請教大神，STM32 LWIP 如何實現 HTTP POST ?

puby

啓奏各位大神
為了實現 HTTP POST (因為幾乎沒有人再用 CGI 了嘛 .... )，所以小弟參考了這個文件  http://blog.csdn.net/pugu12/article/details/41943565

可是小弟初學軟件，明明照抄一個字都沒錯，卻編譯不出來，一堆錯誤，都急的哭出來了！
口有大神願意出手相救？
拜謝，付費求解我都願意！

err_t httpd_post_begin(void *connection, const char *uri, const char *http_request,
                       u16_t http_request_len, int content_len, char *response_uri,
                       u16_t response_uri_len, u8_t *post_auto_wnd)
{

#if LWIP_HTTPD_CGI
  int i = 0;
#endif

struct http_state *hs = (struct http_state *)connection;

if(!uri || (uri[0] == '\0')) {
    return ERR_ARG;
}

hs->cgi_handler_index = -1;   // 此变量为本人自己在struct http_state 添加 用于保存CGI handler 索引 为-1表示无CGI handler索引
hs->response_file = NULL; // 此变量为本人自己在struct http_state 添加 用于保存 CGI handler 处理完后返回的响应uri.

#if LWIP_HTTPD_CGI

  if (g_iNumCGIs && g_pCGIs) {
    for (i = 0; i < g_iNumCGIs; i++) {
      if (strcmp(uri, g_pCGIs.pcCGIName) == 0) {
         hs->cgi_handler_index = i; // 找到响应的 CGI handler 将其保存在cgi_handler_index 以便在httpd_post_receive_data中使用
         break;
       }
    }
  }

  if(i == g_iNumCGIs) {
    return ERR_ARG; // 未找到CGI handler
  }
#endif
  return ERR_OK;
}

#define LWIP_HTTPD_POST_MAX_PAYLOAD_LEN     512
static char http_post_payload[LWIP_HTTPD_POST_MAX_PAYLOAD_LEN];
static u16_t http_post_payload_len = 0;
err_t httpd_post_receive_data(void *connection, struct pbuf *p)
{
    struct http_state *hs = (struct http_state *)connection;
    struct pbuf *q = p;
    int count;
    u32_t http_post_payload_full_flag = 0;
    while(q != NULL)  // 缓存接收的数据至http_post_payload
    {
      if(http_post_payload_len + q->len <= LWIP_HTTPD_POST_MAX_PAYLOAD_LEN) {
          MEMCPY(http_post_payload+http_post_payload_len, q->payload, q->len);
          http_post_payload_len += q->len;
      }
      else {  // 缓存溢出 置溢出标志位
        http_post_payload_full_flag = 1;
        break;
      }
      q = q->next;
    }
    pbuf_free(p); // 释放pbuf
    if(http_post_payload_full_flag) // 缓存溢出 则丢弃数据
    {
       http_post_payload_full_flag = 0;
       http_post_payload_len = 0;
       hs->cgi_handler_index = -1;
       hs->response_file = NULL;
    }
    else if(hs->post_content_len_left == 0) {  // POST数据已经接收完毕 则处理
        if(hs->cgi_handler_index != -1) {
            count = extract_uri_parameters(hs, http_post_payload);  // 解析
            hs->response_file = g_pCGIs[hs->cgi_handler_index].pfnCGIHandler(hs->cgi_handler_index, count, hs->params,
                                             hs->param_vals); // 调用解析函数
            http_post_payload_len = 0;
        }
        else {
            hs->response_file = NULL;
            http_post_payload_len = 0;
        }
    }
    return ERR_OK;
}

void httpd_post_finished(void *connection, char *response_uri, u16_t response_uri_len)
{
    struct http_state *hs = (struct http_state *)connection;
    if(hs->response_file != NULL) {
        strncpy(response_uri, hs->response_file,response_uri_len); // 拷贝uri 用于给浏览器响应相应的请求
    }
}

**************************************************************************************
錯誤訊息：
*** Using Compiler 'V5.06 update 4 (build 422)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin'
Build target 'Target 1'
compiling httpd.c...
..\LWIP\lwip_app\web_server_demo\httpd.c(2243): error:  #136: struct "http_state"  has no field "cgi_handler_index"
   hs->cgi_handler_index = -1;   // 森曹講峈掛&#65395;赻撩婓struct http_state 氝樓 蚚衾悵湔CGI handler 坰竘 峈-1桶尨拸CGI handler坰竘
..\LWIP\lwip_app\web_server_demo\httpd.c(2244): error:  #136: struct "http_state"  has no field "response_file"
   hs->response_file = NULL; // 森曹講峈掛&#65395;赻撩婓struct http_state 氝樓 蚚衾悵湔 CGI handler 揭燴俇綴殿隙腔砒茼uri.
..\LWIP\lwip_app\web_server_demo\httpd.c(2251): error:  #136: struct "http_state"  has no field "cgi_handler_index"
           hs->cgi_handler_index = i; // 梑善砒茼腔 CGI handler 蔚［悵湔婓cgi_handler_index 眕晞婓httpd_post_receive_data笢妏蚚
..\LWIP\lwip_app\web_server_demo\httpd.c(2291): error:  #136: struct "http_state"  has no field "cgi_handler_index"
         hs->cgi_handler_index = -1;
..\LWIP\lwip_app\web_server_demo\httpd.c(2292): error:  #136: struct "http_state"  has no field "response_file"
         hs->response_file = NULL;
..\LWIP\lwip_app\web_server_demo\httpd.c(2295): error:  #136: struct "http_state"  has no field "cgi_handler_index"
          if(hs->cgi_handler_index != -1) {
..\LWIP\lwip_app\web_server_demo\httpd.c(2297): error:  #136: struct "http_state"  has no field "response_file"
              hs->response_file = g_pCGIs[hs->cgi_handler_index].pfnCGIHandler(hs->cgi_handler_index, count, hs->params,
..\LWIP\lwip_app\web_server_demo\httpd.c(2297): error:  #136: struct "http_state"  has no field "cgi_handler_index"
              hs->response_file = g_pCGIs[hs->cgi_handler_index].pfnCGIHandler(hs->cgi_handler_index, count, hs->params,
..\LWIP\lwip_app\web_server_demo\httpd.c(2297): error:  #136: struct "http_state"  has no field "cgi_handler_index"
              hs->response_file = g_pCGIs[hs->cgi_handler_index].pfnCGIHandler(hs->cgi_handler_index, count, hs->params,
..\LWIP\lwip_app\web_server_demo\httpd.c(2302): error:  #136: struct "http_state"  has no field "response_file"
              hs->response_file = NULL;
..\LWIP\lwip_app\web_server_demo\httpd.c(2312): error:  #136: struct "http_state"  has no field "response_file"
      if(hs->response_file != NULL) {
..\LWIP\lwip_app\web_server_demo\httpd.c(2313): error:  #136: struct "http_state"  has no field "response_file"
          strncpy(response_uri, hs->response_file,response_uri_len); // 蕭探uri 蚚衾跤銡擬け砒茼眈茼腔ワА
..\LWIP\lwip_app\web_server_demo\httpd.c: 0 warnings, 12 errors
compiling httpd_cgi_ssi.c...
compiling main.c...
"..\OBJ\Template.axf" - 12 Error(s), 0 Warning(s).
Target not created.
Build Time Elapsed:  00:00:01

正点原子

帮顶

jianxi258

同样的问题，帮顶

whyviking

hs->cgi_handler_index = -1;   // 此变量为本人自己在struct http_state 添加 用于保存CGI handler 索引 为-1表示无CGI handler索引
hs->response_file = NULL; // 此变量为本人自己在struct http_state 添加 用于保存 CGI handler 处理完后返回的响应uri.
这两句话，你去  http_state  结构体定义的地方加上   response_file 和   cgi_handler_index  的定义试试