1、创建证书钥匙库：

keytool -genkey -alias tomcat -keyalg RSA

缺省证书文件名为：.keystore

2、修改文件server.xml
  <Connector port="8443"
               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
               enableLookups="false" disableUploadTimeout="true"
               acceptCount="100" debug="0" scheme="https" secure="true"
               clientAuth="false"
      keystoreFile="C:\keystore\.keystore"
      keystorePass="netscape"
      sslProtocol="TLS" />

3、web.xml
<security-constraint>
    <web-resource-collection>
      <web-resource-name>Purchase</web-resource-name>
      <url-pattern>/ssl/*</url-pattern>
    </web-resource-collection>
    <auth-constraint>
      <role-name>registered-user</role-name>
    </auth-constraint>
    <user-data-constraint>
      <transport-guarantee>CONFIDENTIAL</transport-guarantee>
    </user-data-constraint>
  </security-constraint>
 
  <!-- Only users in the administrator role can access
       the delete-account.jsp page within the admin
       directory. -->
  <security-constraint>
    <web-resource-collection>
      <web-resource-name>Account Deletion</web-resource-name>
      <url-pattern>/admin/delete-account.jsp</url-pattern>
    </web-resource-collection>
    <auth-constraint>
      <role-name>administrator</role-name>
    </auth-constraint>
  </security-constraint>
 
  <!-- Tell the server to use form-based authentication. -->
  <login-config>
    <auth-method>FORM</auth-method>
    <form-login-config>
      <form-login-page>/admin/login.jsp</form-login-page>
      <form-error-page>/admin/login-error.jsp</form-error-page>
    </form-login-config>
  </login-config>
   
 
4、重启tomcat