1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
const get9gagList = (category, offset, next) = & gt; {
var options = {
method: 'GET',
url: `https://9gag.com/v1/group-posts/group/${category}/type/${type}?`
};
if (offset == '') {
options.url += 'c=10'
} else if (offset == -1) {
return next('complete')
} else {
options.url += offset
}
request(options, function (error, response, body) {
if (error) {
next(error, null)
return
}
let data = JSON.parse(body)
if (data & amp; & amp; data.data & amp; & amp; data.data.posts & amp; & amp; data.data.posts.length) {
log.info(`获取 ${category} 视频列表成功 offset ${offset? offset: 'c=10'}`, data.data.posts.length)
videoList = videoList.concat(data.data.posts)
return next(null, category, data.data.nextCursor)
} else {
log.info(`获取 ${category} 内容为空 offset ${offset}，所有数据获取完毕 。`)
return next(null, category, -1)
}
});
}
const getMultiList = async category = & gt; {
let actions = [async.constant(category, '')]
for (let i = 1; i & lt; = pageCount; i++) {
actions.push(get9gagList)
}
return new Promise((resolve, reject) = & gt; {
async.waterfall(actions, function (err, result) {
log.info(`finish crawler ${category} videos`, err, videoList.length)
if (err) log.info(err)
return resolve(videoList)
})
})
}
const download = (category, media, next) = & gt; {
let isExist = isFileExist(media.id)
if (isExist) return next(null)
let filePath
if (media.type == 'video') {
filePath = `${videoDlPath}/${media.id}.mp4`
} else if (media.type == 'img') {
filePath = `${imgDlPath}/${media.id}.jpg`
} else return next(null)
request(media.url)
.on('response', function (res) {
var fws = fs.createWriteStream(filePath);
res.pipe(fws);
res.on('end', function (e) {
log.info(`finish download ${category} ${filePath}`)
saveJsonData(media.type, {
id: media.id,
category: category,
desc: media.desc
})
if (media.type == 'video') videoAmount++
else imgAmount++
return next(null)
});
res.on('error', err = & gt; {
log.error('download error', err)
return next(null)
})
});
}
const isFileExist = id = & gt; {
let videoPath = `${videoDlPath}/${id}.mp4`
let imgPath = `${imgDlPath}/${id}.jpg`
if (fs.existsSync(videoPath)) {
log.info('video file exist', videoPath)
return true
} else if (fs.existsSync(imgPath)) {
log.info('img file exist', imgPath)
return true
} else return false
}
const saveJsonData = (type, data) = & gt; {
try {
let jsonFile = type == 'video' ? videoJsonPath : imgJsonPath
jsonFile += `/data.json`
let jsonData = []
if (fs.existsSync(jsonFile)) {
fileData = fs.readFileSync(jsonFile, {
encoding: 'utf8'
})
if (fileData) {
jsonData = JSON.parse(fileData)
}
}
jsonData.push(data)
fs.writeFileSync(jsonFile, JSON.stringify(jsonData));
} catch (error) {
log.error('写入json文件失败', data)
}
}
const convertVideoToGift = () = & gt; {
let videoPath = './233.mp4'
var command = ffmpeg(videoPath)
.format('gif');
command.save('./233.gif');
}
const mediaFilter = data = & gt; {
let results = [],
videos = [],
imgs = []
for (let i = 0; i & lt; data.length; i++) {
let video = data[i]
if (video.images.image460sv & amp; & amp; video.images.image460sv.hasAudio & amp; & amp; video.images.image460sv.url) {
videos.push({
id: video.id,
type: 'video',
url: video.images.image460sv.url,
desc: video.title
})
} else if (!video.images.image460sv & amp; & amp; video.images.image460.url) {
imgs.push({
id: video.id,
type: 'img',
url: video.images.image460.url,
desc: video.title
})
}
}
return {
results: results.concat(videos, imgs),
video: videos.length,
img: imgs.length
}
}
const task = async (category, next) = & gt; {
let videoLists = await getMultiList(category)
videoList = []
log.info('数据获取成功', videoLists.length)
let {
results: videos,
video,
img
} = mediaFilter(videoLists)
log.info(`${videoLists.length} 个内容，有声视频共 ${video} 个，图片共 ${img} 个`)
let dlActions = videos.map(video = & gt; next = & gt; {
return download(category, video, next)
})
async.series(dlActions, (err, result) = & gt; {
if (err) {
log.error(`finish【${category}】all download error`, error)
return next(error)
}
log.info(`finish【${category}】all downloads success`, result.filter(item = & gt; item).length)
return next(null)
})
}
const main = () = & gt; {
let actions = category.map(item = & gt; next = & gt; {
return task(item, next)
})
return new Promise((resolve, reject) = & gt; {
async.series(actions, function (err, result) {
if (err) return reject(new Error(err))
return resolve(result)
})
})
}
main()
.then(result = & gt; {
log.info(`awsome！ all ${result.length} tasks finish success! video: ${videoAmount} 个, img: ${imgAmount} 个`, )
})
.catch(error = & gt; {
log.info(`all tasks finish error! video: ${videoAmount}, img: ${imgAmount}`, error)
})
.then(() = & gt; {
process.exit(0)
})
|
