缺少Jetty中的JSP支持,或者令人困惑的日志消息？

<Call name="addBean">
  <Arg>
    <New class="org.eclipse.jetty.jsp.JettyJspServlet">
      <Set name="logVerbosityLevel">DEBUG</Set>
      <Set name="fork">false</Set>
      <Set name="logFile">jetty-jsp.log</Set>
      <Set name="scratchdir"><SystemProperty name="java.io.tmpdir"/></Set>
      <Set name="maxLoadedJsps">100</Set>
    </New>
  </Arg>
</Call>

<dependency>
  <groupId>javax.servlet</groupId>
  <artifactId>javax.servlet-api</artifactId>
  <version>3.1.0</version>
  <scope>provided</scope>
</dependency>
<dependency>
  <groupId>javax.servlet.jsp</groupId>
  <artifactId>javax.servlet.jsp-api</artifactId>
  <version>2.3.1</version>
  <scope>provided</scope>
</dependency>
<dependency>
  <groupId>javax.servlet.jsp.jstl</groupId>
  <artifactId>javax.servlet.jsp.jstl-api</artifactId>
  <version>1.2.1</version>
  <scope>provided</scope>
</dependency>
<dependency>
  <groupId>org.eclipse.jetty</groupId>
  <artifactId>apache-jstl</artifactId>
  <version>9.4.43.v20210629</version>
</dependency>