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feat: support presigned url upload

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Tim
2025-07-31 22:34:27 +08:00
parent 68e3daa736
commit ea17240cf1
4 changed files with 50 additions and 21 deletions
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5
src/main/java/com/openisle/controller/UploadController.java
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@@ -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);
}
}

23
src/main/java/com/openisle/service/CosImageUploader.java
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@@ -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
);
}
}

8
src/main/java/com/openisle/service/ImageUploader.java
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@@ -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<>();