Question

我正在尝试从memcached加载数据（编辑：使用nodejs memcached包），但我不断回头：

{ available_ads: &lt;Buffer 5b 7b 22 69 64 22 3a 37 31 34 31 35 2c 22 74 69 74 6c
65 22 3a 22 44 6f 6c 6c 61 72 53 68 61 76 65 43 6c 75 62 2e 63 6f 6d 22 2c 22 73
75 62 74 69 74 6c ...&gt;, cas: '2' }

我对memcached知之甚少，所以也许是因为字符无效。这是telnet的输出：

[{"id":71415,"title":"DollarShaveClub.com","subtitle":"","body":"Our Blades Are F***ing Great","click_url":"http:\/\/b.v11media.com\/click?k=eeacbb44ecf52873acd8cfbe63ffdbea&uid=111&ip_list=%5B%2298.143.242.51%22%2C%2210.122.186.15%22%5D&o=71415&src=json","image_url":"http:\/\/img.youtube.com\/vi\/ZUG9qYTJMsI\/0.jpg","cpa":"1","engagement_type":1,"image_width":480,"image_height":360,"currency":"","gender":null,"max_age":null,"min_age":null,"is_vc_ok":true,"width":500,"height":311,"length":94,"is_autoplay":false,"is_responsive":true,"platforms":["web","mobile"],"supported_events":["play","complete"]},{"id":70799,"title":"Watch Settlers Online video!","subtitle":"","body":"Watch the entire video.","click_url":"http:\/\/b.v11media.com\/click?k=eeacbb44ecf52873acd8cfbe63ffdbea&uid=111&ip_list=%5B%2298.143.242.51%22%2C%2210.122.186.15%22%5D&o=70799&src=json","image_url":"http:\/\/img.youtube.com\/vi\/1sZKP0QnIIY\/0.jpg","cpa":"1","engagement_type":1,"image_width":480,"image_height":360,"currency":"","gender":null,"max_age":29,"min_age":21,"is_vc_ok":true,"width":520,"height":325,"length":50,"is_autoplay":false,"is_responsive":true,"platforms":["web","mobile"],"supported_events":["play","complete"]},{"id":70797,"title":"Watch this Samsung Memory - Meet Loading Ball Larry video!","subtitle":"","body":"Please watch the entire video.","click_url":"http:\/\/b.v11media.com\/click?k=eeacbb44ecf52873acd8cfbe63ffdbea&uid=111&ip_list=%5B%2298.143.242.51%22%2C%2210.122.186.15%22%5D&o=70797&src=json","image_url":"http:\/\/s3.amazonaws.com\/V11\/images\/982727944edee812a1a8c874a9abf65a.png","cpa":"1","engagement_type":1,"image_width":125,"image_height":79,"currency":"","gender":null,"max_age":34,"min_age":18,"is_vc_ok":true,"width":500,"height":310,"length":103,"is_autoplay":false,"is_responsive":true,"platforms":["web","mobile"],"supported_events":["play","complete"]},{"id":72006,"title":"Nike: No Cup is Safe","subtitle":"","body":"Please watch the entire video.","click_url":"http:\/\/b.v11media.com\/click?k=eeacbb44ecf52873acd8cfbe63ffdbea&uid=111&ip_list=%5B%2298.143.242.51%22%2C%2210.122.186.15%22%5D&o=72006&src=json","image_url":"http:\/\/img.youtube.com\/vi\/1jRoHGq9EoY\/0.jpg","cpa":"1","engagement_type":1,"image_width":480,"image_height":360,"currency":"","gender":null,"max_age":null,"min_age":null,"is_vc_ok":true,"width":300,"height":250,"length":63,"is_autoplay":false,"is_responsive":false,"platforms":["web"],"supported_events":["play","complete"]},{"id":72049,"title":"Behind the Cameras - by Rolex","subtitle":"","body":"Please watch the entire video.","click_url":"http:\/\/b.v11media.com\/click?k=eeacbb44ecf52873acd8cfbe63ffdbea&uid=111&ip_list=%5B%2298.143.242.51%22%2C%2210.122.186.15%22%5D&o=72049&src=json","image_url":"http:\/\/img.youtube.com\/vi\/k9o1lAq4zTw\/0.jpg","cpa":"1","engagement_type":1,"image_width":480,"image_height":360,"currency":"","gender":null,"max_age":null,"min_age":null,"is_vc_ok":true,"width":520,"height":325,"length":39,"is_autoplay":false,"is_responsive":false,"platforms":["web","mobile"],"supported_events":["play","complete"]},{"id":72055,"title":"Huggies - Meet the Squirmers!","subtitle":"","body":"Please watch the entire video.","click_url":"http:\/\/b.v11media.com\/click?k=eeacbb44ecf52873acd8cfbe63ffdbea&uid=111&ip_list=%5B%2298.143.242.51%22%2C%2210.122.186.15%22%5D&o=72055&src=json","image_url":"http:\/\/img.youtube.com\/vi\/tZnzHq3_xaQ\/0.jpg","cpa":"1","engagement_type":1,"image_width":480,"image_height":360,"currency":"","gender":null,"max_age":null,"min_age":null,"is_vc_ok":true,"width":300,"height":250,"length":33,"is_autoplay":false,"is_responsive":false,"platforms":["web","mobile"],"supported_events":["play","complete"]},{"id":70794,"title":"Open Days 2012","subtitle":"","body":"Please watch the entire video.","click_url":"http:\/\/b.v11media.com\/click?k=eeacbb44ecf52873acd8cfbe63ffdbea&uid=111&ip_list=%5B%2298.143.242.51%22%2C%2210.122.186.15%22%5D&o=70794&src=json","image_url":"http:\/\/img.youtube.com\/vi\/t4TnaVXQCa4\/0.jpg","cpa":"1","engagement_type":1,"image_width":480,"image_height":360,"currency":"","gender":"f","max_age":null,"min_age":null,"is_vc_ok":true,"width":520,"height":325,"length":58,"is_autoplay":false,"is_responsive":true,"platforms":["web","mobile"],"supported_events":["play","complete"]},{"id":70795,"title":"Samsung Memory - Loading Ball Larry","subtitle":"","body":"Please watch the entire video.","click_url":"http:\/\/b.v11media.com\/click?k=eeacbb44ecf52873acd8cfbe63ffdbea&uid=111&ip_list=%5B%2298.143.242.51%22%2C%2210.122.186.15%22%5D&o=70795&src=json","image_url":"http:\/\/img.youtube.com\/vi\/a5S668LyM5c\/0.jpg","cpa":"1","engagement_type":1,"image_width":480,"image_height":360,"currency":"","gender":null,"max_age":100,"min_age":30,"is_vc_ok":true,"width":520,"height":325,"length":103,"is_autoplay":false,"is_responsive":true,"platforms":["web","mobile"],"supported_events":["play","complete"]},{"id":71522,"title":"Huggies Snug & Dry","subtitle":"","body":"Watch the dads test out Huggies at the mall","click_url":"http:\/\/b.v11media.com\/click?k=eeacbb44ecf52873acd8cfbe63ffdbea&uid=111&ip_list=%5B%2298.143.242.51%22%2C%2210.122.186.15%22%5D&o=71522&src=json","image_url":"http:\/\/img.youtube.com\/vi\/Kthn6DkQVL4\/0.jpg","cpa":"1","engagement_type":1,"image_width":480,"image_height":360,"currency":"","gender":null,"max_age":null,"min_age":18,"is_vc_ok":true,"width":520,"height":325,"length":33,"is_autoplay":false,"is_responsive":true,"platforms":["web","mobile"],"supported_events":["play","complete"]}]

有人能告诉我为什么nodejs库会输出缓冲区标签吗？

编辑：这是我的代码

var Memcached = require('memcached');
var memcached = new Memcached('localhost:11211');

memcached.gets('available_ads', function(err, data){
  if(err){ console.log(err); }
  console.log(data);
  res.json({'click_url' : data});
});

Answer 1

尝试使用：

data.toString();

然后你可能需要使用JSON.parse：

JSON.parse(data.toString());

Answer 2

在存储/设置时，您需要将其存储为字符串。

示例：

mc.set('keyName', JSON.stringify(thisObj), {expires:0}, function(err, val){
    if (err) {
        callback(err);
    } else {
    callback(null, thisObj);
    }
});

然后，当您读回它时，只需将其读取为普通的json。

示例：

mc.get('keyName', async function(err, data){
    callback(null, JSON.parse(data));
}

NodeJS memcache获取Buffer输出

2 个答案: