量角器 - 在Ubuntu 14.04上启动时出错

Question

我正在尝试在Ubuntu 14.04 LTS上设置Protractor，我在这个命令上遇到以下错误：

> sudo webdriver-manager start

错误是：

seleniumProcess.pid: 52352

events.js:72
    throw er; // Unhandled 'error' event
          ^
Error: spawn ENOENT
at errnoException (child_process.js:1001:11)
at Process.ChildProcess._handle.onexit (child_process.js:792:34)

webdriver-manager status结果：

selenium standalone is up to date
chromedriver is up to date
IEDriver is not present

JDK看起来已经安装（ java --version ）：

The program 'java' can be found in the following packages:
 * default-jre
 * gcj-4.8-jre-headless
 * openjdk-7-jre-headless
 * gcj-4.6-jre-headless
 * openjdk-6-jre-headless
Try: sudo apt-get install <selected package>

有任何想法吗？

Answer 1

确保安装了java：

sudo apt-get install openjdk-7-jre-headless

处理webdriver-manager不需要sudo：

webdriver-manager start