51 lines
1.2 KiB
Go
51 lines
1.2 KiB
Go
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package upload
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// Author: Yun
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// Version: 2023年6月29日13:45:10
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// Description: 向一个URL上传服务器本地文件
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import (
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"bytes"
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"fmt"
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"io"
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"mime/multipart"
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"net/http"
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"os"
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)
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// 表单上传
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func FormUpload(url, filePath string) ([]byte, error) {
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// 文件上传
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bodyBuf := bytes.NewBufferString("")
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bodyWriter := multipart.NewWriter(bodyBuf)
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_, err := bodyWriter.CreateFormFile("file", filePath)
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if err != nil {
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return nil, err
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}
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fh, err := os.Open(filePath)
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if err != nil {
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return nil, err
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}
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boundary := bodyWriter.Boundary()
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closeBuf := bytes.NewBufferString(fmt.Sprintf("\r\n--%s--\r\n", boundary))
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requestReader := io.MultiReader(bodyBuf, fh, closeBuf)
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fi, err := fh.Stat()
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if err != nil {
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return nil, err
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}
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req, err := http.NewRequest("POST", url, requestReader)
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if err != nil {
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return nil, err
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}
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req.Header.Add("Content-Type", "multipart/form-data; boundary="+boundary)
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req.ContentLength = fi.Size() + int64(bodyBuf.Len()) + int64(closeBuf.Len())
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res, err := http.DefaultClient.Do(req)
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if err != nil {
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return nil, err
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}
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defer res.Body.Close()
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return io.ReadAll(res.Body)
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}
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