


WeChat applet development picture uploading + server receiving tutorial
This time I will introduce the commonly used image uploading in mini programs.
I made the image upload function a few days ago, but I was fooled. Next, let’s take a look at WeChat’s upload API.
The filePath here is the storage path of the image, and the type is actually a String, which means that only one image can be transmitted at a time. My previous interface received an array. I myself am a half-experienced PHP user, so I can only change the interface for receiving images by myself.
Look at the page renderings
A very common effect of modifying the avatar is to select a picture (take a photo) and then upload it.
The following is the code
The first is the wxml code of the mini program
<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>
I will not post the css code, just some styles.
Corresponding JS code
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(){ }) }, 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') } } } }) }, 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], }) } }) } })
Mainly explain the JS code
1, chooseImageTap method
is used to display a method for selecting pictures and taking pictures The pop-up window uses the showActionSheet, a page interactive api of WeChat. Click to view the detailed usage
Display the operation menu
2, chooseWxImage method
Mainly It is a monitor used to select pictures and receive picture path callbacks. Click to view detailed usage
Select pictures from the local album or use the camera to take pictures
3. Upload
In the success callback of the chooseWxImage method, we can see that I assigned the returned image path res.tempFilePaths[0] to the logo. Next, we only need to call the upload method. WeChat’s uploadFile method is encapsulated by me. After a while it became upload_file.
uploadFile method
//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':'multipart/form-data' }, // 设置请求的 header 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 is the logo variable we passed in in upload_file, which is the absolute path of the image.
Server’s image receiving code
Anyone who has read my previous article on the login process is familiar with the fact that my server uses the PHP framework Laravel.
Here I will only post the code for receiving the image;
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']; }
The core method is in upload_log.
Picture Receiving and Saving
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['mday']; $logo_path = sprintf("%s/%s/%s/%s",$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"];////获取图片的宽 $height=$image_size["1"];///获取图片的高 if($pre_name == "baby" || $pre_name == "video") { $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; } }
This code format is really annoying, so I just sorted it out.
In this way, we have started to get started with the image upload and interface functions of the mini program.
The above is the content of the image uploading + server receiving tutorial for WeChat applet development. For more related content, please pay attention to the PHP Chinese website (www.php.cn)!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics











Xianyu's official WeChat mini program has quietly been launched. In the mini program, you can post private messages to communicate with buyers/sellers, view personal information and orders, search for items, etc. If you are curious about what the Xianyu WeChat mini program is called, take a look now. What is the name of the Xianyu WeChat applet? Answer: Xianyu, idle transactions, second-hand sales, valuations and recycling. 1. In the mini program, you can post idle messages, communicate with buyers/sellers via private messages, view personal information and orders, search for specified items, etc.; 2. On the mini program page, there are homepage, nearby, post idle, messages, and mine. 5 functions; 3. If you want to use it, you must activate WeChat payment before you can purchase it;

Implementing picture filter effects in WeChat mini programs With the popularity of social media applications, people are increasingly fond of applying filter effects to photos to enhance the artistic effect and attractiveness of the photos. Picture filter effects can also be implemented in WeChat mini programs, providing users with more interesting and creative photo editing functions. This article will introduce how to implement image filter effects in WeChat mini programs and provide specific code examples. First, we need to use the canvas component in the WeChat applet to load and edit images. The canvas component can be used on the page

To implement the drop-down menu effect in WeChat Mini Programs, specific code examples are required. With the popularity of mobile Internet, WeChat Mini Programs have become an important part of Internet development, and more and more people have begun to pay attention to and use WeChat Mini Programs. The development of WeChat mini programs is simpler and faster than traditional APP development, but it also requires mastering certain development skills. In the development of WeChat mini programs, drop-down menus are a common UI component, achieving a better user experience. This article will introduce in detail how to implement the drop-down menu effect in the WeChat applet and provide practical

The official WeChat mini program of Xianyu has been quietly launched. It provides users with a convenient platform that allows you to easily publish and trade idle items. In the mini program, you can communicate with buyers or sellers via private messages, view personal information and orders, and search for the items you want. So what exactly is Xianyu called in the WeChat mini program? This tutorial guide will introduce it to you in detail. Users who want to know, please follow this article and continue reading! What is the name of the Xianyu WeChat applet? Answer: Xianyu, idle transactions, second-hand sales, valuations and recycling. 1. In the mini program, you can post idle messages, communicate with buyers/sellers via private messages, view personal information and orders, search for specified items, etc.; 2. On the mini program page, there are homepage, nearby, post idle, messages, and mine. 5 functions; 3.

WeChat applet implements picture upload function With the development of mobile Internet, WeChat applet has become an indispensable part of people's lives. WeChat mini programs not only provide a wealth of application scenarios, but also support developer-defined functions, including image upload functions. This article will introduce how to implement the image upload function in the WeChat applet and provide specific code examples. 1. Preparatory work Before starting to write code, we need to download and install the WeChat developer tools and register as a WeChat developer. At the same time, you also need to understand WeChat

Use the WeChat applet to achieve the carousel switching effect. The WeChat applet is a lightweight application that is simple and efficient to develop and use. In WeChat mini programs, it is a common requirement to achieve carousel switching effects. This article will introduce how to use the WeChat applet to achieve the carousel switching effect, and give specific code examples. First, add a carousel component to the page file of the WeChat applet. For example, you can use the <swiper> tag to achieve the switching effect of the carousel. In this component, you can pass b

To implement the picture rotation effect in WeChat Mini Program, specific code examples are required. WeChat Mini Program is a lightweight application that provides users with rich functions and a good user experience. In mini programs, developers can use various components and APIs to achieve various effects. Among them, the picture rotation effect is a common animation effect that can add interest and visual effects to the mini program. To achieve image rotation effects in WeChat mini programs, you need to use the animation API provided by the mini program. The following is a specific code example that shows how to

Implementing the sliding delete function in WeChat mini programs requires specific code examples. With the popularity of WeChat mini programs, developers often encounter problems in implementing some common functions during the development process. Among them, the sliding delete function is a common and commonly used functional requirement. This article will introduce in detail how to implement the sliding delete function in the WeChat applet and give specific code examples. 1. Requirements analysis In the WeChat mini program, the implementation of the sliding deletion function involves the following points: List display: To display a list that can be slid and deleted, each list item needs to include
