解决Vue访问Springboot后端跨域问题

柔光的暖阳◎ 2023-10-18 16:56 51阅读 0赞

###### 方法一：新增一个configration类 或 在Application中加入CorsFilter和CorsConfiguration方法 ######

import org.springframework.context.annotation.Bean;  
    import org.springframework.context.annotation.Configuration;  
    import org.springframework.web.cors.CorsConfiguration;  
    import org.springframework.web.cors.UrlBasedCorsConfigurationSource;  
    import org.springframework.web.filter.CorsFilter;  
      
    @Configuration  
    public class CorsConfig {
          
        private CorsConfiguration buildConfig() {
          
            CorsConfiguration corsConfiguration = new CorsConfiguration();  
            corsConfiguration.addAllowedOrigin("*"); // 1允许任何域名使用
            corsConfiguration.addAllowedHeader("*"); // 2允许任何头
            corsConfiguration.addAllowedMethod("*"); // 3允许任何方法（post、get等） 
            return corsConfiguration;  
        }  
      
        @Bean  
        public CorsFilter corsFilter() {
          
            UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();  
            source.registerCorsConfiguration("/**", buildConfig()); // 4  
            return new CorsFilter(source);  
        }  
    }

###### 方法二：使用Filter方式 ######

import javax.servlet.*;  
    import javax.servlet.http.HttpServletResponse;  
    import java.io.IOException;  
       
    @Component  
    public class CorsFilter implements Filter {
          
      
        final static org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(CorsFilter.class);  
     
        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");  
            System.out.println("*********************************过滤器被使用**************************");  
            chain.doFilter(req, res);  
        }  
        public void init(FilterConfig filterConfig) {
        }  
        public void destroy() {
        }  
    }

转自：[https://www.cnblogs.com/nananana/p/8492185.html][https_www.cnblogs.com_nananana_p_8492185.html]

[https_www.cnblogs.com_nananana_p_8492185.html]: https://www.cnblogs.com/nananana/p/8492185.html