title: Command Line Argument servlet.init-parameters.development=true has no effect in Spring Boot Application
body: <p>I run a Spring-Boot application (v2.7) via Eclipse Run configuration. In the <em>Program arguments</em> section, I pass the parameter</p>
  <pre><code>--server.jsp-servlet.init-parameters.development=true
  </code></pre>
  <p>But this doesn't seem to have any effect. When running the application, <code>pageContext.getServletConfig().getInitParameter(&quot;development&quot;)</code> returns <code>false</code>.</p>
  <p>There is no other location where the <code>init-parameters</code> property is set.</p>
  <p>What am I missing?</p>
  <p><strong>EDIT</strong>: when I set the parameter in (already existing) application.yaml it works.</p>
  <pre><code>server:
    servlet:
      jsp:
        init-parameters:
          development: true
  </code></pre>
  <p>But I need to set it via command line ...</p>