如何在拦截器中获取url路径里面@PathVariable的参数值

 Map pathVariables = (Map) request.getAttribute( HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE); String classId = (String)pathVariables.get("classId");

 // 获取某个班级下面的学生列表 @RequestMapping("/classes/{classId}/students") public String list(@PathVariable String classId){ return "学生列表"; }

 package com.example.demo; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.HandlerInterceptor; import org.springframework.web.servlet.HandlerMapping; import org.springframework.web.servlet.ModelAndView; import java.util.Map; public class SpringMVCInterceptor implements HandlerInterceptor { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { Map pathVariables = (Map) request.getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE); String chatbotId = (String)pathVariables.get("classId"); System.out.println("classId: " + classId); if ("1234".equals(classId)) return true; return false; } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { // TODO Auto-generated method stub } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { // TODO Auto-generated method stub } } 

 package com.example.demo; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.InterceptorRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport; @Configuration public class MvcInterceptorConfig extends WebMvcConfigurationSupport{ @Override protected void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(new SpringMVCInterceptor()).addPathPatterns("/chatbot/**"); super.addInterceptors(registry); } } 

 @RequestMapping(value = "/page/{id}", method = RequestMethod.GET)     

 Tool tool = new Tool(); tool.setUrls(new String[]{"finance/account/loanDownExcel/cur","finance/account/loanDownExcel/all"});

 @RequestMapping("accountlog/loanDownExcel/{type}") public void exportAccountLogExcel(@PathVariable("type")  String type)throws Exception {}

 public void exportAccountLogExcel(@PathVariable   String type)throws Exception {}