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I want to store image documents in MongoDB. I am using java.

Any links or suggestions would be appreciated.

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For storing binary data like images you can use GridFS or implement your own realization; Download the driver and look at src/test/com/mongodb/gridfs/GridFSTest.java ;)

Edit: you are lucky today! I made complete code for you;) Enjoy!

package mongodb.testing.java; import com.mongodb.*; import com.mongodb.gridfs.*; import java.io.*; public class Main { public static byte[] LoadImage(String filePath) throws Exception { File file = new File(filePath); int size = (int)file.length(); byte[] buffer = new byte[size]; FileInputStream in = new FileInputStream(file); in.read(buffer); in.close(); return buffer; } public static void main(String[] args) throws Exception { //Load our image byte[] imageBytes = LoadImage("C:/Temp/bear.bmp"); //Connect to database Mongo mongo = new Mongo( "127.0.0.1" ); String dbName = "GridFSTestJava"; DB db = mongo.getDB( dbName ); //Create GridFS object GridFS fs = new GridFS( db ); //Save image into database GridFSInputFile in = fs.createFile( imageBytes ); in.save(); //Find saved image GridFSDBFile out = fs.findOne( new BasicDBObject( "_id" , in.getId() ) ); //Save loaded image from database into new image file FileOutputStream outputImage = new FileOutputStream("C:/Temp/bearCopy.bmp"); out.writeTo( outputImage ); outputImage.close(); } }
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thanks for your code. I also made a code for the same process. But yours is simple than mine!!!
So, to write to an html file, would you output the picture location on the server to the HTML?
Thank you very much, especially for the 'LoadImage' method.
this would work for files less than an int size. Larger than that would need to use chunks and save in parts
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For small (<1mb) images I'd suggest storing them in a binary field (byte[] in java); if you have larger files GridFS will work better.

I store lots of thumbnails in my documents directly using a simple binary field.

I use Morphia (http://code.google.com/p/morphia) to store my POJOs.

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I am going to store lot of images in mongo. Both thumbnails and ordinary size. Is pojo essential for me??!!!
Can you tell me how do you represent images in mongo. like, { "x":1, "y":2 } how do you represent images????
How you store your images? All in one document? or separate documents in one collections? or Say if i want to store multiple image in a document that looks like { "name" : "Tamil", "age" : 23, "Images"{"image1" : 123.jpg, "image2": abc.jpg}} how shall i do it with java
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Well, AFAIK, you cant store images in mongodb, you can store the links to images. And I am not high as I say this, if the images are small, like 100x100 px, U can try storing the image in binary, and reform and image on the fly. But, it will take some time to render the images, and hence I suggest you to save the link, and just fetch that image and populate it dynamically.

You can use GridFS to store larger binary objects.

Since you are new to mongoDB, take a look at:

Link 1

Link 2

Mongo+JAVA Tutorial

GridFS specs

You can also always ask on SO, I am also new to mongoDB, and wouldn't mind helping a newbie along :D

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How do you link GridFS file with plain document in mongodb. Say, I am uploading an big image and i store it in GridFS. I save the other details of the file in a document in any collection. How can i retrieve the associated image, when i read the document from collection???
i dont know if there is any API method to do it, you create a link between them, by creating a field in both collections, with the same values. So when you come across the value in the first collection, you jsut query the images collection with the value, and come across the corresponding image.