Tomcat学习与使用
一. Tomcat安装及配置
二.项目部署（虚拟目录映射）
Web应用开发好后，若想供外界访问，需要把web应用所在目录交给web服务器管理，这个过程称之为虚似目录的映射。
虚拟目录的映射方式一：在server.xml文件的host元素中配置（高版本Tomcat不建议用）
找到server.xml文件的host元素，如下图所示：
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" alt="" />
在<Host></Host>这对标签加上<Context path="/JavaWebApp" docBase="F:\JavaWebDemoProject" />即可将在F盘下的JavaWebDemoProject这个JavaWeb应用映射到JavaWebApp这个虚拟目录上，JavaWebApp这个虚拟目录是由Tomcat服务器管理的，JavaWebApp是一个硬盘上不存在的目录，是我们自己随便写的一个目录，也就是虚拟的一个目录，所以称之为"虚拟目录"，
<Context path="/JavaWebApp" docBase="F:\JavaWebDemoProject" />
其中，Context表示上下文，代表的就是一个JavaWeb应用，Context元素有两个属性，
Ⅰ.path：用来配置虚似目录，必须以"/"开头。
Ⅱ.docBase：配置此虚似目录对应着硬盘上的Web应用所在目录。
虚拟目录的映射方式二：让tomcat服务器自动映射
即将项目文件放到webapps下
虚拟目录的映射方式三：定义xml
在tomcat服务器的\conf\Catalina\localhost目录下新建一个xml文件，其名称就是context元素的path属性，
在xml文件中添加Context元素映射JavaWeb应用，代码如下：
1 <Context docBase="F:\JavaWebDemoProject" />
三.打包javaweb应用
在Java中，使用"jar"命令来对将JavaWeb应用打包成一个War包，jar命令的用法如下：
执行完之后，就可以得到一个aaarticlea/png;base64,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" alt="" />文件，平时开发完JavaWeb应用后，一般都会将JavaWeb应用打包成一个war包，然后将这个war包放到Tomcat服务器的webapps目录下，当Tomcat服务器启动时，就会自动将webapps目录下的war包解压。
比如现在将aaarticlea/png;base64,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" alt="" />放到放到Tomcat服务器的webapps目录下
Tomcat服务器启动后会自动"Deploying web application"，将aaarticlea/png;base64,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" alt="" />这个war文件解压缩，如下图所示：
aaarticlea/png;base64,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" alt="" />
四、Tomcat的体系结构
Tomcat服务器的启动是基于一个server.xml文件的
<?xml version='1.0' encoding='utf-8'?>
<Server port="8005" shutdown="SHUTDOWN"> //启动server
<Service name="Catalina"> //启动service
<Connector port="8080" protocol="HTTP/1.1" //多个Connector等待连接
connectionTimeout="20000"
redirectPort="8443" />
<Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol"
maxThreads="150" SSLEnabled="true" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS"
keystoreFile="conf/.keystore" keystorePass="123456"/>
<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
<Engine name="Catalina" defaultHost="localhost"> //将用户请求交给引擎处理 <Host name="localhost" appBase="webapps" //引擎解析出想访问的host后交其处理
unpackWARs="true" autoDeploy="true">
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
prefix="localhost_access_log." suffix=".txt"
pattern="%h %l %u %t "%r" %s %b" />
</Host>
<Host name="www.gacl.cn" appBase="F:\JavaWebApps"> //host解析出用户想访问的web应用，一个应用对应一个context
<Context path="" docBase="F:\JavaWebApps\JavaWebDemo1"/>
</Host> </Engine>
</Service>
</Server>
五.互联网上的加密原理
Tomcat的connector分为加密连接器http连接与非加密连接器https连接。默认8080端口为非加密连接器
拓展：对称加密与非对称加密，对称加密即加密解密使用相同的加密算法，非对称加密即加密解密密钥不同