spring boot 實現多個 interceptor 並指定順序

首先咱們建立Interceptor，實現HandlerInterceptor覆寫方法：
1、下面我建立了三個攔截器：
MyInterceptor，UserInterceptor，StudentInterceptor

@Component
public class MyInterceptor implements HandlerInterceptor {

@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
System.out.println("MyInterceptor preHandle");
return true;
}

@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
System.out.println("MyInterceptor postHandle");
}

@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
System.out.println("MyInterceptor afterCompletion");
}
}

@Component
public class StudentInterceptor implements HandlerInterceptor {

@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
System.out.println("StudentInterceptor preHandle");
return true;
}

@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
System.out.println("StudentInterceptor postHandle");

}

@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
System.out.println("StudentInterceptor afterCompletion");

}
}

@Component
public class UserInterceptor implements HandlerInterceptor {

@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

System.out.println("UserInterceptor preHandle");
return true;
}

@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
System.out.println("UserInterceptor postHandle");
}

@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
System.out.println("UserInterceptor afterCompletion");
}
}

2、把攔截器加入到攔截器隊列 實現WebMvcConfigurer

@Configuration
public class MyAdapter implements WebMvcConfigurer {

@Resource
private MyInterceptor myInterceptor;

@Resource
private UserInterceptor userInterceptor;

@Resource
private StudentInterceptor studentInterceptor;

@Override
public void addInterceptors(InterceptorRegistry registry) {
//1.加入的順序就是攔截器執行的順序，
//2.按順序執行全部攔截器的preHandle
//3.全部的preHandle 執行完再執行所有postHandle 最後是postHandle
registry.addInterceptor(studentInterceptor).addPathPatterns("/**");
registry.addInterceptor(myInterceptor).addPathPatterns("/**");
registry.addInterceptor(userInterceptor).addPathPatterns("/**");

}
}

3、最後訪問controller

@RestController
public class TestController {

@RequestMapping("/test")
public String test() {
return "test";
}

}

 

 

————————————————版權聲明：本文爲CSDN博主「小賊驢」的原創文章，遵循 CC 4.0 BY-SA 版權協議，轉載請附上原文出處連接及本聲明。原文連接：https://blog.csdn.net/weixin_38362455/article/details/85029748