Does Spring Data Cassandra support multiple keyspace repositories in the same application context? I am setting up the cassandra spring data configuration using the following JavaConfig class @Configuration @EnableCassandraRepositories(basePackages = "com.blah.repository") public class CassandraConfig extends AbstractCassandraConfiguration { @Override public String getKeyspaceName() { retu
Spring Data Cassandra是否支持同一应用程序上下文中的多个keyspace存储库? 我正在使用以下JavaConfig类设置cassandra spring数据配置 @Configuration @EnableCassandraRepositories(basePackages = "com.blah.repository") public class CassandraConfig extends AbstractCassandraConfiguration { @Override public String getKeyspaceName() { return "keyspace1"; } 在将存储库类移到不同的包后,我尝试创建第二个
I'm trying to create an application to record screen of user or from webcam and save into an video file. I tried Java Media Framework to make it work but It's fail in Windows 64 bit. I found that Java Media Framework is quite old and it isn't supported now :( My question is: Are there any another library help us record screen and video from Webcam ? If Java is not supported, Wha
我正尝试创建一个应用程序来记录用户的屏幕或来自网络摄像机的视频并保存到视频文件中。 我尝试使用Java Media Framework来使其工作,但在Windows 64位中失败。 我发现Java Media Framework比较老,现在不支持:( 我的问题是:是否有其他图书馆帮助我们记录网络摄像头的屏幕和视频? 如果不支持Java,什么语言可以提供帮助? 我发现一些应用程序具有相同的功能:+ http://www.screencast-o-matic.com/ + http://www.apowe
I am using JMF to operate my web cam.My usb webcam works perfectly with JMF, I used it in JMStudio however,when I make this call from my java code deviceListVector = CaptureDeviceManager.getDeviceList( null ); my "audio capture device" is detected however, my usb webcam at vfw://0 is not detected. To clarify, the audio capture device and the USB cam are entirely separate devices. Ho
我正在使用JMF来操作我的网络摄像头。我的USB摄像头可以与JMF完美协作,但我在JMStudio中使用它,但是,当我使用我的java代码进行此调用时 deviceListVector = CaptureDeviceManager.getDeviceList( null ); 我的“音频捕获设备”被检测到,但是,我的USB摄像头在vfw:// 0未被检测到。 为了澄清,音频捕获设备和USB摄像头是完全独立的设备。 如何从JMF中正确检测USB摄像头及其格式? 提前致谢 你也可以试试LTI-Civil或Xuggl
How can I continuously capture images from a webcam? I want to experiment with object recognition (by maybe using java media framework). I was thinking of creating two threads one thread: Node 1: capture live image Node 2: save image as "1.jpg" Node 3: wait 5 seconds Node 4: repeat... other thread: Node 1: wait until image is captured Node 2: using the "1.jpg&qu
我如何从摄像头连续捕捉图像? 我想试验对象识别(也许使用Java媒体框架)。 我正在考虑创建两个线程 一个线程: 节点1:捕捉实时图像 节点2:将图像保存为“1.jpg” 节点3:等待5秒钟 节点4:重复... 其他线程: 节点1:等待图像被捕获 节点2:使用“1.jpg”可以获得每个像素的颜色 节点3:将数据保存在数组中 节点4:重复... 这个JavaCV实现工作正常。 码: import org.bytedeco.javacv.*; import st
I use Spring 4 to create a simple application. Recently, I'm adding Spring Security 3 to the project but always get the Error Code 302 ( so it redirect to home page always ). Here is my SecurityConfig : @Configuration @EnableWebMvcSecurity @ComponentScan(basePackages = { "com.moon.repository" }) public class SecurityConfig extends WebSecurityConfigurerAdapter { @Override protected void c
我使用Spring 4创建一个简单的应用程序。 最近,我将Spring Security 3添加到项目中,但始终得到错误代码302(因此它总是重定向到主页 )。 这是我的SecurityConfig : @Configuration @EnableWebMvcSecurity @ComponentScan(basePackages = { "com.moon.repository" }) public class SecurityConfig extends WebSecurityConfigurerAdapter { @Override protected void configure(AuthenticationManagerBuilder auth) throws
(I'm using Eclipse Luna 4.4.0, JDK 1.8.0_05) I'm making a game, and the topology of the game world can be roughly broken down into World -> Level -> Tile , where a Tile is aa small unit of terrain. I have three projects set up, one which holds some base classes for those structures, and the other two are server and client which extend the structures in the base project for the ad
(我使用Eclipse Luna 4.4.0,JDK 1.8.0_05) 我正在做一个游戏,游戏世界的拓扑可以大致分解为World -> Level -> Tile ,其中平铺是一个小单元的地形。 我建立了三个项目,一个为这些结构保存一些基类,另外两个是服务器和客户端,它们扩展了基础项目中的结构,以满足每个项目所需的额外事项。 像这样: 基地项目: public class BaseWorld{/* ...code... */} public class BaseLevel{/* ...code... */} public cla
Java中的操作符>>>和>>什么区别? >> is arithmetic shift right, >>> is logical shift right. In an arithmetic shift, the sign bit is extended to preserve the signedness of the number. For example: -2 represented in 8 bits would be 11111110 (because the most significant bit has negative weight). Shifting it right one bit using arithmetic shift would give you 111111
Java中的操作符>>>和>>什么区别? >>是算术右移, >>>是逻辑右移。 在算术移位中,符号位被扩展以保持数字的符号性。 例如:以8位表示的-2将是11111110 (因为最重要的位具有负权重)。 使用算术移位将它右移一位会给你11111111或-1。 然而,逻辑右移并不关心该值可能代表一个有符号的数字; 它只是将所有内容向右移动,并从0开始填充。 使用逻辑移位将我们-2右移一位将给出01111111 。
I'm working on a simple dataflow based system (imagine it like a LabView editor/runtime) written in Java. The user can wire blocks together in an editor and I need type inference to ensure the dataflow graph is correct, however, most type inference examples are written in mathematical notations, ML, Scala, Perl, etc., which I don't "speak". I read about the Hindley-Milner alg
我正在研究一个简单的基于数据流的系统(想象它像一个LabView编辑器/运行库),用Java编写。 用户可以在编辑器中将块连接在一起,我需要类型推断来确保数据流图是正确的,但是,大多数类型推断示例都是用数学符号ML,Scala,Perl等编写的,我不会“说” ”。 我阅读了Hindley-Milner算法,并找到了一个我可以实现的很好的例子。 它适用于一组类似T1 = T2的约束。 但是,我的数据流图像翻译为T1> = T2(如我在各篇文章中看到
I'm trying to verify a message signed with private key, using the provided public key and a signature. The command line that works like charm is cat call.blah | openssl dgst -sha256 -verify public-key.pem -signature signature.sig Verified OK The public-key.pem has been created from X509 certificate using the command openssl x509 -pubkey -noout -in x509key.cer > public-key.pem Now I a
我正在尝试使用提供的公钥和签名来验证使用私钥签名的消息。 像魅力一样工作的命令行是 cat call.blah | openssl dgst -sha256 -verify public-key.pem -signature signature.sig Verified OK public-key.pem是使用该命令从X509证书创建的 openssl x509 -pubkey -noout -in x509key.cer > public-key.pem 现在我试图模仿在常规,这是我的代码 static void main(String[] args) { /* Verify a DSA signature */
I'm basically trying to bisect a square on the bottom left square until zero, then with recursion bisect the remaining squares top left, top right, and bottom right until all squares are filled. However, my code executes the bottom square bisection but just stops when I add the new line trying to make the bottom right bisect. Any ideas why the draw stops? I can't seem to implement the
我基本上是试图平分左下角的一个方块直到零,然后用递归平分左上角,右上角和右下角的剩余方块,直到所有方块都被填满。 但是,我的代码执行底部方形平分线,但只是在添加新线时尝试使底部平分线停止。 任何想法为什么抽签停止? 我似乎无法在左下角的第一个二等分后实现简单“+”形状的绘制。 package recursivepatterns; import java.awt.Color; import sedgewick.*; public class PersianRug { public static void s