{"id":40297,"date":"2023-02-07T07:10:16","date_gmt":"2022-11-24T02:58:12","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8spring-boot%e6%9d%a5%e4%bd%bf%e7%94%a8dynamodb%e7%9a%84%e6%9f%a5%e8%af%a2%e6%96%b9%e6%b3%95%e3%80%82\/"},"modified":"2024-04-29T13:28:48","modified_gmt":"2024-04-29T05:28:48","slug":"%e4%bd%bf%e7%94%a8spring-boot%e6%9d%a5%e4%bd%bf%e7%94%a8dynamodb%e7%9a%84%e6%9f%a5%e8%af%a2%e6%96%b9%e6%b3%95%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8spring-boot%e6%9d%a5%e4%bd%bf%e7%94%a8dynamodb%e7%9a%84%e6%9f%a5%e8%af%a2%e6%96%b9%e6%b3%95%e3%80%82\/","title":{"rendered":"\u4f7f\u7528Spring Boot\u6765\u4f7f\u7528DynamoDB\u7684\u67e5\u8be2\u65b9\u6cd5"},"content":{"rendered":"

\u60c5\u51b5<\/h1>\n
package<\/span> com.pontsuyo.anyiine.domain.repository<\/span>;<\/span>\r\n\r\nimport<\/span> com.pontsuyo.anyiine.domain.model.Tweet<\/span>;<\/span>\r\nimport<\/span> java.util.List<\/span>;<\/span>\r\nimport<\/span> org.socialsignin.spring.data.dynamodb.repository.EnableScan<\/span>;<\/span>\r\nimport<\/span> org.springframework.data.repository.CrudRepository<\/span>;<\/span>\r\n\r\n@EnableScan<\/span>\r\npublic<\/span> interface<\/span> TweetRepository<\/span> extends<\/span> CrudRepository<\/span><<\/span>Tweet<\/span>,<\/span> Long<\/span>><\/span> {<\/span>\r\n  @Override<\/span>\r\n  List<\/span><<\/span>Tweet<\/span>><\/span> findAll<\/span>();<\/span>\r\n\r\n  List<\/span><<\/span>Tweet<\/span>><\/span> findAllByType<\/span>(<\/span>String<\/span> type<\/span>);<\/span>  \/\/ <- \u3053\u308c\u306f\u30c0\u30e1\u3068\u3044\u3046\u8a71\u3092\u3057\u307e\u3059<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8fd9\u662f\u6211\u4e3a\u4e86\u5c06DynamoDB\u7528\u4f5cSpring\u5e94\u7528\u7a0b\u5e8f\u7684\u6570\u636e\u5e93\u800c\u521b\u5efa\u7684Repository\u7c7b\u3002\u4f46\u662f\uff0c\u7531\u4e8e\u8fd9\u4e2a\u539f\u56e0\uff0c\u5e94\u7528\u7a0b\u5e8f\u65e0\u6cd5\u542f\u52a8\u3002
\n\u56e0\u6b64\uff0c\u6211\u51b3\u5b9a\u5355\u72ec\u521b\u5efa\u4e00\u4e2a\u65b0\u7684repository\u7c7b\u4f5c\u4e3a\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n
\u73af\u5883\u4fe1\u606f<\/h3>\n
    \n
  • \n
      OSX Catalina<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        \n
      • \n
          spring boot: 2.2.7 RELEASE<\/ul>\n<\/li>\n<\/ul>\n
           <\/p>\n
            \n
          • \n
              spring-data-dynamodb: 5.0.3<\/ul>\n<\/li>\n<\/ul>\n
               <\/p>\n
                JAVA: 12<\/ul>\n
                \u5148\u8bf7\u8bf4\u660e<\/h1>\n
                \u5728Spring\u4e2d\uff0c\u8bbf\u95ee\u6570\u636e\u5e93\u662fRepository\u7684\u804c\u8d23\uff0c\u4f46\u662f\u5982\u679c\u6211\u4eec\u7ee7\u627f\u4e86\u5404\u79cd\u5e93\u63d0\u4f9b\u7684Repository\u63a5\u53e3\uff0c\u5c31\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u7c7b\uff0c\u800c\u4e0d\u9700\u8981\u81ea\u5df1\u51c6\u5907\u5f88\u591a\u65b9\u6cd5\uff0c\u901a\u5e38\u5c31\u8db3\u591f\u4e86\u3002<\/p>\n
                \u5982\u679c\u9009\u62e9DynamoDB\u4f5c\u4e3a\u6570\u636e\u5e93\uff0c\u90a3\u4e48spring-data-dynamodb\u975e\u5e38\u65b9\u4fbf\u3002\u7136\u800c\uff0c\u4f3c\u4e4e\u6ca1\u6709\u5b9e\u73b0\u901a\u8fc7\u67e5\u8be2\u6761\u4ef6\u83b7\u53d6\u6570\u636e\uff08\u5982\u975ehash key\u3001range key\u5b57\u6bb5\u8fdb\u884c\u7b5b\u9009\uff09\u7684\u529f\u80fd\u3002\u56e0\u6b64\uff0c\u5728Spring\u5e94\u7528\u7a0b\u5e8f\u542f\u52a8\u65f6\u4f1a\u629b\u51fa\u9519\u8bef\uff0c\u5bfc\u81f4\u542f\u52a8\u5931\u8d25\u3002<\/p>\n
                \u5b9e\u9645\u51fa\u73b0\u7684\u9519\u8bef<\/h2>\n
                \u5e94\u7528\u7a0b\u5e8f\u542f\u52a8\u65f6\u51fa\u73b0\u4ee5\u4e0b\u9519\u8bef\u3002<\/p>\n
                Caused<\/span> by:<\/span> java<\/span>.<\/span>lang<\/span>.<\/span>IllegalStateException<\/span>:<\/span> You<\/span> have<\/span> defined<\/span> query<\/span> method<\/span> in<\/span> the<\/span> repository<\/span> but<\/span> you<\/span> don<\/span>'<\/span>t<\/span> have<\/span> any<\/span> query<\/span> lookup<\/span> strategy<\/span> defined<\/span>.<\/span> The<\/span> infrastructure<\/span> apparently<\/span> does<\/span> not<\/span> support<\/span> query<\/span> methods<\/span>!<\/span>\r\n    at<\/span> org<\/span>.<\/span>springframework<\/span>.<\/span>data<\/span>.<\/span>repository<\/span>.<\/span>core<\/span>.<\/span>support<\/span>.<\/span>RepositoryFactorySupport<\/span>$QueryExecutorMethodInterceptor<\/span>.<<\/span>init<\/span>>(<\/span>RepositoryFactorySupport<\/span>.<\/span>java<\/span>:<\/span>553<\/span>)<\/span> ~[<\/span>spring<\/span>-<\/span>data<\/span>-<\/span>commons<\/span>-<\/span>2.2<\/span>.<\/span>7<\/span>.<\/span>RELEASE<\/span>.<\/span>jar<\/span>:<\/span>2.2<\/span>.<\/span>7<\/span>.<\/span>RELEASE<\/span>]<\/span>\r\n    at<\/span> org<\/span>.<\/span>springframework<\/span>.<\/span>data<\/span>.<\/span>repository<\/span>.<\/span>core<\/span>.<\/span>support<\/span>.<\/span>RepositoryFactorySupport<\/span>.<\/span>getRepository<\/span>(<\/span>RepositoryFactorySupport<\/span>.<\/span>java<\/span>:<\/span>332<\/span>)<\/span> ~[<\/span>spring<\/span>-<\/span>data<\/span>-<\/span>commons<\/span>-<\/span>2.2<\/span>.<\/span>7<\/span>.<\/span>RELEASE<\/span>.<\/span>jar<\/span>:<\/span>2.2<\/span>.<\/span>7<\/span>.<\/span>RELEASE<\/span>]<\/span>\r\n    at<\/span> org<\/span>.<\/span>springframework<\/span>.<\/span>data<\/span>.<\/span>repository<\/span>.<\/span>core<\/span>.<\/span>support<\/span>.<\/span>RepositoryFactoryBeanSupport<\/span>.<\/span>lambda<\/span>$afterPropertiesSet<\/span>$<\/span>5<\/span>(<\/span>RepositoryFactoryBeanSupport<\/span>.<\/span>java<\/span>:<\/span>297<\/span>)<\/span> ~[<\/span>spring<\/span>-<\/span>data<\/span>-<\/span>commons<\/span>-<\/span>2.2<\/span>.<\/span>7<\/span>.<\/span>RELEASE<\/span>.<\/span>jar<\/span>:<\/span>2.2<\/span>.<\/span>7<\/span>.<\/span>RELEASE<\/span>]<\/span>\r\n    at<\/span> org<\/span>.<\/span>springframework<\/span>.<\/span>data<\/span>.<\/span>util<\/span>.<\/span>Lazy<\/span>.<\/span>getNullable<\/span>(<\/span>Lazy<\/span>.<\/span>java<\/span>:<\/span>212<\/span>)<\/span> ~[<\/span>spring<\/span>-<\/span>data<\/span>-<\/span>commons<\/span>-<\/span>2.2<\/span>.<\/span>7<\/span>.<\/span>RELEASE<\/span>.<\/span>jar<\/span>:<\/span>2.2<\/span>.<\/span>7<\/span>.<\/span>RELEASE<\/span>]<\/span>\r\n    at<\/span> org<\/span>.<\/span>springframework<\/span>.<\/span>data<\/span>.<\/span>util<\/span>.<\/span>Lazy<\/span>.<\/span>get<\/span>(<\/span>Lazy<\/span>.<\/span>java<\/span>:<\/span>94<\/span>)<\/span> ~[<\/span>spring<\/span>-<\/span>data<\/span>-<\/span>commons<\/span>-<\/span>2.2<\/span>.<\/span>7<\/span>.<\/span>RELEASE<\/span>.<\/span>jar<\/span>:<\/span>2.2<\/span>.<\/span>7<\/span>.<\/span>RELEASE<\/span>]<\/span>\r\n    at<\/span> org<\/span>.<\/span>springframework<\/span>.<\/span>data<\/span>.<\/span>repository<\/span>.<\/span>core<\/span>.<\/span>support<\/span>.<\/span>RepositoryFactoryBeanSupport<\/span>.<\/span>afterPropertiesSet<\/span>(<\/span>RepositoryFactoryBeanSupport<\/span>.<\/span>java<\/span>:<\/span>300<\/span>)<\/span> ~[<\/span>spring<\/span>-<\/span>data<\/span>-<\/span>commons<\/span>-<\/span>2.2<\/span>.<\/span>7<\/span>.<\/span>RELEASE<\/span>.<\/span>jar<\/span>:<\/span>2.2<\/span>.<\/span>7<\/span>.<\/span>RELEASE<\/span>]<\/span>\r\n    at<\/span> org<\/span>.<\/span>springframework<\/span>.<\/span>beans<\/span>.<\/span>factory<\/span>.<\/span>support<\/span>.<\/span>AbstractAutowireCapableBeanFactory<\/span>.<\/span>invokeInitMethods<\/span>(<\/span>AbstractAutowireCapableBeanFactory<\/span>.<\/span>java<\/span>:<\/span>1855<\/span>)<\/span> ~[<\/span>spring<\/span>-<\/span>beans<\/span>-<\/span>5.2<\/span>.<\/span>6<\/span>.<\/span>RELEASE<\/span>.<\/span>jar<\/span>:<\/span>5.2<\/span>.<\/span>6<\/span>.<\/span>RELEASE<\/span>]<\/span>\r\n    at<\/span> org<\/span>.<\/span>springframework<\/span>.<\/span>beans<\/span>.<\/span>factory<\/span>.<\/span>support<\/span>.<\/span>AbstractAutowireCapableBeanFactory<\/span>.<\/span>initializeBean<\/span>(<\/span>AbstractAutowireCapableBeanFactory<\/span>.<\/span>java<\/span>:<\/span>1792<\/span>)<\/span> ~[<\/span>spring<\/span>-<\/span>beans<\/span>-<\/span>5.2<\/span>.<\/span>6<\/span>.<\/span>RELEASE<\/span>.<\/span>jar<\/span>:<\/span>5.2<\/span>.<\/span>6<\/span>.<\/span>RELEASE<\/span>]<\/span>\r\n    ...<\/span> 44<\/span> common<\/span> frames<\/span> omitted<\/span>\r\n<\/code><\/pre>\n
                \u4ed4\u7ec6\u770b\u5c31\u4f1a\u53d1\u73b0\uff0c\u8fd9\u4e2a\u9519\u8bef\u662f\u7531Spring\u6846\u67b6\u629b\u51fa\u7684\u3002
                \n\u7c97\u7565\u7ffb\u8bd1\u8fd9\u4e2a\u9519\u8bef\u4fe1\u606f\u662f\uff1a
                \n“\u5c3d\u7ba1\u5728\u6b64repository\u4e2d\u5b9a\u4e49\u4e86query\u65b9\u6cd5\uff0c\u4f46\u672a\u5b9a\u4e49\u67e5\u8be2\u67e5\u627e\u7b56\u7565\u3002\u57fa\u7840\u8bbe\u65bd\u660e\u786e\u4e0d\u652f\u6301query\u65b9\u6cd5\uff01”<\/p>\n
                \u5982\u679c\u5b8c\u5168\u4f9d\u8d56\u4e8eSpring\u5236\u4f5c\u7684\u5e93\uff0c\u5e76\u4e14\u5b9e\u73b0\u4e86repository\uff0c\u90a3\u4e48\u5e94\u8be5\u53ef\u4ee5\u4fdd\u8bc1\u652f\u6301\u67e5\u8be2\u65b9\u6cd5\u3002\u4f46\u662f\u8fd9\u6b21\u4f7f\u7528\u7684spring-data-dynamodb\u4f3c\u4e4e\u6ca1\u6709\u4fdd\u8bc1\u8fd9\u79cd\u652f\u6301\u3002<\/p>\n
                \u56e0\u4e3a\u7f3a\u4e4f\u4fdd\u8bc1\uff0c\u6240\u4ee5\u9996\u5148\u60f3\u5230\u7684\u89e3\u51b3\u65b9\u6cd5\u662f\u4fee\u6539\u67e5\u8be2\u65b9\u6cd5\u7684\u8bbe\u7f6e\uff0c\u4f46\u5b9e\u9645\u4e0a\u8fd9\u4e2a\u5e93\u4f3c\u4e4e\u771f\u7684\u4e0d\u652f\u6301\u67e5\u8be2\u65b9\u6cd5\u3002\uff08\u67e5\u770b\u76f8\u5173\u7684GitHub\u95ee\u9898\uff0c\u53ef\u4ee5\u770b\u5230\u5b83\u66fe\u7ecf\u5728v5.0.3\u66f4\u65b0\u7684TODO\u5217\u8868\u4e2d\uff0c\u4f46\u540e\u6765\u88ab\u53d6\u6d88\u4e86\u3002\u770b\u8d77\u6765\u633a\u68d8\u624b\u7684\u5462…\uff09<\/p>\n
                \u56e0\u6b64\uff0c\u6211\u63a1\u53d6\u4e86\u4e00\u7a2e\u5f37\u884c\u7684\u65b9\u5f0f\u4f86\u81ea\u884c\u5be6\u65bd\u3002\uff08\u53ef\u80fd\u9084\u6709\u5176\u4ed6\u8655\u7406\u65b9\u6cd5\u3002\uff09<\/p>\n
                \u89e3\u51b3\u65b9\u6848<\/h1>\n
                \u4f7f\u7528DynamoDBMapper\u6765\u5b9a\u4e49\u81ea\u5df1\u7684repository\u7b49\u6548\u7c7b\u3002<\/p>\n
                \u6211\u5c06\u4f7f\u7528AWS\u63d0\u4f9b\u7684DynamoDBMapper\u6765\u5b9e\u73b0\u4e00\u4e2aquery\u65b9\u6cd5\uff0c\u4ee5\u6a21\u62dfDynamoDB\u7684\u67e5\u8be2\u641c\u7d22\u3002\u6211\u4f1a\u53c2\u8003AWS\u5b98\u65b9\u6587\u6863\u4e0a\u63d0\u4f9b\u7684\u793a\u4f8b\uff08\u5728\u8fd9\u4e2a\u94fe\u63a5\u7684\u5b9e\u73b0\u4e2d\uff0c\u6a21\u578b\u4e5f\u88ab\u5b9e\u73b0\u5728\u4e86\u76f8\u5f53\u4e8erepository\u7684\u7c7b\u4e2d\uff0c\u4f46\u6211\u4f1a\u5c06\u6a21\u578b\u4f5c\u4e3a\u4e00\u4e2a\u5355\u72ec\u7684\u7c7b\u5b9e\u73b0\uff09\u3002\u8bf7\u53c2\u8003\u4ee5\u4e0b\u94fe\u63a5\uff1a
                \nhttps:\/\/docs.aws.amazon.com\/ja_jp\/amazondynamodb\/latest\/developerguide\/DynamoDBMapper.QueryScanExample.html<\/p>\n
                \u9019\u662f\u6700\u7d42\u5b8c\u6210\u7684\u7d50\u679c\u3002\uff08\u5c0d\u65bc\u9019\u7a2e\u60c5\u6cc1\uff0c\u61c9\u8a72\u4f7f\u7528\u600e\u6a23\u7684\u985e\u5225\u540d\u5462…\uff09
                \n\u5728DynamoDB\u4e2d\uff0c\u6211\u5011\u5c07\u6578\u64da\u5b9a\u7fa9\u70baTweet\u985e\u5225\u3002\u8acb\u60f3\u50cf\u6578\u64da\u5eab\u4e2d\u96c6\u5408\u4e86\u5404\u7a2eTweet\u7684\u4fe1\u606f\u3002
                \n\u9019\u6b21\u53ea\u9700\u8981\u77e5\u9053Tweet\u985e\u5225\u6709\u4e00\u500b\u540d\u70ba”\u985e\u578b”\u7684\u6b04\u4f4d\u5c31\u53ef\u4ee5\u4e86\uff0c\u6c92\u6709\u554f\u984c\u7684\u3002<\/p>\n
                package<\/span> com.pontsuyo.anyiine.domain.repository<\/span>;<\/span>\r\n\r\nimport<\/span> com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper<\/span>;<\/span>\r\nimport<\/span> com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBScanExpression<\/span>;<\/span>\r\nimport<\/span> com.amazonaws.services.dynamodbv2.model.AttributeValue<\/span>;<\/span>\r\nimport<\/span> com.pontsuyo.anyiine.domain.model.Tweet<\/span>;<\/span>\r\nimport<\/span> java.util.List<\/span>;<\/span>\r\nimport<\/span> java.util.Map<\/span>;<\/span>\r\nimport<\/span> org.springframework.stereotype.Repository<\/span>;<\/span>\r\n\r\n\/**\r\n * Dynamo DB \u3078\u306e\u30a2\u30af\u30bb\u30b9\u306b\u4f7f\u7528\u3057\u3066\u3044\u308bspring-data-dynamodb\u306e\u4e2d\u3067\r\n * \u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u306a\u3044\u30e1\u30bd\u30c3\u30c9\uff08query\u6307\u5b9a\u3067\u306escan\u306a\u3069\uff09\u306e\u5b9f\u88c5\r\n *\r\n * issue: https:\/\/github.com\/derjust\/spring-data-dynamodb\/issues\/114\r\n *\/<\/span>\r\n@Repository<\/span>\r\npublic<\/span> class<\/span> TweetRepositoryPlugin<\/span> {<\/span>\r\n\r\n  private<\/span> final<\/span> DynamoDBMapper<\/span> mapper<\/span>;<\/span>\r\n\r\n  public<\/span> TweetRepositoryPlugin<\/span>(<\/span>DynamoDBMapper<\/span> mapper<\/span>)<\/span> {<\/span>\r\n    this<\/span>.<\/span>mapper<\/span> =<\/span> mapper<\/span>;<\/span>\r\n  }<\/span>\r\n\r\n  public<\/span> List<\/span><<\/span>Tweet<\/span>><\/span> findAllByType<\/span>(<\/span>String<\/span> type<\/span>)<\/span> {<\/span>\r\n    DynamoDBScanExpression<\/span> scanExpression<\/span> =<\/span>\r\n        new<\/span> DynamoDBScanExpression<\/span>()<\/span>\r\n            \/\/ \"type\"\u306fDynamoDB\u306e\u4e88\u7d04\u8a9e\u306e\u3088\u3046\u306a\u306e\u3067\u3001<\/span>\r\n            \/\/ \u30af\u30a8\u30ea\u6587\u5b57\u5217\u3067\u306f\u4e00\u65e6\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u3092\u5165\u308c\u3066\u304a\u304d\u3001\u5f8c\u3067\u7f6e\u304d\u63db\u3048\u308b\u3002<\/span>\r\n            .<\/span>withFilterExpression<\/span>(<\/span>\"#t = :val1\"<\/span>)<\/span>\r\n            .<\/span>withExpressionAttributeNames<\/span>(<\/span>     \r\n                Map<\/span>.<\/span>of<\/span>(<\/span>\"#t\"<\/span>,<\/span> \"type\"<\/span>)<\/span>\r\n            )<\/span>\r\n            .<\/span>withExpressionAttributeValues<\/span>(<\/span>\r\n                Map<\/span>.<\/span>of<\/span>(<\/span>\":val1\"<\/span>,<\/span> new<\/span> AttributeValue<\/span>().<\/span>withS<\/span>(<\/span>type<\/span>))<\/span>\r\n            );<\/span>\r\n\r\n    return<\/span> mapper<\/span>.<\/span>scan<\/span>(<\/span>Tweet<\/span>.<\/span>class<\/span>,<\/span> scanExpression<\/span>);<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u5173\u4e8ewithExpressionAttributeNames<\/p>\n
                \u6211\u6b63\u5728\u4f7f\u7528\u6784\u9020\u51fd\u6570\u6ce8\u5165 DynamoDBMapper \u7c7b\u7684\u5b9e\u4f8b mapper\uff0c\u4f46\u8fd9\u4e2a\u5b9e\u4f8b\u662f\u5728\u53e6\u4e00\u4e2a\u540d\u4e3a Config \u7684\u7c7b\u4e2d\u5b9a\u4e49\u5e76\u8fdb\u884c\u4e86 Bean \u6ce8\u518c\u3002<\/p>\n
                package<\/span> com.pontsuyo.anyiine.config<\/span>;<\/span>\r\n\r\nimport<\/span> com.amazonaws.auth.DefaultAWSCredentialsProviderChain<\/span>;<\/span>\r\nimport<\/span> com.amazonaws.regions.Regions<\/span>;<\/span>\r\nimport<\/span> com.amazonaws.services.dynamodbv2.AmazonDynamoDB<\/span>;<\/span>\r\nimport<\/span> com.amazonaws.services.dynamodbv2.AmazonDynamoDBClientBuilder<\/span>;<\/span>\r\nimport<\/span> com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper<\/span>;<\/span>\r\nimport<\/span> org.socialsignin.spring.data.dynamodb.repository.config.EnableDynamoDBRepositories<\/span>;<\/span>\r\nimport<\/span> org.springframework.context.annotation.Bean<\/span>;<\/span>\r\nimport<\/span> org.springframework.context.annotation.Configuration<\/span>;<\/span>\r\n\r\n@Configuration<\/span>\r\n@EnableDynamoDBRepositories<\/span>(<\/span>basePackages<\/span> =<\/span> \"com.pontsuyo.anyiine.domain.repository\"<\/span>)<\/span>\r\npublic<\/span> class<\/span> DynamoDBConfig<\/span> {<\/span>\r\n\r\n  \/**\r\n   * AWS DynamoDB\u306e\u8a2d\u5b9a\r\n   * @see com.amazonaws.auth.DefaultAWSCredentialsProviderChain\r\n   * @return\r\n   *\/<\/span>\r\n  @Bean<\/span>\r\n  public<\/span> AmazonDynamoDB<\/span> amazonDynamoDB<\/span>()<\/span> {<\/span>\r\n    return<\/span> AmazonDynamoDBClientBuilder<\/span>.<\/span>standard<\/span>()<\/span>\r\n        .<\/span>withCredentials<\/span>(<\/span>DefaultAWSCredentialsProviderChain<\/span>.<\/span>getInstance<\/span>())<\/span>\r\n        .<\/span>withRegion<\/span>(<\/span>Regions<\/span>.<\/span>AP_NORTHEAST_1<\/span>)<\/span>\r\n        .<\/span>build<\/span>();<\/span>\r\n  }<\/span>\r\n\r\n  @Bean<\/span>\r\n  public<\/span> DynamoDBMapper<\/span> dynamoDBMapper<\/span>(){<\/span>\r\n    return<\/span> new<\/span> DynamoDBMapper<\/span>(<\/span>amazonDynamoDB<\/span>());<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
                \u8fd9\u662f\u4e00\u4e2a\u8c03\u7528\u6211\u4eec\u8fd9\u6b21\u5b9a\u4e49\u7684\u65b9\u6cd5\u7684Service\u7c7b\u3002\u7531\u4e8e\u5e94\u8be5\u5df2\u7ecf\u6ce8\u5165\u4e86\u67d0\u79cd\u7c7b\u578b\u7684\u4ed3\u5e93\uff0c\u6240\u4ee5\u53ea\u9700\u7b80\u5355\u5730\u6dfb\u52a0\u6ce8\u5165\u5143\u7d20\u5373\u53ef\u3002<\/p>\n
                package<\/span> com.pontsuyo.anyiine.domain.service<\/span>;<\/span>\r\n\r\nimport<\/span> com.pontsuyo.anyiine.controller.model.DestroyRequestParameter<\/span>;<\/span>\r\nimport<\/span> com.pontsuyo.anyiine.controller.model.UpdateRequestParameter<\/span>;<\/span>\r\nimport<\/span> com.pontsuyo.anyiine.domain.model.Tweet<\/span>;<\/span>\r\nimport<\/span> com.pontsuyo.anyiine.domain.repository.TweetRepository<\/span>;<\/span>\r\nimport<\/span> com.pontsuyo.anyiine.domain.repository.TweetRepositoryPlugin<\/span>;<\/span>\r\nimport<\/span> java.util.List<\/span>;<\/span>\r\nimport<\/span> java.util.stream.Collectors<\/span>;<\/span>\r\nimport<\/span> lombok.extern.slf4j.Slf4j<\/span>;<\/span>\r\nimport<\/span> org.springframework.stereotype.Service<\/span>;<\/span>\r\nimport<\/span> twitter4j.Status<\/span>;<\/span>\r\nimport<\/span> twitter4j.Twitter<\/span>;<\/span>\r\nimport<\/span> twitter4j.TwitterException<\/span>;<\/span>\r\n\r\n@Slf4j<\/span>\r\n@Service<\/span>\r\npublic<\/span> class<\/span> TweetService<\/span> {<\/span>\r\n\r\n  private<\/span> final<\/span> TweetRepository<\/span> tweetRepository<\/span>;<\/span>\r\n  private<\/span> final<\/span> TweetRepositoryPlugin<\/span> tweetRepositoryPlugin<\/span>;<\/span> \/\/ <- \u4eca\u56de\u8ffd\u52a0\u3057\u305frepository<\/span>\r\n\r\n  private<\/span> final<\/span> Twitter<\/span> twitter<\/span>;<\/span>\r\n\r\n  public<\/span> TweetService<\/span>(<\/span>TweetRepository<\/span> tweetRepository<\/span>,<\/span> TweetRepositoryPlugin<\/span> tweetRepositoryPlugin<\/span>,<\/span> Twitter<\/span> twitter<\/span>)<\/span> {<\/span>\r\n    this<\/span>.<\/span>tweetRepository<\/span> =<\/span> tweetRepository<\/span>;<\/span>\r\n    this<\/span>.<\/span>tweetRepositoryPlugin<\/span> =<\/span> tweetRepositoryPlugin<\/span>;<\/span>  \/\/ <- \u4eca\u56de\u8ffd\u52a0\u3057\u305frepository<\/span>\r\n    this<\/span>.<\/span>twitter<\/span> =<\/span> twitter<\/span>;<\/span>\r\n  }<\/span>\r\n\r\n  \/\/ \u4ee5\u4e0b\u3001\u30e1\u30bd\u30c3\u30c9\u5b9a\u7fa9\u8272\u3005\u3002<\/span>\r\n<\/code><\/pre>\n
                \u6700\u540e<\/h1>\n
                \u8bf7\u53c2\u8003\u5b98\u65b9\u89e3\u91ca\uff0c\u5b83\u5bf9\u5404\u79cd\u67e5\u8be2\u6a21\u5f0f\u7684\u5b9e\u65bd\u65b9\u6cd5\u8fdb\u884c\u4e86\u8be6\u7ec6\u8bf4\u660e\u3002\u5982\u679c\u672c\u6587\u7684\u89e3\u91ca\u4e0d\u8db3\u591f\uff0c\u8bf7\u53c2\u8003\u5b83\u3002<\/p>\n
                \u5982\u679c\u6709\u5176\u4ed6\u5904\u7406\u65b9\u6cd5\u7684\u4eba\uff0c\u8bf7\u544a\u8bc9\u6211\u3002<\/p>\n
                \u6ce8\u610f\uff1a\u5173\u4e8e.withExpressionAttributeNames()<\/h2>\n
                \u5728\u4ee3\u7801\u4e2d\u5305\u542b\u4e86\u6ce8\u91ca, \u4f7f\u7528.withExpressionAttributeNames()\u6765\u66ff\u6362\u5b57\u6bb5\u540d\u3002
                \n\u8fd9\u6837\u505a\u7684\u539f\u56e0\u662f\uff0c\u5b9e\u9645\u4e0a\u6211\u60f3\u8981\u6307\u5b9a\u7684\u641c\u7d22\u67e5\u8be2\u4e2d\u5305\u542b\u4e86\u4e00\u4e2a\u540d\u4e3a”type”\u7684\u5b57\u6bb5\uff0c\u4f46\u5b83\u662fDynamoDB\u7684\u4fdd\u7559\u5b57\uff0c\u6240\u4ee5\u6700\u521d\u4f1a\u629b\u51fa\u4ee5\u4e0b\u9519\u8bef\u3002<\/p>\n
                Invalid UpdateExpression: Attribute name is a reserved keyword; reserved keyword: type\r\n<\/code><\/pre>\n
                \u901a\u8fc7\u66ff\u6362\u5148\u524d\u7684\u5b57\u6bb5\u540d\uff0c\u53ef\u4ee5\u907f\u514d\u6b64\u9519\u8bef\u3002<\/p>\n
                \u8bf7\u53c2\u8003\u4ee5\u4e0b\u94fe\u63a5\uff1ahttps:\/\/note.kiriukun.com\/entry\/20190212-attribute-name-is-a-reserved-keyword-in-dynamodb<\/p>\n","protected":false},"excerpt":{"rendered":"
                \u60c5\u51b5 package com.pontsuyo.anyiine.domain.repository; impo […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-40297","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u4f7f\u7528Spring Boot\u6765\u4f7f\u7528DynamoDB\u7684\u67e5\u8be2\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528spring-boot\u6765\u4f7f\u7528dynamodb\u7684\u67e5\u8be2\u65b9\u6cd5\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528Spring Boot\u6765\u4f7f\u7528DynamoDB\u7684\u67e5\u8be2\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"\u60c5\u51b5 package com.pontsuyo.anyiine.domain.repository; 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