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我对本机 elasticsearch java api 有问题。我想创建一种方法来按名称属性搜索对象。到目前为止很容易，之后我想为这个方法创建一个 JUnit 测试，这里开始了问题。

    @Test
public void nameSearchTest() throws ElasticSearchUnavailableException, IOException{
    String nameToSearch = "fuzzyText";
    TrainingToCreate t = new TrainingToCreate();
    t.setName(nameToSearch);
    //Create two Trainings to find sth
    String id1 = ElasticIndexer.index(t);
    String id2 = ElasticIndexer.index(t);
    //For creating delay, throws Exception if id doesn't exist
    ElasticGetter.getTrainingById(id1);
    ElasticGetter.getTrainingById(id2);

    int hits = 0;
    ArrayList<Training> trainings = ElasticSearch.fuzzySearchTrainingByName(nameToSearch, Integer.MAX_VALUE, 0);
    System.out.println("First id: " + id1);
    System.out.println("Second id: " + id2);
    String idOfTraining;
    if(trainings.size() == 0){
        System.out.println("Zero hits could be found.");
    }
    //just for printing id's of results
    //-------------------------------------------------
    for (int i = 0; i < trainings.size(); i++) {
        idOfTraining = trainings.get(i).getId();
        System.out.println("Training: "+i+" id: "+ idOfTraining);
    }
    //-------------------------------------------------
    for (Training training : trainings) {
        if(training.getId().equals(id1)||training.getId().equals(id2)){
            hits++;
        }
    }
    assertTrue(hits>=2);
    ElasticDelete.deleteTrainingById(id1);
    ElasticDelete.deleteTrainingById(id2);
}

有时这个测试没有问题，有时搜索结果什么都不包含，即使我创建了一些文档以确保可以找到某些东西。但是，如果我查看 elasticsearch 的数据库，文档存在，所以我想我的实现不正确或者搜索 api 有严重的延迟。

这里是正在测试的代码：

public static ArrayList<Training> fuzzySearchTrainingByName(String name, int size, int offset) throws ElasticSearchUnavailableException, JsonParseException, JsonMappingException, IOException {
    Client client = clientFactory.getClient(configService.getConfig().getElasticSearchIp(), configService
            .getConfig().getElasticSearchPort());
    return ElasticSearch.fuzzySearchDocument(client, "trainings", "training", "name", name, size, offset);
}

private static ArrayList<Training> fuzzySearchDocument(Client client, String index, String type, String field, String value, int size, int offset) throws JsonParseException, JsonMappingException, IOException {
    QueryBuilder query = fuzzyQuery(field, value);

    SearchResponse response = client.prepareSearch(index).setTypes(type)
            .setQuery(query).setSize(size).setFrom(offset).execute().actionGet();

    SearchHits hits = response.getHits();

    TrainingToCreate source = null;
    ObjectMapper mapper = new ObjectMapper();
    ArrayList<Training> trainings = new ArrayList<Training>();

    for (SearchHit searchHit : hits) {
        source = mapper.readValue(searchHit.getSourceAsString(), TrainingToCreate.class);
        trainings.add(TrainingFactory.getTraining(searchHit.getId(), source));
    }
    return trainings;

}

我正在使用 Elastic 1.7.0 使用 Java 8 有人重新考虑问题的位置吗？如果有人需要更多信息，请随时询问。

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1 回答 1

0

Elasticsearch 是接近实时的，这意味着在您索引文档的那一刻和它可搜索的那一刻之间存在一些延迟（默认为 1 秒）。您可以通过在运行查询之前简单地刷新索引来克服这个问题。

因此，我会在您为示例文档编制索引后立即执行此操作...

public void nameSearchTest() throws ElasticSearchUnavailableException, IOException{
    String nameToSearch = "fuzzyText";
    TrainingToCreate t = new TrainingToCreate();
    t.setName(nameToSearch);
    //Create two Trainings to find sth
    String id1 = ElasticIndexer.index(t);
    String id2 = ElasticIndexer.index(t);

    // REFRESH YOUR INDICES (just after indexing)
    client().admin().indices().prepareRefresh().execute().actionGet();

...或者只是在开始时fuzzySearchDocument

 private static ArrayList<Training> fuzzySearchDocument(Client client, String index, String type, String field, String value, int size, int offset) throws JsonParseException, JsonMappingException, IOException {
     // REFRESH YOUR INDICES (just before searching)
     client().admin().indices().prepareRefresh().execute().actionGet();

     QueryBuilder query = fuzzyQuery(field, value);
     ...

如果您在示例文档上运行多个测试用例，我会选择第一个选项，否则任何选项都可以。

于 2015-10-01T02:46:14.373 回答