java操作mongodb数据库

来源：互联网发布：win32编程还有用吗编辑：程序博客网时间：2024/06/04 20:08
所用mongodb版本：2.6.6 windows版
所用java驱动包：mongo-java-driver-2.6.5.jar
MongoTest.java
package mongodb;import org.junit.Test;import com.mongodb.BasicDBList;import com.mongodb.BasicDBObject;import com.mongodb.DB;import com.mongodb.DBCollection;import com.mongodb.DBCursor;import com.mongodb.DBObject;import com.mongodb.Mongo;public class MongoTest {@Testpublic void findAll() throws Exception{Mongo mongo=new Mongo("127.0.0.1", 27017);DB db = mongo.getDB("test");DBCollection dbCollection = db.getCollection("users");DBCursor dbCursor = dbCollection.find();while(dbCursor.hasNext()){DBObject dbObject = dbCursor.next();System.out.println(dbObject.toString());} }@Testpublic void limitFind() throws Exception{Mongo mongo=new Mongo("127.0.0.1", 27017);DB db = mongo.getDB("test");DBCollection dbCollection = db.getCollection("users");DBCursor dbCursor = dbCollection.find().limit(3).skip(1);while(dbCursor.hasNext()){DBObject dbObject = dbCursor.next();System.out.println(dbObject.toString());} }@Testpublic void findByCondition() throws Exception{Mongo mongo=new Mongo("127.0.0.1", 27017);DB db = mongo.getDB("test");DBCollection dbCollection = db.getCollection("users");DBObject name=new BasicDBObject();name.put("name", "zhangsan");DBObject age=new BasicDBObject();age.put("age", 30);BasicDBList conitionList=new BasicDBList();conitionList.add(name);conitionList.add(age);DBObject searchdb=new BasicDBObject();searchdb.put("$and", conitionList);// DBObject condition=new BasicDBObject();// condition.put("$gt", 30);// DBObject age=new BasicDBObject();// age.put("age", condition);DBCursor dbCursor = dbCollection.find(searchdb);while(dbCursor.hasNext()){DBObject dbObject = dbCursor.next();System.out.println(dbObject.toString());} }@Testpublic void insert() throws Exception{Mongo mongo=new Mongo("127.0.0.1", 27017);DB db = mongo.getDB("test");DBCollection dbCollection = db.getCollection("users");DBObject dbObject=new BasicDBObject();dbObject.put("name", "zhangsan3");dbObject.put("age", 303);dbCollection.insert(dbObject);findAll();}@Testpublic void remove() throws Exception{Mongo mongo=new Mongo("127.0.0.1", 27017);DB db = mongo.getDB("test");DBCollection dbCollection = db.getCollection("users");DBObject dbObject=new BasicDBObject();dbObject.put("name", 30);dbCollection.remove(dbObject);findAll();}@Testpublic void update() throws Exception{Mongo mongo=new Mongo("127.0.0.1", 27017);DB db = mongo.getDB("test");DBCollection dbCollection = db.getCollection("users");DBObject qObject=new BasicDBObject();qObject.put("name", "小乔");DBObject oObject=new BasicDBObject();oObject.put("name", "zhengpengqiqo");oObject.put("age", 20);dbCollection.update(qObject, oObject);findAll();}}
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