Jetty和Tomcat性能方面差异不大

(1)Jetty可以同时处理大量连接而且可以长时间保持连接，适合于web聊天应用等等。

(2)Jetty的架构简单，因此作为服务器，Jetty可以按需加载组件，减少不需要的组件，减少了服务器内存开销，从而提高服务器性能。

(3)Jetty默认采用NIO(非阻塞IO)结束在处理I/O请求上更占优势，在处理静态资源时，性能较高。

Servlet规范支持方面

(1)Jetty的应用更加快速，修改简单，对新的Servlet规范的支持较好。 GAE(谷歌应用引擎已经全面切换为Jetty)

(2)Tomcat目前应用比较广泛，对JavaEE和Servlet的支持更加全面，很多特性会直接集成进来。(中小企业还再在用)

导包 spring-boot-starter-jetty，并排除spring-boot-starter-web里面的spring-boot-starter-tomcat。

org.springframework.boot

spring-boot-starter-web

org.springframework.boot

spring-boot-starter-tomcat

org.springframework.boot

spring-boot-starter-jetty

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Jetty的支持

@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);

}

...

}

常用配置

server.port=8080

server.servlet.context-path=/

server.jetty.thread-idle-timeout=60000

server.jetty.connection-idle-timeout=30000

server.jetty.max-http-form-post-size=1000

server.jetty.max-threads=200

server.jetty.min-threads=10

server.jetty.acceptors=-1

server.jetty.selectors=-1

server.jetty.accesslog.enabled=true

server.jetty.accesslog.append=true

server.jetty.accesslog.retention-period=20

server.jetty.accesslog.file-date-format=.yyyy-MM-dd

server.jetty.accesslog.filename= D:/logs/access_log.yyyy_MM_dd.log

配置https访问

server.ssl.port=8443

server.ssl.enabled=true

server.ssl.key-store=D:/ssl.keystore

server.ssl.key-store-password=0123789

server.ssl.key-store-type=PKCS12

server.ssl.key-alias=ssl_alias

@Value("${server.ssl.key-store:classpath:ssl.keystore}")

private String path;

@Value("${server.ssl.key-store-password:123456}")

private String password;

@Value("${server.port:8443}")

private int port;

@Value("${server.ssl.port:8443}")

private int sslPort;

@Value("${server.jetty.thread-idle-timeout:60000}")

private int timeout;

@Value("${server.jetty.max-threads:200}")

private int maxThreads;

@Value("${server.jetty.max-threads:10}")

private int minThreads;

@Bean

public ServletWebServerFactory servletContainer() {

JettyServletWebServerFactory container = new JettyServletWebServerFactory();

container.addServerCustomizers((Server server) -> {

//配置线程

final QueuedThreadPool threadPool = server.getBean(QueuedThreadPool.class);

//默认最大线程连接数

threadPool.setMaxThreads(maxThreads);

//默认最小线程连接数

threadPool.setMinThreads(minThreads);

//默认线程最大空闲时间60000ms

threadPool.setIdleTimeout(timeout);

// 添加HTTP配置

ServerConnector connector = new ServerConnector(server);

connector.setPort(port);

// 添加HTTPS配置

SslContextFactory sslContextFactory = new SslContextFactory();

sslContextFactory.setKeyStorePath(path);

sslContextFactory.setKeyStorePassword(password);

HttpConfiguration config = new HttpConfiguration();

config.setSecureScheme(HttpScheme.HTTPS.asString());

config.addCustomizer(new SecureRequestCustomizer());

ServerConnector sslConnector = new ServerConnector(

server,

new SslConnectionFactory(sslContextFactory, HttpVersion.HTTP_1_1.asString()),

new HttpConnectionFactory(config));

sslConnector.setPort(sslPort);

server.setConnectors(new Connector[]{connector, sslConnector});

});

return container;

}