java拦截器实现

柔光的暖阳◎ 2023-10-02 09:46 36阅读 0赞

#### java拦截器实现 ####

package com.xdbigdata.dataAlarm.interceptor;
    
    import com.alibaba.fastjson.JSONObject;
    import com.xdbigdata.dataAlarm.model.domain.Role;
    import com.xdbigdata.dataAlarm.model.dto.RoleAndInfoDto;
    import com.xdbigdata.framework.common.exception.BaseException;
    import lombok.extern.slf4j.Slf4j;
    import org.springframework.stereotype.Component;
    import org.springframework.web.servlet.HandlerInterceptor;
    
    import javax.security.auth.login.LoginException;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import java.util.List;
    import java.util.Objects;
    import java.util.stream.Collectors;
    
    /**
     * @Description Please describe the role of this class.
     * @Author jg
     * @Date 2020/7/20 15:15
     * @Version 1.0
     */
    @Component
    @Slf4j
    public class UserInterceptor implements HandlerInterceptor {
     @Override
        public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
            RoleAndInfoDto roleAndInfoDto = JSONObject.parseObject((String) request.getSession().getAttribute("sessionUser"), RoleAndInfoDto.class);
            if (request.getMethod().equals("OPTIONS")) {
                return true;
            }
            String uri = request.getRequestURI();
            if (uri.matches(".*/static/.+\\..+$")) {
                log.debug("url={}, 为静态资源, 不拦截.", uri);
                return true;
            }
            if (uri.endsWith("html")) {
                log.debug("url={}, 为静态资源, 不拦截.", uri);
                return true;
            }
            //不拦截swagger的请求
            if (uri.contains("swagger-") || uri.contains("api-docs") || uri.contains("favicon")) {
                log.debug("不拦截swagger的请求", uri);
                return true;
            }
            if (Objects.isNull(roleAndInfoDto)) {
                throw new BaseException("登录已失效");
            }
            log.debug("run Access Filter roleAndInfoDto --------------> " + roleAndInfoDto.getSn());
            return true;
        }
    }

@Configuration
    public class InterceptorConfig implements WebMvcConfigurer {
    
        @Resource
        private UserInterceptor userInterceptor;
    
        @Override
        public void addInterceptors(InterceptorRegistry registry) {
            registry.addInterceptor(userInterceptor).addPathPatterns("/**").excludePathPatterns("/api/user/simulation","/api/user/getLoginUser");
        }
    
        /**
         * 跨域支持
         */
        @Override
        public void addCorsMappings(CorsRegistry registry) {
            registry.addMapping("/**")
                    .allowedOrigins("*")
                    .allowedMethods("GET","POST","PUT","OPTIONS","DELETE","PATCH")
                    .allowedHeaders("*")
                    .allowCredentials(true)
                    .maxAge(3600 * 24);
        }
    }