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本篇文章给大家分享的是有关MongoDB中怎么封装一个操作类,小编觉得挺实用的,因此分享给大家学习,希望大家阅读完这篇文章后可以有所收获,话不多说,跟着小编一起来看看吧。
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MongoDB操作类封装
mongobase代码如下:
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操作类的基础类 */ public class MongoBase extends SourceCode { /** * 获取服务地址list * * @param addresses * @return */ public static ListgetServers(ServerAddress... addresses) { return Arrays.asList(addresses); } /** * 获取服务地址 * * @param host * @param port * @return */ public static ServerAddress getServerAdress(String host, int port) { return new ServerAddress(host, port); } /** * 获取认证list * * @param credentials * @return */ public static List getCredentials(MongoCredential... credentials) { return Arrays.asList(credentials); } /** * 获取验证 * * @param userName * @param database * @param password * @return */ public static MongoCredential getMongoCredential(String userName, String database, String password) { return MongoCredential.createCredential(userName, database, password.toCharArray()); } /** * 获取mongo客户端 * * @param addresses * @param credentials * @return */ public static MongoClient getMongoClient(List addresses, List credentials) { return new MongoClient(addresses, credentials); } /** * 连接mongo数据库 * * @param mongoClient * @param databaseName * @return */ public static MongoDatabase getMongoDatabase(MongoClient mongoClient, String databaseName) { return mongoClient.getDatabase(databaseName); } /** * 连接mongo集 * * @param mongoDatabase * @param collectionName * @return */ public static MongoCollection getMongoCollection(MongoDatabase mongoDatabase, String collectionName) { return mongoDatabase.getCollection(collectionName); } /** * 关闭数据库连接 * * @param mongoClient */ public static void MongoOver(MongoClient mongoClient) { mongoClient.close(); } /** * 获取mongo客户端对象,通过servers和credentials对象创建 * * @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; } /** * 获取mongo客户端对象,通过uri方式连接 * * @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)); } /** * 获取collection对象 * * @param mongoObject * @return */ public static MongoCollection getCollection(MongoObject mongoObject, String collectionName) { return getMongoClient(mongoObject).getDatabase(mongoObject.database).getCollection(collectionName); } /** * 获取collection对象 * * @param mongoObject * @return */ public static MongoCollection getCollectionOnline(MongoObject mongoObject, String collectionName) { return getMongoClientOnline(mongoObject).getDatabase(mongoObject.database).getCollection(collectionName); } }
mongoobject的代码如下:
package com.fun.mongodb; import com.mongodb.MongoClient; import com.mongodb.client.MongoCollection; import org.bson.Document; /** * mongo数据库配置对象,针对单个数据服务,单个身份验证 */ public class MongoObject extends MongoBase { String host; int port; String user; String password; String database; MongoClient mongoClient; /** * 创建数据连接 * * @param host * @param port * @param user * @param password * @param database */ public MongoObject(String host, int port, String user, String password, String database) { this.host = host; this.port = port; this.user = user; this.password = password; this.database = database; this.mongoClient = getMongoClient(this); } /** * 创建数据库连接 * * @param port * @param host * @param user * @param password * @param database */ public MongoObject(int port, String host, String user, String password, String database) { this.host = host; this.port = port; this.user = user; this.password = password; this.database = database; this.mongoClient = getMongoClientOnline(this); } /** * 获取colletion对象 * * @param collectionName * @return */ public MongoCollectiongetMongoCollection(String collectionName) { MongoClient mongoClientOnline = getMongoClientOnline(this); return mongoClientOnline.getDatabase(database).getCollection(collectionName); } /** * 关闭连接 */ public void over() { MongoOver(this.mongoClient); } } @Override public MongoObject clone() { return new MongoObject(this.host, this.port, this.user, this.password, this.database); } public MongoObject clone2() { return new MongoObject(this.port, this.host, this.user, this.password, this.database); }
具体效果非常不错,测试代码如下:
public static void main(String[] args) { MongoObject ready = new MongoObject("*****", 5117, "fission_record", "fission_record", "fission_record"); MongoCollectionapp = ready.getMongoCollection("app_logs_20181109"); Document first = app.find().first(); output(first); ready.over(); }
打印内容如下:
Document{{_id=5be4ce052ce01b21b6c26a64, _class=com.fission.next.record.bean.AppRecordBean, user_id=5482, action_type={"gameId":2,"userId":"5482"}, action_extern=DataSta_Game_Starts, client_version=15, client_ip=114.5.146.239, client_imei=UNKNOWN, client_dev=xiaomi-Redmi 5 Plus, client_type=200, server_time=1541721601655, os_name=200, os_version=15, client_time=1541721577025}}
以上就是MongoDB中怎么封装一个操作类,小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注创新互联行业资讯频道。