强制跳转HTTPS

在Web.xml里面配置如下代码,就可以实现输入：http://localhost:8080/projectName直接跳转到：https://localhost:8443/projectName/login.jsp

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1. <login-config>  
2.     <auth-method>CLIENT-CERT</auth-method>  
3.     <realm-name>Client Cert Users-only Area</realm-name>  
4. </login-config>  
5.   
6. <security-constraint>  
7.     <web-resource-collection>  
8.         <web-resource-name>SSL</web-resource-name>  
9.         <url-pattern>/*</url-pattern>  
10.     </web-resource-collection>  
11.     <user-data-constraint>  
12.         <transport-guarantee>CONFIDENTIAL</transport-guarantee>  
13.     </user-data-constraint>  
14. </security-constraint>