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：
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 List getServers(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 MongoCollection getMongoCollection(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");
MongoCollection app = 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。
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