创建证书

keytool -genkeypair -alias "tomcat" -keyalg "RSA" -keystore "localhost-rsa.jks"

后面的信息随便输入，我这里输入的是：

效果图

Enter keystore password: 

Re-enter new password: 

What is your first and last name?

 [Unknown]: pich

What is the name of your organizational unit?

 [Unknown]: pich

What is the name of your organization?

 [Unknown]: tomcat

What is the name of your City or Locality?

 [Unknown]: beijing

What is the name of your State or Province?

 [Unknown]: beijing

What is the two-letter country code for this unit?

 [Unknown]: cn

Is CN=pich, OU=pich, O=tomcat, L=beijing, ST=beijing, C=cn correct?

 [no]: y

Enter key password for <tomcat>

(RETURN if same as keystore password): 

Re-enter new password:

这样就会在当前目录创建一个localhost-rsa.jks文件。密码是123456，别名是tomcat。

给Tomcat配置证书

首先将上面生成的localhost-rsa.jks文件拷贝到Tomcat的conf目录，然后打开该目录下面的server.xml文件，找到如下代码，原来是注释了，现在需要打开注释更改为如下内容：

然后重新启动Tomcat，访问https://localhost:8443/

就可以看到如下页面：

<Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"

 SSLEnabled="true" maxThreads="150" scheme="https" secure="true"

 clientAuth="false" sslProtocol="TLS"

 keystoreFile="conf/localhost-rsa.jks" keystorePass="123456"

 /> 

可以看到地址栏是显示为不安全的。因为这个证书是我们自己制作的，浏览器默认不信任他，当然你可以手动信任他。