回复图片失败
来源：
oog
2016-10-13
老师你好，我感觉我每部都做对了，但是图片在微信客户端就是接受不到。 现在我图文，一般的消息都能成功回复出去，就是5的图不行。输出结果如下图
upload url:https://api.weixin.qq.com/cgi-bin/media/upload?access_token=BOYIN9M57YLPbIgQEwM8M1tvnYfAvlxAVtHlJS-SAvrRoZ0q9TI35GBBA423G_rljKOgWf_64o7mAKSQQDOK_CTcXwzdd4UYZnweDcpC9S8eX0Yc8SQlnk11Zj9inRcCTFWcACAXJA&type=image
upload success:{"statusCode":200,"body":{"type":"image","media_id":"KMCavjDjR2piKM8Hk7QSXkKPLUttNdy1Vk5Dt5rk6u7gk2sWuy61rpHT_bB8mzRH","created_at":1476290700},"headers":{"connection":"close","content-type":"text/plain","date":"Wed, 12 Oct 2016 16:45:00 GMT","content-length":"118"},"request":{"uri":{"protocol":"https:","slashes":true,"auth":null,"host":"api.weixin.qq.com","port":443,"hostname":"api.weixin.qq.com","hash":null,"search":"?access_token=BOYIN9M57YLPbIgQEwM8M1tvnYfAvlxAVtHlJS-SAvrRoZ0q9TI35GBBA423G_rljKOgWf_64o7mAKSQQDOK_CTcXwzdd4UYZnweDcpC9S8eX0Yc8SQlnk11Zj9inRcCTFWcACAXJA&type=image","query":"access_token=BOYIN9M57YLPbIgQEwM8M1tvnYfAvlxAVtHlJS-SAvrRoZ0q9TI35GBBA423G_rljKOgWf_64o7mAKSQQDOK_CTcXwzdd4UYZnweDcpC9S8eX0Yc8SQlnk11Zj9inRcCTFWcACAXJA&type=image","pathname":"/cgi-bin/media/upload","path":"/cgi-bin/media/upload?access_token=BOYIN9M57YLPbIgQEwM8M1tvnYfAvlxAVtHlJS-SAvrRoZ0q9TI35GBBA423G_rljKOgWf_64o7mAKSQQDOK_CTcXwzdd4UYZnweDcpC9S8eX0Yc8SQlnk11Zj9inRcCTFWcACAXJA&type=image","href":"https://api.weixin.qq.com/cgi-bin/media/upload?access_token=BOYIN9M57YLPbIgQEwM8M1tvnYfAvlxAVtHlJS-SAvrRoZ0q9TI35GBBA423G_rljKOgWf_64o7mAKSQQDOK_CTcXwzdd4UYZnweDcpC9S8eX0Yc8SQlnk11Zj9inRcCTFWcACAXJA&type=image"},"method":"Post","headers":{"accept":"application/json","content-type":"multipart/form-data; boundary=--------------------------178037158051642397238963","content-length":443239}}}
here?
reply content:<xml>
<ToUserName><![CDATA[oxk0wvwjhJ-UhGr2CGND-VYrgIt0]]></ToUserName>
<FromUserName><![CDATA[gh_0628f885df72]]></FromUserName>
<CreateTime>1476290700742</CreateTime>
<MsgType><![CDATA[image]]></MsgType>
<Image>
<MediaId><![CDATA[KMCavjDjR2piKM8Hk7QSXkKPLUttNdy1Vk5Dt5rk6u7gk2sWuy61rpHT_bB8mzRH]]></MediaId>
</Image>
</xml>基于以上您可以看到，我上传是图片是成功的，返回的body中也包含了和上传一样的mediaid，并且返回的数据也和微信接口要求的一样。
这边还请您给予指导
下面是wechat.js
'use strict'
var Promise = require('bluebird');
var request = Promise.promisify(require('request'));
var util = require('../lib/util');
var fs = require('fs');
var prefix = 'https://api.weixin.qq.com/cgi-bin/';
var grant_type = 'client_credential';
//grant_type=client_credential&appid=APPID&secret=APPSECRET
function Wechat(opts){
var that = this;
this.appID = opts.appID;
this.appsecret = opts.appsecret;
this.getAccessToken = opts.getAccessToken;
this.saveAccessToken = opts.saveAccessToken;
//初始化的过程中就去把token拿到
this.fetchAccessToken()
}
//取得Access token
Wechat.prototype.fetchAccessToken = function (data){
var that = this;
//console.log('fetch this:'+that)
//先检查有没有合法的token，如果有的话直接返回
if (this.access_token && this.expires_in){
if (this.validateAccessToken(this)){
return Promise.resolve(this.access_token)
}
}
// if(this.validateAccessToken(that)){
// console.log('valid')
// return Promise.resolve(that.access_token);
// }
//console.log('should valid')
//get 方法是去读写在本地的token，如果本地的不好使了，那么调用update方法去微信服务器交换
return that.getAccessToken()
.then(function(data){
try{
data = JSON.parse(data);
}
catch(e){
return that.updateAccessToken();
}
if(that.validateAccessToken(data)){
console.log('data:2'+some)
return Promise.resolve(data);
}
else{
//var some = JSON.stringify(data);
//console.log('data:2'+some)
return that.updateAccessToken();
}
}).then( function(data){
that.access_token = data.access_token;
that.expires_in = data.expires_in;
that.saveAccessToken(data);
//返回token
return Promise.resolve(data.access_token);
})
}
Wechat.prototype.validateAccessToken = function (data){
var some = JSON.stringify(data);
console.log("some"+some);
if(!data || !data.access_token || data.expires_in){
return false
}
console.log("what");
var access_token = data.access_token;
var expires_in = data.expires_in;
var curTime = (new Date().getTime());
//console.log("time"+curTime);
//1476293619539
if(curTime < expires_in){
return true;
}else{
return false;
}
}
//上传材料
Wechat.prototype.uploadMaterial = function (type,filePath){
var that = this
//console.log('this1:'+this)
console.log('readfile path:'+filePath)
var formData = {
media: fs.createReadStream(filePath)
}
return new Promise(function (resolve, reject){
//console.log('this2:'+this)
that
.fetchAccessToken()
.then(function(data){
//console.log('that:'+data)
var method = 'upload';
var access_token = data;
var type = type;
var url = prefix+'media/'+method+'?'+'access_token='+access_token+'&type='+'image';
console.log('upload url:'+url);
request({method: 'Post',url: url,formData: formData,json: true })
.then( function(response){
//response contains full response of request
//console.log(response);
//console.log('request success:'+response.created_at);
var uploadc = JSON.stringify(response)
console.log('upload success:'+uploadc);
var _data = response;
//console.log(data);
if(_data){
resolve(_data);
}else{
throw new Error('upload uploadMaterial failed')
}
})
.catch(function(err){
reject(err);
})
})
})
}
Wechat.prototype.updateAccessToken = function (){
//console.log('upade')
var url = prefix+'token?'+'grant_type='+grant_type+'&appid='+this.appID+'&secret='+this.appsecret;
return new Promise(function (resolve, reject){
request({url:url, json: true }).then( function(response){
//response contains full response of request
//console.log(response);
var data = response;
var result = {
access_token:'',
expires_in:'',
}
//console.log(data);
var curTime = (new Date().getTime());
var expires_in = curTime + (data.body.expires_in - 20) * 1000;
result.expires_in = expires_in;
result.access_token = data.body.access_token;
resolve(result);
})
})
}
Wechat.prototype.reply = function (){
var content = this.body;
var message = this.weixinData;
//提取模板处理数据
var xml = util.tplM(content, message);
console.log('reply content:'+xml);
this.status = 200
this.type ='application/xml'
this.body = xml
}
module.exports = Wechat;我reply里面打印出来了输出消息包，正如你在shell输出里面看到的，消息没问题。
下面是回复的js
'use strict'
//实现微信的依据状况的 -- 消息路由
var config = require('../config/config')
var Wechat = require('../wechat/wechat')
var wechatApi = new Wechat(config.wechat);
var path = require('path')
exports.reply = function *(next){
var message = this.weixinData;
//console.log('message:'+message.Event);
//console.log('message event EventKey:'+message.EventKey);
if(message.MsgType ==='event'){
if(message.Event ==='subscribe'){
if(message.EventKey){
console.log('扫描二维码而来：'+message.Eventkey+''+message.ticket)
}
this.body = '宝贝你好，请输入：1，2，3，4其中之一 ';
}else if(message.Event ==='unsubscribe'){
console.log('撒有哪啦');
this.body ='无情取消关注'
}else if(message.Event ==='LOCATION'){
this.body = '你的位置是：'+ message.Latitude+'/'+message.Longtitude+'-'+message.EventKey;
}else if(message.Event ==='CLICK'){
this.body = '您点击了菜单：'+message.EventKey;
}else if(message.Event ==='SCAN'){
this.body = '谢谢扫描';
}
}else if (message.MsgType === 'text') {
var content = message.Content;
var reply = '你说的太复杂了:'+message.Content;
if(content ==='1'){
reply ='陆总你好'
}else if(content == '2'){
reply = '陆总你好2'
}else if(content == '3'){
reply = '陆总我睡了'
}
else if(content == '4'){
reply = [{
title:'电音之王',
description:'欢迎来到电音之王的世界',
picUrl:'http://img.xiami.net/images/collect/772/72/42220772_1425550553_vLXZ.jpg',
url:'www.baidu.com'
},{
title:'你好陆总',
description:'欢迎来到电音之王的世界哈哈',
picUrl:'http://img.xiami.net/images/collect/772/72/42220772_1425550553_vLXZ.jpg',
url:'www.baidu.com'
}]
}
else if(content == '5'){
//console.log('5+0')
var newpath = path.join(__dirname,'../config/aimage.jpg')
var uploadImage = yield wechatApi.uploadMaterial('image',newpath)
//console.log('5+1')
//console.log("id:"+show);
reply = {
type: 'image',
mediaId: uploadImage.body.media_id
}
}
this.body = reply
}
//console.log('A')
yield next
// console.log('B')
}再下面是g.js
'use strict'
var sha1 = require('sha1');
var Promise = require('bluebird');
//var request = Promise.promisify(require('request'));
var Wechat = require('./wechat');
var getRawBody = require('raw-body');
var util = require('../lib/util');
module.exports = function(opts, handler){
//实例化一个和wechat交互的对象
var wechat = new Wechat(opts);
return function *(next){//这个地方怎么用的还需要继续学习
var token = opts.token;
var signature = this.query.signature;
var nonce = this.query.nonce;
var timestamp = this.query.timestamp;
var echostr = this.query.echostr;
var str = [token,timestamp,nonce].sort().join('')
var sha = sha1(str)
//判断是否验证成功
if(sha === signature){
if(this.method === 'GET'){
this.body = echostr +'';
//console.log('this is a get method');
}else if(this.method === 'POST'){
var data = yield getRawBody(this.req, {
length: this.length,
limit: '1mb',
encoding:this.charset
})
data = yield util.parseXMLAsync(data);
// console.log(data);
//console.log('data.xml:'+data.xml)
// console.log('G')
data = yield util.formatMessage(data.xml);
//console.log(data);
this.weixinData = data;
//用外面传进来的weixinhandler处理具体的回复内容
//这个地方传入 next的目的？
//console.log('D')
yield handler.reply.call(this, next);
wechat.reply.call(this);
//解析请求，回复完毕后，处理回复的路由
}
}else{
this.body = 'wrong';
}
}
}写回答
2回答
-
好神奇，看代码，也没看出毛病。
打印出来的 xml 看着也没问题，但是这个 xml 应该是没有被正确回复给微信公众号，比如再发请求的时候断了，或者是测试公众号服务异常，或者是图片 id 不合法，或者是临时素材上传拿到的 id 服务器识别有问题，好吧，这大概是我能想到的可能性了，你切换到手机 4G 用笔记本连上手机 4G，在测试看看呢
022016-10-22 -
oog
提问者
2016-10-13
对了微信中显示 该公众号暂时无法提供服务，请稍后再试
042016-10-13
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