个人笔记

js图片预览：

function viewPic(id, imgId) {
    var reads = new FileReader();
    f = document.getElementById(id).files[0];
    if (f) {
        reads.readAsDataURL(f);
        reads.onload = function (e) {
            document.getElementById(imgId).src = this.result;
            $("#" + imgId).css("display", "block");
        };
    }
}

layui

function closeIframe() {
    var index = parent.layer.getFrameIndex(window.name);
    parent.layer.close(index);
    window.parent.location.reload();
}
跨域：springboot配置

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);
}