有人知道如何在Node.js中打印堆栈跟踪吗?
当前回答
如果你只想记录错误的堆栈跟踪(而不是错误消息),Node 6及以上会自动在堆栈跟踪中包含错误名称和消息,如果你想做一些自定义错误处理,这有点烦人:
console.log (error.stack.replace(错误。信息,”)
这个解决方案将只记录错误名称和堆栈跟踪(因此,例如,您可以格式化错误消息,并在代码中的其他地方以您希望的方式显示它)。
上面的例子只打印错误名称,后面跟着堆栈跟踪,例如:
Error:
at /Users/cfisher/Git/squashed/execProcess.js:6:17
at ChildProcess.exithandler (child_process.js:213:5)
at emitTwo (events.js:106:13)
at ChildProcess.emit (events.js:191:7)
at maybeClose (internal/child_process.js:877:16)
at Socket.<anonymous> (internal/child_process.js:334:11)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at Pipe._handle.close [as _onclose] (net.js:498:12)
而不是:
Error: Error: Command failed: sh ./commands/getBranchCommitCount.sh HEAD
git: 'rev-lists' is not a git command. See 'git --help'.
Did you mean this?
rev-list
at /Users/cfisher/Git/squashed/execProcess.js:6:17
at ChildProcess.exithandler (child_process.js:213:5)
at emitTwo (events.js:106:13)
at ChildProcess.emit (events.js:191:7)
at maybeClose (internal/child_process.js:877:16)
at Socket.<anonymous> (internal/child_process.js:334:11)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at Pipe._handle.close [as _onclose] (net.js:498:12)
其他回答
现在主机上有一个专门的功能:
console.trace()
在v15.12.0中,有各种方法可以做到这一点,
1. console.trace(anything)
2. Error.captureStackTrace(Object)
3. console.log(new Error().stack)
4. Try Catch - Use console.log(e), where `e` is catched by catch block
或者更好地使用 在任何Javascript代码中的stacktracejs
任何Error对象都有一个堆栈成员,该成员捕获了构造它的点。
var stack = new Error().stack
console.log( stack )
或者更简单地说:
console.trace("Here I am!")
据我所知,在nodejs中打印完整的堆栈跟踪是不可能的,你可以只打印“部分”堆栈跟踪,你无法看到你从代码中的哪里来,只是异常发生的地方。这就是瑞恩·达尔在youtube视频中解释的内容。http://youtu.be/jo_B4LTHi3I为了精确,至少56:30。希望这能有所帮助
在控制台以更易读的方式打印错误的堆栈跟踪:
console.log(ex, ex.stack.split("\n"));
结果示例:
[Error] [ 'Error',
' at repl:1:7',
' at REPLServer.self.eval (repl.js:110:21)',
' at Interface.<anonymous> (repl.js:239:12)',
' at Interface.EventEmitter.emit (events.js:95:17)',
' at Interface._onLine (readline.js:202:10)',
' at Interface._line (readline.js:531:8)',
' at Interface._ttyWrite (readline.js:760:14)',
' at ReadStream.onkeypress (readline.js:99:10)',
' at ReadStream.EventEmitter.emit (events.js:98:17)',
' at emitKey (readline.js:1095:12)' ]