无法将 Spring Boot 与 MongoDb 连接
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【中文标题】无法将 Spring Boot 与 MongoDb 连接【英文标题】：Can't connect Spring boot with MongoDb 【发布时间】：2021-06-06 02:19:53 【问题描述】：我正在尝试在 Spring Boot 2.3.9 中使用 Spring Boot 与 MongoDB 一起制作一个简单的程序 从启动日志中我怀疑有问题，好像初始化了两次。
这是我的控制台输出：
2021-03-08 01:54:43.515 INFO 26609 --- [ restartedMain] c.a.a.r.SpringbootRegistroApplication : Starting SpringbootRegistroApplication on santiagoVB with PID 26609 (/home/santiago/Documentos/workspace/springboot-registro/target/classes started by santiago in /home/santiago/Documentos/workspace/springboot-registro)
2021-03-08 01:54:43.521 INFO 26609 --- [ restartedMain] c.a.a.r.SpringbootRegistroApplication : No active profile set, falling back to default profiles: default
2021-03-08 01:54:43.680 INFO 26609 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2021-03-08 01:54:43.682 INFO 26609 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2021-03-08 01:54:45.719 INFO 26609 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data MongoDB repositories in DEFAULT mode.
2021-03-08 01:54:45.895 INFO 26609 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 167ms. Found 1 MongoDB repository interfaces.
2021-03-08 01:54:46.683 INFO 26609 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2021-03-08 01:54:46.699 INFO 26609 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2021-03-08 01:54:46.701 INFO 26609 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.43]
2021-03-08 01:54:46.830 INFO 26609 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2021-03-08 01:54:46.830 INFO 26609 --- [ restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 3147 ms
2021-03-08 01:54:47.152 INFO 26609 --- [ restartedMain] org.mongodb.driver.cluster : Cluster created with settings hosts=[localhost:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms'
2021-03-08 01:54:47.363 INFO 26609 --- [localhost:27017] org.mongodb.driver.connection : Opened connection [connectionIdlocalValue:1, serverValue:12] to localhost:27017
2021-03-08 01:54:47.372 INFO 26609 --- [localhost:27017] org.mongodb.driver.cluster : Monitor thread successfully connected to server with description ServerDescriptionaddress=localhost:27017, type=STANDALONE, state=CONNECTED, ok=true, minWireVersion=0, maxWireVersion=9, maxDocumentSize=16777216, logicalSessionTimeoutMinutes=30, roundTripTimeNanos=5581801
2021-03-08 01:54:47.714 INFO 26609 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2021-03-08 01:54:48.326 INFO 26609 --- [ restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2021-03-08 01:54:48.685 INFO 26609 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2021-03-08 01:54:48.701 INFO 26609 --- [ restartedMain] c.a.a.r.SpringbootRegistroApplication : Started SpringbootRegistroApplication in 6.21 seconds (JVM running for 9.239)
我的 pom.xml：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.9.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.appcity.app.registro</groupId>
<artifactId>springboot-registro</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springboot-registro</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>15</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
我的 application.properties：
spring.data.mongodb.uri=mongodb://localhost:27017/App
spring.data.mongodb.auto-index-creation=true
#spring.data.mongodb.host=localhost
#spring.data.mongodb.port=27017
#spring.data.mongodb.username=Udea
#spring.data.mongodb.password=udeapp
#spring.data.mongodb.database=App
我的对象：
package com.appcity.app.registro.models.entity;
import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;
@Document(collection = "UsuarioDb")
public class UsuarioDb
@Id
private String id;
private String username;
private String phone;
private String email;
private String password;
public UsuarioDb()
super();
public UsuarioDb(String id, String username, String phone, String email, String password)
super();
this.id = id;
this.username = username;
this.phone = phone;
this.email = email;
this.password = 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 getPhone()
return phone;
public void setPhone(String phone)
this.phone = phone;
public String getEmail()
return email;
public void setEmail(String email)
this.email = email;
public String getPassword()
return password;
public void setPassword(String password)
this.password = password;
@Override
public String toString()
return "UsuarioDb [id=" + id + ", username=" + username + ", phone=" + phone + ", email=" + email
+ ", password=" + password + "]";
我的界面：
package com.appcity.app.registro.models.dao;
import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.stereotype.Repository;
import com.appcity.app.registro.models.entity.UsuarioDb;
@Repository
public interface RegistroDao extends MongoRepository<UsuarioDb, String>
我的控制器：
package com.appcity.app.registro.controllers;
import java.util.List;
import java.util.Optional;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import com.appcity.app.registro.models.dao.RegistroDao;
import com.appcity.app.registro.models.entity.UsuarioDb;
//@CrossOrigin
@RestController
public class RegistroController
@Autowired
private RegistroDao repository;
@PostMapping("/registro/crear")
public String saveUsuarioDb(@RequestBody UsuarioDb usuarioDb)
repository.save(usuarioDb);
return "Added usuarioDb with id : " + usuarioDb.getId();
@GetMapping("/registro/listar")
public List<UsuarioDb> getUsers()
return repository.findAll();
@GetMapping("/registro/listar/id")
public Optional<UsuarioDb> getUser(@PathVariable String id)
return repository.findById(id);
@DeleteMapping("/registro/eliminar/id")
public String deleteUser(@PathVariable String id)
repository.deleteById(id);
return "usuarioDb deleted with id : "+id;
我在 Ubuntu 中的 MongoDb 状态：
● mongod.service - MongoDB Database Server
Loaded: loaded (/lib/systemd/system/mongod.service; enabled; vendor preset: enabled)
Active: active (running) since Mon 2021-03-08 00:30:58 -05; 1h 46min ago
Docs: https://docs.mongodb.org/manual
Main PID: 21445 (mongod)
Memory: 160.1M
CGroup: /system.slice/mongod.service
└─21445 /usr/bin/mongod --config /etc/mongod.conf
mar 08 00:30:58 santiagoVB systemd[1]: Started MongoDB Database Server.
我在 MongoDb 中的数据库：
show dbs
App 0.000GB
admin 0.000GB
config 0.000GB
local 0.000GB
我做错了什么？ 我有什么配置错误？
【问题讨论】：
为什么你认为没有连接？我在您的日志中看不到任何错误 因为映射到[/]的servlet dispatcherServlet 并且没有创建映射过滤器，所以我用postman做测试，程序运行但没有在mongo集合中创建任何文档 你得到什么http返回码？ 在RegistroController中添加ResponseStatus和Postman Return 201 Created 您是否可以使用 Spring Boot CommandLineRunner 中的存储库方法并查看任何结果？ 【参考方案1】：我遇到了类似的问题，我安装了不同的 JDK 补丁。我有 JDK 11.0.2，我将其更改为 JDK 11.0.10，它对我有用。
另外，您需要有 @CrossOrigin(origins = "*") 注释。 *（星号）表示您允许来自任何来源的请求。
【讨论】：
你能指定哪一个吗？ edit 提供所有相关信息的答案会有所帮助以上是关于无法将 Spring Boot 与 MongoDb 连接的主要内容，如果未能解决你的问题，请参考以下文章
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