springboot @CrossOrigin跨域注解无效问题解决, CrossFilter 跨域过滤器配置 WebMvcConfigurer corsFilter

springboot @CrossOrigin跨域注解无效问题解决

配置一个跨域过滤器 CrossFilter

然后在接口层添加@CrossOrigin注解, 如果还无效, 说明api中不清楚是哪个请求需要指定@RequestMapping(value = "report", method = "POST") 具体的请求方法

示例

@Api(tags = {"跨域测试接口"})
@RestController
@RequestMapping("/Cross/demo")
@CrossOrigin
public class CrossDemoController{

	@RequestMapping("demo1", method = "POST")
	public void demo1(){
		System.out.println("demo1");
	}
	
	@PostMapping("postDemo")
	public void postDemo(){
		System.out.println("postDemo");
	}
	
}

CrossFilter 跨域过滤器

package com.admin.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpHeaders;
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.WebMvcConfigurer;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 跨域配置
 *
 * @author yunnuo
 * @date 2022-08-26
 */
@Configuration
public class CrossFilter implements Filter {


    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Bean
    public WebMvcConfigurer corsConfigurer() {
        return new WebMvcConfigurer() {
            @Override
            public void addCorsMappings(CorsRegistry registry) {
                registry.addMapping("/**").
                        allowedOrigins("*").
                        allowedMethods("*").
                        allowedHeaders("*").
                        allowCredentials(true).
                        exposedHeaders(HttpHeaders.SET_COOKIE).maxAge(3600L);
            }
        };
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

        HttpServletResponse res = (HttpServletResponse) response;
        HttpServletRequest req = (HttpServletRequest) request;

        res.addHeader("Access-Control-Allow-Origin", "*");
        res.addHeader("Access-Control-Allow-Methods", "*");
        res.addHeader("Access-Control-Allow-Headers", "*");
        res.addHeader("Access-Control-Max-Age", "3600");
        // enable cookie
        res.addHeader("Access-Control-Allow-Credentials", "true");
        chain.doFilter(req, res);
    }

    @Override
    public void destroy() {

    }

    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource urlBasedCorsConfigurationSource = new UrlBasedCorsConfigurationSource();
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        /*是否允许请求带有验证信息*/
        corsConfiguration.setAllowCredentials(false);
        /*允许访问的客户端域名*/
        corsConfiguration.addAllowedOrigin("*");
        /*允许服务端访问的客户端请求头*/
        corsConfiguration.addAllowedHeader("*");
        /*允许访问的方法名,GET POST等*/
        corsConfiguration.addAllowedMethod("*");
        urlBasedCorsConfigurationSource.registerCorsConfiguration("/**", corsConfiguration);
        return new CorsFilter(urlBasedCorsConfigurationSource);
    }
}