请问如何在VC中使用HTTP的POST模式获得JSON数据?

[lengx7]

网站API的调用

URL
http://域名/API/GetCunkuan

Method
POST

Description
查询API账户余额接口

Request Param List
Name	Identifier	Type	Remark
	username	string	用户名
	sign		string	MD532签名
加密参数sid		string	sid字符串

Response Param List
Name	Identifier	Type	Remark
	status		string		返回ok代表获取成功，否则返回错误信息
	cunkuan		array<object>	API账户存款

VC代码:

CString   CHttpClient::doPost(CString   href)   
  {   
  CString   httpsource="";   
  CInternetSession   session1;   
  CHttpConnection*   conn1=NULL;   
          CHttpFile*   pFile   =   NULL;       
  CString   strServerName;   
          CString   strObject;   
          INTERNET_PORT   nPort;   
          DWORD   dwServiceType;   
  AfxParseURL((LPCTSTR)href,dwServiceType,   strServerName,   strObject,   nPort);   
          DWORD   retcode;               
          char*   outBuff   =   CONTENT.GetBuffer(1000);  
          try       
          {                   
                  conn1   =   session1.GetHttpConnection(strServerName,nPort);           
                  pFile   =   conn1->OpenRequest(0,strObject,NULL,1,NULL,"HTTP/1.1",INTERNET_FLAG_EXISTING_CONNECT|INTERNET_FLAG_NO_AUTO_REDIRECT);                   
			pFile   ->   AddRequestHeaders("Content-Type: application/json");           
			pFile   ->   AddRequestHeaders("Accept: application/json");      
                  pFile   ->   SendRequest(NULL,0,outBuff,strlen(outBuff)+1);                   
                  pFile   ->   QueryInfoStatusCode(retcode);                   
          }                             
          catch   (CInternetException   *   e){};                   
  if(pFile)   
  {   
  CString   text;   
  for(int   i=0;pFile->ReadString(text);i++)   
  {   
  httpsource=httpsource+text+"/r/n";   
  }   
  pFile->Close();   
  }else   
  {   
    
  }   
  return   httpsource;   
          delete   pFile;           
          delete   conn1;           
          session1.Close();   
  }   
    
  void   CHttpClient::addParam(CString   name,   CString   value)   
  {   
  names.AddTail((LPCTSTR)name);   
  values.AddTail((LPCTSTR)value);   
  CString   eq="=";   
  CString   an="&";   
  CONTENT=CONTENT+name+eq+value+an;  

  CL=CONTENT.GetLength();   
  }








	CString TName,SingStr,SidStr;
	CHttpClient   conn;   
	CString   value="http://www.com/API/GetCunkuan";   
	CString rstr="";
	TName="123456789";
	SingStr="123456789";
	SidStr="123456789";
	conn.addParam("username",TName);   
	conn.addParam("sign",SingStr);   
	conn.addParam("sid",SidStr);   
	rstr=conn.doPost(value);   

使用后rstr返回

{"status":"无效的 JSON 基元: username。","cunkuan":0}/r/n

是哪里不对有需要修改的地方，还望各位大神指点

[zgl7903]

从HTTP四种POST 提交数据方式，引申JSON与JSONP区别

[lengx7]

引用 1 楼 zgl7903 的回复:

从HTTP四种POST 提交数据方式，引申JSON与JSONP区别

虽然最后还是没有搞定，不过也谢谢了