已弃用的 AmazonDynamoDBClient 的替代方案是什么? [英] What is the alternative for AmazonDynamoDBClient that got deprecated?

问题描述

有谁知道什么取代了 AmazonDynamoDBClient?在文档中找不到任何内容

Does anyone know what has replaced AmazonDynamoDBClient? Couldn't find anything in the documentation

包 - com.amazonaws.services.dynamodbv2

Package - com.amazonaws.services.dynamodbv2

    AmazonDynamoDBClient amazonDynamoDBClient = new AmazonDynamoDBClient();

推荐答案

根据 API doc，应使用构建器类(例如 AmazonDynamoDBClientBuilder)来创建实例.

As per the API doc, the builder class (e.g. AmazonDynamoDBClientBuilder) should be used to create the instance.

使用构建器类的示例代码:-

我已经为本地 DynamoDB 创建了客户端.

I have create the client for DynamoDB local.

DynamoDB dynamoDB = new DynamoDB(AmazonDynamoDBClientBuilder.standard().withEndpointConfiguration(new EndpointConfiguration("http://localhost:8000", "us-east-1")).build());

Table table = dynamoDB.getTable("Movies");

使用 DynamoDB 表类进行扫描:-

private static void findProductsForPriceLessThanZero() {

        Table table = dynamoDB.getTable(tableName);

        Map<String, Object> expressionAttributeValues = new HashMap<String, Object>();
        expressionAttributeValues.put(":pr", 100);

        ItemCollection<ScanOutcome> items = table.scan(
            "Price < :pr", //FilterExpression
            "Id, Title, ProductCategory, Price", //ProjectionExpression
            null, //ExpressionAttributeNames - not used in this example 
            expressionAttributeValues);

        System.out.println("Scan of " + tableName + " for items with a price less than 100.");
        Iterator<Item> iterator = items.iterator();
        while (iterator.hasNext()) {
            System.out.println(iterator.next().toJSONPretty());
        }    
    }

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