前端访问使用Tomcat启动的后端服务报跨域问题的解决办法

古城微笑少年丶 2022-11-14 13:18 8阅读 0赞

package com.test.chaosblade.config;
    
    import org.springframework.stereotype.Component;
    import javax.servlet.*;
    import javax.servlet.http.HttpServletResponse;
    import java.io.IOException;
    
    @Component
    public class CorsFilter implements Filter { 
    
        @Override
        public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { 
    //        HttpServletResponse response = (HttpServletResponse) res;
    //        HttpServletRequest req1 = (HttpServletRequest) req;
    //        String method = req1.getMethod();
    //        if ("OPTIONS".equalsIgnoreCase(method)) { 
    //            response.setHeader("Access-Control-Allow-Origin","*");
    //            Config appConfig = ConfigService.getAppConfig();
    //            String allowHeaders = appConfig.getProperty(ALLOW_HEADERS, "Origin, Content-Type, Accept, sessionid, app, attr, rcuuid");
    //            String exposeHeaders = appConfig.getProperty("Access-Control-Expose-Headers", "get, post, delete, common, put, patch, head, Content-type");
    //            response.setHeader("Access-Control-Allow-Headers", allowHeaders);
    //            response.setHeader("Access-Control-Expose-Headers", exposeHeaders);
    //            response.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, OPTIONS, DELETE, PATCH");
    //        } else { 
    //            chain.doFilter(req, res);
    //        }
    
            HttpServletResponse httpResponse = (HttpServletResponse) res;
            httpResponse.addHeader( "Access-Control-Allow-Origin" ,  "*" );
            httpResponse.setHeader( "Access-Control-Allow-Headers" ,  "Origin, X-Requested-With, Content-Type, Accept" );
            httpResponse.setHeader( "Access-Control-Allow-Methods" ,  "GET, PUT, DELETE, POST" );
            chain.doFilter(req, res);
        }
    
        @Override
        public void init(FilterConfig filterConfig) { }
    
        @Override
        public void destroy() { }
    }