java的mongodb操作

12/2/2016 - 6:37 AM

import org.bson.Document;  
import com.mongodb.MongoClient;  
import com.mongodb.MongoCredential;  
import com.mongodb.ServerAddress;  
import com.mongodb.client.MongoCollection;  
import com.mongodb.client.MongoDatabase;  
  
public class MongoDBJDBC {  
    public static void main(String[] args){  
        try {  
            //连接到MongoDB服务 如果是远程连接可以替换“localhost”为服务器所在IP地址  
            //ServerAddress()两个参数分别为 服务器地址 和 端口  
            ServerAddress serverAddress = new ServerAddress("localhost",27017);  
            List<ServerAddress> addrs = new ArrayList<ServerAddress>();  
            addrs.add(serverAddress);  
              
            //MongoCredential.createScramSha1Credential()三个参数分别为 用户名 数据库名称 密码  
            MongoCredential credential = MongoCredential.createScramSha1Credential("username", "databaseName", "password".toCharArray());  
            List<MongoCredential> credentials = new ArrayList<MongoCredential>();  
            credentials.add(credential);  
              
            //通过连接认证获取MongoDB连接  
            MongoClient mongoClient = new MongoClient(addrs,credentials);  
              
            //连接到数据库  
            MongoDatabase mongoDatabase = mongoClient.getDatabase("databaseName");  
            System.out.println("Connect to database successfully");  
              
            //获取集合 参数为“集合名称”  
            MongoCollection<Document> mongoCollection = mongoDatabase.getCollection("collectionName");  
            System.out.println("Collection mycol selected successfully");  
        } catch (Exception e) {  
            System.err.println( e.getClass().getName() + ": " + e.getMessage() );  
        }  
    }  
}

检索所有文档.java

import java.util.ArrayList;  
import java.util.List;  
import org.bson.Document;  
import com.mongodb.MongoClient;  
import com.mongodb.MongoCredential;  
import com.mongodb.ServerAddress;  
import com.mongodb.client.FindIterable;  
import com.mongodb.client.MongoCollection;  
import com.mongodb.client.MongoCursor;  
import com.mongodb.client.MongoDatabase;  
  
public class MongoDBJDBC {  
    public static void main(String[] args){  
        try {  
            //连接到MongoDB服务 如果是远程连接可以替换“localhost”为服务器所在IP地址  
            //ServerAddress()两个参数分别为 服务器地址 和 端口  
            ServerAddress serverAddress = new ServerAddress("localhost",27017);  
            List<ServerAddress> addrs = new ArrayList<ServerAddress>();  
            addrs.add(serverAddress);  
              
            //MongoCredential.createScramSha1Credential()三个参数分别为 用户名 数据库名称 密码  
            MongoCredential credential = MongoCredential.createScramSha1Credential("username", "databaseName", "password".toCharArray());  
            List<MongoCredential> credentials = new ArrayList<MongoCredential>();  
            credentials.add(credential);  
              
            //通过连接认证获取MongoDB连接  
            MongoClient mongoClient = new MongoClient(addrs,credentials);  
              
            //连接到数据库  
            MongoDatabase mongoDatabase = mongoClient.getDatabase("databaseName");  
            System.out.println("Connect to database successfully");  
              
            //获取集合 参数为“集合名称”  
            MongoCollection<Document> mongoCollection = mongoDatabase.getCollection("collectionName");  
            System.out.println("Collection mycol selected successfully");  
              
            //检索所有文档  
            /** 
             * 1. 获取迭代器FindIterable<Document> 
             * 2. 获取游标MongoCursor<Document> 
             * 3. 通过游标遍历检索出的文档集合 
             * */  
            FindIterable<Document> findIterable = mongoCollection.find();  
            MongoCursor<Document> mongoCursor = findIterable.iterator();  
            while(mongoCursor.hasNext()){  
                System.out.println(mongoCursor.next());  
            }  
              
        } catch (Exception e) {  
            System.err.println( e.getClass().getName() + ": " + e.getMessage() );  
        }  
    }  
}

更新文档.java

import java.util.ArrayList;  
import java.util.List;  
import org.bson.Document;  
import com.mongodb.MongoClient;  
import com.mongodb.MongoCredential;  
import com.mongodb.ServerAddress;  
import com.mongodb.client.FindIterable;  
import com.mongodb.client.MongoCollection;  
import com.mongodb.client.MongoCursor;  
import com.mongodb.client.MongoDatabase;  
import com.mongodb.client.model.Filters;  
  
public class MongoDBJDBC {  
    public static void main(String[] args){  
        try {  
            //连接到MongoDB服务 如果是远程连接可以替换“localhost”为服务器所在IP地址  
            //ServerAddress()两个参数分别为 服务器地址 和 端口  
            ServerAddress serverAddress = new ServerAddress("localhost",27017);  
            List<ServerAddress> addrs = new ArrayList<ServerAddress>();  
            addrs.add(serverAddress);  
              
            //MongoCredential.createScramSha1Credential()三个参数分别为 用户名 数据库名称 密码  
            MongoCredential credential = MongoCredential.createScramSha1Credential("userName", "databaseName", "password".toCharArray());  
            List<MongoCredential> credentials = new ArrayList<MongoCredential>();  
            credentials.add(credential);  
              
            //通过连接认证获取MongoDB连接  
            MongoClient mongoClient = new MongoClient(addrs,credentials);  
              
            //连接到数据库  
            MongoDatabase mongoDatabase = mongoClient.getDatabase("databaseName");  
            System.out.println("Connect to database successfully");  
              
            //获取集合 参数为“集合名称”  
            MongoCollection<Document> mongoCollection = mongoDatabase.getCollection("collectionName");  
            System.out.println("Collection mycol selected successfully");  
              
            //更新文档   将文档中likes=100的文档修改为likes=200   
            mongoCollection.updateMany(Filters.eq("likes", 100), new Document("$set",new Document("likes",200)));  
            //检索查看结果  
            FindIterable<Document> findIterable = mongoCollection.find();  
            MongoCursor<Document> mongoCursor = findIterable.iterator();  
            while(mongoCursor.hasNext()){  
                System.out.println(mongoCursor.next());  
            }  
              
        } catch (Exception e) {  
            System.err.println( e.getClass().getName() + ": " + e.getMessage() );  
        }  
    }  
}

插入文档.java

import java.util.ArrayList;  
import java.util.List;  
import org.bson.Document;  
import com.mongodb.MongoClient;  
import com.mongodb.MongoCredential;  
import com.mongodb.ServerAddress;  
import com.mongodb.client.MongoCollection;  
import com.mongodb.client.MongoDatabase;  
  
public class MongoDBJDBC {  
    public static void main(String[] args){  
        try {  
            //连接到MongoDB服务 如果是远程连接可以替换“localhost”为服务器所在IP地址  
            //ServerAddress()两个参数分别为 服务器地址 和 端口  
            ServerAddress serverAddress = new ServerAddress("localhost",27017);  
            List<ServerAddress> addrs = new ArrayList<ServerAddress>();  
            addrs.add(serverAddress);  
              
            //MongoCredential.createScramSha1Credential()三个参数分别为 用户名 数据库名称 密码  
            MongoCredential credential = MongoCredential.createScramSha1Credential("username", "databaseName", "password".toCharArray());  
            List<MongoCredential> credentials = new ArrayList<MongoCredential>();  
            credentials.add(credential);  
              
            //通过连接认证获取MongoDB连接  
            MongoClient mongoClient = new MongoClient(addrs,credentials);  
              
            //连接到数据库  
            MongoDatabase mongoDatabase = mongoClient.getDatabase("databaseName");  
            System.out.println("Connect to database successfully");  
                          
            //获取集合 参数为“集合名称”  
            MongoCollection<Document> mongoCollection = mongoDatabase.getCollection("collectionName");  
            System.out.println("Collection mycol selected successfully");  
              
            //插入文档  
            /** 
             * 1. 创建文档 org.bson.Document 参数为key-value的格式 
             * 2. 创建文档集合List<Document> 
             * 3. 将文档集合插入数据库集合中 mongoCollection.insertMany(List<Document>) 插入单个文档可以用 mongoCollection.insertOne(Document) 
             * */  
            Document document = new Document("title", "MongoDB").  
                    append("description", "database").  
                    append("likes", 100).  
                    append("by", "Fly");  
            List<Document> documents = new ArrayList<Document>();  
            documents.add(document);  
            mongoCollection.insertMany(documents);  
            System.out.println("Document inserted successfully");  
              
        } catch (Exception e) {  
            System.err.println( e.getClass().getName() + ": " + e.getMessage() );  
        }  
    }  
}

删除文档.java

import java.util.ArrayList;  
import java.util.List;  
import org.bson.Document;  
import com.mongodb.MongoClient;  
import com.mongodb.MongoCredential;  
import com.mongodb.ServerAddress;  
import com.mongodb.client.FindIterable;  
import com.mongodb.client.MongoCollection;  
import com.mongodb.client.MongoCursor;  
import com.mongodb.client.MongoDatabase;  
import com.mongodb.client.model.Filters;  
  
public class MongoDBJDBC {  
    public static void main(String[] args){  
        try {  
            //连接到MongoDB服务 如果是远程连接可以替换“localhost”为服务器所在IP地址  
            //ServerAddress()两个参数分别为 服务器地址 和 端口  
            ServerAddress serverAddress = new ServerAddress("localhost",27017);  
            List<ServerAddress> addrs = new ArrayList<ServerAddress>();  
            addrs.add(serverAddress);  
              
            //MongoCredential.createScramSha1Credential()三个参数分别为 用户名 数据库名称 密码  
            MongoCredential credential = MongoCredential.createScramSha1Credential("userName", "databaseName", "password".toCharArray());  
            List<MongoCredential> credentials = new ArrayList<MongoCredential>();  
            credentials.add(credential);  
              
            //通过连接认证获取MongoDB连接  
            MongoClient mongoClient = new MongoClient(addrs,credentials);  
              
            //连接到数据库  
            MongoDatabase mongoDatabase = mongoClient.getDatabase("<span style="font-family: Arial, Helvetica, sans-serif;">databaseName</span><span style="font-family: Arial, Helvetica, sans-serif;">");</span>  
            System.out.println("Connect to database successfully");  
              
            //获取集合 参数为“集合名称”  
            MongoCollection<Document> mongoCollection = mongoDatabase.getCollection("collectionName");  
            System.out.println("Collection mycol selected successfully");  
              
            //删除符合条件的第一个文档  
            mongoCollection.deleteOne(Filters.eq("likes", 200));  
            //删除所有符合条件的文档  
            mongoCollection.deleteMany (Filters.eq("likes", 200));  
            //检索查看结果  
            FindIterable<Document> findIterable = mongoCollection.find();  
            MongoCursor<Document> mongoCursor = findIterable.iterator();  
            while(mongoCursor.hasNext()){  
                System.out.println(mongoCursor.next());  
            }  
              
        } catch (Exception e) {  
            System.err.println( e.getClass().getName() + ": " + e.getMessage() );  
        }  
    }  
}

创建集合.java

import java.util.ArrayList;  
import java.util.List;  
import com.mongodb.MongoClient;  
import com.mongodb.MongoCredential;  
import com.mongodb.ServerAddress;  
import com.mongodb.client.MongoDatabase;  
  
public class MongoDBJDBC {  
    public static void main(String[] args){  
        try {  
            //连接到MongoDB服务 如果是远程连接可以替换“localhost”为服务器所在IP地址  
            //ServerAddress()两个参数分别为 服务器地址 和 端口  
            ServerAddress serverAddress = new ServerAddress("localhost",27017);  
            List<ServerAddress> addrs = new ArrayList<ServerAddress>();  
            addrs.add(serverAddress);  
              
            //MongoCredential.createScramSha1Credential()三个参数分别为 用户名 数据库名称 密码  
            MongoCredential credential = MongoCredential.createScramSha1Credential("username", "databaseName", "password".toCharArray());  
            List<MongoCredential> credentials = new ArrayList<MongoCredential>();  
            credentials.add(credential);  
              
            //通过连接认证获取MongoDB连接  
            MongoClient mongoClient = new MongoClient(addrs,credentials);  
              
            //连接到数据库  
            MongoDatabase mongoDatabase = mongoClient.getDatabase("databaseName");  
            System.out.println("Connect to database successfully");  
              
            //创建集合 参数为 “集合名称”  
            mongoDatabase.createCollection("collectionName");  
            System.out.println("Collection created successfully");  
        } catch (Exception e) {  
            System.err.println( e.getClass().getName() + ": " + e.getMessage() );  
        }  
    }  
}

创建数据库.java

import java.util.ArrayList;  
import java.util.List;  
import com.mongodb.MongoClient;  
import com.mongodb.MongoCredential;  
import com.mongodb.ServerAddress;  
import com.mongodb.client.MongoDatabase;  
  
public class MongoDBJDBC {  
    public static void main(String[] args){  
        try {  
            //连接到MongoDB服务 如果是远程连接可以替换“localhost”为服务器所在IP地址  
            //ServerAddress()两个参数分别为 服务器地址 和 端口  
            ServerAddress serverAddress = new ServerAddress("localhost",27017);  
            List<ServerAddress> addrs = new ArrayList<ServerAddress>();  
            addrs.add(serverAddress);  
              
            //MongoCredential.createScramSha1Credential()三个参数分别为 用户名 数据库名称 密码  
            MongoCredential credential = MongoCredential.createScramSha1Credential("username", "databaseName", "password".toCharArray());  
            List<MongoCredential> credentials = new ArrayList<MongoCredential>();  
            credentials.add(credential);  
              
            //通过连接认证获取MongoDB连接  
            MongoClient mongoClient = new MongoClient(addrs,credentials);  
              
            //连接到数据库  
            MongoDatabase mongoDatabase = mongoClient.getDatabase("databaseName");  
            System.out.println("Connect to database successfully");  
        } catch (Exception e) {  
            System.err.println( e.getClass().getName() + ": " + e.getMessage() );  
        }  
    }  
}

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java的mongodb操作