Groovy将execute方法添加到String中，使执行shell变得相当容易;
println "ls".execute().text
但是如果发生错误，则不会产生输出。是否有一种简单的方法可以同时得到标准错误和标准?(除了创建一堆代码来;创建两个线程来读取两个输入流，然后使用父流等待它们完成，然后将字符串转换回文本?)
如果能有这样的东西就好了;
def x = shellDo("ls /tmp/NoFile")
println "out: ${x.out} err:${x.err}"
当前回答
// a wrapper closure around executing a string
// can take either a string or a list of strings (for arguments with spaces)
// prints all output, complains and halts on error
def runCommand = { strList ->
assert ( strList instanceof String ||
( strList instanceof List && strList.each{ it instanceof String } ) \
)
def proc = strList.execute()
proc.in.eachLine { line -> println line }
proc.out.close()
proc.waitFor()
print "[INFO] ( "
if(strList instanceof List) {
strList.each { print "${it} " }
} else {
print strList
}
println " )"
if (proc.exitValue()) {
println "gave the following error: "
println "[ERROR] ${proc.getErrorStream()}"
}
assert !proc.exitValue()
}
其他回答
我觉得这个更地道:
def proc = "ls foo.txt doesnotexist.txt".execute()
assert proc.in.text == "foo.txt\n"
assert proc.err.text == "ls: doesnotexist.txt: No such file or directory\n"
正如另一篇文章提到的，这些是阻塞调用，但由于我们想要处理输出，这可能是必要的。
command = "ls *"
def execute_state=sh(returnStdout: true, script: command)
但是如果命令失败，进程将终止
"ls".execute()返回一个Process对象，这就是为什么"ls".execute()。文字作品。您应该能够读取错误流，以确定是否有任何错误。
Process上有一个额外的方法，允许您传递一个StringBuffer来检索文本:consumeProcessErrorStream(StringBuffer错误)。
例子:
def proc = "ls".execute()
def b = new StringBuffer()
proc.consumeProcessErrorStream(b)
println proc.text
println b.toString()
我自己解出来的;
def sout = new StringBuilder(), serr = new StringBuilder()
def proc = 'ls /badDir'.execute()
proc.consumeProcessOutput(sout, serr)
proc.waitForOrKill(1000)
println "out> $sout\nerr> $serr"
显示:
out> err> ls: cannot access /badDir:没有这样的文件或目录
// a wrapper closure around executing a string
// can take either a string or a list of strings (for arguments with spaces)
// prints all output, complains and halts on error
def runCommand = { strList ->
assert ( strList instanceof String ||
( strList instanceof List && strList.each{ it instanceof String } ) \
)
def proc = strList.execute()
proc.in.eachLine { line -> println line }
proc.out.close()
proc.waitFor()
print "[INFO] ( "
if(strList instanceof List) {
strList.each { print "${it} " }
} else {
print strList
}
println " )"
if (proc.exitValue()) {
println "gave the following error: "
println "[ERROR] ${proc.getErrorStream()}"
}
assert !proc.exitValue()
}
