说明

使用OncePerRequestFilter过滤器，好处是入参直接为HttpServletRequest，无需转换。

样例

import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.filter.OncePerRequestFilter;

@Configuration
public class FilterConfig {

    /**
     * 全局过滤器
     *
     * @return filter
     */
    @Bean
    public OncePerRequestFilter globalFilter() {
        return new GlobalFilter();
    }

    /**
     * 全局过滤器
     * 优先级：1（最高，order的数值越小，则优先级越高）
     *
     * @return FilterRegistrationBean
     */
    @Bean
    public FilterRegistrationBean<OncePerRequestFilter> globalFilterRegistrationBean() {
        FilterRegistrationBean<OncePerRequestFilter> filterRegistrationBean = new FilterRegistrationBean<>();
        filterRegistrationBean.setFilter(globalFilter());
        filterRegistrationBean.addUrlPatterns(GLOBAL_FILTER_PATTERNS);
        filterRegistrationBean.setOrder(1);
        return filterRegistrationBean;
    }
	
}

import org.springframework.web.filter.OncePerRequestFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 全局过滤器
 *
 */
public class GlobalFilter extends OncePerRequestFilter {

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
        filterChain.doFilter(request, response);
    }

}