Anarkh的知识库

主题

本文为低优先级，只是向你介绍下MongoDB提供的原生的JavaAPI；而大多数公司使用Spring框架，会使用Spring Data对MongoDB原生API的封装，比如JPA，MongoTemplate等。@anarkh

  • Mongo入门 - 基本使用：Java API
  • MongoDB Driver
  • 代码测试

MongoDB Driver ​

xml
<dependency>
    <groupId>org.mongodb</groupId>
    <artifactId>mongo-java-driver</artifactId>
    <version>3.12.6</version>
</dependency>

代码测试 ​

例子请参考 mongo-java-driver 例子在新窗口打开

java
private static final String MONGO_HOST = "xxx.xxx.xxx.xxx";

    private static final Integer MONGO_PORT = 27017;

    private static final String MONGO_DB = "testdb";


    public static void main(String args[]) {
        try {
            
            MongoClient mongoClient = new MongoClient(MONGO_HOST, MONGO_PORT);

            
            MongoDatabase mongoDatabase = mongoClient.getDatabase(MONGO_DB);
            System.out.println("Connect to database successfully");

            
            mongoDatabase.createCollection("test");
            System.out.println("create collection");

            
            MongoCollection&lt;Document&gt; collection = mongoDatabase.getCollection("test");

            
            Document doc = new Document("name", "MongoDB")
                    .append("type", "database")
                    .append("count", 1)
                    .append("info", new Document("x", 203).append("y", 102));
            collection.insertOne(doc);

            
            System.out.println(collection.countDocuments());

            
            Document myDoc = collection.find().first();
            System.out.println(myDoc.toJson());

            
            MongoCursor&lt;Document&gt; cursor = collection.find().iterator();
            try {
                while (cursor.hasNext()) {
                    System.out.println(cursor.next().toJson());
                }
            } finally {
                cursor.close();
            }

        } catch (Exception e) {
            System.err.println(e.getClass().getName() + ": " + e.getMessage());
        }
    }