springboot 跨域配置

方案一

@Configuration
public class GlobalCorsConfig {@Beanpublic CorsFilter corsFilter() {//1. 添加 CORS配置信息CorsConfiguration config = new CorsConfiguration();//放行哪些原始域config.addAllowedOrigin("*");//是否发送 Cookieconfig.setAllowCredentials(true);//放行哪些请求方式config.addAllowedMethod("*");//放行哪些原始请求头部信息config.addAllowedHeader("*");//暴露哪些头部信息config.addExposedHeader("*");//2. 添加映射路径UrlBasedCorsConfigurationSource corsConfigurationSource = new UrlBasedCorsConfigurationSource();corsConfigurationSource.registerCorsConfiguration("/**",config);//3. 返回新的CorsFilterreturn new CorsFilter(corsConfigurationSource);}
}

方案二

// 案例 一
@Configuration
public class CorsConfig implements WebMvcConfigurer {@Overridepublic void addCorsMappings(CorsRegistry registry) {registry.addMapping("/**")//是否发送Cookie.allowCredentials(true)//放行哪些原始域.allowedOrigins("*").allowedMethods(new String[]{"GET", "POST", "PUT", "DELETE"}).allowedHeaders("*").exposedHeaders("*");}
}

方案三

在控制器(类上)上使用注解 @CrossOrigin:，表示该类的所有方法允许跨域。

在方法上使用注解 @CrossOrigin:

方案四

package cn.wideth.aop;import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;@Component
public class MyCorsFilter implements Filter {public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {HttpServletResponse response = (HttpServletResponse) res;response.setHeader("Access-Control-Allow-Origin", "*");response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");response.setHeader("Access-Control-Max-Age", "3600");response.setHeader("Access-Control-Allow-Headers", "x-requested-with,content-type");chain.doFilter(req, res);}public void init(FilterConfig filterConfig) {}public void destroy() {}
}

方案五

package com.yiyi.yiyigateway.config.cors;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.reactive.CorsWebFilter;
import org.springframework.web.cors.reactive.UrlBasedCorsConfigurationSource;
import org.springframework.web.reactive.config.CorsRegistry;
import org.springframework.web.reactive.config.WebFluxConfigurer;
import org.springframework.web.util.pattern.PathPatternParser;/*** @author zrf* @date 2024-50-28 11:50:32* @description 全局跨域配置*/
@Configuration
public class GlobalCorsConfig implements WebFluxConfigurer {/*** 方案一* @return*/@Beanpublic CorsWebFilter corsFilter() {CorsConfiguration config = new CorsConfiguration();config.setAllowCredentials(true); // 允许cookies跨域config.addAllowedOrigin("*");// #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Originconfig.addAllowedHeader("*");// #允许访问的头信息,*表示全部config.addAllowedMethod("*");// 允许提交请求的方法类型，*表示全部允许config.setMaxAge(18000L);// 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UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(new PathPatternParser());source.registerCorsConfiguration("/**", config);return new CorsWebFilter(source);}/*** 方案二 实现WebFluxConfigurer重写addCorsMappings方法* @param registry*//* @Overridepublic void addCorsMappings(CorsRegistry registry) {registry.addMapping("/**")//允许路径.allowedHeaders("*").allowedOrigins("*").allowedMethods("*").allowCredentials(true).maxAge(36000);}*/}