使用 PHP 在 ios 中通过 JSON 上传网络服务器上的图像

Question

我有一个应用程序，我在网络服务器上上传用户数据。

我正在使用下面的代码通过下面的代码将数据传递给网络服务器。

-(IBAction)btnRegister:(id)sender
{
    jsonSP = [SBJSON new];
    jsonSP.humanReadable = YES;

     NSString *service = @"/register.php";
    NSData *imageData = UIImagePNGRepresentation([UIImage imageNamed:@"register_btn.png"]);
    [Base64 initialize];
    NSString *imageString = [Base64 encode:imageData];
    NSLog(@"%@",imageString);


    NSString *requestString = [NSString stringWithFormat:@"{\"?username\"=\"%@\"&\"user_password\"=\"%@\"&\"first_name\"=\"%@\"&\"email\"=\"%@\"&\"profile_photo_link\"=\"%@\"\"}",@"Test",@"Test",@"Test",@"Test@mmm.com",imageString];
    NSData *requestData = [NSData dataWithBytes: [requestString UTF8String] length: [requestString length]];

    NSString *fileLoc = [[NSBundle mainBundle] pathForResource:@"URLName" ofType:@"plist"];
    NSDictionary *fileContents = [[NSDictionary alloc] initWithContentsOfFile:fileLoc];
    NSString *urlLoc = [fileContents objectForKey:@"URL"];
     urlLoc = [urlLoc stringByAppendingString:service];
    NSLog(@"URL : %@",urlLoc);
   // urlLoc = [urlLoc stringByAppendingString:@"?username=abcd&password=abcd"];
    urlLoc = [urlLoc stringByAppendingString:requestString];
    urlLoc = [urlLoc stringByReplacingOccurrencesOfString:@"{" withString:@""];
    urlLoc = [urlLoc stringByReplacingOccurrencesOfString:@"}" withString:@""];
    urlLoc = [urlLoc stringByReplacingOccurrencesOfString:@"\"" withString:@""];
    NSLog(@"URL : %@",urlLoc);
    // [fileContents release]; //o_r
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL: [NSURL URLWithString: urlLoc]];
    NSString *postLength = [NSString stringWithFormat:@"%d", [requestData length]];
    [request setHTTPMethod: @"POST"];
    [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
    [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
    [request setHTTPBody: requestData];

    //    self.connection = [NSURLConnection connectionWithRequest:request delegate:self];

    NSError *respError = nil;
    NSData *returnData = [NSURLConnection sendSynchronousRequest: request returningResponse: nil error: &respError ];
    NSLog(@"response is %@",returnData);


    // [request release];
    if (respError)
    {
        //[customSpinner hide:YES];

        UIAlertView *alt=[[UIAlertView alloc]initWithTitle:@"Internet connection is not Available!" message:@"Check your network connectivity" delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];
        [alt show];
        //[alt release];


    }
    else
    {
        NSString *responseString = [[NSString alloc] initWithData:returnData encoding: NSUTF8StringEncoding];
        NSLog(@"response string %@",responseString);
    }
}

我可以在没有图像的情况下成功地将数据发送到网络服务器。

但是如果使用上面显示的代码通过Base64编码上传图像，则数据不会上传到网络服务器。 在 NSLog 中显示请求查询字符串太长。

我已经导入了 Base64.h 和 .m 文件。

我也想通过图像传递数据。

我该怎么做？

我知道有很多链接，但我想以这种方式传递它，所以请告诉我我在这里做错了什么？

请帮帮我。

提前致谢。

Answer 1

Hey Manthan 试试下面的代码，将UIImage 转换为NSString，然后将其传递给服务器

        UIImage *imgPic =[UIImage imageNamed:@"register_btn.png"];
        NSData * imageData =  UIImagePNGRepresentation(imgPic);
        NSString *base64String = [imageData base64EncodedStringWithOptions:0];

Answer 2

这是一个服务器问题，它会告诉您该错误。

json 没有最大长度，但可以发送的数据量有最大限制。要解决此问题，只需在 .htaccess 文件中设置您可以发送的数据量：php_value post_max_size 20M

编辑

另外，如果您可以访问 php.ini，您可以在 post_max_size 行中更改它

Answer 3

这样试试；

- (void)addNewItem:(SH_NewItem *)newItem withCompletitionBlock:(void(^)(NSArray *items, NSError *error, NSDictionary *userInfo))completitionBlock
{
    AFHTTPClient *client = [AFHTTPClient clientWithBaseURL:[NSURL URLWithString:[[SH_Shared sharedInstance] getBaseURL]]];

    //main cover image...
    NSData *imageData = UIImageJPEGRepresentation(newItem.image, JPEG_IMAGE_QUALITY);


    NSData *imageData1 = UIImageJPEGRepresentation(newItem.image1, JPEG_IMAGE_QUALITY);
    NSData *imageData2 = UIImageJPEGRepresentation(newItem.image2, JPEG_IMAGE_QUALITY);
    NSData *imageData3 = UIImageJPEGRepresentation(newItem.image3, JPEG_IMAGE_QUALITY);
    NSData *imageData4 = UIImageJPEGRepresentation(newItem.image4, JPEG_IMAGE_QUALITY);

    NSDictionary *params  = [[NSDictionary alloc]init];

   params = [NSDictionary dictionaryWithObjectsAndKeys:
                            newItem.title, @"title",
                            newItem.itemDescription, @"description",
                            [[SH_Shared sharedInstance] token], @"token",
                            nil];

    NSLog(@"params-%@",params);

    NSMutableURLRequest *request = [client multipartFormRequestWithMethod:@"POST" path:@"new_item" parameters:params constructingBodyWithBlock: ^(id <AFMultipartFormData> formData) {
        if (imageData != nil)
            [formData appendPartWithFileData:imageData name:@"images[0]" fileName:@"image_ad.png" mimeType:@"multipart/form-data"];


        if (imageData1 != nil)
            [formData appendPartWithFileData:imageData1 name:@"images[1]" fileName:@"image_ad1.png" mimeType:@"multipart/form-data"];
        if (imageData2 != nil)
            [formData appendPartWithFileData:imageData2 name:@"images[2]" fileName:@"image_ad2.png" mimeType:@"multipart/form-data"];
        if (imageData3 != nil)
            [formData appendPartWithFileData:imageData3 name:@"images[3]" fileName:@"image_ad3.png" mimeType:@"multipart/form-data"];
        if (imageData4 != nil)
            [formData appendPartWithFileData:imageData4 name:@"images[4]" fileName:@"image_ad4.png" mimeType:@"multipart/form-data"];

    }];


    AFHTTPRequestOperation *op = [[AFHTTPRequestOperation alloc] initWithRequest:request];

    [self getDataWithOperation:op completitionBlock:^(NSData *data, NSError *error, NSDictionary *userInfo) {
        CJSONDeserializer *deserializer = [CJSONDeserializer deserializer];

        NSError *deserializeError = nil;

        NSString *str = [[NSString alloc]  initWithData:data encoding:NSUTF8StringEncoding];

        NSLog(@"Response: %@", str);


     NSDictionary *requestResponseDict = [deserializer deserialize:data error:&deserializeError];

        NSString *status = [requestResponseDict valueForKey:kStatus];

        BOOL isSuccess = [[status valueForKey:kSuccess] boolValue];

        if (isSuccess)
        {
            // it's OK

        }
        else
        {
            // its error
        }
    }];
}

Answer 4

我使用以下代码和多部分表单数据完成了它。

responseData = [NSMutableData data];
    NSString *service = @"http:///registerUser.php";

    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
    [request setURL:[NSURL URLWithString:service]];
    [request setHTTPMethod:@"POST"];

// 创建边界...

NSString *boundary = @"---------------------------14737809831466499882746641449";
    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
    [request addValue:contentType forHTTPHeaderField: @"Content-Type"];

// 创建文章正文

NSMutableData *body = [NSMutableData data];
    [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[@"Content-Disposition: form-data; name=\"profile_photo_link\"; filename=\"ipodfile.png\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];

 UIImageView *imgvUserImage = [[UIImageView alloc]init];
    imgvUserImage.image= [UIImage imageNamed:@"register_btn.png"];

    NSData * imageData=[NSData dataWithData:UIImagePNGRepresentation(imgvUserImage.image)];

    [body appendData:[NSData dataWithData:imageData]];
    [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];


[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"username\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];

    [body appendData:[[NSString stringWithFormat:@"%@",txtUserName.text] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];

// 将帖子的正文设置为请求

 [request setHTTPBody:body];
    postconnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];

** 用于响应

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
    [responseData setLength:0];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
    [responseData appendData:data];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    [self removeProgressIndicator];
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    if (connection == postconnection)
    {
        NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
        NSLog(@"%@",responseString);
        //   NSDictionary *deserializedData = [responseString objectFromJSONString];
        //  NSString *string = [deserializedData objectForKey:@"Status"];


    }
}