Shibboleth IdP v5.0.0 Upgrade: Issue with HttpServletRequest Bean Cast

[Noriyuki TAKEI]

Hi,all

In Shibboleth IdP v4.0.0, we defined the following Beans in the
configuration file:

```
<bean id="shibboleth.HttpServletRequest"
class="net.shibboleth.utilities.java.support.net.ThreadLocalHttpServletRequestProxy"
/>
<bean id="shibboleth.HttpServletResponse"
class="net.shibboleth.utilities.java.support.net.ThreadLocalHttpServletResponseProxy"
/>
```

Inside our custom Java code that we developed, we used the following line
to retrieve the HTTP request and it was working without any issues:

```
HttpServletRequest req = (HttpServletRequest)
context.getBean("shibboleth.HttpServletRequest");
```

Due to the specification changes in Shibboleth IdP v5.0.0, we defined the
following Beans in conf/global.xml:

```
<bean id="shibboleth.HttpServletRequest"
class="net.shibboleth.shared.servlet.impl.ThreadLocalHttpServletRequestSupplier"
/>
<bean id="shibboleth.HttpServletResponse"
class="net.shibboleth.shared.servlet.impl.ThreadLocalHttpServletResponseSupplier"
/>
```

Just as with Shibboleth IdP v4, we tried to retrieve the HTTP request using
the same code:

```
HttpServletRequest req = (HttpServletRequest)
context.getBean("shibboleth.HttpServletRequest");
```

However, we encountered the following error:

```
java.lang.ClassCastException: class
net.shibboleth.shared.servlet.impl.ThreadLocalHttpServletRequestSupplier
cannot be cast to class jakarta.servlet.http.HttpServletRequest
(net.shibboleth.shared.servlet.impl.ThreadLocalHttpServletRequestSupplier
is in unnamed module of loader org.eclipse.jetty.webapp.WebAppClassLoader
@ba54932; jakarta.servlet.http.HttpServletRequest is in unnamed module of
loader 'app')
```

Do you have any solutions to this problem?
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