> 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/30.6-elasticsearch/30.6.1-connecting-to-elasticsearch-by-using-jest.md).

# 30.6.1 使用Jest连接Elasticsearch

如果添加`Jest`依赖，你可以注入一个自动配置的`JestClient`，默认目标为`http://localhost:9200/`。你也可以进一步配置该客户端，如下所示：

```
spring.elasticsearch.jest.uris=http://search.example.com:9200
spring.elasticsearch.jest.read-timeout=10000
spring.elasticsearch.jest.username=user
spring.elasticsearch.jest.password=secret
```

为了实现更高级的定制，你也可以注册任意数量的实现了`HttpClientConfigBuilderCustomizer`的bean。下面的例子调整了额外的HTTP设置。

```java
static class HttpSettingsCustomizer implements HttpClientConfigBuilderCustomizer {

    @Override
    public void customize(HttpClientConfig.Builder builder) {
        builder.maxTotalConnection(100).defaultMaxTotalConnectionPerRoute(5);
    }

}
```

定义一个`JestClient` bean以完全控制注册过程。


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://jack80342.gitbook.io/spring-boot/iv.-spring-boot-features/30.-working-with-nosql-technologies/30.6-elasticsearch/30.6.1-connecting-to-elasticsearch-by-using-jest.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.