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我有一個jar,我通常在我的.sh腳本中使用jsvc launcher作爲後臺進程運行。 現在我創建了一個新的入口點,需要檢查一些事情並在控制檯上返回一個輸出,所以在同一個.sh腳本中,我根據這些參數創建了一個開關,作爲守護程序或標準Java應用程序運行。 了SH與此類似:Java GetResourceAsStream空指針異常
#!/bin/sh
# Setup variables
EXEC=/usr/bin/jsvc
JAVA_HOME=/usr/lib/jvm/java-7-oracle
CLASS_PATH="./conf:/usr/share/java/commons-daemon.jar:./:./dist/core.jar"
do_exec()
{
$EXEC -home "$JAVA_HOME" -cp $CLASS_PATH $1 $CLASS
}
for i in `ls ./dist/lib/*.jar`
do
CLASS_PATH=${CLASS_PATH}:${i}
done
case "$1" in
start)
do_exec
;;
stop)
do_exec "-stop"
;;
check)
java -jar ./dist/core.jar check
;;
*)
echo "usage: daemon {start|stop|restart|check}" >&2
exit 3
;;
esac
我core.jar添加的不能看我core.properties文件只如果開始與「檢查」標誌,並且代碼:
public class Config {
private final static String RESOURCE_NAME = "core.properties";
private static Properties properties = null;
public static synchronized void init() {
if (properties != null) {
return;
}
try {
properties = new Properties();
properties.load(Config.class.getClassLoader().getResourceAsStream(RESOURCE_NAME)); <--- problematic line
} catch (Exception e) {
e.printStackTrace();
}
}
public static String get() {
...
}
}
唯一的例外是:
Exception in thread "main" java.lang.NullPointerException
at java.util.Properties$LineReader.readLine(Properties.java:434)
at java.util.Properties.load0(Properties.java:353)
at java.util.Properties.load(Properties.java:341)
at me.core.util.Config.init(Config.java:28)
at me.core.util.Config.get(Config.java:36)
at me.core.Main.checkCoreStatus(Main.java:55)
at me.core.Main.main(Main.java:33)
我的文件夾結構是這樣的:
root folder
|_ run.sh
|_ conf
|_ core.properties
|_ dist
|_ core.jar
|_ lib
|_ lib1.jar
|_ lib2.jar
|_ lib3.jar
|_ ....jar
|_ ....jar
我的罐子清單是如下:
Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Created-By: Apache Maven
Built-By: Administrator
Build-Jdk: 1.7.0_21
Main-Class: me.zenfeed.Main
Class-Path: ./conf/ ./dist/lib/junit-4.11.jar ./dist/lib/hamcrest-core-1.3.jar ....etc...
我看到conf目錄中包含的,但我不知道是否./conf/包括所有目錄中的文件。 我應該怎麼做才能使屬性文件作爲守護程序以及標準jar來讀取?
謝謝