Java MongoDB 插入

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本文介绍3中插入文档的方法。

1. 使用Document插入文档

Document document = new Document();document.put("database", "test");document.put("table", "hosting");Document documentDetail = new Document();documentDetail.put("records", 99);documentDetail.put("index", "vps_index1");documentDetail.put("active", "true");document.put("detail", documentDetail);collection.insertOne(document);

2. 使用Map插入文档

Map<String, Object> documentMap = new HashMap<String, Object>();documentMap.put("database", "test");documentMap.put("table", "hosting");Map<String, Object> documentMapDetail = new HashMap<String, Object>();documentMapDetail.put("records", 99);documentMapDetail.put("index", "vps_index1");documentMapDetail.put("active", "true");documentMap.put("detail", documentMapDetail);collection.insertOne(new Document(documentMap));

3. 使用JSON插入文档

String json = "{\"database\":\"test\", \"table\":\"hosting\", \"detail\":{\"records\":99, \"index\":\"vps_index1\", \"active\":\"true\"}}";Document d = Document.parse(json);collection.insertOne(d);

完整实例

import com.mongodb.MongoClient;import com.mongodb.client.FindIterable;import com.mongodb.client.MongoCollection;import com.mongodb.client.MongoCursor;import com.mongodb.client.MongoDatabase;import org.bson.Document;import java.util.HashMap;import java.util.Map;public class InsertDocument {    public static void main(String[] args) {        MongoClient mongoClient = new MongoClient("localhost", 27017);        MongoDatabase database = mongoClient.getDatabase("test");        MongoCollection<Document> collection = database.getCollection("coll");        Document document = new Document();        document.put("database", "test");        document.put("table", "hosting");        Document documentDetail = new Document();        documentDetail.put("records", 99);        documentDetail.put("index", "vps_index1");        documentDetail.put("active", "true");        document.put("detail", documentDetail);        collection.insertOne(document);        Map<String, Object> documentMap = new HashMap<String, Object>();        documentMap.put("database", "test");        documentMap.put("table", "hosting");        Map<String, Object> documentMapDetail = new HashMap<String, Object>();        documentMapDetail.put("records", 99);        documentMapDetail.put("index", "vps_index1");        documentMapDetail.put("active", "true");        documentMap.put("detail", documentMapDetail);        collection.insertOne(new Document(documentMap));        String json = "{\"database\":\"test\", \"table\":\"hosting\", \"detail\":{\"records\":99, \"index\":\"vps_index1\", \"active\":\"true\"}}";        Document d = Document.parse(json);        collection.insertOne(d);        FindIterable<Document> documents = collection.find();        MongoCursor<Document> mongoCursor = documents.iterator();        while (mongoCursor.hasNext()) {            System.out.println(mongoCursor.next());        }    }}

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