1、tomcat服务器
Tomcat适合处理少数非常繁忙的链接，也就是说链接生命周期短的话，Tomcat的总体性能更高。 另外，Tomcat默认采用BIO（阻塞IO）处理I/O请求，在处理静态资源时，性能较差。
2、只导包spring-boot-starter-web即可，里面包含了spring-boot-starter-tomcat包。
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
3、在spring-boot-autoconfigure 这个jar中的org.springframework.boot.autoconfigure.web.servlet.ServletWebServerFactoryAutoConfiguration类中， 通过Import注解加入了 Tomcat的三种支持
@Configuration
@AutoConfigureOrder(Ordered.HIGHEST_PRECEDENCE)
@ConditionalOnClass(ServletRequest.class)
@ConditionalOnWebApplication(type = Type.SERVLET)
@EnableConfigurationProperties(ServerProperties.class)
@Import({ ServletWebServerFactoryAutoConfiguration.BeanPostProcessorsRegistrar.class,
ServletWebServerFactoryConfiguration.EmbeddedTomcat.class,
ServletWebServerFactoryConfiguration.EmbeddedJetty.class,
ServletWebServerFactoryConfiguration.EmbeddedUndertow.class })
public class ServletWebServerFactoryAutoConfiguration {
@Bean
public ServletWebServerFactoryCustomizer servletWebServerFactoryCustomizer(
ServerProperties serverProperties) {
return new ServletWebServerFactoryCustomizer(serverProperties);
}
@Bean
@ConditionalOnClass(name = "org.apache.catalina.startup.Tomcat")
public TomcatServletWebServerFactoryCustomizer tomcatServletWebServerFactoryCustomizer(
ServerProperties serverProperties) {
return new TomcatServletWebServerFactoryCustomizer(serverProperties);
}
...
}
4、常用配置
server.port=8080
server.servlet.context-path=/
server.tomcat.uri-encoding=UTF-8
# 最大工作线程数，默认200。（4核8g内存，线程数经验值800，操作系统做线程之间的切换调度是有系统开销的，所以不是越多越好。）
server.tomcat.max-threads=200
# 等待队列长度，默认100。
server.tomcat.accept-count=100
# 默认值是10000
server.tomcat.max-connections=10000
server.tomcat.max-http-form-post-size=10
# 最小工作空闲线程数，默认10。（适当增大一些，以便应对突然增长的访问量）
server.tomcat.min-spare-threads=100
server.tomcat.connection-timeout=3600
server.tomcat.accesslog.enabled=true
server.tomcat.accesslog.directory=D:/logs
#%t [%I] %a %r %s (%b Byte) (%T ms)
server.tomcat.accesslog.pattern=%t %a "%r" %s (%D ms)
5、配置https访问
server.ssl.port=8443
server.ssl.enabled=true
server.ssl.key-store=classpath:ssl.keystore
server.ssl.key-store-password=0123789
server.ssl.key-store-type=PKCS12
server.ssl.key-alias=ssl_alias
@Value("${server.port:8080}")
private int port;
@Value("${server.ssl.port:443}")
private int sslPort;
@Value("${server.servlet.context-path:/*}")
private String path;
@Bean
public ServletWebServerFactory servletContainer() {
TomcatServletWebServerFactory tomcat = new TomcatServletWebServerFactory(){
protected void postProcessContext(Context context) {
SecurityConstraint securityConstraint = new SecurityConstraint();
securityConstraint.setUserConstraint("CONFIDENTIAL");
SecurityCollection collection = new SecurityCollection();
collection.addPattern(path);
securityConstraint.addCollection(collection);
context.addConstraint(securityConstraint);
}
};
tomcat.addAdditionalTomcatConnectors(httpConnector());
return tomcat;
}
/**
* 使用代码配置http自动跳转https
* @return
*/
@Bean
public Connector httpConnector(){
Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
connector.setScheme("http");
connector.setPort(port);
connector.setSecure(false);
connector.setRedirectPort(sslPort);
return connector;
}