SpringBoot项目限制带参数接口配置使用数量实现

       要求系统在使用过程中对某类带参数的接口做限制，也就只能配置几个接口供用户使用。带参数接口如：http://localhost:8088/sys/list?d=a001&c=b001,类似d=a001&c=b001这样的参数只能配置限定使用数量。超出使用数量，系统报出超过最大配置限制提醒。

1、过滤器

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArraySet;/*** @Description:TODO* @Author:sclbq@sina.com* @date:2025年07月2815:35*/
@Component
public class ApiLimitFilter implements Filter {// 允许的最大唯一组合数private static final int MAX_CONFIGS = 2;// 使用线程安全的Set存储唯一组合private final Set<String> configSet = new CopyOnWriteArraySet<>();private static final Logger logger = LoggerFactory.getLogger(ApiLimitFilter.class);@Overridepublic void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)throws IOException, ServletException {HttpServletRequest request = (HttpServletRequest) req;HttpServletResponse response = (HttpServletResponse) res;String clinicCode = request.getParameter("clinicCode");String departCode = request.getParameter("departCode");logger.info("请求参数: clinicCode={}, departCode={}, 请求路径={}", clinicCode, departCode, request.getRequestURI());if (clinicCode == null || departCode == null) {logger.warn("缺少必要参数，clinicCode或departCode未提供");response.sendError(HttpServletResponse.SC_BAD_REQUEST, "缺少必要参数");return;}// 创建唯一标识符String configKey = clinicCode + ":" + departCode;// 添加新组合前检查数量if(!configSet.contains(configKey)) {if(configSet.size() >= MAX_CONFIGS) {logger.warn("超过最大配置限制: {}", configKey);response.sendError(403, "超过最大配置限制");return;}configSet.add(configKey);logger.info("新增配置组合: {}，当前总量: {}", configKey, configSet.size());}chain.doFilter(req, res);}@Overridepublic void destroy() {configSet.clear();}/*** 供外部调用的清理方法*/public void clearConfigSet() {configSet.clear();logger.info("configSet已手动清理");}
}

2、配置文件

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;/*** @Description:TODO* @Author:sclbq@sina.com* @date:2025年07月2815:32*/
@Configuration
@Slf4j
public class ApiLimitConfig {@Autowiredprivate ApiLimitFilter apiLimitFilter;@Beanpublic FilterRegistrationBean<ApiLimitFilter> customApiLimitFilter() {FilterRegistrationBean<ApiLimitFilter> registration = new FilterRegistrationBean<>();registration.setFilter(apiLimitFilter);// 添加多个URL匹配模式
//        registration.addUrlPatterns("/jhtqs/queuing/qspatienapi/*");registration.addUrlPatterns("/queuing/qspatienapi/*");registration.setOrder(1);log.info("对指定接口进行过滤时的初始化...");return registration;}
}