tlias管理系统--登录校验--拦截器Interceptor快速入门

tlias-web-management/src/main/java/com/inmind/config/WebConfig.java

@@ -0,0 +1,21 @@
+package com.inmind.config;
+
+import com.inmind.interceptor.LoginCheckInterceptor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration//告诉spring，当前是个配置类
+public class WebConfig implements WebMvcConfigurer {
+
+    //获取拦截器对象
+    @Autowired
+    private LoginCheckInterceptor loginCheckInterceptor;
+
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        //注册拦截器，并设置拦截资源路径
+        registry.addInterceptor(loginCheckInterceptor).addPathPatterns("/**");
+    }
+}

tlias-web-management/src/main/java/com/inmind/interceptor/LoginCheckInterceptor.java

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+package com.inmind.interceptor;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+import org.springframework.web.servlet.HandlerInterceptor;
+import org.springframework.web.servlet.ModelAndView;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+@Component
+@Slf4j
+public class LoginCheckInterceptor implements HandlerInterceptor {
+    @Override
+    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+        System.out.println("preHandle  执行了");
+//        return true;//放行，那么控制器的资源就可以被访问
+        return false;//不放行，那么控制器的资源就不可以被访问
+    }
+
+    @Override
+    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
+        System.out.println("postHandle  执行了");
+    }
+
+    @Override
+    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
+        System.out.println("afterCompletion");
+    }
+}