现在,我们的项目是一个jar工程,那么就没有webapp,我们的静态资源该放哪里呢?
默认的静态资源路径为:
- classpath:/META-INF/resources/
- classpath:/resources/
- classpath:/static/
- classpath:/public/
只要静态资源放在这些目录中任何一个,SpringMVC都会帮我们处理。
添加拦截器:拦截器也是我们经常需要使用的,在SpringBoot中该如何配置呢?
通过实现`WebMvcConfigurer`并添加`@Configuration`注解来实现自定义部分SpringMvc配置。
首先我们定义一个拦截器:
@Component public class MyInterceptor implements HandlerInterceptor { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { System.out.println("preHandle method is running!"); return true; } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { System.out.println("postHandle method is running!"); } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { System.out.println("afterCompletion method is running!"); } }
然后定义配置类,注册拦截器:
@Configuration public class MvcConfiguration implements WebMvcConfigurer { @Autowired private HandlerInterceptor myInterceptor; /** * 重写接口中的addInterceptors方法,添加自定义拦截器 * @param registry */ @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(myInterceptor).addPathPatterns("/**"); } }
接下来运行并查看日志:
preHandle method is running!
postHandle method is running!
afterCompletion method is running!
会发现日志中只有这些打印信息,springMVC的日志信息都没有,因为springMVC记录的log级别是debug,springboot默认是显示info以上,我们需要进行配置。
SpringBoot通过`logging.level.*=debug`来配置日志级别,*填写包名
设置org.springframework包的日志级别为debug
logging.level.org.springframework=debug