController.java

@@ -1,6 +1,7 @@
 package com.sztzjy.linkCommerce.controller.common;
 
 import com.sztzjy.linkCommerce.util.file.IFileUtil;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestPart;
@@ -17,6 +18,9 @@ public class CommonUploadController {
     @Resource
     private IFileUtil fileUtil;
 
+    @Value("${file.url}")
+    private String fileUrl;
+
     @PostMapping("/upload")
     public Map<String, Object> upload(@RequestPart("file") MultipartFile file) {
         Map<String, Object> result = new HashMap<>();
@@ -27,7 +31,7 @@ public class CommonUploadController {
         }
 
         String filePath = fileUtil.upload(file);
-        String publicPath = "/file" + filePath;
+        String publicPath = publicFileUrl(filePath);
         result.put("code", 200);
         result.put("msg", "上传成功");
         result.put("fileName", publicPath);
@@ -35,4 +39,13 @@ public class CommonUploadController {
         result.put("originalFilename", file.getOriginalFilename());
         return result;
     }
+
+    private String publicFileUrl(String filePath) {
+        String baseUrl = fileUrl == null ? "" : fileUrl.trim();
+        while (baseUrl.endsWith("/")) {
+            baseUrl = baseUrl.substring(0, baseUrl.length() - 1);
+        }
+        String relativePath = filePath == null ? "" : filePath.trim();
+        return baseUrl + (relativePath.startsWith("/") ? relativePath : "/" + relativePath);
+    }
 }

src/main/resources/application-dev.yml

@@ -21,7 +21,7 @@ spring:
 file:
   type: local
   path: E:/workspace/dianshang/link_commerce/uploadFile
-  url: "http://localhost:7548/file"
+  url: ${FILE_URL:http://localhost:7548/file}
   #path: D:/tianzeProject/linkCommerce/
   #url: "http://192.168.2.8:147/file"
 

src/test/java/com/sztzjy/linkCommerce/controller/common/CommonUploadControllerTest.java

@@ -0,0 +1,40 @@
+package com.sztzjy.linkCommerce.controller.common;
+
+import com.sztzjy.linkCommerce.util.file.IFileUtil;
+import org.junit.jupiter.api.Test;
+import org.springframework.mock.web.MockMultipartFile;
+import org.springframework.test.util.ReflectionTestUtils;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+class CommonUploadControllerTest {
+
+    @Test
+    void uploadReturnsAbsoluteConfiguredFileUrl() {
+        IFileUtil fileUtil = mock(IFileUtil.class);
+        when(fileUtil.upload(any(MultipartFile.class))).thenReturn("/2026/8/1/example.docx");
+        CommonUploadController controller = new CommonUploadController();
+        ReflectionTestUtils.setField(controller, "fileUtil", fileUtil);
+        ReflectionTestUtils.setField(controller, "fileUrl", "https://files.example.com/file/");
+
+        MockMultipartFile file = new MockMultipartFile(
+                "file",
+                "case.docx",
+                "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+                "case".getBytes(StandardCharsets.UTF_8)
+        );
+
+        Map<String, Object> result = controller.upload(file);
+
+        assertEquals("https://files.example.com/file/2026/8/1/example.docx", result.get("url"));
+        assertEquals(result.get("url"), result.get("fileName"));
+        assertEquals("case.docx", result.get("originalFilename"));
+    }
+}