package mainimport (        "encoding/json"    "fmt"        "io/ioutil"    "net/http"    "net/url"    "os"    "bufio"    "io"    "mime/multipart"    "net/smtp")

 

type addfeature struct {    subid int    `json:"subid"`    file  []byte `json:"file"`}func AddTemplateWeb(addr string) {    // 创建表单文件    // CreateFormFile 用来创建表单，第一个参数是字段名，第二个参数是文件名    var feat addfeature    buf := new(bytes.Buffer)    writer := multipart.NewWriter(buf)    writer.WriteField("sublib", "1")    formFile, err := writer.CreateFormFile("file", "5.jpg")    if err != nil {        fmt.Println("Create form file failed: %s\n", err)    }    // 从文件读取数据，写入表单    srcFile, err := os.Open("/home/wei/1.jpg")    if err != nil {        fmt.Println("%Open source file failed: s\n", err)    }    defer srcFile.Close()    _, err = io.Copy(formFile, srcFile)    if err != nil {        fmt.Println("Write to form file falied: %s\n", err)    }    // 发送表单    contentType := writer.FormDataContentType()    writer.Close() // 发送之前必须调用Close()以写入结尾行    re, err := http.Post(addr, contentType, buf)    fmt.Println(re)    return    }