设置图片前置路径
```go
package main
import articleSpider "github.com/PeterYangs/article-spider/v3"
func main() {
f := articleSpider.Form{
Host: "https://www.shouyouzhijia.net",
Channel: "/xinwen_[PAGE]/",
PageStart: 1,
Length: 3,
ListSelector: "body > div.main.newex.clearfix > div.LC_lef > div.lef_content > dl",
HrefSelector: " dd > h3 > a",
ListFields: map[string]articleSpider.Field{
"img": {Types: articleSpider.Image, Selector: " dt > a > img", ImagePrefix: func(form *articleSpider.Form, imageName string) string {
return "image"
}},
},
}
s := articleSpider.NewSpider(f, articleSpider.Normal)
s.Start()
}
```
在excel中显示为
>[info]**ImagePrefix**不会生成文件夹，只会在结果添加路径
<br/><br/>
设置图片子文件夹
```go
package main
import articleSpider "github.com/PeterYangs/article-spider/v3"
func main() {
f := articleSpider.Form{
Host: "https://www.shouyouzhijia.net",
Channel: "/xinwen_[PAGE]/",
PageStart: 1,
Length: 3,
ListSelector: "body > div.main.newex.clearfix > div.LC_lef > div.lef_content > dl",
HrefSelector: " dd > h3 > a",
ListFields: map[string]articleSpider.Field{
"img": {Types: articleSpider.Image, Selector: " dt > a > img", ImageDir: "[date:Ymd]"},
},
}
s := articleSpider.NewSpider(f, articleSpider.Normal)
s.Start()
}
```
excel结果
<br/>
图片路径
<br/>
**ImageDir**支持三种变量模式
* [date:Ymd] 日期文件夹，例：**ImageDir: "[date:Ymd]"** 或 **ImageDir: "[date:md]"**
* [random:1-100] 随机数字 例：**ImageDir: "[date:1-200]"** ，随机1到200生成文件夹
* [singleField:name] 根据其他字段生成文件夹 例：**ImageDir: "[singleField:title]"**
<br/><br/>
例子：
随机数字文件夹
```
package main
import articleSpider "github.com/PeterYangs/article-spider/v3"
func main() {
f := articleSpider.Form{
Host: "https://www.shouyouzhijia.net",
Channel: "/xinwen_[PAGE]/",
PageStart: 1,
Length: 3,
ListSelector: "body > div.main.newex.clearfix > div.LC_lef > div.lef_content > dl",
HrefSelector: " dd > h3 > a",
ListFields: map[string]articleSpider.Field{
"img": {Types: articleSpider.Image, Selector: " dt > a > img", ImageDir: "[random:1-200]"},
},
}
s := articleSpider.NewSpider(f, articleSpider.Normal)
s.Start()
}
```
<br/><br/>
根据文章标题生成文件夹
```
package main
import articleSpider "github.com/PeterYangs/article-spider/v3"
func main() {
f := articleSpider.Form{
Host: "https://www.shouyouzhijia.net",
Channel: "/xinwen_[PAGE]/",
PageStart: 1,
Length: 3,
ListSelector: "body > div.main.newex.clearfix > div.LC_lef > div.lef_content > dl",
HrefSelector: " dd > h3 > a",
ListFields: map[string]articleSpider.Field{
"title": {Types: articleSpider.Text, Selector: " dd > h3 > a"},
"img": {Types: articleSpider.Image, Selector: " dt > a > img", ImageDir: "[singleField:title]"},
},
}
s := articleSpider.NewSpider(f, articleSpider.Normal)
s.Start()
}
```
