ES查詢index對應的mapping信息

private void getMappingByIndex(String indices) throws IOException
    {
        
        GetMappingsRequest getMappingsRequest = new GetMappingsRequest();
        getMappingsRequest.indices(indices).types(new String[0]);
        
        GetMappingsResponse response = client.admin().indices().getMappings(getMappingsRequest).actionGet();
        ImmutableOpenMap<String, ImmutableOpenMap<String, MappingMetaData>> mappingsByIndex = response.getMappings();
        for (ObjectObjectCursor<String, ImmutableOpenMap<String, MappingMetaData>> indexEntry : mappingsByIndex) {
            if (indexEntry.value.isEmpty()) {
                continue;
            }
               System.out.println(indexEntry.key);
            for (ObjectObjectCursor<String, MappingMetaData> typeEntry : indexEntry.value) {
                System.out.println((typeEntry.key));
                System.out.println(typeEntry.value.sourceAsMap());
            }
        }

    }