wx.downloadFile({

url: ‘https://example?path=the_path&id=11111’,

success: function(res) {

let path = res.tempFilePath;

wx.saveImageToPhotosAlbum({

filePath: path,

success: function(res) {

wx.showModal({

title: “提示”,

content: “保存图片成功”,

showCancel: false

});

},

fail: function(res) {

wx.showModal({

title: “保存图片失败”,

content: res.errMsg,

showCancel: false

});

}

});

},

fail: function(res) {

wx.showModal({

title: “获取图片信息失败”,

content: res.errMsg,

showCancel: false

});

}

});