java跨域访问配置

Posted 2020-12-10 ___mouM

package com.get;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.MultipartConfigFactory;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

import javax.servlet.MultipartConfigElement;

@Configuration
@EnableZuulProxy
@EnableEurekaClient
@SpringBootApplication

public class EurekaZuulClientApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaZuulClientApplication.class, args);
    }

    @Bean
    public CorsFilter corsFilter() {
        final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        final 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。。这里尽量限制来源域，比如http://xxxx:8080 ,以降低安全风险。。
        config.addAllowedHeader("*");      // 允许访问的头信息,*表示全部
        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
        config.addAllowedMethod("*");      // 允许提交请求的方法，*表示全部允许，也可以单独设置GET、PUT等
        config.addAllowedMethod("HEAD");
        config.addAllowedMethod("GET");   // 允许Get的请求方法
        config.addAllowedMethod("PUT");
        config.addAllowedMethod("POST");
        config.addAllowedMethod("DELETE");
        config.addAllowedMethod("PATCH");
        source.registerCorsConfiguration("/**", config);
        return new CorsFilter(source);
    }
    /**
     * 文件上传配置
     *
     * @return
     */
    @Bean
    public MultipartConfigElement multipartConfigElement() {
        MultipartConfigFactory factory = new MultipartConfigFactory();
        //  单个数据大小
        factory.setMaxFileSize("10240KB"); // KB,MB
        /// 总上传数据大小
        factory.setMaxRequestSize("102400KB");
        return factory.createMultipartConfig();
    }

}