After Maven jetty is started, you cannot modify the static file, js,css,html

Workaround:

1. Copy a webdefault.xml file from the Jetty jar package (which may be in a different location, some jetty-web)

2. Set the Usefilemappedbuffer in Webdefault.xml to false.

<init-param>
<param-name>usefilemappedbuffer</PARAM-NAME>  
  <param-value>false  </PARAM-VALUE>  
 </INIT-PARAM>  
  
 3. Place the Webdefault.xml file in the Pom sibling directory of the MAVEN Web 
 4. Modify the <configuration> properties in Maven, Add the following configuration in the properties 
  
 <WEBAPPCONFIG>  
  <contextpath>/meds</contextpath>  
  <defaultsdescriptor>webdefault.xml</defaultsdescriptor>  
 </WEBAPPCONFIG>  
 
 Note: Different versions of Jetty may not be the same configuration, may not be useful, The above configuration is useful in 9.4.1.v20170120, but may not be useful in other versions. 
     

The static file cannot be modified after Maven jetty is started, js,css,html