mongdb学习（二）spring-boot集成MongoDB

我就是我 2022-05-31 03:35 200阅读 0赞

一、配置pom.xml

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

二、修改application.properties配置文件

两种连接mondb的方式：

spring.data.mongodb.uri=mongodb://root:123456@10.2.15.60:27017/admin
    
    #spring.data.mongodb.host=10.2.15.60
    #spring.data.mongodb.port=27017
    #spring.data.mongodb.authentication-database=
    #spring.data.mongodb.database=test
    #spring.data.mongodb.username=
    #spring.data.mongodb.password=

三、添加java类

结构如图：

![SouthEast][]

bean类

package com.jz.springbootdemo.bean;
    
    import org.springframework.data.annotation.Id;
    
    public class User {
        //id属性是给mongodb用的，用@Id注解修饰
        @Id
        private Integer id;
        private String name;
        private int age;
    
        public User(Integer id, String name, int age) {
            this.id = id;
            this.name = name;
            this.age = age;
        }
    
        public Integer getId() {
            return id;
        }
    
        public void setId(Integer id) {
            this.id = id;
        }
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public int getAge() {
            return age;
        }
    
        public void setAge(int age) {
            this.age = age;
        }
    
        @Override
        public String toString() {
            return "User{" +
                    "id=" + id +
                    ", name='" + name + '\'' +
                    ", age=" + age +
                    '}';
        }
    }

dao类：

package com.jz.springbootdemo.dao;
    
    import com.jz.springbootdemo.bean.User;
    import org.springframework.data.mongodb.repository.MongoRepository;
    import org.springframework.stereotype.Repository;
    
    @Repository
    public interface UserRepository extends MongoRepository<User, String> {
    
        User findByName(String name);
    }

service类：

package com.jz.springbootdemo.service;
    
    import com.jz.springbootdemo.bean.User;
    
    public interface UserService {
    
        void save(User user);
    
        User findByName(String name);
    }

service接口中的实现类：

package com.jz.springbootdemo.service.impl;
    
    import com.jz.springbootdemo.bean.User;
    import com.jz.springbootdemo.dao.UserRepository;
    import com.jz.springbootdemo.service.UserService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Component;
    
    @Component
    public class UserServiceImpl implements UserService {
        @Autowired
        private UserRepository userRepository;
        @Override
        public void save(User user) {
            userRepository.save(user);
        }
    
        public User findByName(String name) {
            return this.userRepository.findByName(name);
        }
    }

启动类中添加扫描路径让注解生效：  
   
 ![SouthEast 1][]

四、部署启动tomcat服务器

注意：mongdb数据库中的服务器一定要关闭防火墙，不要像我一样到处找问题。

浏览器访问，如图则插入数据成功：

![SouthEast 2][]  
 mongdb中查看数据：

![SouthEast 3][]

[SouthEast]: /images/20220531/ef41f3f82b804b71b83a02a74b90f442.png
[SouthEast 1]: /images/20220531/4be0c7a8a0694b73b73fcf90b3eb01ff.png
[SouthEast 2]: /images/20220531/c52cb10a20364cb9b10d4c03029f9e6f.png
[SouthEast 3]: /images/20220531/1b10d00eda3b46f790a64799c04df2a3.png