func handlerupload(w http.ResponseWriter, r *http.Request) { r.ParseMultipartForm(32 -DPDK中文网

以下是一个使用Go语言编写的客户端代码，用于测试文件上传是否成功：

package main

import (
	"fmt"
	"io"
	"mime/multipart"
	"net/http"
	"os"
)

func main() {
	filePath := "/path/to/your/file.jpg" // 替换为你要上传的文件路径
	
	// 创建表单数据
	body, writer := createFormBody()
	defer body.Close()

	fileWriter, err := createFilePart(writer, "file", filePath)
	if err != nil {
		fmt.Println("Failed to create file part:", err)
		return
	}
	
	err = writer.Close()
	if err != nil {
		fmt.Println("Failed to close multipart writer:", err)
		return
	}

	req, err := http.NewRequest("POST", "http://localhost:8080/upload", body) // 替换为你的服务器地址和路径
	if err != nil {
		fmt.Println("Failed to create request:", err)
		return
	}

	req.Header.Set("Content-Type", writer.FormDataContentType())

	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		fmt.Println("Upload failed:", err)
		return
	}
	defer resp.Body.Close()

	bodyBytes, _ := io.ReadAll(resp.Body)
	fmt.Println(string(bodyBytes))
}

// 创建表单数据和multipart.Writer
func createFormBody() (io.ReadCloser, *multipart.Writer) {
	bodyReader, bodyWriter := io.Pipe()
	writer := multipart.NewWriter(bodyWriter)

	go func() {
	    defer bodyWriter.Close()
	    defer writer.Close()
	    
	    // 添加其他表单字段，如需要可以在这里进行添加
	    // 示例：writer.WriteField("field_name", "field_value")
    }()

    return bodyReader, writer
}

// 创建文件部分
func createFilePart(writer *multipart.Writer, fieldName string, filePath string) (io.Writer, error) {
	file, err := os.Open(filePath)
	if err != nil {
		return nil, err
	}
	defer file.Close()

	partWriter, err := writer.CreateFormFile(fieldName, filePath)
	if err != nil {
		return nil, err
	}

	_, err = io.Copy(partWriter, file)
	if err != nil {
		return nil, err
	}

	return partWriter, nil
}

请注意将代码中的http://localhost:8080/upload替换为你的服务器地址和上传路径。另外，确保指定的文件路径正确，并且在运行客户端代码时能够连接到服务器。

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