小编Nik*_*hil的帖子

我开始阅读"学习Spring Boot 2.0 - 第二版:简化基于微服务和反应式编程的快速闪存应用程序的开发",并且遇到了第一个示例程序之一的问题.

当我http://localhost:8080/chapters对它进行GET 返回时:

[
    {},
    {},
    {}
]

代替:

[
    {"id": 1,
     "name": "Quick Start with Java"},
    {"id":,
     "name": "Reactive Web with Spring Boot"},
    {"id": 3,
     "name": ... and more!"}
]

这是我的代码(减去进口):

@Data
@Document
public class Chapter {

    @Id
    private String id;
    private String name;

    public Chapter(String name) {
        this.name = name;
    }
}


public interface ChapterRepository extends ReactiveCrudRepository<Chapter, String>{
}

@Configuration
public class LoadDatabase {

@Bean
CommandLineRunner init(ChapterRepository repository) {
    return args -> …

我有一个问题

CONSTRUCT { ?highValForeignTran ?hvFTPred ?hvFTObj . }
WHERE { ?highValForeignTran vocab:accounttransactions_transactionCurrency "USD" .
?highValForeignTran vocab:accounttransactions_transactionValue ?tranValue .
?highValForeignTran vocab:accounttransactions_transactionDate ?tranDate .
?highValForeignTran ?hvFTPred ?hvFTObj .
FILTER ( ?tranValue > 10000) .
FILTER (  ?tranDate >= "2013-11-23"^^xsd:date  && ?tranDate <= "2013-11-23"^^xsd:date) .
}

返回结果:

<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:vocab="http://localhost:2020/resource/vocab/"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns:db="http://localhost:2020/resource/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:map="http://localhost:2020/resource/#">
<vocab:accounttransactions rdf:about="http://localhost:2020/resource/accounttransactions/1">
<vocab:accounttransactions_id rdf:datatype="http://www.w3.org/2001/XMLSchema#integer"
>1</vocab:accounttransactions_id>
<vocab:accounttransactions_transactionCurrency>USD</vocab:accounttransactions_transactionCurrency>
<vocab:accounttransactions_originAccountNumber>DB48939239</vocab:accounttransactions_originAccountNumber>
<vocab:accounttransactions_transactionType>Cr</vocab:accounttransactions_transactionType>
    <vocab:accounttransactions_transactionDate rdf:datatype="http://www.w3.org/2001/XMLSchema#date"
>2013-11-23</vocab:accounttransactions_transactionDate>
<vocab:accounttransactions_destinationAccountId rdf:resource="http://localhost:2020/resource/bankaccounts/1"/>
<vocab:accounttransactions_transactionValue rdf:datatype=
"http://www.w3.org/2001/XMLSchema#decimal">12000</vocab:accounttransactions_transactionValue>
<rdfs:label>accounttransactions #1</rdfs:label>
<vocab:accounttransactions_destinationAccountNumber>47321896544567</vocab:accounttransactions_destinationAccountNumber>
</vocab:accounttransactions>
</rdf:RDF>

当我尝试使用Jena解析它时,我只得到一个代表外部accountTransactions三元组的三元组:

{"http://localhost:2020/resource/accounttransactions/1":
 {"subject":"http://localhost:2020/resource/accounttransactions/1",
  "predicate":"http://www.w3.org/1999/02/22-rdf-syntax-ns#type",
  "object":"http://localhost:2020/resource/vocab/accounttransactions"}
}

我不知道为什么其他三元组嵌套在里面,但我真的需要能够解析它们并将它们作为JSON发送.这是我的代码: …