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我的后端设置与 REST 控制器上的 CORS 存在很大问题。我尝试应用各种过滤器，但它们都不起作用。这是我当前的 CORS 过滤器实现

import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.CorsConfigurationSource;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.cors.reactive.CorsWebFilter;

import org.springframework.web.filter.CorsFilter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;

@Slf4j
@Component
public class CORSFilter implements Filter {
    @Bean
    public CorsFilter corsFilter() {
        final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        final CorsConfiguration config = new CorsConfiguration();
        config.setAllowedHeaders(Arrays.asList("Origin", "Content-Type", "Accept", "authorization"));
        config.setAllowedMethods(Arrays.asList("GET", "POST", "PUT", "OPTIONS", "DELETE", "PATCH"));
        config.setAllowedOriginPatterns(Collections.singletonList("*"));
        config.setAllowCredentials(true);
        source.registerCorsConfiguration("/**", config);
        return new CorsFilter(source);
    }
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        response.setHeader("Access-Control-Allow-Origin", "http://localhost:3000");
        response.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, OPTIONS, DELETE, PATCH");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Headers", "Origin, Content-Type, Accept");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        servletRequest.getParameterMap();
        filterChain.doFilter(servletRequest, servletResponse);

    }



}

由于它不起作用，我还添加了 CORS 配置器

import org.springframework.context.annotation.Bean;
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 CORSconfigurer {
    @Bean
    public WebMvcConfigurer corsConfigurer() {
        return new WebMvcConfigurer() {
            @Override
            public void addCorsMappings(CorsRegistry registry) {
                registry.addMapping("/customer").allowedOrigins("http://localhost:3000");
                registry.addMapping("/promotion").allowedOrigins("http://localhost:3000");
            }
        };
    }
}

它也没有工作。我将 CORS 注释应用于每个控制器

 @RestController
@RequestMapping("/beacon")
@RequiredArgsConstructor
@CrossOrigin
public class BeaconController {

仍然没有帮助。

Error is this: Access to XMLHttpRequest at 'my-domain.dev/api-cms/customer/…' from origin 'localhost:3000' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

这个问题困扰了我好几个星期，我不知道该怎么办了。我非常感谢这里的好建议。

4

1 回答 1

0

我不明白你为什么要创建一个额外的过滤器，因为通常实现WebMvcConfigurer就足够了——至少就我的知识和经验而言。

您是否尝试过以下配置，例如：

@Configuration
public class WebConfig extends WebMvcAutoConfiguration implements WebMvcConfigurer {

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOrigins(CorsConfiguration.ALL)
                .allowedMethods(CorsConfiguration.ALL)
                .allowedHeaders(CorsConfiguration.ALL)
                .exposedHeaders("Location")
                .allowCredentials(true);
    }
}

我知道这个配置并不完美，因为您允许每个来源。然而，这是一个很好的起点，过去对我来说是快速原型。

干杯

于 2022-03-04T08:09:25.970 回答