小编KVI*_*ISH的帖子

我想创建一个用于重置用户密码的表单.它应该采取current_password,然后new_password和confirm_new_password.我能够进行验证以检查新密码是否匹配.我怎么能验证current_password？有没有办法将User对象传入表单？

我正在寻找一个好的标记库.我想拥有Ajax,自动完成,并能够为每个标签存储值和标签.我发现了一些很有希望的东西,但是我无法根据自己的需求进行开发.我广泛关注的那个是:

http://textextjs.com/

我无法提交值和标签,它只接受标签作为值.还有其他图书馆可以包含我所寻找的内容吗？或者上面的图书馆有什么我想念的东西？我正在阅读它的文档,无法让它接受标签和价值.

我正在尝试通过我的应用程序发送电子邮件,我正在使用以下代码:

        if ([MFMailComposeViewController canSendMail]) {
            MFMailComposeViewController *controller = [[MFMailComposeViewController alloc] init];
            controller.mailComposeDelegate = self;

            NSString *subject = @"";
            NSString *body = @"";

            [controller setSubject:subject];
            [controller setMessageBody:body isHTML:YES];

            [self presentModalViewController:controller animated:YES];

        } else {
            NSString *message = @"Error opening mail, please make sure you have an email account setup";
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Oops" message:message delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
            [alert show];
        }

我得到了一个奇怪的错误,在我的iPhone 5上,组合屏幕弹出,没有身体(虽然身体设置在上面).如果我点击任何一个框就无法看到光标,因此无法编辑,并且发送按钮不可点击.当我关闭屏幕时,我得到以下内容:

_serviceViewControllerReady:error: Error Domain=_UIViewServiceErrorDomain Code=1 "The operation couldn’t be completed. (_UIViewServiceErrorDomain error 1.)"

但是,当我在iPhone 4s,iPhone 4和模拟器上测试时 - 它工作正常.我也在另一台iPhone …

我能够为我的Android应用程序创建构建,但是当我打开proguard时,我会收到数字警告,然后构建失败.警告类似于以下内容:

Warning: library class android.net.http.AndroidHttpClient depends on program class org.apache.http.HttpRequest
Warning: library class android.net.http.AndroidHttpClient depends on program class org.apache.http.HttpEntity
Warning: library class android.net.http.AndroidHttpClient depends on program class org.apache.http.params.HttpParams
Warning: library class android.net.http.AndroidHttpClient depends on program class org.apache.http.conn.ClientConnectionManager
Warning: library class android.net.http.AndroidHttpClient depends on program class org.apache.http.client.methods.HttpUriRequest
Warning: library class android.net.http.AndroidHttpClient depends on program class org.apache.http.HttpResponse
Warning: library class android.net.http.AndroidHttpClient depends on program class org.apache.http.client.methods.HttpUriRequest
Warning: library class android.net.http.AndroidHttpClient depends on program class org.apache.http.protocol.HttpContext
Warning: library class android.net.http.AndroidHttpClient depends on program …

我目前正在使用此方法为我的用户圆化图像的边缘：

def _add_corners(self, im, rad=100):
    circle = Image.new('L', (rad * 2, rad * 2), 0)
    draw = ImageDraw.Draw(circle)
    draw.ellipse((0, 0, rad * 2, rad * 2), fill=255)
    alpha = Image.new('L', im.size, "white")
    w, h = im.size
    alpha.paste(circle.crop((0, 0, rad, rad)), (0, 0))
    alpha.paste(circle.crop((0, rad, rad, rad * 2)), (0, h - rad))
    alpha.paste(circle.crop((rad, 0, rad * 2, rad)), (w - rad, 0))
    alpha.paste(circle.crop((rad, rad, rad * 2, rad * 2)), (w - rad, h - rad))
    im.putalpha(alpha)
    return im

舍入效果非常好，我对此很满意。但是，我还想在边缘的限制内在图像周围绘制边框。我在网上阅读的大部分内容都展示了如何在图像本身上绘制边框（而不是我正在做的圆形边框）。有没有办法做到这一点？我已阅读以下内容： …

我在Symfony2中有一个表单,我希望为用户提供一个向其添加行的选项,以防他们想要提供更多信息.我知道在JavaScript中你可以做到这一点,有没有办法在使用框架的symfony2中做到这一点？

如果没有,最好的方法是什么？通过所有验证和所有内容,在Google上搜索时找不到任何可行的选项...感谢任何建议!

所有,

我在尝试访问会话映射时遇到以下问题:

FacesContext.getCurrentInstance().getExternalContext() 
        .getSessionMap().put("userSession", session); 

我登录时看到此错误,然后等待几分钟,然后单击访问该bean的任何按钮.这是在超时之前(我已经设置了60分钟).有人可以帮忙吗？对我来说这是一个主要的表演限制......

java.lang.NullPointerException
      at com.sun.faces.context.SessionMap.put(ExternalContextImpl.java:970)
      at com.mounza.common.Util.logUser(Util.java:129)
      at com.mounza.common.Util.userStart(Util.java:159)
      at com.mounza.homepage.UserHomepageAction.<init>(UserHomepageAction.java:39)
      at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
      at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
      at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
      at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
      at java.lang.Class.newInstance0(Class.java:355)
      at java.lang.Class.newInstance(Class.java:308)
      at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:186)
      at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:106)
      at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:368)
      at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:230)
      at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:86)
      at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54)
      at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:72)
      at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:69)
      at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
      at com.sun.faces.application.ValueBindingValueExpressionAdapter.getValue(ValueBindingValueExpressionAdapter.java:113)
      at org.ajax4jsf.taglib.html.facelets.KeepAliveHandler.apply(KeepAliveHandler.java:76)
      at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
      at com.sun.facelets.tag.jsf.ComponentHandler.applyNextHandler(ComponentHandler.java:314)
      at com.sun.facelets.tag.jsf.ComponentHandler.apply(ComponentHandler.java:169)
      at com.sun.facelets.tag.jsf.core.ViewHandler.apply(ViewHandler.java:109)
      at com.sun.facelets.tag.ui.DefineHandler.applyDefinition(DefineHandler.java:64)
      at com.sun.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:131)
      at com.sun.facelets.impl.DefaultFaceletContext$TemplateManager.apply(DefaultFaceletContext.java:337)
      at com.sun.facelets.impl.DefaultFaceletContext.includeDefinition(DefaultFaceletContext.java:307)
      at com.sun.facelets.tag.ui.InsertHandler.apply(InsertHandler.java:68)
      at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
      at com.sun.facelets.tag.jsf.core.ViewHandler.apply(ViewHandler.java:109)
      at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
      at com.sun.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:119)
      at com.sun.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:49)
      at com.sun.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:25) …

可能重复:
在PHP 404标题返​​回后包括"糟糕!这个链接似乎被打破了."

我在Play中有一个自定义的404页面!项目.出于某种原因,我注意到404页面出现在所有浏览器上,除了IE9 - 它只显示了浏览器找不到的默认页面.这有什么理由吗？现在我将它在默认类路径中的Global类中实现.因此,当找不到资源时,它会在到达处理程序未找到函数后转发到错误页面.谢谢!

我可以从iOS后置摄像头捕捉图像.一切都在完美无缺地工作,除了我希望它按照我的界限拍摄照片UIView.

我的代码如下:

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    session = [[AVCaptureSession alloc] init];

    session.sessionPreset = AVCaptureSessionPresetMedium;

    captureVideoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session];
    captureVideoPreviewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
    captureVideoPreviewLayer.frame = vImagePreview.bounds;
    [vImagePreview.layer addSublayer:captureVideoPreviewLayer];

    AVCaptureDevice *device = [self backFacingCameraIfAvailable];
    NSError *error = nil;
    AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device error:&error];
    if (!input) {
        // Handle the error appropriately.
        NSLog(@"ERROR: trying to open camera: %@", error);
    }
    [session addInput:input];

    stillImageOutput = [[AVCaptureStillImageOutput alloc] init];
    NSDictionary *outputSettings = …

我在生产者/消费者上下文中将Amazon SQS用于我的应用程序。我想启用队列级别的日志记录，在这里我可以看到项目放在队列中，并在以后从队列中删除。我怎样才能做到这一点？

我已阅读以下内容：

http://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/logging-using-cloudtrail.html

但是，这不足以满足我的用例。是否不允许对AWS队列执行此操作？