需要在spring的拦截器中使用自定义的服务，这要就设计到将服务注入到拦截器中。网上看的情况有两种：
1、
1 @Configuration
2 public class OptPermissionHandlerInterceptor extends HandlerInterceptorAdapter {
3 private Logger logger = LoggerFactory.getLogger(OptPermissionHandlerInterceptor.class);
4
5 @Autowired
6 private OperatorLogService operatorLogService; //这里使用@Autowired无法注入成功
7
8 @Override
9 public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
10 if (true) {
11 return true;
12 } else {
13 String result = "当前登录用户无权限！";
14 response.getOutputStream().write(result.getBytes());
15 response.setStatus(HttpStatus.OK.value());
16 return false;
17 }
18 }
19
20 @SuppressWarnings("rawtypes")
21 @Override
22 public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
23 try {
24 if (handler instanceof HandlerMethod) {
25 HandlerMethod handlerMethod = (HandlerMethod) handler;
26 String beanName = handlerMethod.getBean().getClass().toString();
27 String methodName = handlerMethod.getMethod().getName();
28 String uri = request.getRequestURI();
29 String remoteAddr = request.getRemoteAddr();
30 String sessionId = request.getSession().getId();
31
32 OperatorLog optLog = new OperatorLog();
33 optLog.setBeanName(beanName);
34 optLog.setMethodName(methodName);
35 optLog.setRemoteAddr(remoteAddr);
36 optLog.setSessionId(sessionId);
37 optLog.setUri(uri);
38
39 if (operatorLogService == null) {//解决service为null无法注入问题
40 System.out.println("operatorLogService is null!!!");
41 BeanFactory factory = WebApplicationContextUtils.getRequiredWebApplicationContext(request.getServletContext());
42 operatorLogService = (OperatorLogService) factory.getBean("operatorLogService");
43 }
44 operatorLogService.saveOperatorLog(optLog);
45 }
46 } catch (Exception e) {
47 logger.error("", e);
48 }
49 }
50
51 @Override
52 public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler,
53 Exception ex) throws Exception {
54
55 }
56
57 }
2、
1 @Override
2 public void addInterceptors(InterceptorRegistry registry) {
3 registry.addInterceptor(sessionInterceptor())
4 .addPathPatterns("/**")
5 .excludePathPatterns( "/push/**");
6 super.addInterceptors(registry);
7 }
8
9 @Bean
10 public SessionInterceptor sessionInterceptor() {
11 return new SessionInterceptor();
12 }
第二种的方式中 sessionInterceptor类中也可以使用：@Configuration，总之就是需要让spring进行管理。
Original: https://www.cnblogs.com/lcngu/p/8822432.html
Author: ngulc
Title: spring拦截器中使用spring的自动注入
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