跨域拦截器

package com.rbynode.rbyaipro.interceptor;

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
public class CorsInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 允许跨域请求的域名
        response.setHeader("Access-Control-Allow-Origin", "http://localhost:8081");
        // 允许携带凭据
        response.setHeader("Access-Control-Allow-Credentials", "true");

        // 允许的请求方法
        response.setHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE");
        // 允许的请求头
        response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
        // 如果是预检请求（OPTIONS 请求），直接返回
        if ("OPTIONS".equalsIgnoreCase(request.getMethod())) {
            response.setStatus(HttpServletResponse.SC_OK);
            return false;
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        // 在请求处理之后调用，可以在这里进行一些操作
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        // 在整个请求结束之后调用，可以在这里进行一些操作
    }
}

package com.rbynode.rbyaipro.config;

import com.rbynode.rbyaipro.interceptor.CorsInterceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class WebConfig implements WebMvcConfigurer {
    
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new CorsInterceptor()).addPathPatterns("/**").order(Ordered.HIGHEST_PRECEDENCE);
    }
}