spring boot 跨域问题（sessionid不一致 已解决）

现象：Spring boot验证码接口与登录接口的sessionid不一致

解决方法：

WebConfig中添加如下代码：

@Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOrigins("*")
                .allowedMethods("GET", "HEAD", "POST", "PUT", "DELETE", "OPTIONS")
                .allowCredentials(true)
                .maxAge(3600)
                .allowedHeaders("*");
    }

WebConfig完整代码如下：

@Slf4j
@Configuration
public class WebConfig implements WebMvcConfigurer {
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
    //    registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
        registry.addResourceHandler("/**").addResourceLocations("classpath:/static/");
    }

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOrigins("*")
                .allowedMethods("GET", "HEAD", "POST", "PUT", "DELETE", "OPTIONS")
                .allowCredentials(true)
                .maxAge(3600)
                .allowedHeaders("*");
    }

}

前端在ajax中添加对应代码如下

xhrFields: {
                    withCredentials: true
                }

ajax完整代码如下：

login: function (event) {
			var data = "username="+vm.username+"&password="+vm.password+"&captcha="+vm.captcha;
			$.ajax({
				type: "POST",
			    url: "http://localhost:8085/cast_lbs/user/login",
			    data: data,
			    dataType: "json",
			    success: function(result){
					if(result.code == 0){//登录成功
						parent.location.href =index.html;
					}else{
						vm.error = true;
						vm.errorMsg = result.msg;
						
						vm.refreshCode();
					}
				},
                xhrFields: {
                    withCredentials: true
                }
			});
		}

相关原理参考：阮一峰的网络日志->跨域资源共享 CORS 详解