text: var cp = require('child_process');
  let fs = require('fs');
  var child = cp.fork(/*__dirname +*/ './dealImage.js');//每个请求都单独生成一个新的子进程
  
  for( let i = 1; i < 4; i++ ){
      var input = `./${i}.png`;
      //fs.readFile(input, (err, data) => {
          child.send({input : input});
      //});
  }
  
  child.on('message', function(m) {
      console.log("返回结果为======",m.result + '\n');
      //child.kill();
  });
  
  