第一步，定義攔截器：

package com.zl.interceptor;import org.springframework.web.servlet.HandlerInterceptor;import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class myInterceptor implements HandlerInterceptor { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { System.out.println('preHandle'); return true; } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { System.out.println('preHandle'); } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { System.out.println('preHandle'); }}

控制臺(tái)打印三個(gè)輸出語句，作為測(cè)試。

第二步：配置攔截器

package com.zl.interceptor;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.InterceptorRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;@Configurationpublic class WebMVCConfig implements WebMvcConfigurer { @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(myInterceptor()).addPathPatterns('/**'); } @Bean myInterceptor myInterceptor(){ return new myInterceptor(); }}

將定義的攔截器注入到這個(gè)配置方法中，并攔截所有路徑。

第三步：寫個(gè)接口測(cè)試

package com.zl.interceptor;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RestController;@RestControllerpublic class helloController { @GetMapping('/hello') public String hello(){ return 'hello'; }}

測(cè)試結(jié)果

定義的攔截器三個(gè)方法都執(zhí)行了。

以上就是本文的全部內(nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持好吧啦網(wǎng)。