go webapi上传文件

一、导入依赖

import "net/http"

我这里用到了Guid所以安装依赖

go get github.com/google/uuid

二、main.go

package main

import (
	"fmt"
	"github.com/jmoiron/sqlx"
	"github.com/tealeg/xlsx"
	"log"
	"path/filepath"
)
import _ "github.com/go-sql-driver/mysql"

import "net/http"
import "encoding/json"
import "io/ioutil"
import "github.com/google/uuid"

type Student struct {
	Name string
	Sex  string
}

type ResponseData struct {
	Status  string `json:"status"`
	Message string `json:"message"`
}

func (student Student) show() {
	fmt.Printf("Name:%s Sex:%s\r\n", student.Name, student.Sex)
}
func uploadFile(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")
	r.ParseMultipartForm(32 << 20) // 设置最大内存为32MB
	file, handler, err := r.FormFile("file")
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
	defer file.Close()

	data, err := ioutil.ReadAll(file)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	ext := filepath.Ext(handler.Filename)
	// 这里可以将文件数据保存到服务器
	err2 := ioutil.WriteFile(uuid.NewString()+ext, data, 0644)
	if err2 != nil {
		return
	}

	response := ResponseData{
		Status:  "success",
		Message: "Hello, this is a JSON response",
	}
	jsonResponse, err3 := json.Marshal(response)
	if err3 != nil {
		http.Error(w, err3.Error(), http.StatusInternalServerError)
		return
	}
	w.Write(jsonResponse)
}
func main() {
	http.HandleFunc("/upload", uploadFile)
	http.ListenAndServe("0.0.0.0:5000", nil)
}
func saveexcel() {
	excelPath := "students.xlsx"
	xlFile, err := xlsx.OpenFile(excelPath)
	if err != nil {
		fmt.Printf("Error opening Excel file: %s\n", err)
		return
	}
	sheet := xlFile.Sheets[0]
	var students []Student
	i := 0
	for _, row := range sheet.Rows {
		name := row.Cells[0].String()
		sex := row.Cells[1].String()
		fmt.Printf("name:%s sex:%s \r\n", name, sex)
		students = append(students, Student{Name: name, Sex: sex})
		i++
	}
	for _, student := range students {
		student.show()
	}

	fmt.Println("数据库操作")
	dsn := "root:123456@tcp(192.168.31.132:3306)/demo"
	db, err := sqlx.Open("mysql", dsn)
	if err != nil {
		log.Fatal(err)
	}

	for i, student := range students {
		if i == 0 {
			continue
		}
		db.NamedExec("insert into students(Name,Sex) values(:name,:sex)", student)
	}

	var studentMaps []*Student
	err = db.Select(&studentMaps, `select name,sex from students where name=?`, "张三")
	if err != nil {
		log.Fatal(err)
	}
	for _, student := range studentMaps {
		student.show()
	}
}

三、postman测试

curl --location --request POST 'http://127.0.0.1:5000/upload' \
--form 'file=@"/C:/xxxx图片/tos.jpg"'

运行效果：