在com中找不到MongoClient类。mongodb。SpringBoot提供的客户端包

Question

几个小时以来，我一直试图找到这个问题的解决方案，但无法自行解决。问题是我的Spring Boot Application需要一个MongoConfiguration类，该类应该创建一个MongoClient对象以供进一步使用以创建MongoTemboard对象，而且我似乎没有所需的依赖项。我很好奇Spring是否没有自动提供它，或者我做错了什么，但是每个关于如何创建mongoTemboard Bean的指南都说这很容易——“只需使用MongoClient对象blabla制作一个config类，它就准备好了！”但我甚至不能使用这个类。

Config类如下所示（编译器无法识别显示的导入）：

...
import com.mongodb.MongoClient;
import com.mongodb.client.*;
import com.mongodb.client.MongoClient;    
import com.mongodb.client.MongoClients;

@Configuration
public class MongoConfig extends AbstractMongoClientConfiguration {
@Override
protected String getDatabaseName() {
    return "pizzeria";
}

@Override
public MongoClient mongoClient() {
    ConnectionString connectionString = new ConnectionString("mongodb://localhost:27017/pizzeria");
    MongoClientSettings mongoClientSettings = MongoClientSettings.builder()
            .applyConnectionString(connectionString)
            .build();

    return MongoClients.create(mongoClientSettings);
}

@Override
public Collection getMappingBasePackages() {
    return Collections.singleton("pl.mvasio.pizzeria.data");
}
}

这是我的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>2.6.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>pl.mvasio</groupId>
    <artifactId>pizzeria</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>pizzeria</name>
    <description>Design and order your favorite pizza</description>
    <properties>
        <java.version>11</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</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.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-validation</artifactId>
        </dependency>

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

        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>runtime</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-mongodb</artifactId>
        </dependency>
<!--        <dependency>-->
<!--            <groupId>org.mongodb</groupId>-->
<!--            <artifactId>mongo-java-driver</artifactId>-->
<!--            <version>3.4.0</version>-->
<!--        </dependency>-->
<!--        <dependency>-->
<!--            <groupId>org.mongodb</groupId>-->
<!--            <artifactId>mongodb-driver-core</artifactId>-->
<!--            <version>3.4.0</version>-->
<!--        </dependency>-->
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

如您所见，我试图添加额外的依赖项-mongo java驱动程序，它帮助解决了这个问题，但不幸的是提供了另一个依赖项，因此我需要解决这个问题。如果有任何建议，我将不胜感激。

提前谢谢。

Answer 1

您可以通过应用程序直接连接到mongo。属性

<代码>Spring。数据mongodb。uri=mongodb://user:pwd@ip1：端口1，ip2：端口2/数据库

使用此依赖项：

<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-mongodb</artifactId>
    <version>3.0.3.RELEASE</version>
</dependency>

您还可以：

spring.data.mongodb.host=127.0.0.1
spring.data.mongodb.port=27017
spring.data.mongodb.authentication-database=admin
spring.data.mongodb.username=<username specified on MONGO_INITDB_ROOT_USERNAME>
spring.data.mongodb.password=<password specified on MONGO_INITDB_ROOT_PASSWORD>
spring.data.mongodb.database=<the db you want to use>

取决于你的司机。

你可以检查这个线程