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我正在使用JEST访问Elasticsearch，到目前为止它工作正常。现在我想从我的应用程序管理索引/类型映射，所以我按照JEST网站上的一个示例进行操作，但我收到如下错误。

RootObjectMapper.Builder rootObjectMapperBuilder = new RootObjectMapper.Builder("person_mapping").add(
                    new StringFieldMapper.Builder("lastname").store(true));
Builder builder = new DocumentMapper.Builder("indexName", null, rootObjectMapperBuilder);

在以 .开头的最后一行引发错误new DocumentMapper.Builder ...。它相当内部但不知道如何解决这个问题。

java.lang.NullPointerException: null
    at org.elasticsearch.Version.indexCreated(Version.java:481) ~[elasticsearch-1.7.2.jar:na]
    at org.elasticsearch.index.mapper.core.NumberFieldMapper.<init>(NumberFieldMapper.java:206) ~[elasticsearch-1.7.2.jar:na]
    at org.elasticsearch.index.mapper.core.IntegerFieldMapper.<init>(IntegerFieldMapper.java:132) ~[elasticsearch-1.7.2.jar:na]
    at org.elasticsearch.index.mapper.internal.SizeFieldMapper.<init>(SizeFieldMapper.java:104) ~[elasticsearch-1.7.2.jar:na]
    at org.elasticsearch.index.mapper.internal.SizeFieldMapper.<init>(SizeFieldMapper.java:99) ~[elasticsearch-1.7.2.jar:na]
    at org.elasticsearch.index.mapper.DocumentMapper$Builder.<init>(DocumentMapper.java:182) ~[elasticsearch-1.7.2.jar:na]

有没有人有一些维护映射的工作示例Elasticsearchwith JEST？

编辑#1：集成测试对我没有帮助:-(

我已经查看了JEST专注于映射的集成测试https://github.com/searchbox-io/Jest/blob/master/jest/src/test/java/io/searchbox/indices/PutMappingIntegrationTest.java#L46它没有帮助。我不知道从哪里来client()……根据其他搜索，它似乎来自本机 JAVA API，而不是REST？知道如何使用它或 client() 来自哪里吗？

GetSettingsResponse getSettingsResponse =
                client().admin().indices().getSettings(new GetSettingsRequest().indices(INDEX_NAME)).actionGet();
DocumentMapper documentMapper = new DocumentMapper
                    .Builder(INDEX_NAME, getSettingsResponse.getIndexToSettings().get(INDEX_NAME), rootObjectMapperBuilder).build(null);

解决了！

DocumentMapper.Builder需要设置参数。Null 在这里不起作用。可以像这样手动创建设置

Settings indexSettings = ImmutableSettings.settingsBuilder()
                .put("number_of_shards", 1)
                .put("number_of_replicas", 1)
                .put("index.version.created",99999)
                .build();       
Builder builder = new DocumentMapper.Builder("indexName",indexSettings, rootObjectMapperBuilder);

不，我看不到空指针错误。

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