小程序下载更改文件类型

lookDetails: function (e) {

commom.commom.sendFormId(e.detail.formId);

let ext = e.detail.target.dataset.ext;

if (wx.getStorageSync('filePath')){

let fileMgr = wx.getFileSystemManager();

let oldType = wx.getStorageSync("fileType");

fileMgr.unlink({

filePath: wx.env.USER_DATA_PATH + '/file.' + ext,

success: function (r) {

console.log('remove save file. success.', r);

},

fail: function (r) {

console.log('remove save file.', r);

}

});

}

if (ext != 'png' && ext != 'jpg') {

wx.downloadFile({

url: e.detail.target.dataset.url,

header: {

"content-type": 'application/' + ext

},

filePath: wx.env.USER_DATA_PATH + '/file.' + ext,

success(res) {

const filePath = wx.env.USER_DATA_PATH + '/file.' + ext

wx.openDocument({

filePath,

success(res) {

console.log('打开文档成功');

wx.setStorageSync('filePath', wx.env.USER_DATA_PATH + '/file.' + ext)

},

fail(res) {

commom.commom.noIconToast('证书打开失败,请发送到邮件查看')

}

})

},

complete: function (err) {

console.log(err)

}

})

} else {

wx.previewImage({

urls: [e.detail.target.dataset.url] // 需要预览的图片http链接列表

})

}

},

转载于:https://www.cnblogs.com/NONONAME/p/10955498.html