大屏项目初始化

src/main/java/com/mini/mybigscreen/Config/CorsConfig.java

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+package com.mini.mybigscreen.Config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class CorsConfig implements WebMvcConfigurer {
+
+    @Override
+    public void addCorsMappings(CorsRegistry registry) {
+        // 允许所有路径跨域
+        registry.addMapping("/**")
+                .allowedOriginPatterns("*")
+                // 允许的请求方法
+                .allowedMethods("GET", "POST", "PUT", "DELETE", "OPTIONS")
+                // 允许的请求头
+                .allowedHeaders("*")
+                // 允许携带Cookie
+                .allowCredentials(true)
+                // 预检请求有效期（秒）
+                .maxAge(3600);
+    }
+
+}

src/main/java/com/mini/mybigscreen/Config/LoginInterceptor.java

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+package com.mini.mybigscreen.Config;
+
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.HttpSession;
+import org.springframework.stereotype.Component;
+import org.springframework.web.servlet.HandlerInterceptor;
+
+
+@Component
+public class LoginInterceptor implements HandlerInterceptor {
+
+    @Override
+    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+        HttpSession session = request.getSession(false);
+        if (session == null) {
+            response.sendRedirect(request.getContextPath() + "/index.html");
+            return false;
+        }
+        return true;
+    }
+}

src/main/java/com/mini/mybigscreen/Config/WebConfig.java

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+package com.mini.mybigscreen.Config;
+
+import jakarta.annotation.Resource;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+
+    @Resource
+    private LoginInterceptor loginInterceptor;
+
+
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        // 注册登录拦截器，拦截所有请求，排除登录接口
+        registry.addInterceptor(loginInterceptor)
+                .addPathPatterns("/**") // 拦截所有路径
+                .excludePathPatterns(
+                        "/",
+                        "/index.html",
+                        "/userLogin"
+                )
+                .excludePathPatterns("/static/**")
+                .excludePathPatterns("/assets/**")
+        ; // 排除静态资源（前端打包后的文件）
+    }
+}