springboot + jwt + shiro 导致跨域问题

简介

这是自己做个人博客所遇到的问题，简单记录一下

情况说明

因为携带了token、和shiro的filter才导致了这个问题
token：因为个人业务需要判断是否携带了token 因为token属于header中自定义属性
会导致方法请求前发送一个option请求 为预请求
shiro：因为filter中会去取cookie，所以也会发送option请求
这就导致了跨域问题

解决方案一

package com.az.blogmanagement.cfg;

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import com.az.blogmanagement.Interceptor.JsonWebTokenInterceptor;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;

@Configuration
@ServletComponentScan // 支持自定义web过滤器和servlet
public class WebConfig implements WebMvcConfigurer {

	@Bean
	public HttpMessageConverters httpMessageConverters() {
		FastJsonHttpMessageConverter fjhmc = new FastJsonHttpMessageConverter();
		fjhmc.setCharset(Charset.forName("UTF-8"));
		List types = new ArrayList();
		types.add(MediaType.APPLICATION_JSON_UTF8);
		fjhmc.setSupportedMediaTypes(types);
		fjhmc.setFeatures(SerializerFeature.WriteEnumUsingToString, SerializerFeature.WriteMapNullValue,
				SerializerFeature.QuoteFieldNames, SerializerFeature.PrettyFormat,
				SerializerFeature.WriteDateUseDateFormat, SerializerFeature.WriteNullNumberAsZero,
				SerializerFeature.WriteNullStringAsEmpty, SerializerFeature.DisableCircularReferenceDetect);
		return new HttpMessageConverters(fjhmc);
	}

	 //配置拦截器
	 @Override
	 public void addInterceptors(InterceptorRegistry registry) {
	 registry.addInterceptor(new JsonWebTokenInterceptor()).addPathPatterns("/api/**").addPathPatterns("/c/**").excludePathPatterns("/images/**",
	 "/js/**");
	 }

	@Bean
	public FilterRegistrationBean corsFilter() {
		final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
		final CorsConfiguration config = new CorsConfiguration();
		// 允许cookies跨域
		config.setAllowCredentials(true);
		// #允许向该服务器提交请求的URI，*表示全部允许，在SpringMVC中，如果设成*，会自动转成当前请求头中的Origin
		config.addAllowedOrigin("*");
		// #允许访问的头信息,*表示全部
		config.addAllowedHeader("*");
		// 预检请求的缓存时间（秒），即在这个时间段里，对于相同的跨域请求不会再预检了
		config.setMaxAge(18000L);
		// 允许提交请求的方法，*表示全部允许
		config.addAllowedMethod("OPTIONS");
		config.addAllowedMethod("HEAD");
		config.addAllowedMethod("GET");
		config.addAllowedMethod("PUT");
		config.addAllowedMethod("POST");
		config.addAllowedMethod("DELETE");
		config.addAllowedMethod("PATCH");
		source.registerCorsConfiguration("/**", config);

		FilterRegistrationBean bean = new FilterRegistrationBean(new CorsFilter(source));
		// 设置监听器的优先级
		bean.setOrder(0);
		return bean;
	}
}

方案二

package com.az.blogmanagement.cfg;

import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpStatus;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author ：Azming
 * @date ：Created in 2022/8/24 13:09
 * @description：
 * @modified By：
 * @version:
 */
@Configuration
public class CorsConfig implements Filter {
    private CorsConfiguration buildConfig() {
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        // 允许任何头
        corsConfiguration.addAllowedHeader("*");
        // 允许任何方法（post、get等）
        corsConfiguration.addAllowedMethod("*");
        //允许cookie
        corsConfiguration.setAllowCredentials(true);// 是否支持安全证书(必需参数)
        corsConfiguration.setMaxAge(3600L);// 预检请求的有效期，单位为秒。
        corsConfiguration.addExposedHeader("set-cookie");
        corsConfiguration.addExposedHeader("access-control-allow-headers");
        corsConfiguration.addExposedHeader("access-control-allow-methods");
        corsConfiguration.addExposedHeader("access-control-allow-origin");
        corsConfiguration.addExposedHeader("access-control-max-age");
        corsConfiguration.addExposedHeader("X-Frame-Options");

        return corsConfiguration;
    }


    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        // 对接口配置跨域设置
        source.registerCorsConfiguration("/**", buildConfig());
        return new CorsFilter(source);
    }



    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;

        response.setHeader("Access-control-Allow-Origin", request.getHeader("Origin"));
        response.setHeader("Access-Control-Allow-Credentials", "true");
        response.setHeader("Access-Control-Allow-Headers", request.getHeader("Access-Control-Request-Headers"));
        response.addHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, PUT");
        if ("OPTIONS".equals(request.getMethod())) {
            response.setStatus(HttpStatus.NO_CONTENT.value());
            return;
        } else {
            filterChain.doFilter(request, response);
        }
    }

    @Bean
    public FilterRegistrationBean replaceTokenFilter(){
        FilterRegistrationBean registration = new FilterRegistrationBean();
        registration.setDispatcherTypes(DispatcherType.REQUEST);
        registration.setFilter( new CorsConfig ());
        registration.addUrlPatterns("/*");
        registration.setName("crosFilter ");
        registration.setOrder(1);
        return registration;
    }
}

两种方案有啥区别，我也不清楚，只知道两种方案都可以解决这个问题
有大佬知道的话，麻烦评论说明一下