SpringBoot整合Filter

方式與整合Servlet類似

• 方式一、通過方法註冊的形式
  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("進入filter");
      filterChain.doFilter(servletRequest,servletResponse);
      System.out.println("離開filter");
  }

  @Override
  public void destroy() {

  }
}

啟動類

@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、通過註解的方式，與整合Servlet一樣

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