我有一个包含纸张ID和纸张的html文件。所以我想按顺序打印这些ID和论文。 以下是html文件和示例输出。
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<BODY bgColor=#ffffff leftMargin=0 topMargin=0 rightMargin=0 marginwidth="0"
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<DIV class=conf><A class=confName
href="http://ehw.jpl.nasa.gov/events/ahs2006/">1st Conference on Adaptive
Hardware and Systems (AHS-2006)</A></DIV>
<DIV class=menuoc>OpenConf Conference Management System</DIV>
<DIV class=menu>
<DIV class=menuitem><A
href="http://www.eng.bahcesehir.edu.tr/openconf/chair/">Chair Home</A></DIV>
<DIV class=menuitem><A
href="http://www.eng.bahcesehir.edu.tr/openconf/chair/signout.php">Sign
Out</A></DIV>
<DIV class=menufiller>Logged in as: ahs2006 </DIV></DIV>
<DIV class=mainbody><BR>
<P class=header>Assign Reviews</P>
<FORM action=/openconf/chair/assign_reviews.php method=post>
<DL>
<DT>
<P><B>Select Paper(s):</B></P>
<DD>
<P>[ Paper ID - Title (# Reviewers) ]</P>
<DD><SELECT multiple size=10 name=papers[]> <OPTION value=2> 2 -
Switchable Glass: A possible medium for Evolvable Hardware (4)</OPTION>
<OPTION value=3> 3 - An Efficient Multi-Objective Evolutionary
Algorithm for Combinational Circuit Design (3)</OPTION> <OPTION
value=4> 4 - A Background Mismatch Calibration for Capacitive
Digital-to-Analog Converters (3)</OPTION> <OPTION value=5> 5 -
Designing Electronic Circuits by Means of Gene Expression Programming
(3)</OPTION> <OPTION value=6> 6 - Coherence Based Fault Detection
And Error Correction (3)</OPTION> <OPTION value=7> 7 - Wormhole
Routing with Virtual Channels using Dynamic Rate Control for Network-on...
(2)</OPTION> <OPTION value=8> 8 - Noise Analysis of Phase Locked
Loops (3)</OPTION> <OPTION value=9> 9 - Design and Analysis of a
Second Order Phase Locked Loops (PLLs) (2)</OPTION> <OPTION value=10>10 -
SW-HW Co-design and fault tolerant implementation for the LRID Wireless
communication... (3)</OPTION> <OPTION value=11>11 - Adaptive PID Controller
Using Parameter Optimization Algorithm (2)</OPTION> <OPTION value=12>12 - A
Novel Self-organizing Hybrid Network Protocol (2)</OPTION> <OPTION
value=13>13 - An Adaptive FPGA-Based Mechatronic Control System Supporting
Partial Reconfiguration... (3)</OPTION> <OPTION value=14>14 - Generalized
Disjunction Decomposition for the Evolution of Programmable Logic Array...
(3)</OPTION> <OPTION value=15>15 - Woofer-Tweeter Adaptive Optics System
(1)</OPTION> <OPTION value=16>16 - A Re-Programmable Platform for Dynamic
Burn-in Test of Xilinx VirtexII 3000 FPGA... (3)</OPTION> <OPTION
value=17>17 - Using hardware-based particle swarm method for dynamic
optimization of adaptive ... (2)</OPTION> <OPTION value=18>18 -
Hardware/software coevolution of genome programs and cellular processors
(2)</OPTION> <OPTION value=19>19 - Systolic Array Based Adaptive Beamformer
Modelling in SystemC Environment (2)</OPTION> <OPTION value=20>20 - A
Reconfigurable Hardware Design Using FPGA (2)</OPTION> <OPTION value=21>21 -
An FPGA Implemented Processor Architecture with Adaptive Resolution
(2)</OPTION> <OPTION value=22>22 - Evolving Hardware with
Self-reconfigurable connectivity in Xilinx FPGAs (2)</OPTION> <OPTION
value=23>23 - Particle Swarm Optimization with Discrete Recombination: An
Online Optimizer for... (2)</OPTION> <OPTION value=24>24 - Towards the
Integration of Drive Control Loop Electronics of the JPL/Boeing Gyroscope...
(2)</OPTION> <OPTION value=25>25 - An Incremental Evolutionary Strategy for
the Design of FIR Filters Targeting Real... (2)</OPTION> <OPTION value=26>26
- Adaptive Micro-Antenna on Silicon Substrate (3)</OPTION> <OPTION
value=27>27 - Towards Fluent Sensor Networks: A Scalable and Robust
Self-Deployment Approach (3)</OPTION> <OPTION value=28>28 - Comparison of
Fuzzy-C Means, Hard C-Means and Differential Evolution Algorithm in...
(2)</OPTION> <OPTION value=29>29 - Evolutionary Design of Digital Circuits:
Where Are Current Limits? (2)</OPTION> <OPTION value=30>30 - GEZGİN &
GEZGİN-2: Adaptive Real-Time Image Processing Subsystems for Earth
Observing... (3)</OPTION> <OPTION value=31>31 - A Multi-objective Genetic
Algorithm for On-chip Real-time Adaptation of a Multi-... (2)</OPTION>
<OPTION value=32>32 - An Efficient Technique for Preventing Single Event
Disruptions in Synchronous and... (1)</OPTION> <OPTION value=33>33 -
Architecture of a Dynamically Reconfigurable NoC for Adaptive Reconfigurable
MPSoC (0)</OPTION> <OPTION value=34>34 - Embedded Reconfigurable Array
Fabrics for Efficient Implementation of Image Compression... (1)</OPTION>
<OPTION value=35>35 - Routing in Wireless Sensor Networks Using Ant Colony
Optimization (2)</OPTION> <OPTION value=36>36 - Simulation of
Multifunctional Combinational Modules Controlled by Vdd (3)</OPTION> <OPTION
value=37>37 - Reconfigurable Parallel Computing Architecture for On-Board
Data Processing (2)</OPTION> <OPTION value=38>38 - On comparison of Variable
Length Representations by Means of Unconstrained Evolution... (3)</OPTION>
<OPTION value=39>39 - VLSI Implementation of LMS Equaliser with Adaptive
Length Selection for Wireless... (0)</OPTION> <OPTION value=41>41 - A
Scalable Reconfigurable Analog to Digital Converter Architecture Targeting
Low... (0)</OPTION> <OPTION value=42>42 - Linear Prediction with
Differential Evolution Algorithm (2)</OPTION> <OPTION value=43>43 - Genetic
Algorithm based Engine for Domain-Specific Reconfigurable Arrays
(0)</OPTION> <OPTION value=44>44 - Non-Uniform Search Domain based Genetic
Algorithm for the Synthesis and Continuous... (2)</OPTION> <OPTION
value=45>45 - Design Concepts for a Dynamically Reconfigurable Wireless
Sensor Node (2)</OPTION> <OPTION value=46>46 - On-Board Partial Run-Time
Reconfiguration for Pico-Satellite Constellations (2)</OPTION> <OPTION
value=47>47 - A Framework of Evolvable and Reconfigurable Sensor Networks
for Aerospace –based... (0)</OPTION> <OPTION value=48>48 - Analytical
Modelling of Power Attenuation under Parameter Fluctuations with
Applications... (2)</OPTION> <OPTION value=49>49 - A New State Space
Representation Method for Adaptive Log Domain Systems (2)</OPTION> <OPTION
value=50>50 - Swarm Based Incremental Learning for Combinational Circuit
Evolution (2)</OPTION> <OPTION value=51>51 - Gene Regulation Mechanisms
introduced in the E valuation Criteria for a Hardware... (2)</OPTION>
<OPTION value=52>52 - Automatic Hybrid Genetic Algorithm Based Printed
Circuit Board Inspection (2)</OPTION> <OPTION value=53>53 - Population based
FPGA solution to Mastermind game (2)</OPTION> <OPTION value=54>54 - A Large
Scale Adaptable Multiplier for Cryptographic Applications (2)</OPTION>
<OPTION value=55>55 - A Self-Tuning Analog Proportional-Integral-Derivative
(PID) Controller (2)</OPTION> <OPTION value=56>56 - Self-Configurable Neural
Network Processor for Adaptable FIR Filters (3)</OPTION> <OPTION value=57>57
- On-Chip Evolution Using a Soft Processor Core Applied to Image Recognition
(2)</OPTION> <OPTION value=58>58 - A Novel Adaptive Viterbi Algorithm and
Its Implementation (2)</OPTION> <OPTION value=59>59 - An Efficient Hardware
Architecture for H.264 Adaptive Deblocking Filter (2)</OPTION> <OPTION
value=60>60 - A Low-Complexity Self-Calibrating Adaptive Quadrature Receiver
(2)</OPTION> <OPTION value=61>61 - A Honeycomb Development Architecture for
Robust Fault-Tolerant Design (2)</OPTION> <OPTION value=62>62 - Sate-Space
based Analytical Modelling for Real-Time Fault Recovery and Self-Repair...
(2)</OPTION> <OPTION value=63>63 - Strategies to On- Line Failure Recovery
in Self- Adaptive Systems based on Dynamic... (2)</OPTION> <OPTION
value=64>64 - A Platform for Digital Intrinsic Hardware Evolution
(2)</OPTION> <OPTION value=65>65 - Face Recognition Using a Gabor Filter
Bank Approach (2)</OPTION> <OPTION value=66>66 - Protecting Fingerprint Data
using Watermarking (2)</OPTION> <OPTION value=67>67 - Debug Support for
System-on-Chips, Considerations for Reconfigurable and Hybrid ...
(2)</OPTION> <OPTION value=68>68 - Novel Techniques for Ensuring Secure
Communications for Distributed Low Power Devices (2)</OPTION> <OPTION
value=69>69 - A Modular Framework for the Evolution of Circuits on
Configurable Transistor Array... (2)</OPTION> <OPTION value=70>70 - Power
Driven Reconfigurable Complex Continuous Wavelet Transform Processor
(2)</OPTION> <OPTION value=71>71 - A Tuning Technique for Switched-Capacitor
Circuits (0)</OPTION> <OPTION value=72>72 - An Automatic Technique to
Synthesize System-on-a-Chip to Adapt to Changing Environments (2)</OPTION>
<OPTION value=73>73 - Picosatellite Constellations for Remote Sensing in LEO
(2)</OPTION> <OPTION value=74>74 - Evolvable Hardware Applied to
Nanotechnology (1)</OPTION> <OPTION value=75>75 - Gate-level Morphogenetic
Evolvable Hardware for Scalability and Adaptation on FPGAs (2)</OPTION>
<OPTION value=76>76 - Synthesis of MOS Analog Circuits by Evolutionary
Methods (2)</OPTION> <OPTION value=77>77 - An Adaptive HDL Design
Methodology for Hard IP and Soft IP Co-Protection (2)</OPTION> <OPTION
value=78>78 - FSM and HSM watermarking: A Tutorial (3)</OPTION> <OPTION
value=79>79 - Physics-based Model applied to Evolvable Hardware (2)</OPTION>
<OPTION value=80>80 - A Generic On-Chip Debugger for Wireless Sensor
Networks (goCDWSN) (2)</OPTION> <OPTION value=81>81 - The Gannet
Service-based SoC: A Service-level Reconfigurable Architecture (2)</OPTION>
<OPTION value=82>82 - A FPGA simulation using asexual genetic algorithms for
integrated self-repair (2)</OPTION> <OPTION value=83>83 - USING THE
“CELOXICA” FPGA BOARD AND THE MACHINE LEARNING ALGORITHM “LEM3..
(2)</OPTION> <OPTION value=84>84 - A Comparing Design of Satellite Attitude
Control System Based on Reaction Wheel (0)</OPTION></SELECT>
<P></P>
<DT>
<P><B>Select Reviewer(s):</B></P>
<DD>
<P><SPAN class=note>Tip: Click on ID, Name, or Reviews on the line below to
re-sort this list (page will reload)</SPAN></P>
<DD>
<P>[ Reviewer ID - <A
href="http://www.eng.bahcesehir.edu.tr/openconf/chair/assign_reviews.php?s=name">Name</A>
(# <A
href="http://www.eng.bahcesehir.edu.tr/openconf/chair/assign_reviews.php?s=reviews">Reviews</A>)
]</P>
<DD><SELECT multiple size=10 name=reviewers[]> <OPTION value=4> 4
- [PC] Nizamettin Aydin (0)</OPTION> <OPTION value=5> 5 - [PC]
Yalcin Cekic (0)</OPTION> <OPTION value=6> 6 - [PC] Didier
Keymeulen (1)</OPTION> <OPTION value=7> 7 - [PC] Emin Anarim
(0)</OPTION> <OPTION value=8> 8 - [PC] Murat Askar (0)</OPTION>
<OPTION value=9> 9 - [PC] Peter Athanas (3)</OPTION> <OPTION
value=10>10 - [PC] Juergen Becker (3)</OPTION> <OPTION value=11>11 - [PC]
Neil Bergmann (3)</OPTION> <OPTION value=12>12 - [PC] John Choma
(2)</OPTION> <OPTION value=13>13 - [PC] Carlos A. Coello Coello (3)</OPTION>
<OPTION value=14>14 - [PC] Sorin Cristoloveanu (1)</OPTION> <OPTION
value=15>15 - [PC] Antonio Di Nola (1)</OPTION> <OPTION value=16>16 - [PC]
Wai-Chi Fang (3)</OPTION> <OPTION value=17>17 - [PC] F. Joel Ferguson
(0)</OPTION> <OPTION value=18>18 - [PC] Dario Floreano (1)</OPTION> <OPTION
value=19>19 - [PC] Manfred Glesner (3)</OPTION> <OPTION value=20>20 - [PC]
Maya Gokhale (3)</OPTION> <OPTION value=21>21 - [PC] Pauline Haddow
(3)</OPTION> <OPTION value=22>22 - [PC] Ilker Hamzaoglu (1)</OPTION> <OPTION
value=23>23 - [PC] Tetsuya Higuchi (2)</OPTION> <OPTION value=24>24 - [PC]
Daniel Howard (3)</OPTION> <OPTION value=25>25 - [PC] Lishan Kang
(3)</OPTION> <OPTION value=26>26 - [PC] Haluk Konuk (3)</OPTION> <OPTION
value=27>27 - [PC] John Koza (3)</OPTION> <OPTION value=28>28 - [PC] Jason
Lahn (1)</OPTION> <OPTION value=29>29 - [PC] Bernard Manderick (3)</OPTION>
<OPTION value=30>30 - [PC] Trent McConaghy (2)</OPTION> <OPTION value=31>31
- [PC] Bob McKay (1)</OPTION> <OPTION value=32>32 - [PC] Brian Meadows
(3)</OPTION> <OPTION value=33>33 - [PC] Karlheinz Meier (2)</OPTION> <OPTION
value=34>34 - [PC] Mohammad Mojarradi (2)</OPTION> <OPTION value=35>35 -
[PC] J. M. Moreno (2)</OPTION> <OPTION value=36>36 - [PC] Masahiro Murakawa
(3)</OPTION> <OPTION value=37>37 - [PC] Alex Orailoglu (0)</OPTION> <OPTION
value=38>38 - [PC] Christos Papachristou (3)</OPTION> <OPTION value=39>39 -
[PC] Marek A. Perkowski (1)</OPTION> <OPTION value=40>40 - [PC] Viktor
Prasanna (3)</OPTION> <OPTION value=41>41 - [PC] Justinian Rosca
(3)</OPTION> <OPTION value=42>42 - [PC] Eduardo Sanchez (3)</OPTION> <OPTION
value=43>43 - [PC] Radu Secareanu (2)</OPTION> <OPTION value=44>44 - [PC]
Sakir Sezer (3)</OPTION> <OPTION value=45>45 - [PC] Hajime Shibata
(3)</OPTION> <OPTION value=46>46 - [PC] Horia-Nicolai Teodorescu
(3)</OPTION> <OPTION value=47>47 - [PC] Jim Torresen (3)</OPTION> <OPTION
value=48>48 - [PC] Andy Tyrrell (3)</OPTION> <OPTION value=49>49 - [PC]
Sezer Goren Ugurdag (0)</OPTION> <OPTION value=50>50 - [PC] Ranga Vemuri
(3)</OPTION> <OPTION value=51>51 - [PC] Tanya Vladimirova (3)</OPTION>
<OPTION value=52>52 - [PC] Svetlana Yanushkevich (3)</OPTION> <OPTION
value=53>53 - [PC] Xin Yao (3)</OPTION> <OPTION value=54>54 - [PC] Nukhet
Yetis (0)</OPTION> <OPTION value=55>55 - [PC] Sanyou Zeng (3)</OPTION>
<OPTION value=56>56 - [PC] Nazeeh Aranki (3)</OPTION> <OPTION value=57>57 -
[PC] Hugo deGaris (3)</OPTION> <OPTION value=58>58 - [PC] Erik Dirkx
(3)</OPTION> <OPTION value=59>59 - [PC] Ahmet Erdogan (2)</OPTION> <OPTION
value=60>60 - [PC] Sharon Graves (2)</OPTION> <OPTION value=61>61 - [PC]
David Gwaltney (2)</OPTION> <OPTION value=62>62 - [PC] Alister Hamilton
(2)</OPTION> <OPTION value=63>63 - [PC] Alan Hunsberger (3)</OPTION> <OPTION
value=64>64 - [PC] Srinivas Katkoori (2)</OPTION> <OPTION value=65>65 - [PC]
Semion Kizhner (3)</OPTION> <OPTION value=66>66 - [PC] Gregory Larchev
(2)</OPTION> <OPTION value=67>67 - [PC] Derek Linden (1)</OPTION> <OPTION
value=68>68 - [PC] Klaus McDonald-Maier (1)</OPTION> <OPTION value=69>69 -
[PC] Julian Miller (1)</OPTION> <OPTION value=70>70 - [PC] Lukas Sekanina
(3)</OPTION> <OPTION value=71>71 - [PC] Raphael Some (3)</OPTION> <OPTION
value=72>72 - [PC] Adrian Stoica (3)</OPTION> <OPTION value=73>73 - [PC]
Gianluca Tempesti (1)</OPTION> <OPTION value=74>74 - [PC] Anil Thakoor
(2)</OPTION> <OPTION value=75>75 - [PC] Gunnar Tufte (3)</OPTION> <OPTION
value=76>76 - [PC] Tina Yu (2)</OPTION> <OPTION value=77>77 - [PC] Rolf
Drechsler (3)</OPTION> <OPTION value=78>78 - [PC] Rajesh Galivanche
(3)</OPTION> <OPTION value=79>79 - [PC] Paul Hasler (2)</OPTION> <OPTION
value=80>80 - [PC] Kalmanje S Krishnakumar (0)</OPTION> <OPTION value=81>81
- [PC] Osman Nuri Ucan (0)</OPTION> <OPTION value=82>82 - [PC] H Fatih
Ugurdag (0)</OPTION></SELECT>
<P></P>
<DT><INPUT type=submit value="Assign Reviews" name=submit> </DT></DL></FORM>
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我想使用perl创建的txt文件是：
2 - Switchable Glass: A possible medium for Evolvable Hardware (4)
3 - An Efficient Multi-Objective Evolutionary Algorithm for Combinational Circuit Design (3)
4 - A Background Mismatch Calibration for Capacitive Digital-to-Analog Converters (3)
5 - Designing Electronic Circuits by Means of Gene Expression Programming (3)
6 - Coherence Based Fault Detection And Error Correction (3)
7 - Wormhole Routing with Virtual Channels using Dynamic Rate Control for Network-on... (2)
8 - Noise Analysis of Phase Locked Loops (3)
9 - Design and Analysis of a Second Order Phase Locked Loops (PLLs) (2)
10 - SW-HW Co-design and fault tolerant implementation for the LRID Wireless communication... (3)
11 - Adaptive PID Controller Using Parameter Optimization Algorithm (2)
12 - A Novel Self-organizing Hybrid Network Protocol (2)
13 - An Adaptive FPGA-Based Mechatronic Control System Supporting Partial Reconfiguration... (3)
14 - Generalized Disjunction Decomposition for the Evolution of Programmable Logic Array... (3)
15 - Woofer-Tweeter Adaptive Optics System (1)
16 - A Re-Programmable Platform for Dynamic Burn-in Test of Xilinx VirtexII 3000 FPGA... (3)
17 - Using hardware-based particle swarm method for dynamic optimization of adaptive ... (2)
18 - Hardware/software coevolution of genome programs and cellular processors (2)
19 - Systolic Array Based Adaptive Beamformer Modelling in SystemC Environment (2)
20 - A Reconfigurable Hardware Design Using FPGA (2)
21 - An FPGA Implemented Processor Architecture with Adaptive Resolution (2)
22 - Evolving Hardware with Self-reconfigurable connectivity in Xilinx FPGAs (2)
23 - Particle Swarm Optimization with Discrete Recombination: An Online Optimizer for... (2)
24 - Towards the Integration of Drive Control Loop Electronics of the JPL/Boeing Gyroscope... (2)
25 - An Incremental Evolutionary Strategy for the Design of FIR Filters Targeting Real... (2)
26 - Adaptive Micro-Antenna on Silicon Substrate (3)
27 - Towards Fluent Sensor Networks: A Scalable and Robust Self-Deployment Approach (3)
28 - Comparison of Fuzzy-C Means, Hard C-Means and Differential Evolution Algorithm in... (2)
29 - Evolutionary Design of Digital Circuits: Where Are Current Limits? (2)
依此类推......
到目前为止，我已经编写了这段代码，但我无法理解为什么它不起作用。它不会向屏幕和文本文件打印任何内容。任何帮助将不胜感激。谢谢！
use strict;
use warnings;
use HTML::TreeBuilder;
my $tree = HTML::TreeBuilder->new_from_content(
do { local $/; <DATA> }
);
open(my $fh, '>', 'outputs.txt');
my $i = 2;
for ( $tree->look_down( 'name' => 'papers' ) ) {
my $papers = $_->look_down( 'OPTION value' => 'i' )->as_trimmed_text;
# my $comment = $_->look_down( 'class' => 'content' )->as_trimmed_text;
# my $name = $_->look_down( '_tag' => 'h3' )->as_trimmed_text;
# $name =~ s/^Re:\s*//;
# $name =~ s/\s*$location\s*$//;
print "Paper: $papers\n";
print $fh "Paper: $papers\n";
$i++;
}
答案 0 :(得分：3)
您使用look_down过度复杂，该foreach my $papers ( $tree->look_down( 'name' => 'papers[]' ) ) {
foreach my $option ( $papers->find( 'option' ) ) {
say $option->as_trimmed_text;
}
}
用于属性。只需find() the <option> elements。
name另请注意，<select>的{{1}}属性为papers[]，而非papers。 []是名称的一部分。
答案 1 :(得分：2)
试试这个：
#! /usr/bin/env perl
use strict;
use warnings;
use HTML::TreeBuilder;
my $tree = HTML::TreeBuilder->new_from_content(
do { local $/; <DATA> }
);
# $tree->dump;
for ( $tree->look_down( 'name' => 'papers[]' ) ) {
for my $p ( $_->look_down( '_tag' => 'option' ) ) {
print "Paper: " . $p->as_trimmed_text( extra_chars => '\xA0' ) . "\n";
}
}
__DATA__
...
您的代码有两个问题：有趣的部分名为papers[]，而不是papers（我使用$tree->dump来查找），以及参数和返回值你的第二个look_down()完全搞砸了。我不确定你为什么要这样做。
答案 2 :(得分：1)
或者更接近原始代码：
use strict;
use warnings;
use HTML::TreeBuilder;
use Data::Dumper;
my $tree = HTML::TreeBuilder->new_from_content(
do { local $/; <DATA> }
);
open(my $fh, '>', 'outputs.txt');
my $i = 2;
for my $select ( $tree->look_down( 'name' => 'papers[]' ) ) {
while (my $option = $select->look_down( 'value' => $i)) {
my $papers = $option->as_trimmed_text;
print "Paper: $papers\n";
print $fh "Paper: $papers\n";
$i++;
}
}
如上所述，名称为papers[]而不是paper，而且您的值指向i而不是$i。