删除对象

String bucket = "examplebucket-1250000000"; //存储桶名称，格式：BucketName-APPID
String cosPath = "exampleobject"; //对象在存储桶中的位置标识符，即对象键

DeleteObjectRequest deleteObjectRequest = new DeleteObjectRequest(bucket,
        cosPath);
cosXmlService.deleteObjectAsync(deleteObjectRequest,
        new CosXmlResultListener() {
    @Override
    public void onSuccess(CosXmlRequest cosXmlRequest, CosXmlResult result) {
        DeleteObjectResult deleteObjectResult = (DeleteObjectResult) result;
    }

    // 如果您使用 kotlin 语言来调用，请注意回调方法中的异常是可空的，否则不会回调 onFail 方法，即：
    // clientException 的类型为 CosXmlClientException?，serviceException 的类型为 CosXmlServiceException?
    @Override
    public void onFail(CosXmlRequest cosXmlRequest,
                       @Nullable CosXmlClientException clientException,
                       @Nullable CosXmlServiceException serviceException) {
        if (clientException != null) {
            clientException.printStackTrace();
        } else {
            serviceException.printStackTrace();
        }
    }
});

// 存储桶名称，由 bucketname-appid 组成，appid 必须填入，可以在 COS 控制台查看存储桶名称。 https://console.cloud.tencent.com/cos5/bucket
String bucket = "examplebucket-1250000000";
List<String> objectList = new ArrayList<String>();
objectList.add("exampleobject1"); //对象在存储桶中的位置标识符，即对象键
objectList.add("exampleobject2"); //对象在存储桶中的位置标识符，即对象键

DeleteMultiObjectRequest deleteMultiObjectRequest =
        new DeleteMultiObjectRequest(bucket, objectList);
// Quiet 模式只返回报错的 Object 信息。否则返回每个 Object 的删除结果。
deleteMultiObjectRequest.setQuiet(true);
cosXmlService.deleteMultiObjectAsync(deleteMultiObjectRequest,
        new CosXmlResultListener() {
    @Override
    public void onSuccess(CosXmlRequest cosXmlRequest, CosXmlResult result) {
        DeleteMultiObjectResult deleteMultiObjectResult =
                (DeleteMultiObjectResult) result;
    }

    // 如果您使用 kotlin 语言来调用，请注意回调方法中的异常是可空的，否则不会回调 onFail 方法，即：
    // clientException 的类型为 CosXmlClientException?，serviceException 的类型为 CosXmlServiceException?
    @Override
    public void onFail(CosXmlRequest cosXmlRequest,
                       @Nullable CosXmlClientException clientException,
                       @Nullable CosXmlServiceException serviceException) {
        if (clientException != null) {
            clientException.printStackTrace();
        } else {
            serviceException.printStackTrace();
        }
    }
});

// 存储桶名称，由 bucketname-appid 组成，appid 必须填入，可以在 COS 控制台查看存储桶名称。 https://console.cloud.tencent.com/cos5/bucket
String bucket = "examplebucket-1250000000";
String prefix = "folder1/"; //指定前缀

GetBucketRequest getBucketRequest = new GetBucketRequest(bucket);
getBucketRequest.setPrefix(prefix);

// prefix 表示要删除的文件夹
getBucketRequest.setPrefix(prefix);
// 设置最大遍历出多少个对象, 一次 listobject 最大支持1000
getBucketRequest.setMaxKeys(1000);
GetBucketResult getBucketResult = null;

do {
    try {
        getBucketResult = cosXmlService.getBucket(getBucketRequest);
        List<ListBucket.Contents> contents = getBucketResult.listBucket.contentsList;
        DeleteMultiObjectRequest deleteMultiObjectRequest = new DeleteMultiObjectRequest(bucket);
        for (ListBucket.Contents content : contents) {
            deleteMultiObjectRequest.setObjectList(content.key);
        }
        cosXmlService.deleteMultiObject(deleteMultiObjectRequest);
        getBucketRequest.setMarker(getBucketResult.listBucket.nextMarker);
    } catch (CosXmlClientException e) {
        e.printStackTrace();
        return;
    } catch (CosXmlServiceException e) {
        e.printStackTrace();
        return;
    }
} while (getBucketResult.listBucket.isTruncated);