<welcome-file-list>
<welcome-file>index.jhtml</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<mime-mapping>
<extension>htm</extension>
<mime-type>text/html;charset=utf-8</mime-type>
</mime-mapping>
<mime-mapping>
<extension>html</extension>
<mime-type>text/html;charset=utf-8</mime-type>
</mime-mapping>
</web-app>
如上，如果在HTML頁面設置了utf-8編碼，並且頁面文件設為utf-8仍未解決亂碼問題，則可在web項目下的web.xml文件添加配置
<mime-mapping>
<extension>htm</extension>
<mime-type>text/html;charset=utf-8</mime-type>
</mime-mapping>
<mime-mapping>
<extension>html</extension>
<mime-type>text/html;charset=utf-8</mime-type>
</mime-mapping>
即可解決亂碼問題！