检查此页面配置JSP引擎参数。应通过以下方式指定：

 <enable-file-serving value="false"/>

不是<jsp-attribute>元素。

这是来自文档的示例：

<?xml version="1.0" encoding="UTF-8"?>
<web-ext
   xmlns="http://websphere.ibm.com/xml/ns/javaee"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://websphere.ibm.com/xml/ns/javaee http://websphere.ibm.com/xml/ns/javaee/ibm-web-ext_1_0.xsd"
      version="1.0">

   <default-error-page uri="error.jsp"/>
   <jsp-attribute name="useThreadTagPool" value="true" />
   <jsp-attribute name="verbose" value="false" />
   <jsp-attribute name="deprecation" value="false" />
   <jsp-attribute name="reloadEnabled" value="true" />
   <jsp-attribute name="reloadInterval" value="5" />
   <jsp-attribute name="keepgenerated"  value="true" />
   <jsp-attribute name="trackDependencies" value="true" />
   <reload-interval value="9"/>
   <auto-encode-requests value="true"/>
   <auto-encode-responses value="false"/>
   <enable-directory-browsing value="false"/>
   <enable-file-serving value="false"/>
   <pre-compile-jsps value="false"/>
   <enable-reloading value="true"/>
   <enable-serving-servlets-by-class-name value="true"/>
</web-ext>