The*_*ron -1 regex string perl
$text = <<"EOF";
{"product_id": "5I20SL43MWDD", "title": "Woodland Imports 2 Piece Ceramic Vase Set", "primary_shelf": [{"all_paths_str": "[[\"Home Page\",\"Home\",\"Decor\",\"Vases\"]]", "locale": "en_US", "value": "Vases", "path_id": "[\"0\",\"4044\",\"133012\",\"1043827\"]", "all_paths_id": "[[\"0\",\"4044\",\"133012\",\"1043827\"]]", "tag_source": "rule", "id": "1043827", "path_str": "[\"Home Page\",\"Home\",\"Decor\",\"Vases\"]"}], "alternate_shelves": "1043827", "last_updated_at": 1471417348, "primary_category_path": "0:4044:133012:1043827", "short_description": "Includes two vase. Gray and cream color palette. No assembly required. 5 in. L x 5 in. W x 12 in. H. Weight: 6 lbs.. Check out this Vase that will beautify your interiors. Can be kept assorted or separately depending upon your needs. For added beauty, you can also add flowers to this ceramic vase to flourish your interiors with fragrance. This vase will steal the spotlight and make you win appreciations from many. Besides, this vase can also be gifted to your beloved ones.", "item_id": "40966792", "attributes": {"package_quantity": ["1"], "assembled_product_width_raw_data": ["6.0"], "assembled_product_length_raw_data": ["6.0"], "is_always_show": ["N"], "assembled_product_height_raw_data": ["15.0", "15.0"], "color": ["Brown", "Brown"], "small_parts_warning_code": ["0"], "manufacturer_part_number": ["78681"], "primary_shelf_id": ["1043827"], "shape": ["Bud"], "manufacturer_suggested_retail_price": ["75.84"], "country_of_origin_components": ["Imported"], "assembled_product_length": ["6.0 IN", "6.0"], "category": ["Vases", "Vases"], "has_warranty": ["N"], "character_primary_category_path": ["Home/Decor/Vases"], "item_master_created_date": ["1414926519000"], "offer_lifecycle_status": ["ACTIVE"], "new": ["N"], "size": ["12\" H x 5\" W x 5\" D", "12\" H x 5\" W x 5\" D"], "type": ["Other Vases"], "brand": ["Woodland Imports", "Woodland Imports"], "all_shelves": ["Vases"], "is_preorder": ["N"], "primary_shelf": ["Vases"], "material": ["Ceramic", "Ceramic"], "assembled_product_width": ["6.0 IN", "6.0"], "california_residents_prop_65_warning_required": ["N"], "lifestage": ["Adult", "Adult"], "show_button_in": ["3"], "warranty_information": ["Warranty not available for this item"], "char_primary_category_path": ["Home/Decor/Vases"], "manufacturer": ["Woodland Imports"], "actual_color": ["Brown", "Brown"], "data_source": ["Catalog"], "product_type": ["Vases"], "size_raw_data": ["12"], "wupc": ["0083730378681"], "display_status": ["PUBLISHED"], "assembled_product_weight": ["7 Pounds"], "country_of_origin_assembly": ["Imported"], "assembled_product_height": ["15.0 IN", "15.0"], "warranty_length": ["Warranty not available for this item"], "model": ["78681"], "price_per_unit_quantity": ["1"]}, "long_description": "WLI15311<br /><strong>Features</strong><br /><li>Grey and cream color palette</li><li>Made of quality ceramic</li><li>Product Type: Floor vase</li><li>Shape: Bud</li><li>Color: Grey and cream</li><li>Primary Material: Ceramic</li> <br /><strong>Dimensions</strong><br />Size 15'' H x 6'' W x 6'' D<br /><li>Overall Height - Top to Bottom: 15''</li><li>Overall Width - Side to Side: 6''</li><li>Overall Depth - Front to Back: 6''</li><li>Overall Product Weight: 5.93 lbs</li><br />Size 12'' H x 5'' W x 5'' D<br /><li>Overall Height - Top to Bottom: 12''</li><li>Overall Width - Side to Side: 5''</li><li>Overall Depth - Front to Back: 5''</li><li>Overall Product Weight: 3.24 lbs</li>"}
EOF
这是我的文字,采用json格式.我想要提取特定字段,如short_description和long_description
我正在使用这个正则表达式:
my ($title)=$text=~/"title"\s*:\s*"(.*?)"\s*,\s*"/is;**
my ($long_des)=$text=~/"long_description"\s*:\s*"(.*?)"\s*,\s*"/is;
一切都正常,但我不知道为什么long_description正则表达式不起作用,我得到一个空字符串.我需要做些什么来解决这个问题？
我建议退一步.由于JSON的上下文特性,用正则表达式破解JSON是很讨厌的.正则表达式不是上下文,所以总是一个hacky解决方案.
幸运的是,perl有一个JSON简单的模块:
#!/usr/bin/env perl
use strict;
use warnings;
use Data::Dumper;
use JSON;
my $json_str = q({"product_id": "5I20SL43MWDD", "title": "Woodland Imports 2 Piece Ceramic Vase Set", "primary_shelf": [{"all_paths_str": "[[\"Home Page\",\"Home\",\"Decor\",\"Vases\"]]", "locale": "en_US", "value": "Vases", "path_id": "[\"0\",\"4044\",\"133012\",\"1043827\"]", "all_paths_id": "[[\"0\",\"4044\",\"133012\",\"1043827\"]]", "tag_source": "rule", "id": "1043827", "path_str": "[\"Home Page\",\"Home\",\"Decor\",\"Vases\"]"}], "alternate_shelves": "1043827", "last_updated_at": 1471417348, "primary_category_path": "0:4044:133012:1043827", "short_description": "Includes two vase. Gray and cream color palette. No assembly required. 5 in. L x 5 in. W x 12 in. H. Weight: 6 lbs.. Check out this Vase that will beautify your interiors. Can be kept assorted or separately depending upon your needs. For added beauty, you can also add flowers to this ceramic vase to flourish your interiors with fragrance. This vase will steal the spotlight and make you win appreciations from many. Besides, this vase can also be gifted to your beloved ones.", "item_id": "40966792", "attributes": {"package_quantity": ["1"], "assembled_product_width_raw_data": ["6.0"], "assembled_product_length_raw_data": ["6.0"], "is_always_show": ["N"], "assembled_product_height_raw_data": ["15.0", "15.0"], "color": ["Brown", "Brown"], "small_parts_warning_code": ["0"], "manufacturer_part_number": ["78681"], "primary_shelf_id": ["1043827"], "shape": ["Bud"], "manufacturer_suggested_retail_price": ["75.84"], "country_of_origin_components": ["Imported"], "assembled_product_length": ["6.0 IN", "6.0"], "category": ["Vases", "Vases"], "has_warranty": ["N"], "character_primary_category_path": ["Home/Decor/Vases"], "item_master_created_date": ["1414926519000"], "offer_lifecycle_status": ["ACTIVE"], "new": ["N"], "size": ["12\" H x 5\" W x 5\" D", "12\" H x 5\" W x 5\" D"], "type": ["Other Vases"], "brand": ["Woodland Imports", "Woodland Imports"], "all_shelves": ["Vases"], "is_preorder": ["N"], "primary_shelf": ["Vases"], "material": ["Ceramic", "Ceramic"], "assembled_product_width": ["6.0 IN", "6.0"], "california_residents_prop_65_warning_required": ["N"], "lifestage": ["Adult", "Adult"], "show_button_in": ["3"], "warranty_information": ["Warranty not available for this item"], "char_primary_category_path": ["Home/Decor/Vases"], "manufacturer": ["Woodland Imports"], "actual_color": ["Brown", "Brown"], "data_source": ["Catalog"], "product_type": ["Vases"], "size_raw_data": ["12"], "wupc": ["0083730378681"], "display_status": ["PUBLISHED"], "assembled_product_weight": ["7 Pounds"], "country_of_origin_assembly": ["Imported"], "assembled_product_height": ["15.0 IN", "15.0"], "warranty_length": ["Warranty not available for this item"], "model": ["78681"], "price_per_unit_quantity": ["1"]}, "long_description": "WLI15311<br /><strong>Features</strong><br /><li>Grey and cream color palette</li><li>Made of quality ceramic</li><li>Product Type: Floor vase</li><li>Shape: Bud</li><li>Color: Grey and cream</li><li>Primary Material: Ceramic</li> <br /><strong>Dimensions</strong><br />Size 15'' H x 6'' W x 6'' D<br /><li>Overall Height - Top to Bottom: 15''</li><li>Overall Width - Side to Side: 6''</li><li>Overall Depth - Front to Back: 6''</li><li>Overall Product Weight: 5.93 lbs</li><br />Size 12'' H x 5'' W x 5'' D<br /><li>Overall Height - Top to Bottom: 12''</li><li>Overall Width - Side to Side: 5''</li><li>Overall Depth - Front to Back: 5''</li><li>Overall Product Weight: 3.24 lbs</li>"});
my $json = from_json($json_str);
print Dumper $json;
print "LONG:", $json ->{long_description},"\n";