可以把arrayBuffer转化为UTF-8编码的字符串，参考链接：https://github.com/nfroidure/utf-8，亲测有效。 //先安装npm npm install utf-8 //安装完别忘了工具->构建npm //在需要用到的地方导入 const UTF8 = require('../../miniprogram_npm/utf-8/index') Page({ ... }) //ArrayBuffer转UTF-8 let string = UTF8.getStringFromBytes([49, 46, 51, 36, 32, 126, ...]); //括号中要传入array数组格式的字节数据 //ArrayBuffer to array let arrayBuffer = new ArrayBuffer(10); let array = Array.prototype.slice.call(new Uint8Array(arrayBuffer)); //UTF-8转ArrayBuffe let arrayBuffer = UTF8.setBytesFromString('1.3$ ~= 1€', 2, null, true);