传递参数(如变量)以在casperjs中评估并登录网站

问题描述

我正在编写一个Python脚本，该脚本将用户名和密码(如params)传递给我的casperjs脚本，如下所述.但是我不知道为什么会收到错误:

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

有人可以帮我解决这个问题吗?

Can someone help me about this issue?

CasperJS.py:

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:

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();

推荐答案

问题是phantomjs的旧版本无法与casperjs一起正常使用.以下问题对问题代码进行了更正.

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.

您的脚本有多个问题

• 您不能echo尝试在casperjs脚本中分配值.因此，将这两行更改为:

• 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);

在同一脚本中:您的注释是python注释，而不是js注释，因此将#更改为//

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

在casper中:您实际上应该选择正确的输入字段:

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);

或者甚至使用casperjs提供的功能(替换完整的thenEvaluate调用):

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
});

您可以将thenEvaluate调用更改为:

you may change the thenEvaluate call to:

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

在您的python脚本中，您实际上并未使用casperjs变量，但这很好，因为您假定它在PATH中.

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

如果错误仍然存​​在或出现新错误，请尝试更新为phantomjs的较新版本.

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

生成的代码可能如下所示:

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();

这篇关于传递参数(如变量)以在casperjs中评估并登录网站的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！