springboot集成mongodb简单demo

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1. 前提当然是有mongodb应用，安装可以参考之前写的一篇https://blog.csdn.net/u011890101/article/details/82698773
2. 创建springboot应用，添加依赖，这里使用data下的mongo包

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

3. 编写mongo实体

   public class User implements Serializable{
   
       @Id
       private String id;
   
       private String name;
   
       private int age;
   
       public String getId() {
           return id;
       }
   
       public void setId(String 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;
       }
       
   }

4. 测试demo

   @RestController
   @RequestMapping("api/user")
   public class UserController {
   
       @Autowired
       private MongoTemplate mongoTemplate;
   
       @PostMapping
       public String save() {
           User user = new User();
           user.setId("1");
           user.setName("guan");
           user.setAge(21);
           mongoTemplate.save(user);
           return "success";
       }
   
       @GetMapping
       public String get() {
           return mongoTemplate.findAll(User.class).get(0).getName();
       }
   
       @PutMapping
       public String update() {
           User user = new User();
           user.setId("1");
           user.setName("hahaguan");
           user.setAge(22);
           mongoTemplate.save(user);
           return "success";
       }
   }