1、直接代码

libculr比较成熟，较少出问题，不多说直接上一个简单的示例

讯享网

#include "stdafx.h" #include <stdio.h> #include <curl/curl.h> #include <sys/stat.h> #include <fcntl.h> int main(int argc, char *argv[]) { 
    CURL *curl; CURLcode res; struct curl_httppost *formpost = NULL; struct curl_httppost *lastptr = NULL; struct curl_slist *headerlist = NULL; static const char buf[] = "Expect:"; curl_global_init(CURL_GLOBAL_ALL); /* Fill in the file upload field */ curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, "fileUpload", CURLFORM_FILE, "H:\\1.xlsx", CURLFORM_END); /* Fill in the filename field */ curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, "filename", CURLFORM_COPYCONTENTS, "1.xlsx", CURLFORM_END); /* Fill in the submit field too, even if this is rarely needed */ curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, "submit", CURLFORM_COPYCONTENTS, "Submit", CURLFORM_END); curl = curl_easy_init(); /* initalize custom header list (stating that Expect: 100-continue is not wanted */ headerlist = curl_slist_append(headerlist, buf); if (curl) { 
    /* what URL that receives this POST */ curl_easy_setopt(curl, CURLOPT_URL, "http://localhost:5600/upload"); if ((argc == 2) && (!strcmp(argv[1], "noexpectheader"))) /* only disable 100-continue header if explicitly requested */ curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist); curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost); /* Perform the request, res will get the return code */ res = curl_easy_perform(curl); /* Check for errors */ if (res != CURLE_OK) fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res)); /* always cleanup */ curl_easy_cleanup(curl); /* then cleanup the formpost chain */ curl_formfree(formpost); /* free slist */ curl_slist_free_all(headerlist); } return 0; } 

2、使用nodejs 作为服务端测试

使用multer 来接收上传文件

讯享网const express=require('express'); const app=express(); const multer=require('multer'); const bodyParser=require('body-parser'); const fs=require('fs'); const path=require('path'); app.listen(5600,(err)=>{ 
    if(err) console.log(err); else console.log('成功监听5600端口'); }); //获取数据请求 post方式 app.use(bodyParser.urlencoded({ 
    extended:true, maxAge:5*1024*1024 })); app.use(express.static('./www')); const storage=multer.diskStorage({ 
    //上传属性定制 destination:function(req,file,cb){ 
    cb(null,'./upload'); }, filename:function(req,file,cb){ 
    //保存的文件名 var arr=file.originalname.split('.'); var ext='.'+arr[arr.length-1]; //后缀名 var filename='user'+Math.random().toString().replace('.','')+ext; cb(null,filename); } }); const upload=multer({ 
   storage:storage}).single('fileUpload'); app.use('/upload',(req,res)=>{ 
    //上传 upload(req,res,(err)=>{ 
    if(err){ 
   //上传时发生错误 console.log(err); return; } //上传完后,一切顺利 console.log(111); res.send('ok'); }); });