微信小程序向服务器上传图片的代码全解析

-wxml

 <view class="shangchuan" bindtap="choose">

  <image style="width:100%;height:100%;" src="{{tempFilePaths}}"></image>

 </view>

 <button formType=&#39;submit&#39; class="fabu">发布项目</button>

 /**选择图片 */

 choose: function () {

  var that = this

  wx.chooseImage({

   count: 1,

   sizeType: ['original', 'compressed'], // 可以指定是原图还是压缩图，默认二者都有

   sourceType: ['album', 'camera'], // 可以指定来源是相册还是相机，默认二者都有

   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 原图，compressed 压缩图，默认二者都有

   sourceType: [], // album 从相册选图，camera 使用相机，默认二者都有

   success: function (res) {

    console.log(res);

    var array = res.tempFilePaths, //图片的本地文件路径列表

   }

  })

wx.uploadFile({

   url: '', //开发者服务器的 url

   filePath: '', // 要上传文件资源的路径 String类型！！！

   name: 'uploadFile', // 文件对应的 key ,(后台接口规定的关于图片的请求参数)

   header: {

    'content-type': 'multipart/form-data'

   }, // 设置请求的 header

   formData: { }, // HTTP 请求中其他额外的参数

   success: function (res) {

   },

   fail: function (res) {

   }

  })

// 点击上传图片

upShopLogo: function () {

  var that = this;

  wx.showActionSheet({

   itemList: ['从相册中选择', '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) {

/*上传单张

    that.data.orderDetail.shopImage = res.tempFilePaths[0],

    that.upload_file(API_URL + 'shop/shopIcon', res.tempFilePaths[0])

*/

 /*上传多张（遍历数组，一次传一张）

    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'

   }, // 设置请求的 header

   formData: { 'shopId': wx.getStorageSync('shopId') }, // HTTP 请求中其他额外的 form data

   success: function (res) {

    wx.showToast({

       title: "图片修改成功",

       icon: 'success',

       duration: 700

      })

   },

   fail: function (res) {

   }

  })

 },