MongoDB Quick Start Learning Note 8 MongoDB Java driver operation

Importjava.util.ArrayList;Importjava.util.List;ImportJava.util.regex.Pattern;Importorg.bson.Document;Importcom.mongodb.MongoClient;Importcom.mongodb.MongoCredential;Importcom.mongodb.ServerAddress;Importcom.mongodb.client.FindIterable;Importcom.mongodb.client.MongoCollection;ImportCom.mongodb.client.MongoCursor;Importcom.mongodb.client.MongoDatabase; Public classMongozyh { Public Static voidMain (string[] args) {Try {            //Connect to a MongoDB service, serveraddress () two parameters for server address and port, respectivelyServerAddress serveraddress =NewServerAddress ("localhost", 27017); List<ServerAddress> Addrs =NewArraylist<serveraddress>();            Addrs.add (serveraddress); //three parameters for user name database name passwordMongocredential credential =mongocredential. Createscramsha1credential ("Zyh", "admin",                            "Zyh". ToCharArray ()); List<MongoCredential> credentials =NewArraylist<mongocredential>();            Credentials.add (credential); //obtaining MongoDB connections through connection authenticationMongoclient mongoclient =Newmongoclient (Addrs, credentials); //connecting to a databaseMongodatabase mongodatabase = mongoclient.getdatabase ("Zyhdb"); //Creates a new collection and creates a new empty collection in the database after execution//mongodatabase.createcollection ("student"); //System.out.println ("new collection succeeded"); //gets the collection and inserts data into the collectionMongocollection<document> mongocollection =mongodatabase. GetCollection ("Student"); //Insert a piece of data//Document document = new document (); //document.append ("name", "Zhangsan"); //document.append ("Age", 28); //Mongocollection.insertone (document); //System.out.println ("Insert a piece of data successfully"); //inserting more than one data//list<document> documentlist = new arraylist<document> (); //Document Document1 = new document (); //document1.append ("name", "Lisi"); //document1.append ("Age", 28); //document1.append ("Sex", "male"); //Document Document2 = new document (); //document2.append ("name", "Wangwu"); //document2.append ("Age", 31); //document2.append ("Sex", "male"); //Documentlist.add (Document1); //Documentlist.add (Document2); //Mongocollection.insertmany (documentlist); //System.out.println ("Insert multiple data Success"); //Querying Data//querying all the data in a collection//finditerable<document> finditerable = Mongocollection.find (); //mongocursor<document> mongocursor = Finditerable.iterator (); //While (Mongocursor.hasnext ()) {//System.out.println (Mongocursor.next ()); // }            //Query by Condition//Document query = new document (); //query.put ("Age", New Document ("$lt", 30)); //query.put ("Sex", "male"); //query.put ("name", query); //Regular Expression Query//Pattern pattern = pattern.compile ("^zhang"); //query.put ("name", pattern); //Sort//Document sort = new document (); //sort.put ("name",-1);//1 is the positive sequence,-1 is reverse//finditerable<document> finditerable = mongocollection.find (query)//. Sort (sort); //mongocursor<document> mongocursor = Finditerable.iterator (); //While (Mongocursor.hasnext ()) {//Document doc = Mongocursor.next (); //System.out.print ("Name:" + doc.get ("name") + "..."); //System.out.print ("Age:" + doc.get ("age") + "..."); //System.out.println ("Sex:" + doc.get ("sex") + "..."); // }            //mongocollection.findoneandupdate (query condition, modify content);//query out the first data and modify//mongocollection.findoneanddelete (query conditions);//query out the first data and delete//mongocollection.findoneandreplace (query condition, replace content);//query out the first data and replace//Modifying Data//Document query = new document (); //query.put ("Age", 28); //Document update = new document (); //Document D = new document (); //d.put ("Birthday", New Date ()); //d.put ("name", "Zhangsan"); //update.put ("$set", D); //mongocollection.updateone (query, update);//Modify the first piece of data to be queried//mongocollection.updatemany (query condition, modify content);//Modify all the data that is queried//Delete Data//Document query = new document (); //query.put ("Age", 28); //mongocollection.deleteone (query);//Delete the first piece of data to the query//mongocollection.deletemany (query conditions);//Delete all data that is queried//Mongocollection.drop ();//Delete Collection        } Catch(Exception e) {e.printstacktrace (); }    }}

MongoDB Quick Start Learning Note 8 MongoDB Java driver operation