一、编写一个拦截器类
public class LoginInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
System.out.println("进入拦截器。。。。");
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
}
}
二、写一个配置类使拦截器起作用
@Configuration
public class WebConfig extends WebMvcConfigurationSupport {
@Override
public void addInterceptors(InterceptorRegistry registry) {
//需要拦截路径
String[] addPathPatterns = {
"/**"
};
//不需要拦截路径
String[] excludePathPatterns = {
"/config"
};
//注册登录拦截器
registry.addInterceptor(new LoginInterceptor()).addPathPatterns(addPathPatterns).excludePathPatterns(excludePathPatterns);
}
}
