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HomeJavajavaTutorialHow to integrate Filter in SpringBoot2

First define a Filter for unified access URL interception. The code is as follows:

public class UrlFilter implements Filter {
  private Logger log = LoggerFactory.getLogger(UrlFilter.class);
  @Override
  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
      throws IOException, ServletException {
  HttpServletRequest httpServletRequest = (HttpServletRequest) request;
    String requestURI = httpServletRequest.getRequestURI();
    StringBuffer requestURL = httpServletRequest.getRequestURL();
    log.info("requestURI:" +requestURI+" "+"requestURL:"+requestURL);
    chain.doFilter(httpServletRequest, response);
  }
}

Configure the SpringBoot filter chain class FilterRegistrationBean through javaConfig. The specific code is as follows:

@Configuration
public class FilterConfig {
  @Bean
  public FilterRegistrationBean filterRegistration() {
    FilterRegistrationBean registration = new FilterRegistrationBean();
    registration.setFilter(new UrlFilter());
    List<string> urlList = new ArrayList<string>();
    urlList.add("/*");
    registration.setUrlPatterns(urlList);
    registration.setName("UrlFilter");
    registration.setOrder(1);
    return registration;
  }
}</string></string>

FilterRegistrationBean method introduction:

  • registration.setFilter(Filter filter): Set our custom Filter object.

  • registration.setUrlPatterns(Collection urlPatterns): Set the collection of URLs that the custom Filter needs to intercept.

  • registration.setName(String name): Set the custom Filter name.

  • registration.setOrder(int order): Set the custom Filter interception order.

Test

Start the SpirngBoot project and access the index.html under our project through the browser.

How to integrate Filter in SpringBoot2

How to integrate Filter in SpringBoot2

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