MongoDB java api for 插入和单collection基本查询使用示例

[root@localhost src]# mongo
MongoDB shell version: 1.8.1
connecting to: test
> show dbs;
admin   (empty)
local   (empty)
> db
test
> db.addUser("iwtxokhtd","123456");
{
"user" : "iwtxokhtd",
"readOnly" : false,
"pwd" : "c728e00401a72282a2919648723dbff7"
}
> show collections;
system.indexes
system.users
> db.system.users.find();
{ "_id" : ObjectId("4dd73c7d247cb75e4995757b"), "user" : "iwtxokhtd", "readOnly" : false, "pwd" : "c728e00401a72282a2919648723dbff7" }
>

/**
* MongoDBTest
* MongoDB　java api的初步使用示例
* 此次只介绍一下insert和query(基本单collection查询)两种操作
*/
package com.labci.mongodb.test;
import java.net.UnknownHostException;
import java.util.Iterator;
import java.util.regex.Pattern;
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.MongoException;
/**
* @author Bill Tu(tujiyue/iwtxokhtd)
* May 21, 2011[12:06:41 PM]
*
*/
public class MongoDBJavaAPITest {
private static final String HOST = "192.168.1.86";
private static final int PORT = 27017;
private static final String USER = "iwtxokhtd";
private static final String PASSWORD = "123456";
private static final String DB_NAME = "test";
private static final String COLLECTION = "data_test";
private static final int SIZE = 10;

/**
* 进行测试
* @throws Exception
*/
private static void initTest() throws Exception{
try {
Mongo conn=new Mongo(HOST,PORT);//建立数据库连接
DB testDB=conn.getDB(DB_NAME);//取得test数据库
/**
* 如果test数据库没有设定用户权限认证，则无需下面的验证
*/
boolean loginSuccess=testDB.authenticate(USER, PASSWORD.toCharArray());
if(!loginSuccess){
throw new Exception("登录"+DB_NAME+"验证失败,请确认用户名和密码");
}
/**
* 如果COLLECTION不存在，则MongoDB会自动为你创建此collection
*/
DBCollection collection=testDB.getCollection(COLLECTION);
//开始插入数据操作
insertData(collection,SIZE);
//查询操作
findData(collection);

} catch (UnknownHostException e) {
e.printStackTrace();
} catch (MongoException e) {
e.printStackTrace();
}
}

/**
* 向collection插入size条记录
*/
private static void insertData(DBCollection collection,int size){
long beginTime=System.currentTimeMillis();
for(int i=1;i<=size;i++){
BasicDBObject basic=new BasicDBObject();
basic.put("userId", "1001017"+i);
basic.put("userName", "Bill Tu"+i);
basic.put("gender", "m"+i);

BasicDBObject interests=new BasicDBObject();
interests.put("game", "game"+i);
interests.put("ball", "ball"+i);
interests.put("other", "nothing"+i);

basic.put("interests", interests);

collection.insert(basic);
}
long endTime=System.currentTimeMillis();
System.out.println("插入用时："+(endTime-beginTime)+" ms");

}

/**
* 根据指定collection单collection查询
*
*/
private static void findData(DBCollection collection){
//查询所有记录
long beginTime=System.currentTimeMillis();
DBCursor queryAll=collection.find();
System.out.println("所有记录：");
for(Iterator<DBObject> iter=queryAll.iterator();iter.hasNext();){
System.out.println(iter.next());
}
long endTime=System.currentTimeMillis();
System.out.println("查询所有记录用时："+(endTime-beginTime)+" ms");

//只看第一条记录
DBObject queryFirstRecord=collection.findOne();
System.out.println("第一条记录："+queryFirstRecord);

//根据单条件查询
DBObject singleCondition_query=new BasicDBObject();
//根据userId=10010172条件来查
singleCondition_query.put("userId", "10010172");

DBCursor singleQueryResult=collection.find(singleCondition_query);
for(Iterator<DBObject> iter=singleQueryResult.iterator();iter.hasNext();){
System.out.println("按单条件查询结果："+iter.next());
}

//根据复合条件来查询
DBObject compoundCondition_query=new BasicDBObject();
//根据userId=10010171&userName=Bill Tu1来查询
compoundCondition_query.put("userId", "10010171");
compoundCondition_query.put("userName", "Bill Tu1");
DBCursor compoundQueryResult=collection.find(compoundCondition_query);
System.out.println("按复合条件查询结果：");
for(Iterator<DBObject> iter=compoundQueryResult.iterator();iter.hasNext();){
System.out.println(iter.next());
}

//in查询
DBObject in_data=new BasicDBObject("$in",new Object[]{"10010171","10010172"});
//根据userId in('10010171','10010172')查询
DBObject in_query=new BasicDBObject();
in_query.put("userId", in_data);
DBCursor inQueryResult=collection.find(in_query);
System.out.println("按in条件查询结果：");
for(Iterator<DBObject> iter=inQueryResult.iterator();iter.hasNext();){
System.out.println(iter.next());
}

//模糊查询
DBObject fuzzy_query=new BasicDBObject();
String keyWord="10010171";
Pattern pattern = Pattern.compile("^" + keyWord + ".*$", Pattern.CASE_INSENSITIVE);
//根据userId like 1001017%查询
fuzzy_query.put("userId", pattern);
DBCursor fuzzyQueryResult=collection.find(fuzzy_query);
System.out.println("按模糊条件查询结果：");
for(Iterator<DBObject> iter=fuzzyQueryResult.iterator();iter.hasNext();){
System.out.println(iter.next());
}

}

/**
* @param args
*/
public static void main(String[] args) {
try {
initTest();
} catch (Exception e) {
e.printStackTrace();
}
}
}

　插入记录用时：16 ms
所有记录：
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a30"} , "userId" : "10010171" , "userName" : "Bill Tu1" , "gender" : "m1" , "interests" : { "game" : "game1" , "ball" : "ball1" , "other" : "nothing1"}}
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a31"} , "userId" : "10010172" , "userName" : "Bill Tu2" , "gender" : "m2" , "interests" : { "game" : "game2" , "ball" : "ball2" , "other" : "nothing2"}}
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a32"} , "userId" : "10010173" , "userName" : "Bill Tu3" , "gender" : "m3" , "interests" : { "game" : "game3" , "ball" : "ball3" , "other" : "nothing3"}}
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a33"} , "userId" : "10010174" , "userName" : "Bill Tu4" , "gender" : "m4" , "interests" : { "game" : "game4" , "ball" : "ball4" , "other" : "nothing4"}}
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a34"} , "userId" : "10010175" , "userName" : "Bill Tu5" , "gender" : "m5" , "interests" : { "game" : "game5" , "ball" : "ball5" , "other" : "nothing5"}}
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a35"} , "userId" : "10010176" , "userName" : "Bill Tu6" , "gender" : "m6" , "interests" : { "game" : "game6" , "ball" : "ball6" , "other" : "nothing6"}}
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a36"} , "userId" : "10010177" , "userName" : "Bill Tu7" , "gender" : "m7" , "interests" : { "game" : "game7" , "ball" : "ball7" , "other" : "nothing7"}}
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a37"} , "userId" : "10010178" , "userName" : "Bill Tu8" , "gender" : "m8" , "interests" : { "game" : "game8" , "ball" : "ball8" , "other" : "nothing8"}}
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a38"} , "userId" : "10010179" , "userName" : "Bill Tu9" , "gender" : "m9" , "interests" : { "game" : "game9" , "ball" : "ball9" , "other" : "nothing9"}}
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a39"} , "userId" : "100101710" , "userName" : "Bill Tu10" , "gender" : "m10" , "interests" : { "game" : "game10" , "ball" : "ball10" , "other" : "nothing10"}}
查询所有记录用时：16 ms
第一条记录：{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a30"} , "userId" : "10010171" , "userName" : "Bill Tu1" , "gender" : "m1" , "interests" : { "game" : "game1" , "ball" : "ball1" , "other" : "nothing1"}}
按单条件查询结果：{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a31"} , "userId" : "10010172" , "userName" : "Bill Tu2" , "gender" : "m2" , "interests" : { "game" : "game2" , "ball" : "ball2" , "other" : "nothing2"}}
按复合条件查询结果：
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a30"} , "userId" : "10010171" , "userName" : "Bill Tu1" , "gender" : "m1" , "interests" : { "game" : "game1" , "ball" : "ball1" , "other" : "nothing1"}}
按in条件查询结果：
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a30"} , "userId" : "10010171" , "userName" : "Bill Tu1" , "gender" : "m1" , "interests" : { "game" : "game1" , "ball" : "ball1" , "other" : "nothing1"}}
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a31"} , "userId" : "10010172" , "userName" : "Bill Tu2" , "gender" : "m2" , "interests" : { "game" : "game2" , "ball" : "ball2" , "other" : "nothing2"}}
按模糊条件查询结果：
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a30"} , "userId" : "10010171" , "userName" : "Bill Tu1" , "gender" : "m1" , "interests" : { "game" : "game1" , "ball" : "ball1" , "other" : "nothing1"}}
{ "_id" : { "$oid" : "4dd747cb3a491e68a1a84a39"} , "userId" : "100101710" , "userName" : "Bill Tu10" , "gender" : "m10" , "interests" : { "game" : "game10" , "ball" : "ball10" , "other" : "nothing10"}}