我试图找出从Dynamo中的项中删除属性的最佳方法。下面是我尝试过的,但我得到了一个例外,即DELETE对N或S类型都不支持。at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:169) at >com.amazonaws.services.dynamodb.AmazonDynamoDBClient.invoke(AmazonDynamoDBClient.java:675) at >com.amazonaws.services.dyna