Spring boot整合mongodb

素颜马尾好姑娘i 2022-04-14 06:10 252阅读 0赞

# Spring boot整合mongodb #

Github源码：[https://github.com/superRabbitMan/spring-boot-mongodb][https_github.com_superRabbitMan_spring-boot-mongodb]

本文基于spring-data-mongodb进行spring boot和mongodb的整合

## 引入依赖 ##

<dependencies>
       <dependency>
          <groupId>org.springframework.data</groupId>
          <artifactId>spring-data-mongodb</artifactId>
       </dependency>
       <dependency>
          <groupId>org.pegdown</groupId>
          <artifactId>pegdown</artifactId>
          <version>1.4.1</version>
       </dependency>
       <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-hateoas</artifactId>
       </dependency>
       <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-web</artifactId>
       </dependency>
       <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-annotations</artifactId>
       </dependency>
    
       <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-test</artifactId>
          <scope>test</scope>
       </dependency>
    </dependencies>

## 配置mongodb信息和创建bean ##

只需要基础的配置就可以了，其它详细配置信息可以参考官网的properties说明

# MongoDB\u914D\u7F6E
    mongo.host=172.16.94.138
    mongo.name=test
    mongo.port=27017

@Configuration
    @EnableMongoRepositories(basePackages = "com.example.dao")
    @PropertySource("classpath:application.properties")
    public class MongoConfig extends AbstractMongoConfiguration {
    
        @Autowired
        private Environment env;
    
        @Bean
        @Override
        public MongoClient mongoClient() {
            ServerAddress serverAddress = new ServerAddress(env.getRequiredProperty("mongo.host"));
            List<MongoCredential> credentials = new ArrayList<>();
            return new MongoClient(serverAddress, credentials);
        }
    
        @Override
        protected String getDatabaseName() {
            return env.getRequiredProperty("mongo.name");
        }
    }

## 创建实体类 ##

@Document(collection = "user")
    public class User {
    
        @Id
        private String userId;
    
        @NotNull
        @Indexed(unique = true)
        private String username;
    
        @NotNull
        private String password;
    
        @NotNull
        private String name;
    
        @NotNull
        private String email;
    
        @NotNull
        private Date registrationDate = new Date();
    
        public User(String userId, @NotNull String username, @NotNull String password, @NotNull String name, @NotNull String email, @NotNull Date registrationDate) {
            this.userId = userId;
            this.username = username;
            this.password = password;
            this.name = name;
            this.email = email;
            this.registrationDate = registrationDate;
        }
    
        //get set 省略
    }

## 创建dao层处理类 ##

MongoRepository类封装了很多基础的方法

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

## Spring boot启动类添加方法 ##

@RestController
    @SpringBootApplication
    public class SpringBootMongodbApplication {
    
       @Autowired
       private UserRepository userRepository;
    
       @RequestMapping(value = "/s")
       public String save() {
          User user = new User("1", "user", "123456789", "name", "email@126.com", new Date());
          userRepository.save(user);
          return "SUCCESS";
       }
    
       @RequestMapping(value = "/g")
       public List<User> get(String name) {
          return userRepository.findAll();
       }
    
       public static void main(String[] args) {
          SpringApplication.run(SpringBootMongodbApplication.class, args);
       }
    }

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[https_github.com_superRabbitMan_spring-boot-mongodb]: https://github.com/superRabbitMan/spring-boot-mongodb
[20190711001357188.jpg]: https://img-blog.csdnimg.cn/20190711001357188.jpg