SpringBoot 注册拦截器方式及拦截器如何获取spring bean实例

SpringBoot 注册拦截器时,如果用New对象的方式的话,如下:

private void addTokenForMallInterceptor(InterceptorRegistry registry) {
InterceptorRegistration tokenInterceptor = registry.addInterceptor(new TokenInterceptor());
tokenInterceptor.addPathPatterns("/1");//默认需要一个拦截路径,防止路径校验为空时造成全部拦截
filterByIniProperties(tokenInterceptor, "token-mapping");
commonExclude(tokenInterceptor);
}
此种方式是通过new对象的方式使用bean的。
那如果遇到需要第三方Bean实例注入时,应该怎么办呢?

解决方案有两种:
1、组件实例化,通过@Autowired 或@Resource等注解注入获取
2、在已有的注解类型下,通过spring提供的WebApplicationContext的工具类获取
public class TokenInterceptor extends HandlerInterceptorAdapter {
private static final Logger LOGGER = LoggerFactory.getLogger(TokenInterceptor.class);
private BaseCacheService baseCacheService;

public Boolean queryOrderAndDelete(HttpServletRequest request,Long platformId, String orderToken) {
if (baseCacheService == null) {
BeanFactory factory = WebApplicationContextUtils
.getRequiredWebApplicationContext(request.getServletContext());
baseCacheService = (BaseCacheService) factory.getBean("baseCacheServiceImpl");
// "baseCacheServiceImpl"是默认的spring上下文中bean注入时的名字,若bean注入时没有指定注入名字,默认是类名且首字母小写
}
  ......
}
posted @ 2019-05-26 00:42  xuzhujack  阅读(2595)  评论(0编辑  收藏  举报
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