spring boot(十一)：Spring boot中mongodb的使用

mongodb简介

　　传统的关系数据库一般由数据库（database）、表（table）、记录（record）三个层次概念组成，

　　MongoDB是由数据库（database）、集合（collection）、文档对象（document）三个层次组成。

mongodb使用

1、pom包配置

<dependencies>
    <dependency> 
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-mongodb</artifactId>
    </dependency> 
</dependencies>

2、在application.properties中添加配置

spring.data.mongodb.host=127.0.0.1
spring.data.mongodb.port=27017
spring.data.mongodb.username=root
spring.data.mongodb.password=123456
spring.data.mongodb.database=admin

或者

spring.data.mongodb.uri=mongodb://name:pass@localhost:27017/test

多个IP集群可以采用以下配置：

spring.data.mongodb.uri=mongodb://user:pwd@ip1:port1,ip2:port2/database

3、创建数据实体

package cn.cnki.ref.pojo;

import java.io.Serializable;

public class User implements Serializable {

    private int id;
    private String name;
    private String username;
    private int age;
    private String phone;
    private String email;
    //无参构造函数必须有，ORM框架调用的就是无参构造函数
    public User() {

    }
    public User(int id, String name, String username, int age, String phone, String email) {
        super();
        this.id = id;
        this.name = name;
        this.username = username;
        this.age = age;
        this.phone = phone;
        this.email = email;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public String getPhone() {
        return phone;
    }
    public void setPhone(String phone) {
        this.phone = phone;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }

    @Override
    public String toString() {
        return "User [> phone
                + ", email=" + email + "]";
    }
}

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