運行Shell腳本時出現NoClassDefFoundError

Question

這是錯誤：

Exception in thread "main" java.lang.NoClassDefFoundError: org/alicebot/server/net/AliceServer
Caused by: java.lang.ClassNotFoundException: org.alicebot.server.net.AliceServer
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)

這是server.sh文件：

#!/bin/sh
echo Starting Jarvis Program D.
cd "`dirname \"$0\"`"
export ALICE_HOME=.
export SERVLET_LIB=lib/servlet.jar
export ALICE_LIB=lib/aliceserver.jar
export JS_LIB=lib/js.jar

# Set SQL_LIB to the location of your database driver.
export SQL_LIB=lib/mysql_comp.jar

# These are for Jetty; you will want to change these if you are using a different http server.
export HTTP_SERVER_LIBS=lib/org.mortbay.jetty.jar

export PROGRAMD_CLASSPATH=$SERVLET_LIB:$ALICE_LIB:$JS_LIB:$SQL_LIB:$HTTP_SERVER_LIBS
exec java -classpath $PROGRAMD_CLASSPATH -Xms64m -Xmx128m org.alicebot.server.net.AliceServer $1

這是NSTask代碼：

NSString *shstring = [NSString stringWithFormat:
                          @"%@ %@ %@", 
                          @"source", 
                          @"server.sh", 
                          @"| /usr/bin/sed '/Jarvis>/q'"
                          ];

NSTask *sh = [NSTask new];
    NSPipe *outputPipe = [NSPipe new];

    [sh setLaunchPath:@"/bin/sh"];
    [sh setArguments:[NSArray arrayWithObjects: @"-c", shstring, nil ]];
    [sh setCurrentDirectoryPath:@"/applications/jarvis/brain"];
    [sh setStandardInput:[NSPipe new]];
    [sh setStandardError:outputPipe];
    [sh setStandardOutput:outputPipe];
    [sh launch];

    NSMutableString *outputString = [NSMutableString string];
    while ([outputString rangeOfString:@"Jarvis>"].location == NSNotFound) {
        [outputString appendString:[[[NSString alloc] initWithData:[[outputPipe fileHandleForReading] readDataToEndOfFile] encoding:NSUTF8StringEncoding] autorelease]];
        NSRunAlertPanel(@"", outputString, @"", @"", @"");
    }

每當我通過NSTask運行此腳本並檢查錯誤管道時，就會出現該錯誤並僅打印回顯。

有任何想法嗎？

Answer 1

看起來工作目錄不是您期望的那樣。 您正在classpath參數中定義相對路徑。 它們是相對於當前工作目錄的。 當前工作目錄可能不知道lib/aliceserver.jar文件。 執行pwd了解當前的工作目錄。

Answer 2

用server.sh中的絕對路徑替換相對，然后使用完整路徑運行server.sh（如果server.sh有shebang行，請不要在NSTask代碼中提供server.sh，並始終檢查cd命令的退出代碼）。

這是我的server.sh文件：

#!/bin/sh
# cat ~/Desktop/charliebot/server.sh

# code from: http://sourceforge.net/projects/charliebot/

# also adapt the following files if necessary:
# ~/Desktop/charliebot/console.sh
# ~/Desktop/charliebot/targeting.sh
# ~/Desktop/charliebot/tester.sh

echo Starting Alicebot Program D.
ALICE_HOME="${HOME}/Desktop/charliebot"

cd "${ALICE_HOME}" || { echo "Could not cd to: ${ALICE_HOME}"; exit 1; }

SERVLET_LIB="${ALICE_HOME}/lib/servlet.jar"
ALICE_LIB="${ALICE_HOME}/lib/aliceserver.jar"
JS_LIB="${ALICE_HOME}/lib/js.jar"

# Set SQL_LIB to the location of your database driver.
SQL_LIB="${ALICE_HOME}/lib/mysql_comp.jar"

# These are for Jetty; you will want to change these if you are using a different http server.
HTTP_SERVER_LIBS="${ALICE_HOME}/lib/org.mortbay.jetty.jar"

PROGRAMD_CLASSPATH="${SERVLET_LIB}:${ALICE_LIB}:${JS_LIB}:${SQL_LIB}:${HTTP_SERVER_LIBS}"

export ALICE_HOME SERVLET_LIB ALICE_LIB JS_LIB HTTP_SERVER_LIBS PROGRAMD_CLASSPATH

#printf "\n\n\nPROGRAMD_CLASSPATH\n%s\n\n\n"  "$PROGRAMD_CLASSPATH" | tr ':' '\n'

exec java -classpath "$PROGRAMD_CLASSPATH" -Xms64m -Xmx128m org.alicebot.server.net.AliceServer $1

這對我有效，絲毫沒有打h。

# in Terminal.app
~/Desktop/charliebot/server.sh

我認為server.sh的參數$ 1不是必須的。 如果真是這樣，server.sh（即exec java -classpath ... $ 1）會抱怨它。 但是，是的，很高興知道可以將哪種參數作為$ 1傳遞給server.sh（...正在讀取man 1 java ...）！

當然，所有這一切都不會在循環死鎖（NSNotFound）時刪除Objective-C。 您必須實現異步stdout管道讀取機制，而不是while循環。 （例如，有關這種操作，請參見Apple的有關異步操作的“儀表板編程主題”。）