修改 tomcat 的點選劫持漏洞

一、修改 tomcat 的 web.xml 配置檔案

修改web伺服器配置，新增X-Frame-Options響應頭。賦值有如下三種：
1、DENY：不能被嵌入到任何iframe或者frame中
2、SAMEORIGIN:頁面只能被本站頁面嵌入到iframe或者frame中
3、ALLOW-FROM Uri：只能被嵌入到指定域名的框架中

<filter>
    <filter-name>httpHeaderSecurity</filter-name>
    <filter-class>org.apache.catalina.filters.HttpHeaderSecurityFilter</filter
 
-class>
    <init-param>
        <param-name>antiClickJackingEnabled</param-name>
        <param-value>true</param-value>
    </init-param>
    <init-param>
        <param-name>antiClickJackingOption</param-name>
        <param-value>SAMEORIGIN</param
 
-value>
    </init-param>
    <async-supported>true</async-supported>
</filter>
<filter-mapping>
    <filter-name>httpHeaderSecurity</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>