小编Sve*_*lov的帖子

我用java创建了一个docker镜像,并在图像中使用coppying jar文件.我的Dockerfile是:

FROM anapsix/alpine-java
MAINTAINER myNAME 
COPY testprj-1.0-SNAPSHOT.jar /home/testprj-1.0-SNAPSHOT.jar
RUN java -jar /home/testprj-1.0-SNAPSHOT.j

执行以下命令后

docker build -t imageName.

在控制台中,我看到应用程序和everthing的输出很好.但是,当我停止图像时,我不知道如何再次运行图像？执行以下命令时:

docker run -i -t imageName java -jar /home/testprj-1.0-SNAPSHOT.jar

应用程序再次运行,但在我的Dockerfile中我已经写了这个命令.如何在没有此命令的情况下运行映像,应用程序会自动运行

我正在尝试打开Jenkins端口https，但收到以下错误并且Jenkins无法启动

java.io.IOException: Failed to start a listener: winstone.HttpsConnectorFactory
at winstone.Launcher.spawnListener(Launcher.java:209)
at winstone.Launcher.<init>(Launcher.java:150)
at winstone.Launcher.main(Launcher.java:354)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at Main._main(Main.java:312)
at Main.main(Main.java:136)
Caused by: winstone.WinstoneException: Error getting the SSL context object
at winstone.AbstractSecuredConnectorFactory.getSSLContext(AbstractSecuredConnectorFactory.java:216)
at winstone.HttpsConnectorFactory.createConnector(HttpsConnectorFactory.java:56)
at winstone.HttpsConnectorFactory.start(HttpsConnectorFactory.java:41)
at winstone.Launcher.spawnListener(Launcher.java:207)
... 8 more`
       Caused by: java.security.UnrecoverableKeyException: Cannot recover key
at sun.security.provider.KeyProtector.recover(Unknown Source)
at sun.security.provider.JavaKeyStore.engineGetKey(Unknown Source)
at sun.security.provider.JavaKeyStore$JKS.engineGetKey(Unknown Source)
at sun.security.provider.KeyStoreDelegator.engineGetKey(Unknown Source)
at sun.security.provider.JavaKeyStore$DualFormatJKS.engineGetKey(Unknown Source)
at java.security.KeyStore.getKey(Unknown Source) …

我想创建一个方法,返回包含它们的字母的按钮数组.我写了这个方法,但我不确定到底发生了什么？

public JButton [] button(){
    JButton [] button = null ;
    for(int i = 0 ;i<26 ;i++){
        String letter  = String.valueOf((char)(i + 'A'));
        button[i] = new JButton(letter);
    }
    return  button() ;
}