英文:
Starting a Java-process in Go
问题
我正在尝试使用Go启动一个Java进程，但无法让Java识别到类路径。代码看起来有点像这样：
args := []string{
"-Xmx64m",
"-Dmy.property=value",
"-cp",
"lib/jar1.jar:lib/jar2.jar",
"com.things.MyClass",
}
c := exec.Command(javaBinary, args...)
不幸的是，当我执行这段代码时，JVM会报错Error: Could not find or load main class。然而，如果我将c.Args的输出直接在终端中运行，似乎一切正常，这表明我可能以某种错误的方式启动了进程。
有没有更好的方法来做这个？
英文:
I am trying to start a Java-process using Go but am unable to get Java to recognise the classpath. The code looks somewhat like:
args := []string{
"-Xmx64m",
"-Dmy.property=value,
"-cp",
"lib/jar1.jar:lib/jar2.jar",
"com.things.MyClass",
}
c := exec.Command(javaBinary, args...)
Unfortunately when executing this I get the dreaded Error: Could not find or load main class from the JVM. However if I take the output from c.Args and run it directly in a terminal it seems to work just fine, which to me indicates that I am somehow launching the process incorrectly.
Is there a better way of doing this?
答案1
得分: 1
请忽略这个问题，请注意，错误在 args 数组中有一个额外的空格：
args := []string{
"-Xmx64m",
"-Dmy.property=value ", //<--尾随空格
...
}
这个额外的空格导致进一步的解析停止，从而导致缺少类路径。
英文:
Disregard this question please, the error was an extra space in the args array:
args := []string{
"-Xmx64m",
"-Dmy.property=value ", //<--trailing space
...
}
The extra space stops further parsing from continuing leading to a missing classpath.
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