Object Tag

Updated at：2025-11-03

Set object tags

Currently, BOS supports two ways to set object tagging. The first is to use the Canned method. When using putObjectTagging, set the tag by configuring the cannedTag field of PutObjectTaggingRequest. The second way is to construct an object tag json. The Java SDK has encapsulated both methods. For detailed information, please refer to Object Tags. The specific demos are as follows

Set object tags via the Canned method

                Java
                
                String objectTagString = "key1=value1&key2=values2";
PutObjectTaggingRequest request = new PutObjectTaggingRequest(bucketName,ObjectName,objectTagString);
client.putObjectTagging(request);

Set object tagging by constructing a structure

                Java
                
            

                List<ObjectTag> objectTags = new ArrayList<>();
Map<String ,String> map = new HashMap<>();
map.put("k1","v1");
map.put("k2","v2");
objectTags.add(ObjectTag.builder().tagInfo(map).build());
this.client.putObjectTagging(bucketName,objectName,objectTags);
            

The fields of the ObjectTag structure are as follows:

Parameters	Description
tagInfo	Hash map, tag information
+key	String, tag key
+value	String, tag value

View object tags

The following code can be used to check the object permissions:

                Java
                
                GetObjectTaggingResponse response =  this.client.getObjectTagging(bucketName,objectName);
System.out.println(response.toString());

Delete object tags

The following code can be used to delete the object permissions:

                Java
                
                DeleteObjectTaggingRequest request = new DeleteObjectTaggingRequest("yourBucketName","objectKey");
this.client.deleteObjectTagging(request);

List files in the storage space

Get and update file meta information