iOS通过http post上传图片

 //ASIFormDataRequest方式 POST上传图片 -(NSDictionary *)addPicWithDictionary:(NSDictionary *)sugestDic{ NSDictionary *tempDic=nil; NSString *url=[NSString stringWithFormat:@"http://182.50.0.62:8095/xianServer/upload/uploadImage?clientType=mobile"]; form = [[[ASIFormDataRequest alloc] initWithURL:[NSURL URLWithString:url]] autorelease]; [form setTimeOutSeconds:60.0]; form.delegate = self; //添加拍照图 //分界线的标识符 NSString *TWITTERFON_FORM_BOUNDARY = @"AaB03x"; //分界线 --AaB03x NSString *MPboundary=[[NSString alloc]initWithFormat:@"--%@",TWITTERFON_FORM_BOUNDARY]; //结束符 AaB03x-- NSString *endMPboundary=[[NSString alloc]initWithFormat:@"%@--",MPboundary]; //添加拍照图片 imageView.image=[UIImage imageNamed:@"btn_done_down@2x.png-600"]; NSData* data = UIImagePNGRepresentation(imageView.image); NSLog(@"%@",data); //http body的字符串 NSMutableString *body=[[NSMutableString alloc]init]; //参数的集合的所有key的集合 NSArray *keys= [sugestDic allKeys]; //遍历keys for(int i=0;i<[keys count];i++) { //得到当前key NSString *key=[keys objectAtIndex:i]; //如果key不是pic，说明value是字符类型，比如name：Boris if(![key isEqualToString:@"files"]) { //添加分界线，换行 [body appendFormat:@"%@\r\n",MPboundary]; //添加字段名称，换2行 [body appendFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",key]; //添加字段的值 [body appendFormat:@"%@\r\n",[sugestDic objectForKey:key]]; } } if (imageView.image) { ////添加分界线，换行 [body appendFormat:@"%@\r\n",MPboundary]; //声明pic字段，文件名为boris.png-600 [body appendFormat:@"Content-Disposition: form-data; name=\"files\"; filename=\"boris.png-600\"\r\n"]; //声明上传文件的格式 [body appendFormat:@"Content-Type: image/png\r\n\r\n"]; } //声明结束符：--AaB03x-- NSString *end=[[NSString alloc]initWithFormat:@"\r\n%@",endMPboundary]; //声明myRequestData，用来放入http body NSMutableData *myRequestData=[NSMutableData data]; //将body字符串转化为UTF8格式的二进制 [myRequestData appendData:[body dataUsingEncoding:NSUTF8StringEncoding]]; //将image的data加入 [myRequestData appendData:data]; //加入结束符--AaB03x-- [myRequestData appendData:[end dataUsingEncoding:NSUTF8StringEncoding]]; //设置HTTPHeader中Content-Type的值 NSString *content=[[NSString alloc]initWithFormat:@"multipart/form-data; boundary=%@",TWITTERFON_FORM_BOUNDARY]; [form addRequestHeader:@"Content-Type" value:content]; [form addRequestHeader:@"Content-Length" value:[NSString stringWithFormat:@"%d", [myRequestData length]]]; [form setRequestMethod:@"POST"]; [form startAsynchronous]; [form setDidFailSelector:@selector(requestBeFailed:)]; [form setDidFinishSelector:@selector(requestBeFinished:)]; // 解析取得的结果 return tempDic; }