接触MONGDB，感觉用起来还挺好。今天做了一个小demo。
一、启动mongdb的服务
需要指定目录，这个目录是存放数据库的。
查看服务是否已经启动。可以查看端口（默认为27017）的状态。
二、编写JAVA代码
需要引入mongdb的JAR包。
编写代码：
public class demo {
public static void main(String[] args) {
try {
Mongo mongo = new Mongo("localhost", 27017);
DB db = mongo.getDB("company");
DBCollection collection = db.getCollection("employees");
BasicDBObject employee = new BasicDBObject();
employee.put("name", "Hannah");
employee.put("no", 2);
collection.insert(employee);
BasicDBObject searchEmployee = new BasicDBObject();
searchEmployee.put("no", 2);
DBCursor cursor = collection.find(searchEmployee);
while (cursor.hasNext()) {
System.out.println(cursor.next());
}
System.out.println("The Search Query has Executed!");
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (MongoException e) {
e.printStackTrace();
}
}
}