SpringBoot中请求拦截体系

【拦截器】

import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import org.springframework.web.bind.ServletRequestUtils;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author JHL
 * @version 1.0
 * @date 2022/9/22 19:30
 * @since : JDK 11
 */
public class CustomRequestInterceptor implements HandlerInterceptor {

    private static final String[] whiteList = new String[]{
            "login",
            "isLogin",
    };

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        boolean flag = true;
        String url = request.getRequestURI();
        for (String s : whiteList) {
            if (url.contains(s)) {
                flag = false;
            }
        }
        if (flag) {
            if ("匹配某种条件就返回false") {
                response.setContentType("application/json;charset=UTF-8");
                response.getWriter().write("{\"msg\":\"请求异常!\",\"code\":500}");
                response.flushBuffer();
                return false;
            }
        }
        return HandlerInterceptor.super.preHandle(request, response, handler);
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}

【配置拦截器】

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

/**
 * @author JHL
 * @version 1.0
 * @date 2022/9/22 19:41
 * @since : JDK 11
 */
@Configuration
public class WebConfig implements WebMvcConfigurer {
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        // 路径支持正则匹配
        registry.addInterceptor(new OpRequestFilter()).addPathPatterns("/path/**");
    }
}

请求拦截过滤参考：

https://mrbird.cc/Spring-Boot-Filter-Interceptor.html

代码参考：

https://blog.csdn.net/someday____/article/details/126308356