微信小程序怎樣使圖片上傳至服務器

-wxml
 <view class="shangchuan" bindtap="choose">
 <image style="width:100%;height:100%;" src="{{tempFilePaths}}"></image>
 </view>
 <button formType='submit' class="fabu">發布項目</button>
 /**選擇圖片 */
 choose: function () {
 var that = this
 wx.chooseImage({
 count: 1,
 sizeType: ['original', 'compressed'], // 可以指定是原圖還是壓縮圖，默認二者都有
 sourceType: ['album', 'camera'], // 可以指定來源是相冊還是相機，默認二者都有
 success: function (res) {
 var tempFilePaths = res.tempFilePaths
 that.setData({
 tempFilePaths: res.tempFilePaths
 })
 console.log(res.tempFilePaths)
 wx.setStorage({ key: "card", data: tempFilePaths[0] })
 }
 })
 },

 formSubmit2: function (e) {
 var that = this
 var card = wx.getStorageSync('card')
 wx.uploadFile({
 url: app.globalData.create_funds,
 filePath: card,
 name: 'card',
 formData: {
 'user_id': app.globalData.user_id,
 'person': e.detail.value.person,
 'company': e.detail.value.company,
 },
 success: function (res) {
 console.log(res)
 }
 })
 }
 }
 },

wx.chooseImage({
 sizeType: [], // original 原圖，compressed 壓縮圖，默認二者都有
 sourceType: [], // album 從相冊選圖，camera 使用相機，默認二者都有
 success: function (res) {
 console.log(res);
 var array = res.tempFilePaths, //圖片的本地文件路徑列表
 }
 })

wx.uploadFile({
 url: '', //開發者服務器的 url
 filePath: '', // 要上傳文件資源的路徑 String類型！！！
 name: 'uploadFile', // 文件對應的 key ,(后臺接口規定的關于圖片的請求參數)
 header: {
 'content-type': 'multipart/form-data'
 }, // 設置請求的 header
 formData: { }, // HTTP 請求中其他額外的參數
 success: function (res) {
 },
 fail: function (res) {
 }
 })

// 點擊上傳圖片
upShopLogo: function () {
 var that = this;
 wx.showActionSheet({
 itemList: ['從相冊中選擇', '拍照'],
 itemColor: "#f7982a",
 success: function (res) {
 if (!res.cancel) {
 if (res.tapIndex == 0) {
 that.chooseWxImageShop('album') 
 } else if (res.tapIndex == 1) {
 that.chooseWxImageShop('camera')
 }
 }
 }
 })
 },
 chooseWxImageShop: function (type) {
 var that = this;
 wx.chooseImage({
 sizeType: ['original', 'compressed'],
 sourceType: [type],
 success: function (res) {
/*上傳單張
 that.data.orderDetail.shopImage = res.tempFilePaths[0],
 that.upload_file(API_URL + 'shop/shopIcon', res.tempFilePaths[0])
*/
 /*上傳多張（遍歷數組，一次傳一張）
 for (var index in res.tempFilePaths) {
 that.upload_file(API_URL + 'shop/shopImage', res.tempFilePaths[index])
 }
*/
 }
 })
 },
upload_file: function (url, filePath) {
 var that = this;
 wx.uploadFile({
 url: url,
 filePath: filePath,
 name: 'uploadFile',
 header: {
 'content-type': 'multipart/form-data'
 }, // 設置請求的 header
 formData: { 'shopId': wx.getStorageSync('shopId') }, // HTTP 請求中其他額外的 form data
 success: function (res) {
 wx.showToast({
 title: "圖片修改成功",
 icon: 'success',
 duration: 700
 })
 },
 fail: function (res) {
 }
 })
 },