mongodb3.4-java

Dear 丶 2022-09-27 04:52 128阅读 0赞

import com.mongodb.MongoClient;  
import com.mongodb.MongoClientOptions;  
import com.mongodb.MongoCredential;  
import com.mongodb.ServerAddress;  
import com.mongodb.client.MongoDatabase;  
import com.mongodb.client.MongoCollection;

import org.bson.Document;

import java.util.Arrays;

import com.mongodb.Block;  
import com.mongodb.client.MongoCursor;

import static com.mongodb.client.model.Filters.\*;

import com.mongodb.client.result.DeleteResult;

import static com.mongodb.client.model.Updates.\*;

import com.mongodb.client.result.UpdateResult;

import java.util.ArrayList;  
import java.util.List;

//[http://mongodb.github.io/mongo-java-driver/3.4/driver/getting-started/quick-start/][http_mongodb.github.io_mongo-java-driver_3.4_driver_getting-started_quick-start]  
public class MongoTest \{  
public static void main(String\[\] args) \{  
/\*MongoClient mongoClient = new MongoClient( “localhost” );  
MongoClient mongoClient = new MongoClient( “localhost” , 27017 );  
MongoClientURI connectionString = new MongoClientURI(“mongodb://localhost:27017”);  
MongoClient mongoClient = new MongoClient(connectionString);  
\*/  
// MongoClient mongoClient = new MongoClient();

// 连接副本集
        /*MongoClient mongoClient = new MongoClient(new MongoClientURI(
                "mongodb://host1:27017,host2:27017,host3:27017"));
        MongoClient mongoClient = new MongoClient(
                new MongoClientURI(
                  "mongodb://host1:27017,host2:27017,host3:27017/?replicaSet=myReplicaSet"));
        MongoClient mongoClient = new MongoClient(
                Arrays.asList(new ServerAddress("host1", 27017),
                              new ServerAddress("host2", 27017),
                              new ServerAddress("host3", 27017)));*/
        // 连接分片
        /*  MongoClient mongoClient = new MongoClient( "localhost" , 27017 );
        MongoClient mongoClient = new MongoClient(new MongoClientURI("mongodb://localhost:27017"));
        MongoClient mongoClient = new MongoClient(
                   new MongoClientURI("mongodb://host1:27017,host2:27017"));
        MongoClient mongoClient = new MongoClient(
                   Arrays.asList(new ServerAddress("host1", 27017),
                                 new ServerAddress("host2", 27017)));*/
    
        // 连接设置
        // TLS/SSL认证方式1
        /*MongoClientURI uri = new MongoClientURI(
                "mongodb://user1:pwd1@host1/?authSource=db1&ssl=true");
        MongoClient mongoClient = new MongoClient(uri);*/
    
        // 方式2
        MongoCredential credential = MongoCredential.createCredential("user",
                "database", "password".toCharArray());
        MongoClientOptions options = MongoClientOptions.builder()
                .sslEnabled(true).build();
        MongoClient mongoClient = new MongoClient(new ServerAddress("host1",
                27017), Arrays.asList(credential), options);
    
    
    
        MongoDatabase database = mongoClient.getDatabase("mydb");
        MongoCollection<Document> collection = database.getCollection("test");
    
        // 创建document
        Document doc = new Document("name", "MongoDB")
                .append("type", "database").append("count", 1)
                .append("versions", Arrays.asList("v3.2", "v3.0", "v2.6"))
                .append("info", new Document("x", 203).append("y", 102));
        collection.insertOne(doc);
    
        // 插入多个文档
        List<Document> documents = new ArrayList<Document>();
        for (int i = 0; i < 100; i++) {
            documents.add(new Document("i", i));
        }
        collection.insertMany(documents);
    
        System.out.println(collection.count());
    
        // 获取第一个文档
        Document myDoc = collection.find().first();
        System.out.println(myDoc.toJson());
    
        // 使用迭代器迭代所有文档
        MongoCursor<Document> cursor = collection.find().iterator();
        try {
            while (cursor.hasNext()) {
                System.out.println(cursor.next().toJson());
            }
        } finally {
            cursor.close();
        }
        for (Document cur : collection.find()) {
            System.out.println(cur.toJson());
        }
    
        // 指定查询
        myDoc = collection.find(eq("i", 71)).first();
        System.out.println(myDoc.toJson());
    
        // 获取与文档匹配的所有文档 i > 50
        Block<Document> printBlock = new Block<Document>() {
            @Override
            public void apply(final Document document) {
                System.out.println(document.toJson());
            }
        };
        collection.find(gt("i", 50)).forEach(printBlock);
        // 指定范围50<i<=100
        collection.find(and(gt("i", 50), lte("i", 100))).forEach(printBlock);
    
        // i=10的文档i设置为110
        collection.updateOne(eq("i", 10), new Document("$set", new Document(
                "i", 110)));
        // i<100所有文档增100
        UpdateResult updateResult = collection.updateMany(lt("i", 100),
                inc("i", 100));
        System.out.println(updateResult.getModifiedCount());
    
        collection.deleteOne(eq("i", 110));
        DeleteResult deleteResult = collection.deleteMany(gte("i", 100));
        System.out.println(deleteResult.getDeletedCount());
    
        // 创建索引,升序1，降序-1
        collection.createIndex(new Document("i", 1).append("name", 1));
    
        mongoClient.close();
    }

[http_mongodb.github.io_mongo-java-driver_3.4_driver_getting-started_quick-start]: http://mongodb.github.io/mongo-java-driver/3.4/driver/getting-started/quick-start/