Springboot集成MongoDB

最近学习MongoDB，看了很多博客和Demo。然后自己用maven搭建了一个SpringBoot集成mongodb的简单Demo。希望大家提出意见，互相学习。

1.首先，安装好mongodb服务

2.新建maven项目。

3.添加SpringBoot和Mongodb依赖。

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.1.RELEASE</version>
</parent>

 

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

<!-- springboot-web -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

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

4.在application.yml连接本地mongodb。

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

5.编写User.

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 +
                '}';
    }
}
6.编写User的Repository.

public interface UserRepository extends MongoRepository<User, String> {
    
    User findByName(String name);
}
7.编写User的UserService接口和实现.

@Repository
public interface UserService {
    void save(User user);

    User findByName(String name);

}

@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserRepository userRepository;

    public void save(User user) {
        userRepository.save(user);
    }

    public User findByName(String name) {
        return this.userRepository.findByName(name);
    }
}

8.编写Controller

@RestController
public class Controller {
    @Autowired
    private UserService userService;
    @Autowired
    private MongoTemplate mongoTemplate;

    /**
     * save use before findName
     * @return
     */
    @GetMapping("/save")
    public User save() {
        User user = new User(2, "Tseng", 21);
        mongoTemplate.save(user);
　　　　 //也可以使用Repository插入数据，userService.save(user);
        return user;
    }

    @GetMapping("/find")
    public List<User> find() {
        List<User> userList = mongoTemplate.findAll(User.class);
        return userList;
    }

    /**
     * input String name "Tseng"
     * @param name
     * @return
     */
    @GetMapping("/findByName")
    public User findByName(@RequestParam("name") String name) {
        User user = userService.findByName(name);        return user;    }}9，mongodb查询插入数据

10.条件查询：http://localhost:8080/findByName?name=Tseng

Demo已经发布到Github上，地址:https://github.com/WunHwanTseng/github