springboot干货——（十四【一】）整合mongodb

叁歲伎倆 2021-09-26 12:42 420阅读 0赞

mongodb这块我就不介绍了，不了解的小伙伴可以移步[mongodb教程][mongodb]

直接上项目

1.项目结构图如下：

![SouthEast][]

2.pom.xml如下

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    	<modelVersion>4.0.0</modelVersion>
    
    	<groupId>com.gwd</groupId>
    	<artifactId>springboot-mongodb</artifactId>
    	<version>0.0.1-SNAPSHOT</version>
    	<packaging>jar</packaging>
    
    	<name>springboot-mongodb</name>
    	<description>Demo project for springboot-mongodb</description>
    
    	<parent>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-parent</artifactId>
    		<version>1.5.10.RELEASE</version>
    		<relativePath/> 
    	</parent>
    
    	<properties>
    		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    		<java.version>1.8</java.version>
    	</properties>
    
    	<dependencies>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-data-mongodb</artifactId>
    		</dependency>
    
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-test</artifactId>
    			<scope>test</scope>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-web</artifactId>
    		</dependency>
    	</dependencies>
    
    	<build>
    		<plugins>
    			<plugin>
    				<groupId>org.springframework.boot</groupId>
    				<artifactId>spring-boot-maven-plugin</artifactId>
    			</plugin>
    		</plugins>
    	</build>
    </project>

3.application.properties

有密码的如下：

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

name对应用户名,pass对应密码

没有密码的如下：

spring.data.mongodb.uri=mongodb://localhost:27017/test

4.model层

User:

public class User {
    	@Id
        private Long id;
    
        private String username;
        private Integer age;
        public Long getId() {
    		return id;
    	}
    
    	public void setId(Long id) {
    		this.id = id;
    	}
    
    	public String getUsername() {
    		return username;
    	}
    
    	public void setUsername(String username) {
    		this.username = username;
    	}
    
    	public Integer getAge() {
    		return age;
    	}
    
    	public void setAge(Integer age) {
    		this.age = age;
    	}
    
    	public User(Long id, String username, Integer age) {
            this.id = id;
            this.username = username;
            this.age = age;
        }
    }

5.Repository

UserRepository:

public interface UserRepository extends MongoRepository<User, Long>{
    	
    	User findByUsername(String username);
    }

6.Controller

package com.gwd.controller;
    /** 
    * @FileName TestController.java
    * @Description:TODO
    * @author JackHisen(gu.weidong)
    * @version V1.0
    * @createtime 2018年2月23日 下午5:02:05 
    * 修改历史：
    * 时间           作者          版本        描述
    *====================================================  
    *
    */
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    import com.gwd.model.User;
    import com.gwd.repository.UserRepository;
    
    @RestController
    public class TestController {
    	@Autowired
    	private UserRepository userRepository;
    	
    	@RequestMapping("/testMongodb")
    	public String testMongodb() {
    		// 创建三个User，并验证User总数
    		userRepository.save(new User(1L, "didi", 30));
    		userRepository.save(new User(2L, "mama", 40));
    		userRepository.save(new User(3L, "kaka", 50));
    		System.out.println(userRepository.findAll().size());
    
    		// 删除一个User，再验证User总数
    		User u = userRepository.findOne(1L);
    		userRepository.delete(u);
    		System.out.println(userRepository.findAll().size());
    
    		// 删除一个User，再验证User总数
    		u = userRepository.findByUsername("mama");
    		userRepository.delete(u);
    		System.out.println(userRepository.findAll().size());
    		return userRepository.findByUsername("kaka").getUsername();
    	}
    }

7.测试

![SouthEast 1][]

![SouthEast 2][]

[mongodb]: http://www.runoob.com/mongodb/mongodb-tutorial.html
[SouthEast]: /images/20210923/80748b35e3d64fcdb3ff6efe900e62d0.png
[SouthEast 1]: /images/20210923/9266192e9e7041fc92b562b9b537bad6.png
[SouthEast 2]: /images/20210923/c8646f87842046afb944dac1fbca17b8.png