SpringBoot和Servlet

设置初始化参数

对应了web.xml 的context-param

@Service
public class ServletInitialize implements ServletContextInitializer {
    private String appkey = "12011554";//一个appkey就填一个，多个appkey使用英文逗号分割.
    private String name = "fff";
    @Override
    public void onStartup(ServletContext servletContext) {
        Assert.notNull(appkey, "appkey 不能为空");
        servletContext.setInitParameter("secret_app_key", name);
        servletContext.setInitParameter("groupdataid", appkey);
        servletContext.setInitParameter("call_back_class_name", SecretCallback.class.getName());
    }
}

设置Listener和Filter

@Configuration
public class WebConfig {
    @Bean
    public ServletListenerRegistrationBean<ZkclientListener> servletListenerRegistrationBean() {
        ServletListenerRegistrationBean<ZkclientListener> bean = new ServletListenerRegistrationBean<>(new ZkclientListener());
        bean.setEnabled(true);
        return bean;
    }
    //这是设置filter的一种方式
    @Bean
    public FilterRegistrationBean<LogbackContextFilter> logbackContextFilter() {
        FilterRegistrationBean<LogbackContextFilter> bean = new FilterRegistrationBean<>(new LogbackContextFilter());
        bean.setEnabled(true);
        bean.setUrlPatterns(Collections.singleton("/*"));
        return bean;
    }
}

设置filter的第二种方式

//使用ServletComponentScan注解扫描 @WebListener/@WebFilter等等
@ServletComponentScan("com.raycloud.operation.config")

@WebListener
@WebFilter(value = "/*", initParams = {
        @WebInitParam(name = "ignore", value = "/aa/**",
                description = "过滤路径描述")
})
public class SessionFilter implements Filter {
         @Override
    public void init(FilterConfig filterConfig) {
        //init
    }   
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        //biz
        chain.doFilter(request, response);
    }
    @Override
    public void destroy() {
    }
}