springBoot拦截器,

最新推荐文章于 2025-04-04 11:00:00 发布

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本文介绍了一个Spring MVC项目的配置案例，通过自定义拦截器实现对请求路径的拦截与排除，并展示了如何进行登录状态验证及记录方法执行时间。

--控制层

@RequestMapping(value="/toLogin",method={ RequestMethod.GET,RequestMethod.POST })
public String login(){
ModelAndView modelAndView = new ModelAndView("/carduser");
//return modelAndView;
return JsonUtil.objectToJson(1);
}

---配置

package com.yanshu.aspect;

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

@Configuration
public class MyWebMvcConfigurerAdapter extends WebMvcConfigurerAdapter {

/**
* 拦截器
* @param registry
*/
@Override
public void addInterceptors(InterceptorRegistry registry) {
// addPathPatterns 用于添加拦截规则
// excludePathPatterns 用户排除拦截
// System.out.println("------------>>>>>>>>>");
// registry.addInterceptor(new MyInterceptor()).addPathPatterns("/**").excludePathPatterns("/toLogin","/login");
registry.addInterceptor(new MyInterceptor()).addPathPatterns("/**").excludePathPatterns("/toLogin","/carduser");
super.addInterceptors(registry);
}

}

---

package com.yanshu.aspect;

import java.lang.reflect.Method;

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

import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

public class MyInterceptor implements HandlerInterceptor {

@Override
public void afterCompletion(HttpServletRequest arg0,
HttpServletResponse arg1, Object arg2, Exception arg3)
throws Exception {
// TODO Auto-generated method stub

}

@Override
public void postHandle(HttpServletRequest request, HttpServletResponse arg1,
Object handler, ModelAndView arg3) throws Exception {
// TODO Auto-generated method stub
HandlerMethod handlerMethod = (HandlerMethod) handler;
Method method = handlerMethod.getMethod();
long startTime = (Long) request.getAttribute("requestStartTime");
long endTime = System.currentTimeMillis();
long executeTime = endTime - startTime;
// 打印方法执行时间
if (executeTime > 1000) {
System.out.println("[" + method.getDeclaringClass().getName() + "." + method.getName() + "] 执行耗时 : "
+ executeTime + "ms");
} else {
System.out.println("[" + method.getDeclaringClass().getSimpleName() + "." + method.getName() + "] 执行耗时 : "
+ executeTime + "ms");
}
}

/* public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
Object handler) throws Exception {
// TODO 自动生成的方法存根
boolean flag =true;
return flag;
}*/

@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
Object handler) throws Exception {
// TODO Auto-generated method stub
boolean flag =true;
String ip = request.getRemoteAddr();
long startTime = System.currentTimeMillis();
request.setAttribute("requestStartTime", startTime);
HandlerMethod handlerMethod = (HandlerMethod) handler;
Method method = handlerMethod.getMethod();
System.out.println("用户:"+ip+",访问目标:"+method.getDeclaringClass().getName() + "." + method.getName());

Object attribute = request.getSession().getAttribute("cardid");
if(null==attribute){
response.sendRedirect("toLogin");
flag = false;
}else{
flag = true;
}
return flag;
}

}