> For the complete documentation index, see [llms.txt](https://jack80342.gitbook.io/spring-boot/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://jack80342.gitbook.io/spring-boot/iv.-spring-boot-features/30.-working-with-nosql-technologies/30.3-neo4j/30.3.1-connecting-to-a-neo4j-database.md).

# 30.3.1 连接Neo4j数据库

你可以注入一个自动配置的`Neo4jSession`，`Session`，或`Neo4jOperations`实例，就像使用其他Spring Bean那样。该实例默认使用`localhost:7474`连接Neo4j服务器。下面的例子展示了怎么样注入一个Neo4j bean：

```java
@Component
public class MyBean {

    private final Neo4jTemplate neo4jTemplate;

    @Autowired
    public MyBean(Neo4jTemplate neo4jTemplate) {
        this.neo4jTemplate = neo4jTemplate;
    }

    // ...

}
```

添加自己的`org.neo4j.ogm.config.Configuration` `@Bean`，你就能完全控制该配置了。同时，添加一个`Neo4jOperations`类型的`@Bean`可以禁用自动配置。

通过`spring.data.neo4j.*`属性可以配置使用的用户和凭证，如下所示：

```
spring.data.neo4j.uri=http://my-server:7474
spring.data.neo4j.username=neo4j
spring.data.neo4j.password=secret
```


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