OSS如何生成删除请求的签名url

// 创建请求。GeneratePresignedUrlRequestgeneratePresignedUrlRequest=newGeneratePresignedUrlRequest(bucketName, objectName);
// 设置HttpMethod为DELETE。generatePresignedUrlRequest.setMethod(HttpMethod.DELETE);
// 设置签名URL过期时间，单位为毫秒。Dateexpiration=newDate(newDate().getTime() +3600*1000);
generatePresignedUrlRequest.setExpiration(expiration);
// 生成签名URL。URLurl=ossClient.generatePresignedUrl(generatePresignedUrlRequest);
System.out.println(url);

if (method!=HttpMethod.GET&&method!=HttpMethod.PUT)
thrownewIllegalArgumentException("Only GET or PUT is supported!");