使用 java ZA2F2ED4F8EBC2CBB4C21A29DC40AB6 將 spring 引導與 mongodb 連接

Question

我有這個結構

project  (module.pom)
- connection                     (module.jar)
      - src/main/java
            -com.mycompany.connection
                -connectionBD.class
      - ...
      - pom.xml
- person                         (module.jar)
      - src/main/java
            - com.mycompany.person
                -personApplication.class
            - com.mycompany.person.controller
                -...
            - com.mycompany.person.model
                -...
      - src/main/resources
      - ...
      - pom.xml
pom.xml

我的連接BD.class class 是這個。

@Configuration
public class connectionBD {

    @Bean
    public MongoDatabaseFactory mongoDatabaseFactory(){
        return new SimpleMongoClientDatabaseFactory("mongo://localhost:27017/lydsam");
    }

    @Bean
    public MongoTemplate mongoTemplate() {
        return new MongoTemplate(mongoDatabaseFactory());
    }
}

我的PersonApplication.class class 在另一個模塊中。

@SpringBootApplication(scanBasePackages = { "com.mycompany.person", "com.mycompany.connection" })
public class PersonApplication {

    public static void main(String[] args) {
        try {
            SpringApplication.run(PersonApplication.class, args);
        } catch (Exception e) {
            System.out.println("Error: "+ e.getMessage());
        }
    }
}

當我運行該項目時，我收到一條錯誤消息，提示我與數據庫的連接錯誤，我不知道問題出在哪里。 有人可以幫助我。

錯誤信息

nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoTemplate' defined in class path resource [com/mycompany/connection/connectionBD.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.core.MongoTemplate]: Factory method 'mongoTemplate' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoDatabaseFactory' defined in class path resource [com/mycompany/connection/connectionBD.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.MongoDatabaseFactory]: Factory method 'mongoDatabaseFactory' threw exception; nested exception is java.lang.IllegalArgumentException: The connection string is invalid. Connection strings must start with either 'mongodb://' or 'mongodb+srv://

Answer 1

連接字符串必須以 'mongodb://' 或 'mongodb+srv://' 開頭

你需要編輯。 mongo -> mongodb SimpleMongoClientDatabaseFactory

@Configuration
public class connectionBD {

    @Bean
    public MongoDatabaseFactory mongoDatabaseFactory(){
        return new SimpleMongoClientDatabaseFactory("mongodb://localhost:27017/lydsam");
    }
}