文件操作示例

下载文件

package main

import (
	"github.com/go-zoox/fetch"
)

func main() {
	response, err := fetch.Download("https://example.com/image.jpg", "/tmp/image.jpg")
	if err != nil {
		panic(err)
	}
}

带进度的下载

f := fetch.New()
f.SetProgressCallback(func(percent int64, current, total int64) {
	fmt.Printf("下载进度: %d%% (%d/%d 字节)\n", percent, current, total)
})

response, err := f.Download("https://example.com/large-file.zip", "/tmp/file.zip").Execute()

上传文件

package main

import (
	"os"
	"github.com/go-zoox/fetch"
)

func main() {
	file, err := os.Open("local-file.txt")
	if err != nil {
		panic(err)
	}
	defer file.Close()

	response, err := fetch.Upload("https://api.example.com/upload", file)
	if err != nil {
		panic(err)
	}

	fmt.Println(response.JSON())
}

带额外字段的上传

file, err := os.Open("image.jpg")
if err != nil {
	panic(err)
}
defer file.Close()

f := fetch.New()
f.SetMethod("POST")
f.SetURL("https://api.example.com/upload")
f.SetBody(map[string]interface{}{
	"file": file,
	"description": "My image",
	"category": "photos",
})

response, err := f.Execute()

带进度的上传

file, err := os.Open("large-file.zip")
if err != nil {
	panic(err)
}
defer file.Close()

f := fetch.New()
f.SetProgressCallback(func(percent int64, current, total int64) {
	fmt.Printf("上传进度: %d%% (%d/%d 字节)\n", percent, current, total)
})

response, err := f.Upload("https://api.example.com/upload", file).Execute()

完整的文件传输示例

package main

import (
	"fmt"
	"os"
	"github.com/go-zoox/fetch"
)

func main() {
	// 下载文件
	fmt.Println("正在下载文件...")
	_, err := fetch.Download("https://example.com/file.zip", "/tmp/file.zip")
	if err != nil {
		panic(err)
	}
	fmt.Println("下载完成！")

	// 上传文件
	fmt.Println("正在上传文件...")
	file, err := os.Open("/tmp/file.zip")
	if err != nil {
		panic(err)
	}
	defer file.Close()

	response, err := fetch.Upload("https://api.example.com/upload", file)
	if err != nil {
		panic(err)
	}
	
	fmt.Println("上传完成！")
	fmt.Println(response.JSON())
}