Java Mongodb Convert JSON Data To DBObject Example

Java Mongodb Convert JSON Data To DBObject Example

·         Create a Maven project and add below dependency in pom.xml

              <dependency>

                     <groupId>org.mongodb</groupId>

                     <artifactId>mongo-java-driver</artifactId>

                     <version>2.5.2</version>

              </dependency>

·         Create a Java class to convert JSON Data To DBObject

package com.pretechsol;

import java.net.UnknownHostException;

import com.mongodb.DB;

import com.mongodb.DBCollection;

import com.mongodb.DBCursor;

import com.mongodb.DBObject;

import com.mongodb.Mongo;

import com.mongodb.MongoException;

import com.mongodb.util.JSON;

public class PretechJSONDBObjectConverstion {

   /**

    * @param args

    */

   public static void main(String[] args) {

          try {

                 Mongo mongo = new Mongo("localhost", 27017);

                 DB db = mongo.getDB("pretechdbTest");

                 DBCollection collection = db.getCollection("pretechDocument");

                 // convert JSON to DBObject directly

                 DBObject dbObject = (DBObject) JSON

                               .parse("{'name':'pretech', 'address':'Bangalore'}");

                 collection.insert(dbObject);

                 DBCursor cursorDoc = collection.find();

                 while(cursorDoc.hasNext()) {

                        System.out.println(cursorDoc.next());

                 }

                 System.out.println("Parsing completed");

          } catch(UnknownHostException e) {

                 e.printStackTrace();

          } catch (MongoException e) {

                 e.printStackTrace();

          }

   }

}

·         Output

{ "_id" : { "$oid" : "502fc9c9c342ea4c65907052"} , "name" : "pretech" , "address" : "Bangalore"}

{ "_id" : { "$oid" : "50596856efa3288bdd9dcc30"} , "name" : "pretech" , "address" : "Bangalore"}

Parsing completed