HandlerInterceptorAdapter拦截器多个拦截器时执行的顺序

前提拦截器加载顺序是 1 2 3.

@Configuration
public class InterceptorConfig implements WebMvcConfigurer {
    @Autowired
    private Test1neInterceptor test1neInterceptor;
    @Autowired
    private Test2neInterceptor test2neInterceptor;

   @Override
   public void addInterceptors(InterceptorRegistry registry) {
       registry.addInterceptor(test1neInterceptor).addPathPatterns("/**");
       registry.addInterceptor(test2neInterceptor).addPathPatterns("/**");
   }

}

执行顺序如图所示。一个请求从web发起在请求处理之前被拦截器1的preHandle调用

依次1preHandle--->2preHandle--->3preHandle--->controller中目标方法

3postHandle--->2postHandle--->1postHandle--->页面渲染ModelAndView

3afterCompletion--->2afterCompletion--->1afterCompletion

preHandle要返回都为true 才能依次执行否则直接 3afterCompletion--->2afterCompletion--->1afterCompletion

@Component
public class Test1neInterceptor extends HandlerInterceptorAdapter {
    public void HandlerInterceptorAdapter() {
    }

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
       //预处理在业务处理之前被调用返回true继续执行返回false中断执行
        System.out.println("*******************preHandle1****************************");
        System.out.println("Thread  preHandle1"+Thread.currentThread().getId());
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        // 在业务处理之后视图生成之前被调用
        System.out.println("*******************postHandle1****************************");
        System.out.println("Thread  postHandle1:"+Thread.currentThread().getId());
        System.out.println("postHandle1 controller....处理后....视图生成之前");
        System.out.println("modelAndView:"+modelAndView);

        modelAndView.addObject("name", "Hello World!!!!!");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable Exception ex) throws Exception {
        // 在视图生成之后被调用
        System.out.println("*******************afterCompletion1****************************");
    }

    @Override
    public void afterConcurrentHandlingStarted(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("*******************afterConcurrentHandlingStarted1 有异步调用****************************");
        System.out.println("Thread  afterConcurrentHandlingStarted1:"+Thread.currentThread().getId());
    }
}

@Component
public class Test2neInterceptor extends HandlerInterceptorAdapter {
    public void HandlerInterceptorAdapter() {
    }

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
       //预处理在业务处理之前被调用返回true继续执行返回false中断执行
        System.out.println("*******************preHandle2****************************");
        System.out.println("Thread  preHandle2:"+Thread.currentThread().getId());
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        // 在业务处理之后视图生成之前被调用
        System.out.println("*******************postHandle2****************************");
        System.out.println("Thread  postHandle2:"+Thread.currentThread().getId());
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable Exception ex) throws Exception {
        // 在视图生成之后被调用
        System.out.println("*******************afterCompletion2****************************");
    }

    @Override
    public void afterConcurrentHandlingStarted(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("*******************afterConcurrentHandlingStarted2 有异步调用****************************");
        System.out.println("Thread  afterConcurrentHandlingStarted2:"+Thread.currentThread().getId());
    }
}

 @RequestMapping("/show2")
    public AsyncResult<String> test2(Model model) throws InterruptedException {
        System.out.println("进入 controller1......");
        System.out.println("Thread controller"+Thread.currentThread());
        String name = "mary";
        model.addAttribute("name",name);
        return new AsyncResult<>("show");
    }

    @RequestMapping("/show3")
    public StreamingResponseBody test3(Model model) throws InterruptedException {
        System.out.println("进入 controller1......");
        System.out.println("Thread controller"+Thread.currentThread());
        String name = "mary";
        model.addAttribute("name",name);
        return (OutputStream outputStream) -> {
            outputStream.write("streaming".getBytes());
            outputStream.flush();
            outputStream.close();
        };
    }

    @RequestMapping("/show4")
    public String test4(ModelAndView modelAndView) throws InterruptedException {
        System.out.println("进入 controller1......");
        System.out.println("Thread controller"+Thread.currentThread());
        String name = "mary";
        System.out.println("进入 modelAndView11......");
        modelAndView.addObject("name",name);
        System.out.println("进入 modelAndView112......");
        return  "show";
    }