配置嵌入式Servlet容器

如何定制和修改Servlet容器的相关配置

1. 修改定制和修改Servlet容器的相关配置

server.port=8081
server.context-path=/crud

server.tomcat.uri-encoding=UTF-8

//通用的Servlet容器设置
server.xxx
//Tomcat的设置
server.tomcat.xxx

编写一个EmbeddedServletContainerCustomizer，2.0以后改为WebServerFactoryCustomizer：嵌入式的Servlet容器的定制器；来修改Servlet容器的配置 

@Configuration
public class MyMvcConfig implements WebMvcConfigurer {
    @Bean
    public WebServerFactoryCustomizer webServerFactoryCustomizer() {
        return new WebServerFactoryCustomizer<ConfigurableWebServerFactory>() {
            @Override
            public void customize(ConfigurableWebServerFactory factory) {
                factory.setPort(8088);
            }
        };
    }
......

注册Servlet三大组件

 由于SpringBoot默认是以jar包的方式启动嵌入式的Servlet容器来启动SpringBoot的web应用，没有web.xml文件

Servlet

向容器中添加ServletRegistrationBean

@Configuration
public class MyMvcConfig implements WebMvcConfigurer {

    @Bean
    public ServletRegistrationBean myServlet() {
        ServletRegistrationBean register = new ServletRegistrationBean(new MyServlet(), "/myServlet");
        register.setLoadOnStartup(1);
        return register;
    }
    ......

Filter

@Configuration
public class MyMvcConfig implements WebMvcConfigurer {


    @Bean
    public FilterRegistrationBean myFilter() {
        FilterRegistrationBean register = new FilterRegistrationBean(new MyFilter());
        register.setUrlPatterns(Arrays.asList("/myServlet","/"));
        return register;
    }

    ......

Listener

@Configuration
public class MyMvcConfig implements WebMvcConfigurer {

    @Bean
    public ServletListenerRegistrationBean myServletContextListener(){
        return new ServletListenerRegistrationBean(new MyServletContextListener());
    }

    ......