MongoDB Basic Use

MongoDB is a document-type NoSQL database, the official website downloads the address https://www.mongodb.com/download

Linux version of the 64-bit my virtual machine is 32-bit, I am under the Windows version, but the operation is similar.

The download is ready to install next.

Create a database path after installation

CMD Run MongoDB service side

D:\software\mongodbserver\bin/mongod.exe--dbpath D:\software/mongodbdata #服务端

Then start a CMD window to run the client

D:\software\mongodbserver\bin/mongo #客户端

Create DB use
dbxx

Query all DB show
DBS

Delete db use
Runoob
db.dropdatabase ()

Insert Document
Db.col.insert ({title: ' Test ', 
    Description: ' MongoDB is a Nosql database ', by
    : ' Test ',
    URL: ' http:// Www.test.com ',
    Tags: [' mongodb ', ' database ', ' NoSQL '],
    likes:200
})

View the document
Db.col.find ();

Java API Operations MongoDB database

Need a mongo-java-driver jar if you are maven into this address http://mongodb.github.io/mongo-java-driver/

Package com.zit.test;
Import java.util.ArrayList;

Import java.util.List;

Import org.bson.Document;
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 Com.mongodb.client.model.Filters; public class Mongodbutils {/** * <p> method Description: Establish connection </p>/public static mongodatabase Getmongodbconnecti
		        On () {try{//Connect to MongoDB service mongoclient mongoclient = new Mongoclient ("127.0.0.1", 27017);  
		       Connect to database Mongodatabase Mongodatabase = mongoclient.getdatabase ("Zzqtest");
		       System.out.println ("Connect to Database successfully");
		      return mongodatabase;
		        }catch (Exception e) {System.err.println (E.getclass (). GetName () + ":" + e.getmessage ());
		     return null; }/** * <p> method Description: Creating set </p>/private static void CreateCollection(String CollectionName)
		{getmongodbconnection (). CreateCollection (CollectionName);
	System.out.println ("Collection Creation succeeded"); /** * <p> Method Description: Select Set </p> * * private static Mongocollection selectcollection (String collectionname)
		{mongocollection<document> collection = Getmongodbconnection (). GetCollection (CollectionName);
		System.out.println ("Set selection" +collectionname + "success");
	return collection; /** * <p> Method Description: Insert Document </p> * * private static void Insertdocument (Mongocollection<document> Colle
		 ction) {Document Document2 = new Document ("title", "MongoDB");
         Document document = new Document ("title", "MongoDB").  
         Append ("description", Document2).  
         Append ("likes", 100).  
         Append ("by", "Fly");  
         list<document> documents = new arraylist<document> ();  
         Documents.Add (document);  
         Collection.insertmany (documents);
	SYSTEM.OUT.PRINTLN ("Document insert succeeded"); /** * <p> Method Description: ArticleFile Update </p> * * private static void UpdateDocument (Mongocollection<document> collection) {Collection.updatem  
        Any (Filters.eq ("likes"), New Document ("$set", New document ("likes", 200));
	SYSTEM.OUT.PRINTLN ("document updated successfully"); /** * <p> Method Description: Query document </p>/private static void Selectdocument (mongocollection<document> col  
        lection) {//Retrieve view results finditerable<document> finditerable = Collection.find ();  
        mongocursor<document> mongocursor = Finditerable.iterator ();  
        while (Mongocursor.hasnext ()) {System.out.println (Mongocursor.next ()); }/** * <p> method Description: Delete document </p>/private static void Deletedocument (Mongocollection<document&gt ;  
        Collection) {//delete the first document qualifying Collection.deleteone (Filters.eq ("likes", 100));  
	Delete all eligible documents Collection.deletemany (FILTERS.EQ ("likes", 100)); public static void Main (string[] args) {//creatEcollection ("test");
		Mongocollection<document> collection = selectcollection ("test");
		/*insertdocument (collection); * * UpdateDocument (collection);
		Deletedocument (collection);
	Selectdocument (collection);
 }
	
	
	
}