Question

我有一个ruby脚本

#!/usr/bin/ruby
require 'rubygems'
require 'mechanize'
require 'nokogiri'
require 'highline/import'
require 'stringio'

#Change based on Semester
$term = '09'
$year = '2012'
$frequency = 4  #Number of Seconds between check requests

$agent = Mechanize.new
$agent.redirect_ok = true 
$agent.user_agent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.11 Safari/535.19"
$agent.verify_mode = OpenSSL::SSL::VERIFY_NONE

#Uber simway to colorize outputin
class String
def color(c)
    colors = { 
        :black   => 30, 
        :red     => 31, 
        :green   => 32,
        :yellow  => 33, 
        :blue    => 34, 
        :magenta => 35, 
        :cyan    => 36, 
        :white   => 37 
    }
    return "\e[#{colors[c] || c}m#{self}\e[0m"
end
end

#Logins, Gets the Courses, Returns Courses Obj with Name/URL/Tools for each
def login(username, password)

#Login to the system!
page = $agent.get("https://auth.vt.edu/login?service=https://webapps.banner.vt.edu/banner-cas-prod/authorized/banner/SelfService")
login = page.forms.first
login.set_fields({
    :username => username, 
    :password => password
})
if (login.submit().body.match(/Invalid username or password/)) then
    return false
else
    return true
end
end

#Gets Course Information
def getCourse(crn)  
begin
    courseDetails = Nokogiri::HTML( $agent.get(
        "https://banweb.banner.vt.edu/ssb/prod/HZSKVTSC.P_ProcComments?CRN=#{crn}&TERM=#{$term}&YEAR=#{$year}"
    ).body)
rescue
    return false #Failed to get course
end

#Flatten table to make it easier to work with
course = {}
dataSet = false

course[:title] = courseDetails.css('td.title').last.text.gsub(/-\ +/, '')
course[:crn] = crn

courseDetails.css('table table tr').each_with_index do |row|
    #If we have a dataSet
    case dataSet
        when :rowA
            [ :i, :days, :end, :begin, :end, :exam].each_with_index do |el, i|
                if row.css('td')[i] then
                    course[el] = row.css('td')[i].text
                end
            end
        when :rowB
            [ :instructor, :type, :status, :seats, :capacity ].each_with_index do |el, i|
                course[el] = row.css('td')[i].text
            end
    end

    dataSet = false
    #Is there a dataset?
    row.css('td').each do |cell|
        case cell.text
            when "Days"
                dataSet = :rowA
            when "Instructor"
                dataSet = :rowB
        end
    end
end

return course
end

#Registers you for the given CRN, returns true if successful, false if not
def registerCrn(crn)
#Follow Path
$agent.get("https://banweb.banner.vt.edu/ssb/prod/twbkwbis.P_GenMenu?name=bmenu.P_MainMnu")
reg = $agent.get("https://banweb.banner.vt.edu/ssb/prod/hzskstat.P_DispRegStatPage")
dropAdd = reg.link_with(:href => "/ssb/prod/bwskfreg.P_AddDropCrse?term_in=#{$year}#{$term}").click

#Fill in CRN Box and Submit
crnEntry = dropAdd.form_with(:action => '/ssb/prod/bwckcoms.P_Regs')
crnEntry.fields_with(:id => 'crn_id1').first.value = crn
crnEntry['CRN_IN'] = crn
add = crnEntry.submit(crnEntry.button_with(:value => 'Submit Changes')).body

if add =~ /#{crn}/ && !(add =~ /Registration Errors/) then
    return true
else
    return false
end
end

#Main loop that checks the availaibility of each courses and fires to registerCrn on availaibility
def checkCourses(courses)

requestCount = 0
startTime = Time.new
loop do
    system("clear")

    requestCount += 1
    nowTime = Time.new

    puts "Checking Availaibility of CRNs".color(:yellow)
    puts "--------------------------------\n"
    puts "Started:\t#{startTime.asctime}".color(:magenta)
    puts "Now:    \t#{nowTime.asctime}".color(:cyan)
    puts "Request:\t#{requestCount} (Once every #{$frequency} seconds)".color(:green)
    puts "--------------------------------\n\n"

    courses.each_with_index do |c, i|

        puts "#{c[:crn]} - #{c[:title]}".color(:blue) 
        course = getCourse(c[:crn]) 
        next unless course #If throws error

        puts "Availaibility: #{course[:seats]} / #{course[:capacity]}".color(:red)

        if (course[:seats] =~ /Full/) then
        else 
            if (registerCrn(c[:crn])) then
                puts "CRN #{c[:crn]} Registration Sucessfull"
                courses.slice!(i)

            else
                puts "Couldn't Register"
            end

        end

        print "\n"
    end

    sleep $frequency
end
end

#Add courses to be checked
def addCourses 
crns = []

loop do 
    system("clear")
    puts "Your CRNs:".color(:red)
    crns.each do |crn|
        puts "  -> #{crn[:title]} (CRN: #{crn[:crn]})".color(:magenta)
    end

    #Prompt for CRN
    alt = (crns.length > 0)  ? " (or just type 'start') " : " "
    input = ask("\nEnter a CRN to add it#{alt}".color(:green) + ":: ") { |q| q.echo = true }

    #Validate CRN to be 5 Digits 
    if (input =~ /^\d{5}$/) then

        #Display CRN Info
        c = getCourse(input.to_s)
        puts "\nCourse: #{c[:title]} - #{c[:crn]}".color(:red)
        puts "--> Time: #{c[:begin]}-#{c[:end]} on #{c[:days]}".color(:cyan)
        puts "--> Teacher: #{c[:instructor]}".color(:cyan)
        puts "--> Type: #{c[:type]} || Status: #{c[:status]}".color(:cyan)
        puts "--> Availability: #{c[:seats]} / #{c[:capacity]}\n".color(:cyan)

        #Add Class Prompt
        add = ask("Add This Class? (yes/no)".color(:yellow) + ":: ") { |q| q.echo = true }
        crns.push(c) if (add =~ /yes/)

    elsif (input == "start") then
        checkCourses(crns)
    end 
end
end


def main
system("clear")
puts "Welcome to CourseAdd by mil".color(:blue)

username = ask("PID ".color(:green) + ":: ") { |q| q.echo = true }
password = ask("Password ".color(:green) + ":: " ) { |q| q.echo = "*" }

system("clear")
if login(username, password) then
    addCourses
else
    puts "Invalid PID/Password"
    exit
end
end

main

但是当我运行ruby Untitled.rb时，它会给我这个错误。

/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- mechanize (LoadError)
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
from /Users/user/Desktop/Untitled.rb:3

这是什么意思，我该如何解决？我不确定我是否需要通过IDE或终端工作。我对ruby来说是全新的，所以老实说我不知道问题是什么。

Answer 1

您需要安装机械化。在终端中，键入：

gem install mechanize

完成安装后重试脚本。如果您有其他缺少的宝石，可以使用相同的命令进行安装。

gem install <gem name>

Ruby脚本错误

1 个答案: