Your server side code is JAVA then Follow this below steps
step 1 : Download urlrewritefilter JAR Click Here and save to build path WEB-INF/lib
step 2 : Enable HTML5 Mode $locationProvider.html5Mode(true);
step 3 : set base URL <base href="/example.com/"/>
step 4 : copy and paste to your WEB.XML
<filter>
<filter-name>UrlRewriteFilter</filter-name>
<filter-class>org.tuckey.web.filters.urlrewrite.UrlRewriteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>UrlRewriteFilter</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
</filter-mapping>
step 5 : create file in WEN-INF/urlrewrite.xml
<urlrewrite default-match-type="wildcard">
<rule>
<from>/</from>
<to>/index.html</to>
</rule>
<!--Write every state dependent on your project url-->
<rule>
<from>/example</from>
<to>/index.html</to>
</rule>
</urlrewrite>