pom.xml：

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

application.properties：

#連線mongodb
spring.data.mongodb.uri=mongodb://127.0.0.1:27017/mydb
spring.data.mongodb.username=root
spring.data.mongodb.password=123456
 

實體類：

package com.example.demo.entity;

import org.springframework.data.mongodb.core.mapping.Document;

/**
 * @author FastKing
 * @version 1.0
 * @date 2018/11/5 15:57
 **/
@Document(collection="test")
public class Test {

	private String id;

	private String username;

	private String password;

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}
}
 

Controller：

@RestController
@RequestMapping("user")
public class UserController {
@Autowired
	private MongoTemplate mongoTemplate;

	@GetMapping("list")
	public Object list(){
		return mongoTemplate.findAll(Test.class);
	}

}