MongoDB Java增删改
MongoDB官方文档Reference:http://mongodb.github.io/mongo-java-driver/3.6/API:http://mongodb.github.io/mongo-java-driver/3.6/javadoc/其它教程:http://www.runoob.com/mongodb/mongodb-java.html1)依赖...
MongoDB官方文档
Reference:http://mongodb.github.io/mongo-java-driver/3.6/
API:http://mongodb.github.io/mongo-java-driver/3.6/javadoc/
其它教程:
http://www.runoob.com/mongodb/mongodb-java.html
1)依赖
a. MongoDB maven:
<!-- MongoDB -->
<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId>
<version>3.6.3</version>
</dependency>
b. 下载jar:http://mongodb.github.io/mongo-java-driver
2)demo:
package com.live.test.db.mongodb.example;
import java.util.ArrayList;
import java.util.List;
import org.bson.Document;
import com.mongodb.MongoClient;
import com.mongodb.MongoCredential;
import com.mongodb.ServerAddress;
import com.mongodb.client.FindIterable;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoCursor;
import com.mongodb.client.MongoDatabase;
import com.mongodb.client.model.Filters;
/**
*
* @author live
*/
public class MongoDBDemo {
/**
* 连接MongoDB -> db -> collention ->document
* @param args
*/
public static void main(String[] args) {
String mongoIP = "192.168.1.52";
int mongoPort = 27017;
// 1)Connect to MongoDB
// 如果 Mongo 不需要密码
// MongoClient mongoClient = new MongoClient();
// MongoClient mongoClient = new MongoClient("127.0.0.1");//指定host
// MongoClient mongoClient = new MongoClient("127.0.0.1",27017);//指定host和port
// MongoClient mongoClient = new MongoClient(new MongoClientURI("mongodb://127.0.0.1:27017"));
// 如果 Mongo 需要验证用户名及密码
MongoCredential credential = MongoCredential.createScramSha1Credential("xx", "xx", "xx".toCharArray());//三个参数分别为 用户名 数据库名称 密码
List<MongoCredential> credentialsList = new ArrayList<MongoCredential>();
credentialsList.add(credential);
//连接到MongoDB服务 如果是远程连接可以替换“localhost”为服务器所在IP地址
//ServerAddress()两个参数分别为 服务器地址 和 端口
ServerAddress serverAddress = new ServerAddress(mongoIP,mongoPort);
List<ServerAddress> addrs = new ArrayList<ServerAddress>();
addrs.add(serverAddress);
MongoClient mongoClient = new MongoClient(addrs, credentialsList);
System.out.println("mongoClient:" + mongoClient);
// 2)Databases and Collections
// 2.1)Access a Database
MongoDatabase db = mongoClient.getDatabase("spIm");//MongoDatabase instances are immutable.
System.out.println("db:" +db);
for (String name : db.listCollectionNames()) {
System.out.println("\t"+name);
}
// 2.2)Access a Collection
// 创建集合
// db.createCollection("test1");
System.out.println("集合创建成功");
// use集合
MongoCollection<Document> collection = db.getCollection("talk");
System.out.println("use集合:" + collection);
// 增,文档
Document document = new Document("title", "MongoDB").
append("公司电话?", "010-123456").
append("code", 100);
collection.insertOne(document);
//db.talk.insert("公司电话多少啊", "010-123456");
System.out.println("插入一条文档:" + document.toJson());
// 改,文档
// updateMay()是更新全部
// updateOne()只更新匹配到的第一条
collection.updateMany(Filters.eq("code", 100), new Document("$set",new Document("code",200)));
// 删,文档
// deleteOne():除符合条件的第一个文档
collection.deleteOne(Filters.eq("code", 200));
// deleteMany():删除所有符合条件的文档
collection.deleteMany (Filters.eq("code", 200));
// 检索所有文档
// db.talk.find();
/**
* 1. 获取迭代器FindIterable<Document>
* 2. 获取游标MongoCursor<Document>
* 3. 通过游标遍历检索出的文档集合
* */
FindIterable<Document> findIterable = collection.find();
MongoCursor<Document> mongoCursor = findIterable.iterator();
System.out.println("查询");
while(mongoCursor.hasNext()){
System.out.println(mongoCursor.next());
}
}
}
*代码地址
github:https://github.com/sunxiaoning90/com_live_test/tree/master/com_live_test_db/com_live_test_db_mongodb
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