mongodb find multiple conditions code example

Example 1: java mongodb find with multiple conditions

BasicDBObject criteria = new BasicDBObject();
criteria.append("color", "black");
criteria.append("shape", "round");
criteria.append("weight", 100);

DBCursor cur = widgets.find(criteria);

Example 2: mongo console find by id

db.collection.find({_id:ObjectId('5e208c18d598b806c869ca37')}).pretty()

Example 3: mongoose find multiple conditions

User.find({$or:[{region: "NA"},{sector:"Some Sector"}]}, function(err, user) 
 {
    if (err)
    {
        res.send(err);
    }
    console.log(user);
    res.json(user);

 });

Example 4: mongodb find multiple fields

{ : , :  ... }