If you want to achieve this, start by configuring your web.xml to redirect requests for .js files to Spring instead of serving them directly.
Next, create a Request Handler using HandlerInterceptorAdapter to intercept requests and check for a key parameter. If the key is missing, display an alert message and do not allow further processing of the request chain.
You can also map static resources using:
<mvc:resources mapping="/api/**" location="/api-folder/"/>
To configure web.xml for all resources, set:
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>*</url-pattern>
</servlet-mapping>
For the HandlerInterceptor:
@Component
public class MyHandler extends HandlerInterceptorAdapter {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
String key=request.getParameter("key");
if(invalid) {
write alert to response
return false;
}else{
// let spring serve your static content
}
}
}
In the web context xml:
<mvc:interceptors>
<bean class="MyHandler " />
</mvc:interceptors>