Springboot集成MongoDB

最近學習MongoDB，看了很多博客和Demo。然后自己用maven搭建了一個SpringBoot集成mongodb的簡單Demo。希望大家提出意見，互相學習。

1.首先，安裝好mongodb服務

2.新建maven項目。

3.添加SpringBoot和Mongodb依賴。

<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連接本地mongodb。

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

5.編寫User.

public class User {
　　//id屬性是給mongodb用的，用@Id注解修飾
 @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.編寫User的Repository.

public interface UserRepository extends MongoRepository<User, String> {
    
    User findByName(String name);
}
7.編寫User的UserService接口和實現.

@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.編寫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插入數據，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查詢插入數據

10.條件查詢：http://localhost:8080/findByName?name=Tseng

Demo已經發布到Github上，地址:https://github.com/WunHwanTseng/github