????mongodb??????????

 

import java.util.ArrayList;
import java.util.List;
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;
import com.sun.mongodb.manager.MongodbManager;
/**
* mongodb????????
*
* @author jacklin
*
*/
public class Testcase {
public static void main(String[] args) {
// // ??????е?Database
// showDatabase();
// // ??????е???????
// showCollections();
// // ???????
// find();
// // ???????
// add();
// // ??????????
// addList();
// // ???????
// remove();
// // ???????
// modify();
}
/**
* ???????
*/
public static void modify() {
Mongo mg = MongodbManager.getMongo();
DB db = mg.getDB("test");
DBCollection users = db.getCollection("user");
DBObject userOld = new BasicDBObject();
userOld.put("name"?? "jack");
userOld.put("age"?? 24);
DBObject userNew = new BasicDBObject();
userNew.put("name"?? "jacky");
userNew.put("age"?? 26);
System.out.println(users.update(userOld?? userNew));
}
/**
* ???????
*/
public static void remove() {
Mongo mg = MongodbManager.getMongo();
DB db = mg.getDB("test");
DBCollection users = db.getCollection("user");
DBObject user = new BasicDBObject();
user.put("name"?? "hoojo");
System.out.println(users.remove(user));
}
/**
* ??????????
*/
public static void addList() {
Mongo mg = MongodbManager.getMongo();
DB db = mg.getDB("test");
DBCollection users = db.getCollection("user");
List<DBObject> list = new ArrayList<DBObject>();
DBObject user1 = new BasicDBObject("name"?? "lucy");
user1.put("age"?? 21);
DBObject user2 = new BasicDBObject("name"?? "lily");
user2.put("age"?? 22);
list.add(user1);
list.add(user2);
// ???List????
System.out.println(users.insert(list).getN());
}
/**
* ??????????
*/
public static void add() {
Mongo mg = MongodbManager.getMongo();
DB db = mg.getDB("test");
DBCollection users = db.getCollection("user");
DBObject user = new BasicDBObject();
user.put("name"?? "jack");
user.put("age"?? 24);
System.out.println(users.save(user).getN());
}
/**
* ???????
*/
public static void find() {
Mongo mg = MongodbManager.getMongo();
DB db = mg.getDB("test");
DBCollection users = db.getCollection("user");
// ??????е?????
DBCursor cur = users.find();
while (cur.hasNext()) {
System.out.println("data:" + cur.next());
}
System.out.println("count:" + cur.count());
System.out.println("cursorId:" + cur.getCursorId());
System.out.println("json:" + JSON.serialize(cur));
}
/**
* ??????е???????
*/
public static void showCollections() {
Mongo mg = MongodbManager.getMongo();
DB db = mg.getDB("test");
for (String name : db.getCollectionNames()) {
System.out.println("collectionName: " + name);
}
}
/**
* ??????е?Database
*/
public static void showDatabase() {
Mongo mg = MongodbManager.getMongo();
for (String name : mg.getDatabaseNames()) {
System.out.println("dbName: " + name);
}
}
}