Pass params like variable to evaluate in casperjs and login into site

问题

I'm writing a python script that pass username and password like params to my casperjs script, describe below. But I don't know why a receive the error:

CasperError: casper.test property is only available using the `casperjs test` command
     C:/casperjs/modules/casper.js:179

Can someone help me about this issue?

CasperJS.py:

import os
import subprocess

# PATH to files
casperjs = 'c:\casperjs\bin\casperjs.exe'
app_root = os.path.dirname(os.path.realpath(__file__))
script = os.path.join(app_root, 'test2.js')

#  Request username and password
username = raw_input("Usuario:")
password = raw_input("Senha:")

# Username and password like
auth = [username, password] 

# Execute process casperjs via python
subprocess.Popen(['casperjs', script, auth[0], auth[1]], shell=True)

CasperJS.js:

var casper = require('casper').create({
    clientScript: ['jquery.min.js'],
    verbose: true,
    logLevel: "debug",
    // Disable load images
    pageSettings: {
    loadImages: true
    }
});

# variables
var url = 'http://minha.oi.com.br';
var username = casper.echo(casper.cli.raw.get(0));
var password = casper.echo(casper.cli.raw.get(1)); 

# start casperjs
casper.start(url);

# Try login on the website
casper.thenEvaluate(function(usuario, senha) {
document.querySelector('input#Ecom_User_ID').setAttribute('value', usuario);
document.querySelector('input#Ecom_Password').setAttribute('value', password);

}, { usuario: username, senha: password });

# Check the current URL
casper.then(function() {
        this.echo(this.getCurrentUrl());
});
casper.run();

回答1:

The issue was an old version of phantomjs that did not work properly with casperjs. The issues below provide corrections to the code in the question.

---

Your scripts have multiple issues

• You can't echo something and try to assign the value in your casperjs script. So change those two lines to:

  casper.echo(casper.cli.raw.get(0));
  casper.echo(casper.cli.raw.get(1));
  
  var username = casper.cli.raw.get(0);
  var password = casper.cli.raw.get(1);
  

• In the same script: Your comments are python comments and not js comments, so change # to //

• In casper: You should actually select the correct input fields:

  document.querySelector('input[name="Ecom_User_ID"]').setAttribute('value', usuario);
  document.querySelector('input[name="Ecom_Password"]').setAttribute('value', senha);
  

  Or even use a function that is provided by casperjs (replacing the complete thenEvaluate call):

  this.fillSelectors("form[name='IDPLogin']", {
      'input[name="Ecom_User_ID"]': username,
      'input[name="Ecom_Password"]': password
  });
  

• you may change the thenEvaluate call to:

  casper.thenEvaluate(function(usuario, senha) {
      // setAttribute here like above
  }, username, password);
  

• In your python script you don't actually use the casperjs variable, but that's fine since you assume that it is in PATH.

If the error persists or a new one comes up, try updating to a newer version of phantomjs.

---

The resulting code might look like this:

var casper = require('casper').create();

// variables
var url = 'http://minha.oi.com.br';
var username = casper.cli.raw.get(0);
var password = casper.cli.raw.get(1);

// start casperjs
casper.start(url);

// Try login on the website
casper.then(function(){
    this.fillSelectors("form[name='IDPLogin']", {
        'input[name="Ecom_User_ID"]': username,
        'input[name="Ecom_Password"]': password
    }, true);
    // this also sents the form
});

// Check the current URL
casper.then(function() {
    this.echo(this.getCurrentUrl());
});

casper.run();

来源：https://stackoverflow.com/questions/24266164/pass-params-like-variable-to-evaluate-in-casperjs-and-login-into-site