MongoDB安装与Spring整合

     mongoDB是面向文档的非关系型数据库，数据模型是一种类似于JSON的结构，在数据库中存的是各种各样的jsON。官网下载地址：https://www.monGodb.com/download-center/enterprise

  一、以Centos为例，安装mongoDB

      1）下载安装包mongodb-linux-x86_64-rhel70-4.2.1.tgz，上传opt目录

      2）解压安装包  tar -zxvf   mongodb-linux-x86_64-rhel70-4.2.1.tgz 

      3）mv mongodb-linux-x86_64-rhel70-4.2.1/ /usr/local/mongodb

      4）在bin目录，新增mongodb.conf配置文件

dbpath = /data/db #数据文件存放目录，提前新建目录  
logpath = /data/logs/mongodb.log #日志文件存放目录，提前新建目录  
port = 27017  #端口
fork = true  #以守护程序的方式启用，即在后台运行
bind_ip=0.0.0.0    #允许所有的连接
auth=true #是否安全检验

　 5）运行服务

        ./mongod  --config mongodb.conf

   二、创建数据库与用户

   1）修改配置参数，重启服务

        auth=false #是否安全检验

   2）登录服务，创建应用数据库与用户

   2.1）切换数据库  use cmp;  创建用户 2.2）db.createUser({user:"cmp",pwd:"123456",roles:[{role:"dbAdmin",db:"cmp"},{role:"readWrite",db:"cmp"}]});

     3）使用NoSQLBooster客户端登录 

    三、spring整合MongoDB

        1）引入MongoDB的pom文件

  4.0.0
  com.demo
  springmongodb
  1.0-SNAPSHOT

  springmongodb
  Http://www.example.com

  
    UTF-8
    1.7
    1.7
  

  
    
      org.springframework.data
      spring-data-mongodb
      1.8.6.RELEASE
    
    
      org.springframework
      spring-test
      4.1.9.RELEASE
    
    
      org.slf4j
      slf4j-log4j12
      1.7.25
    
    
      junit
      junit
      4.12
      test
    
  

　　2）Spring配置文件

               mongodb.properties

mongodb.hostport=服务IP端口
mongodb.db=
mongodb.username=
mongodb.passWord=

　　       spring-mongodb.xml

　　3）编码

          3.1实体类 

package com.demo.bean;

import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.index.Indexed;
import org.springframework.data.mongodb.core.mapping.Document;


@Document(collection = "user")
public class User {

    @Indexed(unique = false)
    @Id
    private String uuid;

    private String name;

    private String age;

    public String getUuid() {
        return uuid;
    }

    public void setUuid(String uuid) {
        this.uuid = uuid;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getAge() {
        return age;
    }

    public void setAge(String age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "User{" +
                "uuid="" + uuid + """ +
                ", name="" + name + """ +
                ", age="" + age + """ +
                "}";
    }
}

 　  　3.2 数据层

package com.demo.service;

import com.itep.bean.Page;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.stereotype.Service;

import java.util.List;


@Service("mongoDBService")
public class MongoDBServiceImpl implements IMongoDBService{

    @Autowired
    private MongoTemplate mongoTemplate;

    @Override
    public  T findById(Class entityClass , String id) {
        return this.mongoTemplate.findById ( id,entityClass );
    }

    @Override
    public  List findAll(Class entityClass) {
        return this.mongoTemplate.findAll ( entityClass );
    }

    @Override
    public void remove(Object obj) {
        this.mongoTemplate.remove ( obj );
    }

    @Override
    public void add(Object obj) {
        this.mongoTemplate.insert ( obj );
    }

    @Override
    public void saveOrUpdate(Object obj) {
        this.mongoTemplate.save ( obj );
    }

    @Override
    public  Long count(Class entityClass , Query query) {
        return this.mongoTemplate.count ( query,entityClass );
    }

    @Override
    public  List findByQuery(Class entityClass , Query query , Page page) {
        Long count = this.count ( entityClass,query );
        if(page != null){
             page.setRecordCount ( count.intValue () );
             int pageNumber = page.getCurrentPage ();
             int pageSize = page.getPageSize ();
             query.skip ( (pageNumber-1) * pageSize).limit ( pageSize );
        }
        return this.mongoTemplate.find ( query,entityClass );
    }
}

package com.demo.service;

import com.itep.bean.Page;
import org.springframework.data.mongodb.core.query.Query;

import java.util.List;


public interface IMongoDBService {

     T findById(Class entityClass,String id);

     List findAll(Class entityClass);

    void remove(Object obj);

    void add(Object obj);

    void saveOrUpdate(Object obj);

     Long count(Class entityClass, Query query);

     List findByQuery(Class entityClass, Query query, Page page);

}

         3.3 单元测试

package com.demo;

import com.itep.bean.User;
import com.itep.service.IMongoDBService;
import com.itep.service.UserService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import java.util.List;
import java.util.UUID;

@RunWith (SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations ="classpath:spring-mongodb.xml")
public class AppTest 
{

    @Autowired
    private IMongoDBService mongoDBService;

    @Test
    public void query(){

        Query query = new Query (  );
        query.addCriteria ( Criteria.where ( "age" ).is ( "21" ) );
        query.with ( new Sort ( new Sort.Order ( Sort.Direction.ASC ,"name") ) );
        List byQuery = mongoDBService.findByQuery ( User.class , query , null );
        System.out.println ("..." + byQuery);
        mongoDBService.findByQuery ( User.class , query , null );
    }
 
    @Test
    public  void  insert(){
       User user = new User();
       String uuid = UUID.randomUUID ().toString ().replace ( "-","" );
       System.out.println ("uuid:" + uuid);
       user.setName ( "mongodb" );
       user.setUuid ( uuid );
       user.setAge ( "21" );
       mongoDBService.add ( user );
       System.out.println ("执行成功");
    }

}