大部分是正常的，小部分非正常

 wx.downloadFile({

      url: "https://sjcx.dg.cn/uploads/20201207/27571956120ad946d9074a4bce7c433e.docx",

      success: res => {

          const filePath = res.tempFilePath;

          wx.openDocument({

               filePath: filePath,

               success: function (res) {

                  // console.log("打开文档成功")

               },

               fail: function (res) {

                  wx.showToast({title: '打开文档失败', icon: 'none', duration: 2000})

               },

          })

       },

       fail: res => {

           console.log(res);

       },

 });