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;
}}