SpringBoot整合Filter

版权声明：XiangYida https://blog.csdn.net/qq_36781505/article/details/83855836

SpringBoot整合Filter

方式与整合Servlet类似

• 方式一、通过方法注册的形式
  filter

public class MyFilter implements Filter {
  @Override
  public void init(FilterConfig filterConfig) throws ServletException {

  }

  @Override
  public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
      System.out.println("进入filter");
      filterChain.doFilter(servletRequest,servletResponse);
      System.out.println("离开filter");
  }

  @Override
  public void destroy() {

  }
}

启动类

@SpringBootApplication
public class CrmApplication {
  public static void main(String[] args) {
      SpringApplication.run(CrmApplication.class, args);
  }

  @Bean
  public ServletRegistrationBean get(){
      ServletRegistrationBean bean=new ServletRegistrationBean(new MyServlet());
      bean.addUrlMappings("/second");
      return bean;
  }
  @Bean
  public FilterRegistrationBean getFilter(){
      FilterRegistrationBean bean=new FilterRegistrationBean(new MyFilter());
      bean.addUrlPatterns("/second");
      return bean;
  }
}

• 方式二、通过注解的方式，与整合Servlet一样

@WebFilter(filterName="MyFilter",urlPatterns="/first")