配置 Tomcat

1.实现EmbeddedServletContainerCustomizer接口，并把实现的类纳入到Spring容器中管理

@Component
public class MyEmbeddedServletContainerCustomizer implements EmbeddedServletContainerCustomizer {
    public void customize(ConfigurableEmbeddedServletContainer arg0) {
        TomcatEmbeddedServletContainerFactory factory = (TomcatEmbeddedServletContainerFactory) arg0;
        factory.setPort(10003);
        factory.setBaseDirectory(new File("E:\\WorkSpace\\WS_Eclipse\\springboot\\tomcat"));
        factory.addContextValves(getAccessLogValve());   // 设置日志
        factory.addInitializers((servletContext) -> {    // 初始化
        System.out.println("=========servletContext   startup============");
        // servletContext.addListener(className);  // 添加监听器
        // servletContext.addFilter(filterName, filter);  // 添加过滤器
        servletContext.setAttribute("startup", "true");   // 可以设置全局变量
    });
    factory.addConnectorCustomizers(new MyTomcatConnectorCustomizer());  // 设置连接器
}

// 日志设置
private AccessLogValve getAccessLogValve() {
    AccessLogValve log = new AccessLogValve();
    log.setDirectory("E:\\WorkSpace\\WS_Eclipse\\springboot\\tomcat\\logs");
    log.setEnabled(true);
    log.setPattern("common");
    log.setPrefix("springboot-access-log");
    log.setSuffix(".txt");
    return log;
}
}

// 连接器
class MyTomcatConnectorCustomizer implements TomcatConnectorCustomizer {
    public void customize(Connector arg0) {
        Http11NioProtocol protocol = (Http11NioProtocol) arg0.getProtocolHandler();
        protocol.setMaxConnections(2000); // 最大连接数
        protocol.setMaxThreads(500);  // 最大线程数
    }
}

2.再spring容器中装配一个EmbeddedServletContainerFactory对象。

@SpringBootConfiguration
public class WebServerConfiguration {
    @Bean
    public EmbeddedServletContainerFactory createEmbeddedServletContainerFactory() {
        TomcatEmbeddedServletContainerFactory factory = new TomcatEmbeddedServletContainerFactory();
        factory.setPort(10003);
        factory.addErrorPages(new ErrorPage(HttpStatus.NOT_FOUND, "/error/404.html"));
        factory.addInitializers((servletContext) -> {
            System.out.println("=========servletContext   startup============");
            servletContext.setAttribute("startup", "true"); // 可以设置全局变量
        });
        factory.addContextValves(getAccessLogValve());
        return factory;
    }

    // 日志设置
    private AccessLogValve getAccessLogValve() {
        AccessLogValve log = new AccessLogValve();
        log.setDirectory("E:\\WorkSpace\\WS_Eclipse\\springboot\\tomcat\\logs");
        log.setEnabled(true);
        log.setPattern("common");
        log.setPrefix("springboot-access-log");
        log.setSuffix(".txt");
        return log;
    }
}