# 2.1介绍

Java类的标准java.net.URL类和标准的URL前缀处理器是不足够的，他们没有低级别的资源访问的所有权限。例如，没有标准化的URL，来从classpath或者相关的ServletContext获取资源。

虽然可以为特定的URL注册 handlers ，但是这太复杂了，URL接口也缺少一些非常实用的功能，比如查看资源的指向等。


---

# Agent Instructions: 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://docs.flydean.com/spring-framework-documentation5/core-technologies/2.resources/2.1introduction.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.