Ubuntu下安装mongodb及一些基本操作

Ubuntu版本

Ubuntukylin16.4

安装mongodb

首先设置Ubuntu的软件更新源为阿里云

然后执行以下命令 sudo apt-key adv –keyserver hkp://keyserver.ubuntu.com:80 –recv EA312927

echo “deb http://mirrors.aliyun.com/mongodb/apt/ubuntu xenial/mongodb-org/3.2 multiverse” | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list

sudo apt-get install -y mongodb-org

如果安装不成功，显示错误无法连接到repo.mongodb.org，可以通过命令，用以下内容覆盖，将更新源改为阿里云

sudo gedit /etc/apt/sources.list

deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse

并在系统的更新内设置，如下，只勾选阿里云的更新

重新执行安装命令。

测试mongodb

//启动 sudo service mongod start //查看是否启动 netstat -lanp | grep "27017"

操作mongodb

1.连接至mongodb数据库

//查看安装在哪个文件夹 which mongo //进入安装目录 连接至mongodb ./mongo

2.准备数据

//此时已连接至mongodb 声明数据对象 var students= [{ name:"jim", age:25, email:"75431457@qq.com", c:89,m:96,e:87, country:"USA", books:["JS","C++","EXTJS","MONGODB"] }, { name:"tom", age:25, email:"214557457@qq.com", c:75,m:66,e:97, country:"USA", books:["PHP","JAVA","EXTJS","C++"] }, { name:"lili", age:26, email:"344521457@qq.com", c:75,m:63,e:97, country:"USA", books:["JS","JAVA","C#","MONGODB"] }, { name:"zhangsan", age:27, email:"2145567457@qq.com", c:89,m:86,e:67, country:"China", books:["JS","JAVA","EXTJS","MONGODB"] }, { name:"lisi", age:26, email:"274521457@qq.com", c:53,m:96,e:83, country:"China", books:["JS","C#","PHP","MONGODB"] }, { name:"wangwu", age:27, email:"65621457@qq.com", c:45,m:65,e:99, country:"China", books:["JS","JAVA","C++","MONGODB"] }, { name:"zhaoliu", age:27, email:"214521457@qq.com", c:99,m:96,e:97, country:"China", books:["JS","JAVA","EXTJS","PHP"] }, { name:"piaoyingjun", age:26, email:"piaoyingjun@uspcat.com", c:39,m:54,e:53, country:"Korea", books:["JS","C#","EXTJS","MONGODB"] }, { name:"lizhenxian", age:27, email:"lizhenxian@uspcat.com", c:35,m:56,e:47, country:"Korea", books:["JS","JAVA","EXTJS","MONGODB"] }, { name:"lixiaoli", age:21, email:"lixiaoli@uspcat.com", c:36,m:86,e:32, country:"Korea", books:["JS","JAVA","PHP","MONGODB"] }, { name:"zhangsuying", age:22, email:"zhangsuying@uspcat.com", c:45,m:63,e:77, country:"Korea", books:["JS","JAVA","C#","MONGODB"] }] //插入数据到mongodb >for(var i=0;i<students.length;i++){db.students.insert(students[i]);}

3.查询数据

//查询所有学生 前面{}的为查询条件 后面的{}为查询字段 1为显示 0为不显示 db.students.find({},{name:1,email:1}) //查询age和name字段，条件是age>=25 和age < 27，同时不包括主键 Db.students.find({age:{$gte:25,$lt:27}},{_id:0,name:1,age:1}) //查询不是中国的学生 并将输出格式化 Db.students.find({country:{$ne:”china”}}).pretty() //查询国籍是中国或美国的学生: db.students.find({country:{$in:[“China”,”USA”]}}) //查询语文成绩>85或者英语成绩>90的学生: db.students.find({$or:[{c:{$gt:85}},{e:{$gt:90}}]}) //查询名字中存在”li”的学生信息: db.students.find({name:/li/}) //查询出喜欢看MONGODB和JS的学生: db.students.find({books:{$all:["JS","MONGODB"]}},{_id:0,name:1,books:1}).pretty() //查询出喜欢的书籍数量是4本的学生，限制返回3条数据: db.students.find({books:{$size:4}}).limit(3) //查询tom喜欢的2~4本书: 1,3为books数组下标 db.students.find({name:”tom”},{books:{$slice:[1,3]}}) //查询出student文档中第5~10条数据 db.students.find({},{_id:0,name:1}).limit(5).skip(5)