It's okay to mess with tomcat as a picture server. When the picture is uploaded to the picture server, it returns a 403 error
Scratched and checked the debug configuration file file path code logic without errors
Finally found that ... NM tomcat can not write by default
Solution:
Find tomcat's web.xml configuration file to add code
<servlet>
<servlet-name>default</servlet-name>
<servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<init-param>
<param-name>readonly</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>listings</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
