MongoDB中怎么封装一个操作类

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MongoDB操作类封装

mongobase代码如下：

packagecom.fun.mongodb;

importcom.fun.frame.SourceCode;
importcom.mongodb.MongoClient;
importcom.mongodb.MongoClientURI;
importcom.mongodb.MongoCredential;
importcom.mongodb.ServerAddress;
importcom.mongodb.client.MongoCollection;
importcom.mongodb.client.MongoDatabase;
importorg.bson.Document;

importjava.util.Arrays;
importjava.util.List;

/**
*mongo操作类的基础类
*/
publicclassMongoBaseextendsSourceCode{

/**
*获取服务地址list
*
*@paramaddresses
*@return
*/
publicstaticList<ServerAddress>getServers(ServerAddress...addresses){
returnArrays.asList(addresses);
}

/**
*获取服务地址
*
*@paramhost
*@paramport
*@return
*/
publicstaticServerAddressgetServerAdress(Stringhost,intport){
returnnewServerAddress(host,port);
}

/**
*获取认证list
*
*@paramcredentials
*@return
*/
publicstaticList<MongoCredential>getCredentials(MongoCredential...credentials){
returnArrays.asList(credentials);
}

/**
*获取验证
*
*@paramuserName
*@paramdatabase
*@parampassword
*@return
*/
publicstaticMongoCredentialgetMongoCredential(StringuserName,Stringdatabase,Stringpassword){
returnMongoCredential.createCredential(userName,database,password.toCharArray());
}

/**
*获取mongo客户端
*
*@paramaddresses
*@paramcredentials
*@return
*/
publicstaticMongoClientgetMongoClient(List<ServerAddress>addresses,List<MongoCredential>credentials){
returnnewMongoClient(addresses,credentials);
}

/**
*连接mongo数据库
*
*@parammongoClient
*@paramdatabaseName
*@return
*/
publicstaticMongoDatabasegetMongoDatabase(MongoClientmongoClient,StringdatabaseName){
returnmongoClient.getDatabase(databaseName);
}

/**
*连接mongo集
*
*@parammongoDatabase
*@paramcollectionName
*@return
*/
publicstaticMongoCollection<Document>getMongoCollection(MongoDatabasemongoDatabase,StringcollectionName){
returnmongoDatabase.getCollection(collectionName);
}

/**
*关闭数据库连接
*
*@parammongoClient
*/
publicstaticvoidMongoOver(MongoClientmongoClient){
mongoClient.close();
}

/**
*获取mongo客户端对象，通过servers和credentials对象创建
*
*@parammongoObject
*@return
*/
publicstaticMongoClientgetMongoClient(MongoObjectmongoObject){
MongoClientmongoClient=newMongoClient(getServers(getServerAdress(mongoObject.host,mongoObject.port)),getCredentials(getMongoCredential(mongoObject.user,mongoObject.database,mongoObject.password)));
returnmongoClient;
}

/**
*获取mongo客户端对象,通过uri方式连接
*
*@parammongoObject
*@return
*/
publicstaticMongoClientgetMongoClientOnline(MongoObjectmongoObject){
Stringformat=String.format("mongodb://%s:%s@%s:%d/%s",mongoObject.user,mongoObject.password,mongoObject.host,mongoObject.port,mongoObject.database);
returnnewMongoClient(newMongoClientURI(format));
}

/**
*获取collection对象
*
*@parammongoObject
*@return
*/
publicstaticMongoCollection<Document>getCollection(MongoObjectmongoObject,StringcollectionName){
returngetMongoClient(mongoObject).getDatabase(mongoObject.database).getCollection(collectionName);
}

/**
*获取collection对象
*
*@parammongoObject
*@return
*/
publicstaticMongoCollection<Document>getCollectionOnline(MongoObjectmongoObject,StringcollectionName){
returngetMongoClientOnline(mongoObject).getDatabase(mongoObject.database).getCollection(collectionName);
}

}

mongoobject的代码如下：

packagecom.fun.mongodb;


importcom.mongodb.MongoClient;
importcom.mongodb.client.MongoCollection;
importorg.bson.Document;

/**
*mongo数据库配置对象，针对单个数据服务，单个身份验证
*/
publicclassMongoObjectextendsMongoBase{

Stringhost;

intport;

Stringuser;

Stringpassword;

Stringdatabase;

MongoClientmongoClient;

/**
*创建数据连接
*
*@paramhost
*@paramport
*@paramuser
*@parampassword
*@paramdatabase
*/
publicMongoObject(Stringhost,intport,Stringuser,Stringpassword,Stringdatabase){
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
*
*@paramport
*@paramhost
*@paramuser
*@parampassword
*@paramdatabase
*/
publicMongoObject(intport,Stringhost,Stringuser,Stringpassword,Stringdatabase){
this.host=host;
this.port=port;
this.user=user;
this.password=password;
this.database=database;
this.mongoClient=getMongoClientOnline(this);
}

/**
*获取colletion对象
*
*@paramcollectionName
*@return
*/
publicMongoCollection<Document>getMongoCollection(StringcollectionName){
MongoClientmongoClientOnline=getMongoClientOnline(this);
returnmongoClientOnline.getDatabase(database).getCollection(collectionName);
}


/**
*关闭连接
*/
publicvoidover(){
MongoOver(this.mongoClient);
}
}
@Override
publicMongoObjectclone(){
returnnewMongoObject(this.host,this.port,this.user,this.password,this.database);
}

publicMongoObjectclone2(){
returnnewMongoObject(this.port,this.host,this.user,this.password,this.database);
}

具体效果非常不错，测试代码如下：

publicstaticvoidmain(String[]args){
MongoObjectready=newMongoObject("*****",5117,"fission_record","fission_record","fission_record");
MongoCollection<Document>app=ready.getMongoCollection("app_logs_20181109");
Documentfirst=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。更多详情敬请关注博信行业资讯频道。