详解SpringBoot 解决拦截器注入Service为空问题

一、自定义拦截器实现 HandlerInterceptor 接口

public class MyInterceptor implements HandlerInterceptor {

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

 @Override
 public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
   throws Exception {
  networkProxyInfoService.getAllNetworkProxyInfoByIsValid(GobalConstant.ProxyValid.VALID);
 }

 @Override
 public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2) throws Exception {
  // TODO Auto-generated method stub
  return true;
 }
}

二、自定义拦截器配置

@Configuration
public class MyWebMvcConfig extends WebMvcConfigurerAdapter {
 
 
 @Bean
 public MyInterceptor myInterceptor() {
  return new MyInterceptor();
 }

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

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