检验JAVA是否安装

check_java_installed.js

/*
判断JAVA是否安装
*/

var spawn = require('child_process').spawn;

exe(["/c","python","a"]);

/*
  0: success
  1: fail at step1
  2: fail at step2 
*/

function exe(command){
    
    var cmd = spawn("cmd",command);

    cmd.stdout.setEncoding("ASCII");
    cmd.stdout.on("data",function(data){
	console.log("------------------------------");
	console.log("exec",command);
	console.log("stdout:"+data);
    });

    cmd.stderr.on("data",function(data){
	console.log("------------------------------");
	console.log("stderr:"+data);
	console.log("------------------------------");
    });

    cmd.on("exit",function(code){
	console.log("exited with code:"+code);
	console.log("------------------------------");
    });
    
};