Insert JSON In Collection In MongoDb in java




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  • Program to Insert JSON In Collection In MongoDb in java >


Program to Insert JSON In Collection In MongoDb in java >
package insertDocumentInCollectionInMongoDB;
/**
* Write a program to Insert JSON In Collection In MongoDb in java
*/
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.MongoClient;
import com.mongodb.MongoClientURI;
import com.mongodb.util.JSON;
public class InsertDocumentInCollectionInMongoDb2_Json {
   public static void main(String[] args) {
          /* Connect to MongoDB */
          MongoClient mongoClient =
                       new MongoClient(new MongoClientURI("mongodb://localhost:27017"));
         
         
          /* Connect to DATABASE */
          //If in case database doesn't exists, it will be created at runtime
          DB db = mongoClient.getDB("mydb");
                      
          /* Get the COLLECTION (TABLE) */
          //If in case collection (Table) doesn't exists, it will be created at runtime
          DBCollection dbCollection = db.getCollection("employee");
          /*If collection already exists, you may remove everything
          from collection for perfect OUTPUT of program*/
          //dbCollection.remove(new BasicDBObject()); //Not Mandatory
          /** Create JSON 1 */
          String json1= "{id : 1,  firstName:'ankit'}";      
          DBObject dbObject1 = (DBObject)JSON.parse(json1);
         
          /** INSERT JSON1 in COLLECTION in MongoDB */
          System.out.println("INSERT JSON1 >");
          dbCollection.insert(dbObject1);
         
          /** Create JSON 2 */
          String json2= "{id : 2,  firstName:'sam'}";        
          DBObject dbObject2  = (DBObject)JSON.parse(json2);
          /** INSERT JSON2 in COLLECTION in MongoDB */
          System.out.println("INSERT JSON1 >");
          dbCollection.insert(dbObject2);
         
          /* Display documents of  COLLECTION in MongoDB */
          System.out.println("Display documents of COLLECTION in MongoDB >");
          DBCursor cursor = dbCollection.find();
          while (cursor.hasNext()) {
                 System.out.println(cursor.next());
          }
  
   }
}
/* OUTPUT
INSERT JSON1 >
INSERT JSON1 >
Display documents of COLLECTION in MongoDB >
{ "_id" : { "$oid" : "585c102a7dbba63084e26c1c"} , "id" : 1 , "firstName" : "ankit"}
{ "_id" : { "$oid" : "585c102a7dbba63084e26c1d"} , "id" : 2 , "firstName" : "sam"}
*/



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Summary -
So in this MongoDB tutorial we learned with example and program how to to Insert JSON In Collection In MongoDb in java.


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