微信小程序预览文件 兼容性苹果

uni.request({url: url,method: 'GET',header: {'Authorization': token,responseType: 'blob',},responseType: "arraybuffer",success: (res) => {uni.hideLoading()const fs = wx.getFileSystemManager(); //获取全局唯一的文件管理器let index = url.lastIndexOf(".");const typeRp = url.slice(index, url.length);let fileType = url.slice(index + 1, url.length);var platform = wx.getSystemInfoSync();if (platform.platform === "ios") {if (fileType == 'xls') {fileType = fileType + 'x'}}const filePath = `${wx.env.USER_DATA_PATH}/preview${typeRp}`;fs.writeFile({filePath,data: res.data,encoding: "binary", //二进制流文件必须是 binarysuccess(res) {uni.hideLoading()// console.log(res, '写入成功', typeRp, fileType);fs.access({path: filePath,success: () => {wx.openDocument({filePath,fileType,showMenu: true,success: function(res) {setTimeout(() => {wx.hideLoading();}, 500);},});},fail: (err) => {uni.hideLoading()},});},});},fail: (err) => {uni.hideLoading()},})

如果是苹果系统就需要修改一下后缀

var platform = wx.getSystemInfoSync();if (platform.platform === "ios") {if(fileType == 'xls') {fileType = fileType + 'x'}}