springboot解决跨域问题

在项目的启动文件Application的同级下创建AppWebMvcConfigurer

使之继承 WebMvcConfigurerAdapter

@Configuration
public class AppWebMvcConfigurer extends  WebMvcConfigurerAdapter{
@Bean
    public FilterRegistrationBean corsFilterRegistration() {
        FilterRegistrationBean registration = new FilterRegistrationBean();
        registration.setFilter(corsFilter());
        registration.addUrlPatterns("/*");
        registration.setName("corsFilter");
        registration.setOrder(Ordered.HIGHEST_PRECEDENCE);
        return registration;
    }
@Bean
    public Filter corsFilter() {
        return new CorsFilter();
    }
}

之后添加CorsFilter 类，实现过滤规则 如Ip 端口之类的

ublic class CorsFilter implements Filter {


public void init(FilterConfig filterConfig) throws ServletException {


}


public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
String method = ((HttpServletRequest) request).getMethod();
HttpServletResponse res = (HttpServletResponse) response;


String host = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort();
res.addHeader("host", host);
res.addHeader("Access-Control-Expose-Headers","Roleplay-Error-Code");
res.addHeader("Access-Control-Allow-Origin", "*");
res.addHeader("Access-Control-Allow-Methods", "GET,POST,PUT,DELETE,OPTIONS");
res.addHeader("Access-Control-Allow-Credentials", "true");
res.addHeader("Access-Control-Allow-Headers",
 "Origin, Content-Type, Accept, Authorization, x-requested-with, cache-control, Access-Control-Allow-Origin, Access-Control-Allow-Credentials, uuid");


if (method.equals("OPTIONS")) {
res.setStatus(HttpServletResponse.SC_OK);
}else {
chain.doFilter(request, response);
}


}


public void destroy() {


}
}

通过项目web访问后台获得数据

springboot跨域即可完成