获取本地json或者yaml等文件内容，展示在编辑框

<input type="file" class="file" @change="tirggerFile($event)">
<Button @click="readFile">上传</Button>

tirggerFile: function (event) {
　　　　　　　　　　//此处校验文件后缀
                var file = event.target.files[0]
                    .name; // (利用console.log输出看file文件对象) properties/xml/json/conf/config/data/ini/txt/yaml/yml/cfg 
                var num = file.split(‘.‘);
                var mun = num[num.length - 1];
                console.log(mun)
                if (mun == ‘ini‘ || mun == ‘properties‘ || mun == ‘xml‘ || mun == ‘json‘ || mun == ‘conf‘ || mun ==
                    ‘config‘ ||
                    mun == ‘data‘ || mun == ‘txt‘ || mun == ‘config‘ || mun == ‘yaml‘ || mun == ‘cfg‘) {
                    this.readFile();
                } else {
                    this.$Notice.error({
                        title: ‘请重新点击选择文件传入符合标准的文件‘,
                        duration: 2
                    });
                }
            },
            readFile() {
                let self = this;
                let fileselect = document.querySelector(‘input[type=file]‘).files[0]; //找到文件上传的元素        
                let reader = new FileReader()
                // console.log(fileselect);
                if (typeof FileReader === ‘undefined‘) {
                    alert(‘您的浏览器不支持FileReader接口‘);
                }
                reader.readAsText(fileselect, ‘gb2312‘) //注意读取中文的是用这个编码，不是utf-8
                reader.onload = function () {
                    console.log(reader.result);//文件内容
                   
                }
            },