java软件程序智能安装:win7_64+Eclipse+maven
一、准备工作
下载java驱动包
驱动包下载地址:http://mvnrepository.com/artifact/org.mongodb/mongo-java-driver
mongoDB下载:http://www.mongodb.org/
在线api:http://docs.mongodb.org/manual/applications/drivers/
二、安装Mongo
1.windows下安装方式:
安装Mongo数据库:
第一步:下载安装包:如果是win系统,注意是64位还是32位版本的,请选择正确的版本。
第二步:新建目录“D:\MongoDB”,解压下载到的安装包,找到bin目录下面全部.exe文件,拷贝到刚创建的目录下。
第三步:在“D:\MongoDB”目录下新建“data”文件夹,它将会作为数据存放的根文件夹。
配置Mongo服务端:
打开CMD窗口,按照如下方式输入命令:
> d:
> cd D:\MongoDB
> mongod --dbpath D:\MongoDB\data
启动成功后从浏览器访问:http://localhost:27017/
标明windows下的mongodb已经启动成功;
2.linux安装方式:
下载后解压确保数据库目录大小剩余空间在3G以上;
这里采用配置文件方式启动:在mongodb的根目录创建一个名为:mongodb.conf的文件,内容如下:
#fork=true #以守护进程的方式运行,创建服务器进程
##master=true #单主从配置时设为主服务器
##salve=true ##单主从配置时设为从服务器
#replSet=blort #设置富本集的名字
#shardsvr=true #设置是否分片
#repairpath = /mongodb2.6.3/repair
whpx.net/peixunjigou/20140627143039343/show.html?iid=663850
#pidfilepath = /mongodb2.6.3/mongodb.pid
#sysinfo = true
#verbose = true
#cpu = true
#Network and security set
#Management
#nohttpinterface = true
#rest = true
#syncdelay = 5
#Directory and relavent set
dbpath = /mongodb2.6.3/data #数据库路径
whpx.net/peixunjigou/20140627143039343/show.html?iid=664681
logpath = /mongodb2.6.3/logs/mongodb.log #日志输出文件路径
logappend = true #日志输出方式
directoryperdb = true
noauth = true
port = 8888 #端口号
maxConns = 1024
fork = true
quota = true
quotaFiles = 1024
nssize = 16
whpx.net/peixunjigou/20140627143039343/show.html?iid=665844
启动方式如下:/mongodb2.6.3/bin/mongod -f /mongodb2.6.3/mongodb.conf
记得开启linux的访问端口:
#vi /etc/sysconfig/iptables
yy复制一行
whpx.net/peixunjigou/20140627143039343/show.html?iid=663196
p粘贴
修改端口
#service iptables restart
设置开机自启动
#echo /mongodb2.6.3/bin/mongod -f /mongodb2.6.3/mongodb.config >>/etc/rc.local
数据库启动完成,接下来是创建数据库和集合:
mongo --port 8888
whpx.net/peixunjigou/20140627143039343/show.html?iid=666533
> show dbs
admin (empty)
local 0.078GB
> use admin(切换管理用户)
switched to db admin
> db.mymongo(创建数据库)
admin.mymongo
> db.addUser("root","root")(添加用户)
WARNING: The 'addUser' shell helper is DEPRECATED. Please use 'createUser' instead
Successfully added user: { "user" : "root", "roles" : [ "root" ] }
> db.auth("root","root")(添加登陆用户)
whpx.net/peixunjigou/20140627143039343/show.html?iid=666999
1
> db.createCollection("t_users")(添加表)
{ "ok" : 1 }
> show collections(显示表)
system.indexes
system.users
system.version
t_users
> db.t_users.save({age:21})(存储数据)
WriteResult({ "nInserted" : 1 })
> db.t_users.find()(查询所有数据)
{ "_id" : ObjectId("53a2e45e4a674863b4ac5398"), "age" : 21 }
mongodb 删除数据库
use mymongo;
db.dropDatabase();
whpx.net/peixunjigou/20140627143039343/show.html?iid=667805
mongodb删除表
db.t_users.drop();
MongoDB服务停止:
在linux下大家停止很多服务都喜欢直接kill -9 PID,但是对于MongoDB如果执行了kill -9 PID,在下次启动时可能提示错误,导致服务无法启动,这个时候可以通过执行:
Java代码
rm -f /app/hadoop/db/mongod.lock
也即删除指定数据目录下的mongod.lock文件即可。
正常停止方法:
kill -2 PID
或者
Java代码
./mongo -host ip:port
先连接需要停止的服务,然后:
Java代码
whpx.net/peixunjigou/20140627143039343/show.html?iid=668575
>use admin
>db.shutdownServer();
这样也可以正常停止服务。
三、Java操作MongoDB示例
1、 建立Test.java,完成简单的mongoDB数据库操作
try {
Mongo mg = new MongoClient("192.168.186.129", 8888);
DB db = mg.getDB("mymongo");
// 用于判断用户登录
// if(!db.authenticate("sdap", "sdap123".toCharArray())){
// 方法已经不建议使用
// }
Set collectionNames = db.getCollectionNames();
for (String string : collectionNames) {
System.out.println(string);
}
DBCollection collection2 = db.getCollection("t_users2");
collection2 = db.getCollection("t_users2");
CarPasitionObj u = new CarPasitionObj();
u.setLa(1231d);
u.setLo(42342d);
u.setPn("京1aaa");
whpx.net/peixunjigou/20140627143039343/show.html?iid=669771
u.setTp(12);
String obj2Json = JsonUtils.getSingletonInstance().obj2Json(u);
BasicDBObject dbObject1=new BasicDBObject();
dbObject1.put("key", "123131");
dbObject1.put("value", obj2Json);
collection2.save(dbObject1);
BasicDBObject dbObject=new BasicDBObject();
whpx.net/peixunjigou/20140627143039343/show.html?iid=670550
dbObject.put("key", "123131");
DBCursor find = collection2.find(dbObject);
while (find.hasNext()) {
DBObject next = find.next();
String key = (String)next.get("key");
String json = (String)next.get("value");
System.out.println(key);
CarPasitionObj formJson = JsonUtils.getSingletonInstance().formJson(json, CarPasitionObj.class);
System.out.println(formJson.getPn());
whpx.net/peixunjigou/20140627143039343/show.html?iid=671371
}
} catch (UnknownHostException e) {
e.printStackTrace();
}
下面贴上我自己的mongodb的工具类:
/**
* Project Name:main
* File Name:MongodbCacheManagerUtil.java
* Package Name:com.hdsx.taxi.driver.cq.cache
* Date:2014年4月9日下午12:49:55
* Copyright (c) 2014, sid Jenkins All Rights Reserved.
whpx.net/peixunjigou/20140627143039343/show.html?iid=671862
*
*
*/
package com.hdsx.taxi.driver.cq.mongodb;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;
import org.apache.log4j.Logger;
import com.hdsx.taxi.driver.cq.module.InitServletModule;
import com.hdsx.taxi.driver.cq.tcp.util.JsonUtils;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
whpx.net/peixunjigou/20140627143039343/show.html?iid=672236
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.Mongo;
import com.mongodb.MongoClient;
/**
whpx.net/peixunjigou/20140627143039343/show.html?iid=672717
* ClassName:MongodbCacheManagerUtil
* Function: TODO ADD FUNCTION.
* Reason: TODO ADD REASON.
* Date: 2014年4月9日 下午12:49:55
* @author sid
* @see
*/
public class MongodbManagerUtil {
private static final Logger logger = Logger.getLogger(MongodbManagerUtil.class);
private Mongo mg = null;
whpx.net/peixunjigou/20140627143039343/show.html?iid=673085
private DB db = null;
private volatile static MongodbManagerUtil singleton = null;
public static final String KEY = "key";
public static final String VALUE = "value";
public static MongodbManagerUtil getSingletonInstance() {
if (singleton == null) {
whpx.net/peixunjigou/20140627143039343/show.html?iid=673482
synchronized (MongodbManagerUtil.class) {
if (singleton == null) {
singleton = new MongodbManagerUtil();
}
}
singleton = new MongodbManagerUtil();
}
return singleton;
}
private MongodbManagerUtil() {
if (logger.isDebugEnabled()) {
logger.debug("MongodbCacheManagerUtil() - start "); //$NON-NLS-1$
}
try {
whpx.net/peixunjigou/20140627143039343/show.html?iid=662724
whpx.net/peixunjigou/20140627143039343/show.html?iid=674014
mg = new MongoClient("192.168.186.129", 8888);
db = mg.getDB("mymongo");
} catch (UnknownHostException e) {
e.printStackTrace();
}
if (logger.isDebugEnabled()) {
logger.debug("MongodbCacheManagerUtil() - end"); //$NON-NLS-1$
}
}
/**
*
* getCache:(获取缓存对象).
*
* @author sid
* @param name
* @return
*/
whpx.net/peixunjigou/20140627143039343/show.html?iid=674574
public DBCollection getCache(String name){
return this.db.getCollection(name);
}
/**
*
* put:(在指定缓存对象中加入需要缓存的对象).
*
* @author sid
* @param cacheName
whpx.net/peixunjigou/20140627143039343/show.html?iid=675063
* @param key
* @param value
*/
public void put(String cacheName, String key, Object value) {
DBCollection cache = this.db.getCollection(cacheName);
String obj2Json = JsonUtils.getSingletonInstance().obj2Json(value);
BasicDBObject obj = new BasicDBObject();
obj.put(MongodbManagerUtil.KEY, key);
obj.put(MongodbManagerUtil.VALUE, obj2Json);
BasicDBObject basicDBObject = new BasicDBObject(MongodbManagerUtil.KEY, key);
int size = cache.find(basicDBObject).count();
if (size==0) {
cache.save(obj);
}else{
cache.update(basicDBObject, obj);
}
}
/**
*
* get:(根据key从指定缓存对象中获取对象).
*
* @author sid
* @param cacheName
* @param key
* @return
*/
public T get(String cacheName, String key, Class classOfT) {
DBCollection cache = this.db.getCollection(cacheName);
List array = cache.find(new BasicDBObject(MongodbManagerUtil.KEY, key)).toArray();
if (array == null||array.size()==0) {
return null;
}
DBObject dbObject = array.get(0);
String json = (String)dbObject.get(MongodbManagerUtil.VALUE);
return JsonUtils.getSingletonInstance().formJson(json, classOfT);
}
/**
*
* remove:(从指定缓存对象中清除对象).
*
* @author sid
* @param cacheName
* @param key
*/
public void remove(String cacheName, String key) {
DBCollection cache = this.db.getCollection(cacheName);
cache.remove(new BasicDBObject(MongodbManagerUtil.KEY,key));
}
/**
*
* getKeys:(获取keys列表).
*
* @author sid
* @param cacheName
* @return
*/
public List getKeys(String cacheName){
List list = new ArrayList();
DBCollection cache = this.db.getCollection(cacheName);
DBCursor find = cache.find();
while (find.hasNext()) {
DBObject next = find.next();
String key = (String) next.get(MongodbManagerUtil.KEY);
list.add(key);
}
return list;
}
/**
*
* containsKey:(判断消息是否存在).
*
* @author sid
* @param cacheName
* @param key
* @return
*/
public Boolean containsKey(String cacheName,String key){
DBCollection cache = this.db.getCollection(cacheName);
BasicDBObject basicDBObject = new BasicDBObject(MongodbManagerUtil.KEY, key);
int size = cache.find(basicDBObject).count();
if (size==0) {
return false;
}else{
return true;
}
}
}
除了save、insert、update;mongodb还有remove等操作
其中find方法可以指定查询条件:
大于等于:$gte
小于等于:$lte
不等于:$ne
demo:users.find(new BasicDBObject("age", new BasicDBObject("$gte", 24)))