如何在c ++中使用curl添加动态邮件正文 [英] How to add dynamic mail body using curl in c++

问题描述

您好，朋友我正在使用以下代码发送邮件，但这里邮件的主体是静态定义的，但我想发送一些变量值，如UserNamemail和Passwordmail。在这里，如果我声明UserNamemail =sljfgsg，Passwordmail =lksdhfi然后我的邮件成功，但我的这些变量的值将会改变，所以我不能不断声明，所以请帮助我如何在我的邮件正文中添加我的变量。

  #define FROM< [e-mail]> 
  ＃define TO< [e-mail]> 
   #define CC< [e-mail]> 
  
  static   const   char  * payload_text [] = {
  日期：星期一，2010年11月29日21 ：54：29 + 1100 \\\\ n，
  要：  TO   \\\\ n，
   From： FROM  （示例用户）\ r\ n，
   Cc ： CC  （另一个示例用户）\ r \ n，
  消息ID：< [e-mail]> \\ n，
  主题：SMTP TLS示例消息\\\\ n，
   \\\\ n， / *  用于从标题中划分标题的空行，请参阅RFC5322 * /  
  您的XXXXX演示请求已成功接受。\\\\ n，
  您的登录凭据如下 -  .\\ n，
   \\\\ n，
   UserName is  -  ，UserNamemail，  \\\\ n，
  密码为 - ，Passwordmail，  \\\\ n，
    \\\\ n，
  感谢您对XXXX感兴趣。 \\\\ n，
   \\\\ n，
  它可能是很多行，可以是MIME编码的，无论如何。\ r \ n，
  检查RFC5322.\r\ n，
 NULL 
}; 
 
  struct  upload_status {
  int  lines_read; 
}; 
 
  static   size_t  payload_source（ void  * ptr， size_t  size， size_t  nmemb， void  * userp）
 {
  struct  upload_status * upload_ctx =（ struct  upload_status *）userp; 
  const   char  * data; 
 
  if （（size ==  0 ）||（nmemb ==  0 ）||（（size * nmemb）<  1 ））{
  return   0 ; 
} 
 
 data = payload_text [upload_ctx-> lines_read]; 
 
  if （data）{
  size_t  len = strlen（数据）; 
 memcpy（ptr，data，len）; 
 upload_ctx-> lines_read ++; 
 
  return  len; 
} 
 
  return   0 ; 
} 
 
  int  main（ void ）
 {
 CURL * curl; 
 CURLcode res = CURLE_OK; 
  struct  curl_slist * recipients = NULL; 
  struct  upload_status upload_ctx; 
 
 upload_ctx.lines_read =  0 ; 
 
 curl = curl_easy_init（）; 
  if （curl）{
  / *  设置用户名和密码* /  
 curl_easy_setopt（curl，CURLOPT_USERNAME，  user ）; 
 curl_easy_setopt（curl，CURLOPT_PASSWORD，  secret）; 
 
 curl_easy_setopt（curl，CURLOPT_URL，  smtp：//mainserver.example.net:587 ）; 
 
 
 curl_easy_setopt（curl，CURLOPT_USE_SSL，（ long ）CURLUSESSL_ALL）; 
 
 curl_easy_setopt（curl，CURLOPT_CAINFO，  / path / to / certificate.pem）; 
 
 curl_easy_setopt（curl，CURLOPT_MAIL_FROM，FROM）; 
 
 recipients = curl_slist_append（recipients，TO）; 
 recipients = curl_slist_append（收件人，CC）; 
 curl_easy_setopt（curl，CURLOPT_MAIL_RCPT，收件人）; 
 
 
 curl_easy_setopt（curl，CURLOPT_READFUNCTION，payload_source）; 
 curl_easy_setopt（curl，CURLOPT_READDATA，& upload_ctx）; 
 curl_easy_setopt（curl，CURLOPT_UPLOAD，1L）; 
 
 
 curl_easy_setopt（curl，CURLOPT_VERBOSE，1L）; 
 
  / *  发送消息* /  
 res = curl_easy_perform （卷曲）; 
 
  / *  检查错误* /  
  if （res！= CURLE_OK）
 fprintf（stderr，  curl_easy_perform（）失败：％s \ n，
 curl_easy_strerror（res））; 
 
  / *  免费收件人列表* /  
 curl_slist_free_all （收件人）; 
 
  / *  始终清理* /  
 curl_easy_cleanup（curl） ; 
} 
 
  return （ int ）res; 
} 

解决方案

通过在代码中写入变量名称，添加与添加静态值完全相同的变量。

Hello, Friends I am using following code to send a mail but here the body of mail is statically defined but i want to send some variable values like UserNamemail and Passwordmail. Here if i declare UserNamemail="sljfgsg",Passwordmail="lksdhfi" then my mail going successfully but my value for these variables will be change so i can not declare constantly,so please help me how to add my variable in my mail body.

#define FROM    "<[e-mail]>"
#define TO      "<[e-mail]>"
#define CC      "<[e-mail]>"
 
static const char *payload_text[] = {
  "Date: Mon, 29 Nov 2010 21:54:29 +1100\r\n",
  "To: " TO "\r\n",
  "From: " FROM "(Example User)\r\n",
  "Cc: " CC "(Another example User)\r\n",
  "Message-ID: <[e-mail]>\r\n",
  "Subject: SMTP TLS example message\r\n",
  "\r\n", /* empty line to divide headers from body, see RFC5322 */ 
  "Your request for XXXXX Demo is successfully accepted.\r\n",
  "Your Login Credentials are as follows-.\r\n",
  "\r\n",
  "UserName is - ",UserNamemail,"\r\n",
  "Password is - ",Passwordmail,"\r\n",
  "\r\n",
  "Thanks for making interest in XXXX. \r\n",
  "\r\n",
  "It could be a lot of lines, could be MIME encoded, whatever.\r\n",
  "Check RFC5322.\r\n",
  NULL
};
 
struct upload_status {
  int lines_read;
};
 
static size_t payload_source(void *ptr, size_t size, size_t nmemb, void *userp)
{
  struct upload_status *upload_ctx = (struct upload_status *)userp;
  const char *data;
 
  if((size == 0) || (nmemb == 0) || ((size*nmemb) < 1)) {
    return 0;
  }
 
  data = payload_text[upload_ctx->lines_read];
 
  if(data) {
    size_t len = strlen(data);
    memcpy(ptr, data, len);
    upload_ctx->lines_read++;
 
    return len;
  }
 
  return 0;
}
 
int main(void)
{
  CURL *curl;
  CURLcode res = CURLE_OK;
  struct curl_slist *recipients = NULL;
  struct upload_status upload_ctx;
 
  upload_ctx.lines_read = 0;
 
  curl = curl_easy_init();
  if(curl) {
    /* Set username and password */ 
    curl_easy_setopt(curl, CURLOPT_USERNAME, "user");
    curl_easy_setopt(curl, CURLOPT_PASSWORD, "secret");
 
    curl_easy_setopt(curl, CURLOPT_URL, "smtp://mainserver.example.net:587");
 
   
    curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_ALL);
 
    curl_easy_setopt(curl, CURLOPT_CAINFO, "/path/to/certificate.pem");
 
    curl_easy_setopt(curl, CURLOPT_MAIL_FROM, FROM);
 
    recipients = curl_slist_append(recipients, TO);
    recipients = curl_slist_append(recipients, CC);
    curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients);
 
    
    curl_easy_setopt(curl, CURLOPT_READFUNCTION, payload_source);
    curl_easy_setopt(curl, CURLOPT_READDATA, &upload_ctx);
    curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
 
   
    curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
 
    /* Send the message */ 
    res = curl_easy_perform(curl);
 
    /* Check for errors */ 
    if(res != CURLE_OK)
      fprintf(stderr, "curl_easy_perform() failed: %s\n",
              curl_easy_strerror(res));
 
    /* Free the list of recipients */ 
    curl_slist_free_all(recipients);
 
    /* Always cleanup */ 
    curl_easy_cleanup(curl);
  }
 
  return (int)res;
}

解决方案

You add variables exactly the same as you add static values, by writing the variable names in the code.

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