解决spring boot 拦截器中无法注入serivce

╰半橙微兮° 2022-06-08 12:15 400阅读 0赞

**摘要**

最近在项目中用拦截器去拦截用户操作，并对操作日志进行记录， 在拦截器中记录日志时调用service 层 的save方法，发现service为null ,通过 @Autowired private LogService logService;这种方式无法注入；解决办法看以下代码。

@Configuration 
    public class OptPermissionHandlerInterceptor extends HandlerInterceptorAdapter { 
      private Logger logger = LoggerFactory.getLogger(OptPermissionHandlerInterceptor.class); 
    
      @Autowired 
      private OperatorLogService operatorLogService; //这里使用@Autowired无法注入成功 
    
      @Override 
      public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { 
            if (true) { 
                return true; 
            } else { 
                String result = "当前登录用户无权限！"; 
                response.getOutputStream().write(result.getBytes()); 
                response.setStatus(HttpStatus.OK.value()); 
                return false; 
            } 
      } 
    
      @SuppressWarnings("rawtypes") 
      @Override 
      public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { 
        try { 
          if (handler instanceof HandlerMethod) { 
               HandlerMethod handlerMethod = (HandlerMethod) handler; 
               String beanName = handlerMethod.getBean().getClass().toString(); 
               String methodName = handlerMethod.getMethod().getName(); 
               String uri = request.getRequestURI(); 
               String remoteAddr = request.getRemoteAddr(); 
               String sessionId = request.getSession().getId(); 
    
               OperatorLog optLog = new OperatorLog(); 
               optLog.setBeanName(beanName); 
               optLog.setMethodName(methodName); 
               optLog.setRemoteAddr(remoteAddr); 
               optLog.setSessionId(sessionId); 
               optLog.setUri(uri); 
    
          if (operatorLogService == null) {
       //解决service为null无法注入问题 
             System.out.println("operatorLogService is null!!!"); 
             BeanFactory factory = WebApplicationContextUtils.getRequiredWebApplicationContext(request.getServletContext()); 
             operatorLogService = (OperatorLogService) factory.getBean("operatorLogService"); 
          } 
          operatorLogService.saveOperatorLog(optLog); 
         } 
       } catch (Exception e) { 
           logger.error("", e); 
       } 
      } 
      
      @Override 
      public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
    
      } 
    
    }原文地址：http://blog.csdn.net/yubinpll9110/article/details/51820336