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微信小程序---图片上传+服务端接受

2017-03-06 19:22 696 查看
原文地址:http://blog.csdn.net/sk719887916/article/details/54312573

微信小程序,图片上传,应用地方-修改用户信息的头像。



详细代码:

小程序的wxml代码

<view class="xd-container">
<form bindsubmit="bindSaveTap">
<image  class="xd-img-user1" catchtap="chooseImageTap" src="{{logo}}"></image>
<view class="xd-view-section">
<text class="xd-abs xd-flex-left xd-text-nick">昵称</text>
<input name="nick_name" placeholder="请输入昵称" class="xd-input" value="{{userInfo.user_name}}"/>
</view>
<view class="xd-view-section1">
<text class="xd-abs xd-flex-left xd-text-nick">宝宝性别</text>
<radio-group class="xd-abs xd-radio-group" name="baby_sex">
<label class="xd-label-radio" wx:for="{{sex_items}}" wx:key="item">
<radio color="#3cc975" value="{{item.name}}" wx:if="{{item.name==userInfo.baby_sex}}" checked="true"/>
<radio color="#3cc975" value="{{item.name}}" wx:else checked="false"/>
<text class="xd-radio-text">{{item.value}}</text>
</label>
</radio-group>
</view>
<view class="xd-view-section1">
<text class="xd-abs xd-flex-left xd-text-nick">宝宝年龄</text>
<input  placeholder="请输入年龄" wx:if="{{userInfo.baby_age != 0}}" value="{{userInfo.baby_age}}" class="xd-input"/>
<input name="baby_age" placeholder="请输入年龄" wx:else value="" class="xd-input"/>
</view>
<button  size="default" class="xd-abs xd-subBtn" formType="submit" hover-class="xd-subBtn-hover">保存</button>
</form>
</view>


小程序对应的js代码

var util = require('../../../utils/util.js')
var app = getApp()
Page({
data: {
  sex_items: [
  {name:'1', value:'小王子'},
  {name:'2', value:'小公主'},
  {name:'0', value:'尚无'}
  ],
  logo:null,
  userInfo: {}
 },
//事件处理函数
bindViewTap: function() {
   wx.navigateTo({
  // url: '../logs/logs'
    // url: '../load/load'
})
},
onLoad: function () {
    console.log('onLoad')
    var that = this
    //调用应用实例的方法获取全局数据
    app.getUserInfo(function(userInfo){
    //更新数据
    console.log(userInfo);
    that.setData({
     userInfo:userInfo,
     logo:userInfo.logo
     })
    })
},
bindSaveTap: function(e){
    console.log(e)
    var formData = {
    uid:util.getUserID(),
    user_name:e.detail.value.nick_name,
    baby_sex:e.detail.value.baby_sex,
    baby_age:e.detail.value.baby_age
    }
   console.log(formData)
    app.apiFunc.upload_file(app.apiUrl.modify_user, this.data.logo, 'photos', formData,
    function(res){
    console.log(res);
    },
    function(){
    })
},
 //用来显示一个选择图片和拍照的弹窗,用到了微信的一个页面交互的api showActionSheet 
chooseImageTap: function(){
    let _this = this;
    wx.showActionSheet({
    itemList: ['从相册中选择', '拍照'],
    itemColor: "#f7982a",
    success: function(res) {
    if (!res.cancel) {
    if(res.tapIndex == 0){
    _this.chooseWxImage('album')
    }else if(res.tapIndex == 1){
    _this.chooseWxImage('camera')
    }
    }
    }
    })
},
//主要是用来选择图片以及接收图片路径回调的监听
chooseWxImage:function(type){
   let _this = this;
   wx.chooseImage({
    sizeType: ['original', 'compressed'],
    sourceType: [type],
    success: function (res) {
    console.log(res);
    _this.setData({
    logo: res.tempFilePaths[0],
    })
    }
  })
}
})


上传:

在chooseWxImage方法的success回调中我们可以看到,我把返回的图片路径res.tempFilePaths[0]赋值给logo,下面只需要调用upload方法就可以了。

封装好的upload_file方法。

//上传文件
function upload_file(url,filePath,name,formData,success,fail){
  console.log('a='+filePath);
  wx.uploadFile({
    url:rootUrl+url,
    filePath:filePath,
    name:name,
    header:{
      'content-type':'nultipart/form-data'
    },
    formData:formData,  //http请求中其他额外的form data
    success: function(res){
      console.log(res);
      if(res.statusCode == 200 && !res.data.result_code){
         typeof success == "function" && success(res.data);
      }else{
        typeof fail == "function" && fail(res);
      }
    },
    fail: function(res){
      console.log(res);
      typeof fail == "function" && fail(res);
    }
  })
}


filePath就是upload_file中我们传进来的logo变量,也就是图片的绝对路径。

服务器接收图片的代码

if(!empty($_FILES['photos'])){
  $up_arr['logo'] = upload_logo('photos','manage/images/user','logo',$user_id,0);
  $up_arr['logo'] = $up_arr['logo'][0];
  $user_info['logo'] = $Server_Http_Path.$up_arr['logo'];
}


核心方法在upload_log中。

图片接收保存代码

if( !function_exists('upload_logo')){
  function upload_logo( $key_name='photos',$logo_path='manage/images/nurse',$pre_name='logo',$salt='20160101',$encode=1,$make=0 ){
    $result_arr = array();
    global $Server_Http_Path,$App_Error_Conf;
    //分文件夹保存
    $date_info = getdate();
    $year = $date_info['year'];
    $mon = $date_info['mon'];
    $day = $date_info['day'];
    $logo_path = sprintf("%s%s%s%s",$logo_path,$year,$mon,$day);
    if(!is_dir($logo_path)){
      $res = mkdir($logo_path,0777,true);
    }
    //图片上传
    foreach($photos as $key => $photo){
      $photo = $_FILES['photos'];
      $name = $key_name;
      $file_id = Input::file($name);
      if(!empty($file_id) && $file_id -> isValid()){

        $entension = $file_id -> getClientOriginalExtension();
if($pre_name == 'baby'){
$new_name = $pre_name . "_" . intval($salt) ."_" .time() . "_" . salt_rand(2,2);
}else {
$new_name = $pre_name . "_" . intval($salt) ."_" . salt_rand(2,2);
}
$path_id = $file_id -> move($logo_path,$new_name."_b.".$entension);
if(!empty($path_id)){
$path_name = $path_id->getPathName();
$image_size=getimagesize($path_name);
              $weight=$image_size["0"];
$height=$image_size["1"];
//获取图片的高
              $photo_info['url']    = $path_name;
              $photo_info['width']  = $weight;
              $photo_info['height'] = $height;
              $result_arr[] = $photo_info;

      }else{
      $result_arr[] = $path_name;
    }

//处理图片
if($make == 1){
$img = Image::make($path_name)->resize(200, $height*200/$weight);
$img->save($logo_path ."/".$new_name."_s.".$entension);
//dd($img);
//  return $img->response('jpg');
}
}
if(empty($result_arr)){
$response['result_code'] = -1006;
$response['result_msg'] = $App_Error_Conf[-1006];
return response($response);
}
if($encode == 1){
$result_arr = json_encode($result_arr);
}
}
return $result_arr;
}

}
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