> For the complete documentation index, see [llms.txt](https://doc.shiker.tech/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.shiker.tech/spring-he-xin-gong-neng/10.-fu-lu/10.2.-zi-ding-yi-xml-schema/10.2.5.-zai-spring-xml-pei-zhi-zhong-shi-yong-zi-ding-yi-kuo-zhan.md).

# 10.2.5. 在 Spring XML 配置中使用自定义扩展

使用您自己实现的自定义扩展与使用 Spring 提供的“自定义”扩展之一没有什么不同。以下示例在 Spring XML 配置文件中使用前面步骤中开发的自定义`<dateformat/>`元素：

```xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:myns="http://www.mycompany.example/schema/myns"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.mycompany.example/schema/myns http://www.mycompany.com/schema/myns/myns.xsd">

    <!-- as a top-level bean -->
    <myns:dateformat id="defaultDateFormat" pattern="yyyy-MM-dd HH:mm" lenient="true"/> 

    <bean id="jobDetailTemplate" abstract="true">
        <property name="dateFormat">
            <!-- as an inner bean -->
            <myns:dateformat pattern="HH:mm MM-dd-yyyy"/>
        </property>
    </bean>

</beans>
```


---

# 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, and the optional `goal` query parameter:

```
GET https://doc.shiker.tech/spring-he-xin-gong-neng/10.-fu-lu/10.2.-zi-ding-yi-xml-schema/10.2.5.-zai-spring-xml-pei-zhi-zhong-shi-yong-zi-ding-yi-kuo-zhan.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.