<button bindtap='preview'>簡歷預覽</button>

 //簡歷預覽
 preview: function () {
 var that = this;
 console.log("簡歷預覽")
 
//這里的value是先在data里面初始化，然后我根據用戶切換單選框，獲取的簡歷文件的主鍵id
 console.log(this.data.value)
 var id = that.data.value;

 if (id == "") {
 wx.showModal({
 title: '',
 content: '請選擇一份簡歷',
 showCancel: false,
 confirmColor: "#FFB100"
 })
 } else {

 //先通過簡歷的主鍵id,查詢簡歷路徑（大家可以根據自己的需求來傳數(shù)據）
 wx.request({
 url: app.globalData.url + "/api/interview/queryFilePath",
 data: {
  id: id
 },
 method: 'POST',
 header: { "content-type": "application/x-www-form-urlencoded" },
 success: function (res) {
  console.log(res.data)
  that.setData({
  path: res.data.path,
  type: res.data.type
  })
  //下載簡歷
  wx.downloadFile({
  url: app.globalData.url + that.data.path,
  success: function (res) {
  var filePath = res.tempFilePath
  console.log(filePath)

  //預覽簡歷
  wx.openDocument({
  filePath: filePath,
  fileType: that.data.type,
  success: function (res) {
   console.log("打開文檔成功")
   console.log(res);
  },
  fail: function (res) {
   console.log("fail");
   console.log(res)
  },
  complete: function (res) {
   console.log("complete");
   console.log(res)
  }
  })
  },
  fail: function (res) {
  console.log('fail')
  console.log(res)
  },
  complete: function (res) {
  console.log('complete')
  console.log(res)
  }
  })
 }
 })
 }
 },