+(NSString *)PostImagesToServer:(NSString *) strUrl dicPostParams:(NSMutableDictionary *)params dicImages:(NSMutableDictionary *) dicImages{  
        NSString * res;  
          
          
        //分界线的标识符  
        NSString *TWITTERFON_FORM_BOUNDARY = @"AaB03x";  
        //根据url初始化request  
        //NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:strUrl] cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:10];  
          
        NSURL *url = [NSURL URLWithString:strUrl];  
        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];  
        //分界线 --AaB03x  
        NSString *MPboundary=[[NSString alloc]initWithFormat:@"--%@",TWITTERFON_FORM_BOUNDARY];  
        //结束符 AaB03x--  
        NSString *endMPboundary=[[NSString alloc]initWithFormat:@"%@--",MPboundary];  
        //要上传的图片  
        UIImage *image;//=[params objectForKey:@"pic"];  
        //得到图片的data  
        //NSData* data = UIImagePNGRepresentation(image);  
        //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= [params 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:@"pic"]) {  
                //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];  
                //[body appendString:@"Content-Transfer-Encoding: 8bit"];  
                //添加字段的值  
                [body appendFormat:@"%@\r\n",[params objectForKey:key]];  
            //}  
        }  
        ////添加分界线，换行  
        //[body appendFormat:@"%@\r\n",MPboundary];  
          
        //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]];  
          
        //循环加入上传图片  
        keys = [dicImages allKeys];  
        for(int i = 0; i< [keys count] ; i++){  
            //要上传的图片  
            image = [dicImages objectForKey:[keys objectAtIndex:i ]];  
            //得到图片的data  
            NSData* data =  UIImageJPEGRepresentation(image, 0.0);  
            NSMutableString *imgbody = [[NSMutableString alloc] init];  
            //此处循环添加图片文件  
            //添加图片信息字段  
            //声明pic字段，文件名为boris.png  
            //[body appendFormat:[NSString stringWithFormat: @"Content-Disposition: form-data; name=\"File\"; filename=\"%@\"\r\n", [keys objectAtIndex:i]]];  
              
            ////添加分界线，换行  
            [imgbody appendFormat:@"%@\r\n",MPboundary];  
            [imgbody appendFormat:@"Content-Disposition: form-data; name=\"File%d\"; filename=\"%@.jpg\"\r\n", i, [keys objectAtIndex:i]];  
            //声明上传文件的格式  
            [imgbody appendFormat:@"Content-Type: application/octet-stream; charset=utf-8\r\n\r\n"];  
              
            NSLog(@"上传的图片：%d  %@", i, [keys objectAtIndex:i]);  
              
            //将body字符串转化为UTF8格式的二进制  
            //[myRequestData appendData:[body dataUsingEncoding:NSUTF8StringEncoding]];  
            [myRequestData appendData:[imgbody dataUsingEncoding:NSUTF8StringEncoding]];  
            //将image的data加入  
            [myRequestData appendData:data];  
            [myRequestData appendData:[ @"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];  
        }  
        //声明结束符：--AaB03x--  
        NSString *end=[[NSString alloc]initWithFormat:@"%@\r\n",endMPboundary];  
        //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];  
        //设置HTTPHeader  
        [request setValue:content forHTTPHeaderField:@"Content-Type"];  
        //[request setValue:@"keep-alive" forHTTPHeaderField:@"connection"];  
        //[request setValue:@"UTF-8" forHTTPHeaderField:@"Charsert"];  
        //设置Content-Length  
        [request setValue:[NSString stringWithFormat:@"%lu", (unsigned long)[myRequestData length]] forHTTPHeaderField:@"Content-Length"];  
        //设置http body  
        [request setHTTPBody:myRequestData];  
        //http method  
        [request setHTTPMethod:@"POST"];  
          
        //建立连接，设置代理  
        //NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];  
          
        //设置接受response的data  
             NSData *mResponseData;  
        NSError *err = nil;  
        mResponseData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:&err];  
          
        if(mResponseData == nil){  
            NSLog(@"err code : %@", [err localizedDescription]);  
        }  
        res = [[NSString alloc] initWithData:mResponseData encoding:NSUTF8StringEncoding];  
        /* 
        if (conn) { 
            mResponseData = [NSMutableData data]; 
            mResponseData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:&err]; 
             
            if(mResponseData == nil){ 
                NSLog(@"err code : %@", [err localizedDescription]); 
            } 
            res = [[NSString alloc] initWithData:mResponseData encoding:NSUTF8StringEncoding]; 
        }else{ 
            res = [[NSString alloc] init]; 
        }*/  
        NSLog(@"服务器返回：%@", res);  
        return res;  
    }