feat: support presigned url upload

open-isle-cli/src/utils/vditor.js

@@ -76,29 +76,22 @@ export function createVditor(editorId, options = {}) {
       'upload'
     ],
     upload: {
-      fieldName: 'file',
-      url: `${API_BASE_URL}/api/upload`,
       accept: 'image/*,video/*',
       multiple: false,
-      headers: { Authorization: `Bearer ${getToken()}` },
-      format(files, responseText) {
-        const res = JSON.parse(responseText)
-        if (res.code === 0) {
-          return JSON.stringify({
-            code: 0,
-            msg: '',
-            data: {
-              errFiles: [],
-              succMap: { [files[0].name]: res.data.url }
-            }
-          })
-        } else {
-          return JSON.stringify({
-            code: 1,
-            msg: '上传失败',
-            data: { errFiles: files.map(f => f.name), succMap: {} }
-          })
-        }
+      handler: async (files) => {
+        const file = files[0]
+        const res = await fetch(`${API_BASE_URL}/api/upload/presign?filename=${encodeURIComponent(file.name)}`, {
+          headers: { Authorization: `Bearer ${getToken()}` }
+        })
+        if (!res.ok) return '获取上传地址失败'
+        const info = await res.json()
+        const put = await fetch(info.uploadUrl, { method: 'PUT', body: file })
+        if (!put.ok) return '上传失败'
+        return JSON.stringify({
+          code: 0,
+          msg: '',
+          data: { errFiles: [], succMap: { [file.name]: info.fileUrl } }
+        })
       }
     },
     toolbarConfig: { pin: true },

src/main/java/com/openisle/controller/UploadController.java

@@ -74,4 +74,9 @@ public class UploadController {
             return ResponseEntity.internalServerError().body(Map.of("code", 3, "msg", "Upload failed"));
         }
     }
+
+    @GetMapping("/presign")
+    public java.util.Map<String, String> presign(@RequestParam("filename") String filename) {
+        return imageUploader.presignUpload(filename);
+    }
 }

src/main/java/com/openisle/service/CosImageUploader.java

@@ -6,6 +6,8 @@ import com.qcloud.cos.auth.BasicCOSCredentials;
 import com.qcloud.cos.auth.COSCredentials;
 import com.qcloud.cos.model.ObjectMetadata;
 import com.qcloud.cos.model.PutObjectRequest;
+import com.qcloud.cos.http.HttpMethodName;
+import com.qcloud.cos.model.GeneratePresignedUrlRequest;
 import com.qcloud.cos.region.Region;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.scheduling.concurrent.CustomizableThreadFactory;
@@ -98,4 +100,25 @@ public class CosImageUploader extends ImageUploader {
             logger.warn("Failed to delete image {} from COS", key, e);
         }
     }
+
+    @Override
+    public java.util.Map<String, String> presignUpload(String filename) {
+        String ext = "";
+        int dot = filename.lastIndexOf('.');
+        if (dot != -1) {
+            ext = filename.substring(dot);
+        }
+        String randomName = java.util.UUID.randomUUID().toString().replace("-", "") + ext;
+        String objectKey = UPLOAD_DIR + randomName;
+        java.util.Date expiration = new java.util.Date(System.currentTimeMillis() + 15 * 60 * 1000L);
+        GeneratePresignedUrlRequest req = new GeneratePresignedUrlRequest(bucketName, objectKey, HttpMethodName.PUT);
+        req.setExpiration(expiration);
+        java.net.URL url = cosClient.generatePresignedUrl(req);
+        String fileUrl = baseUrl + "/" + objectKey;
+        return java.util.Map.of(
+                "uploadUrl", url.toString(),
+                "fileUrl", fileUrl,
+                "key", objectKey
+        );
+    }
 }

src/main/java/com/openisle/service/ImageUploader.java

@@ -38,6 +38,14 @@ public abstract class ImageUploader {
 
     protected abstract void deleteFromStore(String key);
 
+    /**
+     * Generate a presigned PUT URL for direct browser upload.
+     * Default implementation is unsupported.
+     */
+    public java.util.Map<String, String> presignUpload(String filename) {
+        throw new UnsupportedOperationException("presignUpload not supported");
+    }
+
     /** Extract COS URLs from text. */
     public Set<String> extractUrls(String text) {
         Set<String> set = new HashSet<>();