JAVAはMongoDBを使用
1740 ワード
JAVAはMongoDBを使用
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.Mongo;
import com.mongodb.util.JSON;
public class MongoGBTest {
public static void main(String[] args) throws Exception {
Mongo mg = new Mongo();
// Database
for (String name : mg.getDatabaseNames()) {
System.out.println("dbName: " + name);
}
DB db = mg.getDB("test");
//
for (String name : db.getCollectionNames()) {
System.out.println("collectionName: " + name);
}
DBCollection users = db.getCollection("users");
for (int i = 0; i < 3; i++) {
DBObject o = new BasicDBObject().append("name", "name" + i).append("age", 20 + i).append("no", i + 10);
users.insert(o);
}
//
DBCursor cur = users.find();
while (cur.hasNext()) {
System.out.println(cur.next());
}
System.out.println(cur.count());
System.out.println(cur.getCursorId());
System.out.println(JSON.serialize(cur));
}
}