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我可以直接在终端中运行 java -classpath 命令而不会出现问题，但是一旦我尝试在 cron 中执行它就会引发此错误：

Usage: java [-options] class [args...]
           (to execute a class)
   or  java [-options] -jar jarfile [args...]
           (to execute a jar file)

where options include:
    -d32          use a 32-bit data model if available
    -d64          use a 64-bit data model if available (implies -server, only for x86_64)
    -client       to select the "client" VM
    -server       to select the "server" VM
    -jvm          is a synonym for the "client" VM  [deprecated]
    -hotspot      is a synonym for the "client" VM  [deprecated]
                  The default VM is client.

    -cp <class search path of directories and zip/jar files>
    -classpath <class search path of directories and zip/jar files>
                  A : separated list of directories, JAR archives,
                  and ZIP archives to search for class files.
    -D<name>=<value>
                  set a system property
    -verbose[:class|gc|jni]
                  enable verbose output`

研究告诉我，这可能是环境路径问题？使用终端与 cron 时如何判断我的路径是什么？

我正在从 cron 调用 java，crontab 类似于：

0 3 * * * * java -classpath /Users/tb582/Desktop/sample1.jar:/Users/tb582……

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1 回答 1

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只需在 cron 中指定整个路径：

输入“哪个java”

应该输出类似这样的东西：

/usr/bin/java
于 2012-05-18T21:02:44.807 回答