uses IdMultipartFormData单元
var
MutPartForm: TIdMultiPartFormDataStream;
MutPartForm.AddFormField('ssss','14');
MutPartForm.AddFormField('userName','test'); //
MutPartForm.AddFormField('file','同步');
MutPartForm.AddFormField('uploadFile',' ');
MutPartForm.AddFormField(submit1,submit1);
MutPartForm.AddFile('upfile',filename,'');
Results := IdHTTP1.Post(URL2,MutPartForm);
这是我的一个上传的,参数用TIdMultiPartFormDataStream类型
idhttp里有一个headers记录了报头信息的啊