前言

最近接到一個需求，要做MongoDB打點數據的統計，在學習過MongoDB的操作之后，封裝了一個MongoDB的操作類，分為兩部分，基本思想是參照了自己寫過的mysql的操作類。一個是基本的操作類，包括所有基本操作的靜態方法，還有一個是mongoobject，就是具體操作的實現類。

以后再寫如何用spring boot寫一個簡單的統計服務。

MongoDB操作類封裝

mongobase代碼如下：

package com.fun.mongodb;
 
import com.fun.frame.SourceCode;
import com.mongodb.MongoClient;
import com.mongodb.MongoClientURI;
import com.mongodb.MongoCredential;
import com.mongodb.ServerAddress;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import org.bson.Document;
 
import java.util.Arrays;
import java.util.List;
 
/**
 * mongo操作類的基礎類
 */
public class MongoBase extends SourceCode {
 
 /**
  * 獲取服務地址list
  *
  * @param addresses
  * @return
  */
 public static List<ServerAddress> getServers(ServerAddress... addresses) {
  return Arrays.asList(addresses);
 }
 
 /**
  * 獲取服務地址
  *
  * @param host
  * @param port
  * @return
  */
 public static ServerAddress getServerAdress(String host, int port) {
  return new ServerAddress(host, port);
 }
 
 /**
  * 獲取認證list
  *
  * @param credentials
  * @return
  */
 public static List<MongoCredential> getCredentials(MongoCredential... credentials) {
  return Arrays.asList(credentials);
 }
 
 /**
  * 獲取驗證
  *
  * @param userName
  * @param database
  * @param password
  * @return
  */
 public static MongoCredential getMongoCredential(String userName, String database, String password) {
  return MongoCredential.createCredential(userName, database, password.toCharArray());
 }
 
 /**
  * 獲取mongo客戶端
  *
  * @param addresses
  * @param credentials
  * @return
  */
 public static MongoClient getMongoClient(List<ServerAddress> addresses, List<MongoCredential> credentials) {
  return new MongoClient(addresses, credentials);
 }
 
 /**
  * 連接mongo數據庫
  *
  * @param mongoClient
  * @param databaseName
  * @return
  */
 public static MongoDatabase getMongoDatabase(MongoClient mongoClient, String databaseName) {
  return mongoClient.getDatabase(databaseName);
 }
 
 /**
  * 連接mongo集
  *
  * @param mongoDatabase
  * @param collectionName
  * @return
  */
 public static MongoCollection<Document> getMongoCollection(MongoDatabase mongoDatabase, String collectionName) {
  return mongoDatabase.getCollection(collectionName);
 }
 
 /**
  * 關閉數據庫連接
  *
  * @param mongoClient
  */
 public static void MongoOver(MongoClient mongoClient) {
  mongoClient.close();
 }
 
 /**
  * 獲取mongo客戶端對象，通過servers和credentials對象創建
  *
  * @param mongoObject
  * @return
  */
 public static MongoClient getMongoClient(MongoObject mongoObject) {
  MongoClient mongoClient = new MongoClient(getServers(getServerAdress(mongoObject.host, mongoObject.port)), getCredentials(getMongoCredential(mongoObject.user, mongoObject.database, mongoObject.password)));
  return mongoClient;
 }
 
 /**
  * 獲取mongo客戶端對象,通過uri方式連接
  *
  * @param mongoObject
  * @return
  */
 public static MongoClient getMongoClientOnline(MongoObject mongoObject) {
  String format = String.format("mongodb://%s:%s@%s:%d/%s", mongoObject.user, mongoObject.password, mongoObject.host, mongoObject.port, mongoObject.database);
  return new MongoClient(new MongoClientURI(format));
 }
 
 /**
  * 獲取collection對象
  *
  * @param mongoObject
  * @return
  */
 public static MongoCollection<Document> getCollection(MongoObject mongoObject, String collectionName) {
  return getMongoClient(mongoObject).getDatabase(mongoObject.database).getCollection(collectionName);
 }
 
 /**
  * 獲取collection對象
  *
  * @param mongoObject
  * @return
  */
 public static MongoCollection<Document> getCollectionOnline(MongoObject mongoObject, String collectionName) {
  return getMongoClientOnline(mongoObject).getDatabase(mongoObject.database).getCollection(collectionName);
 }
 
}