How to integrate Filter in SpringBoot2

This article mainly introduces "how to integrate Filter in SpringBoot2". In daily operation, I believe many people have doubts about how to integrate Filter in SpringBoot2. Xiaobian consulted various materials and sorted out simple and easy operation methods. I hope to help you answer the doubts of "how to integrate Filter in SpringBoot2"! Next, please follow the small series to learn together!

First, define a Filter that intercepts URLs uniformly. 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 by javaConfig. The specific code is as follows:

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

FilterRegistrationBean method description:

registration.setFilter(Filter filter): Sets our custom Filter object.

registration.setUrlPatterns(Collection urlPatterns): Sets the collection of URLs that the custom Filter needs to block.

registration.setName(String name): Sets a custom Filter name.

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

test

Start SpirngBoot project and visit index.html under our project via the browser.

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