强制HTTPS访问

Tomcat自动跳转

在tomcatconfweb.xml中的</welcome-file-list>后面加上这样一段：

<login-config>
<!-- Authorization setting for SSL -->
<auth-method>CLIENT-CERT</auth-method>
<realm-name>Client Cert Users-only Area</realm-name>
</login-config>
<security-constraint>
<!-- Authorization setting for SSL -->
<web-resource-collection >
<web-resource-name >SSL</web-resource-name>
<url-pattern>/*</url-pattern>
</web-resource-collection>
<user-data-constraint>
<transport-guarantee>CONFIDENTIAL</transport-guarantee>
</user-data-constraint>
</security-constraint>

在tomcatconfserver.xml中将http站点下配置的ssl端口改为和ssl配置端口（默认为443）一致：

<Connector port="80"
protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="443" />

Apache自动跳转

在需要跳转的http站点配置文件，<VirtualHost *:80> </VirtualHost>中间，添加重定向代码：

RewriteEngine on
RewriteCond %{SERVER_PORT} !^443$
RewriteRule ^.*$ https://%{SERVER_NAME}%{REQUEST_URI} [L,R]

Nginx自动跳转

在需要跳转的http站点配置文件中，添加如下第4行rewrite语句：

server {
listen 80;
server_name test.com;
rewrite ^(.*)$ https://$host$1 permanent;
}