翻阅了官方的文档,找度娘问了前十页,自己想,尝试,终于有成果了。
官方的文档,确实有点简单了,对于初次接触,是挺费劲的。
本功能由html发起,执行选择图片,上传图片操作,php接收html页面post的来的参数,请求下载图片,保存到服务器,顺便把路径保存到数据库。
CSS部分:
<style type="text/css">
.body{font-size: 14px;}
#imageContainer{}
#imageContainer ul,#imageContainer ul li{margin: 0;padding: 0;}
#imageContainer ul li{width:30%;padding-left:3px;float: left;list-style: none;min-height: 160px;overflow: hidden;}
.content{margin-bottom: 20px;border-left:solid 1px #d9d9d9;border-right: solid 1px #d9d9d9; padding-top:5px;}
.content ul{min-height: 30px;height: auto;}
.content ul,.content ul li{margin:0;padding:0;}
.content ul li{float:left;width:75%;height: 30px;line-height:30px;list-style: none;font-size: 12px;
border-bottom:solid 1px #d9d9d9;}
.content ul li input[type=text]{width:90%;margin-left: 5px;border:solid 1px #d9d9d9;}
.btn{background-color: #01b5e9;border:solid 1px #0094bf;border-radius: 4px;height: 25px;line-height: 25px; color:#fff;text-align: center;}
.titlecontainer{border-bottom: solid 1px #d9d9d9;;}
.title{float: left;width:100px;border-top: 2px solid #0094bf;height: 30px;line-height: 30px;text-align: center;
border-left: solid 1px #d9d9d9;border-right:solid 1px #d9d9d9;color:#0094bf;font-weight: bold;}
.title_right{float: right;font-size: 14px;height: 30px;line-height: 30px;margin-right: 10px;}
.dia{font-size: 12px;}
/*width:100px;height: 30px;line-height:30px;border-radius: 5px;想弄个漂亮的提示框的
text-align: center;background-color: #000;color:#fff;filter:alpha(opacity=50); -moz-opacity:0.5;opacity:0.5;
position: fixed;z-index: 999;margin:0 auto;top:30%;left:37%;display: none;*/
</style>
HTML部分:
<div class="titlecontainer">
<div class="title">添加商品</div>
<div class="title_right">
<a style="text-decoration: none;color:#000;font-size: 12px;font-weight: bold;" href="http://abc.com/index.php?g=User&m=Img&a=index&token={pigcms:$_SESSION['token']}">查看所有商品</a>
</div>
<div style="clear: both;"></div>
</div>
<div class="content">
<ul>
<li style="width:25%;text-align: right;">商品标题:</li>
<li><input type="text" id="txtname" maxlength="20" /></li>
<li style="width:25%;text-align: right;">所属类别:</li>
<li><select id="seltype" style="margin-left: 5px;"><option value="">-请选择-</option></select></li>
<li style="width:25%;text-align: right;">商品详情:</li>
<li >
<div style="margin-top:2px;margin-left: 6px;">
<div class="btn" id="selpic" style="width:70px;float: left;">选择图片</div>
</div>
</li>
<div style="clear: both;"></div>
</ul>
</div>
<div class="btn" id="uploadImage" style="width:70px;margin:0 auto;">保存</div>
<div id="errormsg" class="dia"></div>
<div id="imageContainer" style="width:100%;margin-top:20px;">
<ul></ul>
</div>
JS部分:
<script>
//客户端6.0.2
wx.config({
//debug:true,
appId: "{pigcms:$signPackage.appId}",
timestamp: {pigcms:$signPackage.timestamp},
nonceStr: '{pigcms:$signPackage.nonceStr}',
signature: '{pigcms:$signPackage.signature}',
url : '{pigcms:$signPackage.url}',
jsApiList: [
'checkJsApi',
'chooseImage',
'previewImage',
'uploadImage',
'downloadImage'
]
});
wx.ready(function() {
// 1 判断当前版本是否支持指定 JS 接口,支持批量判断
wx.checkJsApi({
jsApiList: [
'chooseImage',
'previewImage',
'uploadImage',
'downloadImage',
'getNetworkType',
'openLocation',
'getLocation',
'downloadVoice'
],
success: function(res) {
//alert(JSON.stringify(res));
}
});
var images = {
localId: [],
serverId: [],
downloadId: []//可以无视
};
var xmlHttpRequest;
var accessToken=getCookie("accessToken");
//选择图片
document.getElementById("selpic").onclick = function() {
$("#errormsg").append("开始选择图片<br />");
wx.chooseImage({
count: 9, // 默认9
sizeType: ['compressed'], // 可以指定是原图还是压缩图,默认二者都有'original',
success: function(res) {
images.localId = res.localIds;// 返回选定照片的本地ID列表,localId可以作为img标签的src属性显示图片
jQuery(function(){
var imglist="";
$.each( res.localIds, function(i, n){//这里是显示已选择的图片
imglist+='<li ><img src="'+n+'" style="width:95%;height:150px;" /></li>';
//$("#errormsg").append("res.localIds:"+n+"<br />");
});
$("#imageContainer > ul").html(imglist);
});
}
});
}
document.querySelector("#uploadImage").onclick = function () {//绑定onclick事件,如果没有这个按钮,要注释掉代码,不然点击无效
$("#errormsg").show();
$("#errormsg").append("<br />开始上传图片");//下文对此div赋值,只为了直观的看到动态效果
if (images.localId.length == 0) {
alert('请先选择图片');
return;
}
images.serverId = [];
var localIds = images.localId;
uploadimg(localIds);
}
var currentproindex=0;
function getimgtoserver(serverIds){
//$("#errormsg").append("<br />serverIds length:"+serverIds.length+",");
var classid=$("#seltype").val();
var classname=encodeURI($("#seltype option:selected").text());//传汉字需要转一下,php那边再翻转一下就好了
var serverId=serverIds.pop();//很微妙的方法,每次从数组取一个
var proname=encodeURI($("#txtname").val());
var newurl="http://ab.com/i_product.php?action=getwximg&proname="+proname+"&classid="+classid+"&classname="+classname+"&proindex="+currentproindex+"&uname={pigcms:$_SESSION['uname']}&uid={pigcms:$_SESSION['uid']}&token={pigcms:$_SESSION['token']}&wxurl=http://file.api.weixin.qq.com/cgi-bin/media/get&random="+Math.random()+"&accesstoken="+accessToken+"&mediaid="+serverId;//这里拼接地址,给服务器传参,下载图片需要在服务端处理,js请求存在跨域问题,并且,微信里,jq的初始xmlHttpRequest不能用,只能手写了,难道是我不会用jq?
//$("#errormsg").append("<br />"+newurl);
//$("#errormsg").append("<br />serverId:"+serverId)
xmlHttpRequest.open("POST",newurl,true);//防止参数过长,还是用post方法吧
xmlHttpRequest.onreadystatechange=function(){
if (xmlHttpRequest.readyState==4){
if(xmlHttpRequest.status==200){
if(serverIds.length>0){
currentproindex+=1;
getimgtoserver(serverIds);//递归调用,等本次成功,再开始第二个图片的上传操作
}
else{
$("#errormsg").append("<br />上传成功");
}
//$("#errormsg").append("<br />"+xmlHttpRequest.responseText);
}
else{
$("#errormsg").append(xmlHttpRequest.status);
}
}
else if(xmlHttpRequest.readyState==1){
//$("#errormsg").append("<br />初始化成功");
}
else if(xmlHttpRequest.readyState==2){
$("#errormsg").append("<br />正在发送数据");
}
else if(xmlHttpRequest.readyState==3){
$("#errormsg").append("<br />正在等待服务器反馈");
}
else{
$("#errormsg").append("发生错误了。");//+xmlHttpRequest.responseText);
}
}
xmlHttpRequest.send();
}
function uploadimg(localIds){
//$("#errormsg").append("<br />localIds length:"+localIds.length);
var localId = localIds.pop();
wx.uploadImage({
localId: localId,
// isShowProgressTips: 1,
success: function (res) {
images.serverId.push(res.serverId);
//$("#errormsg").append("<br />"+res.serverId+",");
if(localIds.length > 0){
uploadimg(localIds);
}
else{
if(window.XMLHttpRequest){
xmlHttpRequest=new XMLHttpRequest();
}else{
xmlHttpRequest=new ActiveXObject("MSXML2.XMLHTTP.3.0");//("Microsoft.XMLHTTP");
}
$("#errormsg").append("<br />准备处理,请等待...");
var serverIds=images.serverId;
getimgtoserver(serverIds);
}
},
fail: function (res) {
alert("上传失败,请稍候重试");
}
});
}
});
wx.error(function(res) {
alert(res.errMsg);
});
//读取cookies
function getCookie(name)
{
var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
if(arr=document.cookie.match(reg))
return (arr[2]);
else
return null;
}
function initsel(){
var url="http://abc.com/chat/i_product.php?action=getclothestype&token={pigcms:$_SESSION['token']}";
//alert(url);
$.getJSON(url,function(data){
var str="<option value=''>-请选择-</option>";
if(data.length>0){
for(i=0;i<data.length;i++){
str+="<option value='"+data[i].id+"'>"+data[i].name+"</option>"
}
}
$("#seltype").html(str);
});
}
$(function(){
initsel();//初始化下拉菜单
});
</script>
PHP服务端代码:
$act = $_GET['action'];
if ($act == 'getwximg') {
$wxurl=$_GET['wxurl'];
$access_token=$_GET['accesstoken'];
$media_id=$_GET['mediaid'];
$newurl=$wxurl."?access_token=".$access_token."&media_id=".$media_id;//用php去请求获取图片的接口,js直接调用存在跨域问题
$token=$_GET['token'];
$uid=$_GET['uid'];
$uname=$_GET['uname'];
$proindex=$_GET['proindex'];
$classid=$_GET['classid'];
$classname=urldecode($_GET['classname']);//取到的汉字,翻转一下
$proname=urldecode($_GET['proname']);
$fileInfo = downloadWeixinFile($newurl);//通过接口,取结果
$filename = date("ymdhis",time()).".jpg";//图片名称
$time = time();
$newfolder="uploads/".date("y-m-d",$time)."/";//文件夹名称
saveWeixinFile($newfolder,$filename, $fileInfo["body"]);//把取到的base64代码,保存成图片
//echo $newurl;
if($proindex==0){//因为图片是一次性上传的,这里判断一下,第一张作为产品的封面,剩下的作为产品的描述
$query = "INSERT INTO tp_img(uid,uname,token,createtime,uptatetime,classid,classname,title,pic) VALUE('".$uid."','".$uname."','".$token."','".$time."','".$time."',".$classid.",'".$classname."','".$proname."','http://abc.com/chat/".$newfolder.$filename."')";
//$query = "INSERT INTO t_ChatMessage(UserCode,Contents,ToUser,IsRead) VALUE('$sendid', '$msg','$toid','0')";
$result = mysql_query($query) or die("{\"error\":true,\"errorMsg\":\"Error in query: $query. " . mysql_error()."\"}");
}
else{
$query ="select * from tp_img where token='".$token."' order by uptatetime desc limit 1";
$result = mysql_query($query) or die("{\"error\":true,\"errorMsg\":\"Error in query: $query. " . mysql_error()."\"}");
$items = array();
while($row = mysql_fetch_array($result)){
array_push($items, ($row));
$query_update="update tp_img set info=CONCAT(info,'','<div style=\"margin-top:3px;\"><img src=\"http://abc.com/chat/".$newfolder.$filename."\" /></div>') where id=$row[id]";//在产品描述的字段上追加内容
mysql_query($query_update);
}
}
//echo "{\"error\":\""+$rtmsg+"\"}";
}
同一个文件下的函数:
function downloadWeixinFile($url)
{
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_NOBODY, 0); //只取body头
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$package = curl_exec($ch);
$httpinfo = curl_getinfo($ch);
curl_close($ch);
$imageAll = array_merge(array('header' => $httpinfo), array('body' => $package));
return $imageAll;
}
function saveWeixinFile($newfolder,$filename, $filecontent)
{
createFolder($newfolder);
$local_file = fopen($newfolder."/".$filename, 'w');
if (false !== $local_file){
if (false !== fwrite($local_file, $filecontent)) {
fclose($local_file);
}
}
}
function createFolder($path)
{
if (!file_exists($path))
{
createFolder(dirname($path));
mkdir($path, 0777);
}
}