Javascript Node.js可以';无法获取派生进程的输出
这段代码获得的输出。怎么了?节点版本为v0.10.22Javascript Node.js可以';无法获取派生进程的输出,javascript,node.js,process,Javascript,Node.js,Process,这段代码获得的输出。怎么了?节点版本为v0.10.22 var spawn = require('child_process').spawn; var what = 'java'; var spawned = spawn(what, ['-version']); console.log('starting `'+what+' -version`'); spawned.stdout.setEncoding('utf8'); spawned.stdout.on('data', function
var spawn = require('child_process').spawn;
var what = 'java';
var spawned = spawn(what, ['-version']);
console.log('starting `'+what+' -version`');
spawned.stdout.setEncoding('utf8');
spawned.stdout.on('data', function (data) {
console.log(data);
});
spawned.on('close', function (code) {
console.log('process exit code ' + code);
});
var whendone = function() {
console.log('done');
};
setTimeout(whendone,5000);
正如您所看到的,我甚至添加了一些超时,以等待启动的进程完成。
java-version
写入stderr是,对于节点
,它需要--version
否则进入REPL。这些就是我尝试过的例子。