Question

我是MongoDB的新手，我在将JSON格式的文档存储到我的数据库时遇到了一些麻烦。我为我的应用程序提供了一个测试套件，但由于我的文档格式化（我假设），我无法通过一个特定的测试。任何帮助将不胜感激。

提前致谢，顺

这是一直失败的断言：

java.lang.AssertionError: 
Expected :{ "log_set" : ["SCHEDULED", "STREAMING", "CANCELED", "FINISHED"] }
Actual   :Document{{log_set=[SCHEDULED, STREAMING, CANCELED, FINISHED]}}

以下是我插入数据的代码：

@Override
public void loadData() throws Exception {
    MongoClient mongoClient = new MongoClient( "localhost" , 27017 );
    MongoDatabase database = mongoClient.getDatabase("dst");
    MongoCollection<Document> collection = database.getCollection("EventData");

    em.getTransaction().begin();
    Query query = em.createNamedQuery(Constants.Q_ALLFINISHEDEVENTS);
    List<EventImpl> finishedEvents= query.getResultList();
    em.getTransaction().commit();

    for(int i=0; i<finishedEvents.size(); i++){
        Document toInsert = new Document("event_id",finishedEvents.get(i).getId());
        toInsert.append(Constants.PROP_EVENTFINISHED,finishedEvents.get(i).getEventStreaming().getEnd().getTime());
        toInsert.append(mongoTestData.getDataDescription(finishedEvents.get(i).getId()),mongoTestData.getData(finishedEvents.get(i).getId()));

        System.out.println("DATE ENDED: "+finishedEvents.get(i).getEventStreaming().getEnd().getTime());

        toInsert.append(Constants.PROP_EVENTFINISHED,finishedEvents.get(i).getEventStreaming().getEnd().getTime());

        System.out.println("DOCUMENT TO INSERT:"+toInsert.toString());
        System.out.println("DOCUMENT JSON: " +toInsert.toJson());
        //collection.insertOne(toInsert);
        BasicDBObject dbObject = (BasicDBObject) JSON.parse(toInsert.toJson());
        collection.insertOne(new Document(dbObject));
    }
}

编辑：添加了测试和测试数据：

这是测试代码：

@Test
    public void testMongoDataLoader() throws Exception {
        MongoCollection<Document> collection = db.getCollection(Constants.COLL_EVENTDATA);
        Map<Long, Document> docs = idMap(collection, d -> d.getLong(Constants.I_EVENT));
        List<IEvent> list = daoFactory.getEventDAO().findAll();

        assertFalse(list.isEmpty());
        assertEquals(list.size(), docs.size());

        for (IEvent relObj : list) {
            assertTrue(docs.containsKey(relObj.getId()));
            assertDataEquals(docs.get(relObj.getId()), relObj);
        }
    }
protected void assertDataEquals(Document document, IEvent relObj) {
        MongoTestData mongoTestData = new MongoTestData();

        assertEquals(
                document.getLong(Constants.PROP_EVENTFINISHED).longValue(),
                relObj.getEventStreaming().getEnd().getTime()
        );
        assertEquals(
                document.get(mongoTestData.getDataDescription(relObj.getId())),
                Document.parse(mongoTestData.getData(relObj.getId()))
        );
    }

这是MongoTestData：

public class MongoTestData {
    public static final String DATA_DESC_LOGS = "logs";
    public static final String DATA_DESC_MATRIX = "matrix";
    public static final String DATA_DESC_BLOCK = "alignment_block";

    private ArrayList<String> testData = new ArrayList<>();
    private ArrayList<String> testDataDesc = new ArrayList<>();

    public MongoTestData() {
        String s1 = "{ \"log_set\" : [\"SCHEDULED\", \"STREAMING\", \"CANCELED\", \"FINISHED\"] }";
        String s2 = "{ \"matrix_data\" : [[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]}";
        String s3 = "{ \"alignment_nr\" : 0, \"primary\" : { "
                + " \"chromosome\" : \"chr11\", \"start\" : 3001012, \"end\" : 3001075 }, \"align\" : { "
                + " \"chromosome\" : \"chr13\", \"start\" : 70568380, \"end\" : 70568443 }, \"blastz\" : 3500, "
                + "seq : [\"TCAGCTCATAAATCACCTCCTGCCACAAGCCTGGCCTGGTCCCAGGAGAGTGTCCAGGCTCAGA\", "
                + "\"TCTGTTCATAAACCACCTGCCATGACAAGCCTGGCCTGTTCCCAAGACAATGTCCAGGCTCAGA\"] }";

        testData.add(s1);
        testData.add(s2);
        testData.add(s3);

        testDataDesc.add(DATA_DESC_LOGS);
        testDataDesc.add(DATA_DESC_MATRIX);
        testDataDesc.add(DATA_DESC_BLOCK);
    }

    public String getData(Long eventId) {
        return testData.get(eventId.intValue() % 3);
    }

    public String getDataDescription(Long eventId) {
        return testDataDesc.get(eventId.intValue() % 3);
    }
}

Answer 1

更改插入代码以将数据插入Document（键值对）而不是原始json字符串。

将for loop代码更新为以下内容。请注意使用Document.parse

for(int i=0; i<finishedEvents.size(); i++){
      Document toInsert = new Document("event_id", finishedEvents.get(i).getId());
      toInsert.append(Constants.PROP_EVENTFINISHED, finishedEvents.get(i).getEventStreaming().getEnd().getTime());
      toInsert.append(mongoTestData.getDataDescription(finishedEvents.get(i).getId()), Document.parse(mongoTestData.getData(finishedEvents.get(i).getId())));
      collection.insertOne(toInsert);
 }

Answer 2

您的测试工具似乎期待JSON，但它正在获取Document实例。由于这两者并不严格相等，因此比较失败。所以我说这可能是您的测试工具或您如何使用它的问题。

MongoDB JSON文档格式

2 个答案: