Java MongoDB非框架开发进阶--副本集链接开发
最近在用Java做MongoDB的副本集操作开发，由于网上的资料系统性较差，因此，这里进行系统性的记录，供大家参考。
1、MongoDB副本集设置说明
1）在没有进行用户权限设置的情况下进行MongoDB副本集设置，例如：设置副本集rs1
mongod --replSet rs1 --keyFile /home/mongoFile/key/r0 --fork --port 28010 --dbpath /home/mongoFile/data/r0 --logpath=/home/mongoFile/log/r0.log --logappend
mongod --replSet rs1 --keyFile /home/mongoFile/key/r1 --fork --port 28011 --dbpath /home/mongoFile/data/r1 --logpath=/home/mongoFile/log/r1.log --logappend
mongod --replSet rs1 --keyFile /home/mongoFile/key/r2 --fork --port 28012 --dbpath /home/mongoFile/data/r2 --logpath=/home/mongoFile/log/r2.log --logappend
config_rs1 = {_id: 'rs1', members: [{_id: 0, host: '192.168.43.12:28010'},{_id: 1, host: '192.168.43.12:28011'},{_id: 2, host: '192.168.43.12:28012'}]}
rs.initiate(config_rs1)
2）kill掉所有mongo服务，在各副本中创建数据库，以及权限。例如，要使用admin数据库
mongod --fork --port 28010 --dbpath /home/mongoFile/data/r0 --logpath=/home/mongoFile/log/r0.log --logappend
use admin
db.createUser({user:"admin",pwd:"admin",roles:[{role:"userAdminAnyDatabase",db:"admin"},{role:"clusterAdmin",db:"admin"},{role:"clusterManager",db:"admin"},{role:"readWrite",db:"admin"}]});
mongod --fork --port 28011 --dbpath /home/mongoFile/data/r1 --logpath=/home/mongoFile/log/r1.log --logappend
use admin
db.createUser({user:"admin",pwd:"admin",roles:[{role:"userAdminAnyDatabase",db:"admin"},{role:"clusterAdmin",db:"admin"},{role:"clusterManager",db:"admin"},{role:"readWrite",db:"admin"}]});
mongod --fork --port 28012 --dbpath /home/mongoFile/data/r2 --logpath=/home/mongoFile/log/r2.log --logappend
use admin
db.createUser({user:"admin",pwd:"admin",roles:[{role:"userAdminAnyDatabase",db:"admin"},{role:"clusterAdmin",db:"admin"},{role:"clusterManager",db:"admin"},{role:"readWrite",db:"admin"}]});3）现在所有的副本设置操作已经完成，重新启动个副本即可:
mongod --replSet rs1 --keyFile /home/mongoFile/key/r0 --fork --port 28010 --dbpath /home/mongoFile/data/r0 --logpath=/home/mongoFile/log/r0.log --logappend
mongod --replSet rs1 --keyFile /home/mongoFile/key/r1 --fork --port 28011 --dbpath /home/mongoFile/data/r1 --logpath=/home/mongoFile/log/r1.log --logappend
mongod --replSet rs1 --keyFile /home/mongoFile/key/r2 --fork --port 28012 --dbpath /home/mongoFile/data/r2 --logpath=/home/mongoFile/log/r2.log --logappend应用MongoClient链接池即可，示例代码如下：
package Database;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.bson.Document;
import Configuration.ConfigCallBack;
import com.mongodb.BasicDBObject;
import com.mongodb.BasicDBObjectBuilder;
import com.mongodb.MongoClient;
import com.mongodb.MongoCredential;
import com.mongodb.ServerAddress;
import com.mongodb.client.FindIterable;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoCursor;
import com.mongodb.client.MongoDatabase;
public class MongoDBAPI implements DataBaseCallBack{
public static void main(String[] args) throws InterruptedException{
System.out.println("start");
MongoDBAPI m_md = new MongoDBAPI();
DataBaseParameter m_dp = new DataBaseParameter();
m_dp.setM_DBname("gps");
m_dp.setM_IP("192.168.43.4");
m_dp.setM_Password("liangsheng");
m_dp.setM_Port(27017);
m_dp.setM_User("liangsheng");
m_md.SetInitParameter(m_dp);
if(m_md.InitDataBase()){
// DataBaseOperationParameter c_dbop = new DataBaseOperationParameter();
//插入数据验证
// c_dbop.setM_TableName("t7070_2016_4_22");
// c_dbop.setM_Data("aaaaaaaa");
// c_dbop.setM_Key("PP");
// c_dbop.setM_Value("ty");
// m_md.SetOperationParameter(c_dbop);
//m_md.CreateTable();
// while(true){
m_md.Test_InsertData();
// m_md.QueryDataBase();
// Thread.sleep(1000);
// }
}
else
System.out.println("Init error");
}
//mongodb操作对象
private MongoClient m_Mongoclient = null;
private MongoDatabase m_DB = null;
private MongoCollection m_Collection = null;
private volatile boolean isCheck = false;
//mongodb操作初始化参数
private String m_DBname;
private List m_DBparameters;
@Override
public boolean InitDataBase(){
if(null == m_Mongoclient){
try{
List c_addrs = new ArrayList();
List c_credentials = new ArrayList();
for(int i = 0;i();
m_DBname = p_dp.getM_DBname();
m_DBparameters.add(p_dp);
}
@Override
public void DestroyDataBase(){
if(null != m_Mongoclient){
m_Mongoclient.close();
m_Mongoclient = null;
m_DB = null;
m_Collection = null;
}
}
@Override
public void setAutoCreateInformation(ConfigCallBack p_config){
}
@Override
public void AutoCreateTable(){
}
//判断表格是否存在
@Override
public boolean checkTable(String p_name){
while(true){
if(!isCheck){
isCheck = true;
try{
if(m_DB.getCollection(p_name).count() > 0)
break;
else{
isCheck = false;
return false;
}
}catch(IllegalArgumentException e){
isCheck = false;
return false;
}
}
}
isCheck = false;
return true;
}
//手动创建表格
@Override
public boolean CreateTable(String p_name){
while(true){
if(!isCheck){
isCheck = true;
try{
m_DB.createCollection(p_name);
System.out.println("create collection success");
isCheck = false;
return true;
}catch(Exception e){
e.printStackTrace();
isCheck =false;
}
return false;
}
}
}
public boolean InsertData(Document p_data,String p_tablename){
if(null == p_data)
return false;
try{
m_Collection = m_DB.getCollection(p_tablename);
long c_cout = m_Collection.count();
p_data.append("_id", c_cout+1);
m_Collection.insertOne(p_data);
}catch(Exception e){
e.printStackTrace();
return false;
}
return true;
}
@Override
public boolean beginToDeal(BASEOPERATION p_operation, Object p_data, String p_tablename) {
// TODO Auto-generated method stub
if(null == p_operation || null == p_data)
return false;
if(p_data instanceof Document){
Document c_data = (Document) p_data;
switch(p_operation){
case insert:
if(InsertData(c_data, p_tablename))
break;
else
return false;
case query:
break;
default:
return false;
}
}
return true;
}
//测试查询数据库
@SuppressWarnings("deprecation")
public boolean QueryDataBase(){
try{
m_Collection = null;
// m_Collection = m_DB.getCollection("Vehicle7070_2016_4_22");
m_Collection = m_DB.getCollection("vehile集合");
System.out.println("集合 test 选择成功");
//检索所有文档
/**
* 1. 获取迭代器FindIterable
* 2. 获取游标MongoCursor
* 3. 通过游标遍历检索出的文档集合
* */
BasicDBObject query = new BasicDBObject();
query.put("TIME", BasicDBObjectBuilder.start("$gte",new Date(2016-1900,4-1,22,0,0,0)).add("$lte", new Date(2016-1900,4-1,22,23,59,0)).get());
BasicDBObject queryf = new BasicDBObject();
queryf.put("TIME", -1);
FindIterable c_findIterable = m_Collection.find(new Document("PP","ty")).sort(queryf);
// FindIterable c_findIterable = m_Collection.find(query);
MongoCursor c_mongoCursor = c_findIterable.iterator();
while(c_mongoCursor.hasNext()){
System.out.println(c_mongoCursor.next());
}
}
catch(Exception e){
e.printStackTrace();
}
return false;
}
//测试插入语句
public boolean Test_InsertData(){
try{
// m_Collection = m_DB.getCollection(m_DBOP.getM_TableName());
m_Collection = m_DB.getCollection("粤B 666888_2017_09_06");
System.out.println("集合 test 选择成功");
//IsoChronology
//插入文档
/**
* 1. 创建文档 org.bson.Document 参数为key-value的格式
* 2. 创建文档集合List
* 3. 将文档集合插入数据库集合中 mongoCollection.insertMany(List) 插入单个文档可以用 mongoCollection.insertOne(Document)
* */
double d_lanti_n = 3644.5000;
double d_longi_n = 00930.5000;
for(int i = 0;i<20000;i++){
Document dddd = new Document();
dddd.append("TIME", new Date());
dddd.append("LATI", "N");
dddd.append("LONGI", "E");
// double d_lanti_n = 3644.5000 + new Random().nextDouble()*(3650.0000-3644.5000);
d_lanti_n = d_lanti_n + 0.0009;
dddd.append("LATI_N", new DecimalFormat("0000.0000").format(d_lanti_n));
// double d_longi_n = 00930.5000 + new Random().nextDouble()*(00940.5000-00930.5000);
d_longi_n = d_longi_n + 0.001;
dddd.append("LONGI_N", new DecimalFormat("00000.0000").format(d_longi_n));
long c_cout = m_Collection.count();
dddd.append("_id", c_cout+1);
System.out.println(c_cout);
m_Collection.insertOne(dddd);
System.out.println("文档插入成功");
Thread.sleep(1000);
}
}catch(Exception e){
e.printStackTrace();
}
return false;
}
//测试建表
public boolean CreateTable(){
try{
m_DB.createCollection("vehile集合");
System.out.println("集合创建成功");
return true;
}catch(Exception e){
e.printStackTrace();
}
return false;
}
//测试变量
// private DataBaseOperationParameter m_DBOP;
//测试使用
// public void SetOperationParameter(DataBaseOperationParameter p_dbop){
// m_DBOP = p_dbop;
// }
}