操作XML檔案

# 操作函式：

require 'rexml/document'
require 'pathname'
include rexml
filepath = file.join(pathname.new(file.dirname(__file__)).realpath,'book.xml')
# 建立乙個檔案物件
input = file.new(filepath)
# 解析xml檔案 input
doc = document.new(input)
# 建立根節點
root =doc.root
#在根節點下建立元素：子節點 mytest el = root.add_element("mytest")
#在mytest下面建立子節點元素 another 並且賦值id =10  #結果如下：el2 = el.add_element "another", 
#建立乙個元素節點 blah<>
el3 = element.new "blah"
el.elements << el3
el3.attributes["myid"] = "sean"
#增加文字節點方法一
el4 = element.new "xl"
el.elements << el4
el4.text= "sean"
#增加文字節點方法二
e15=element.new "myelement"
#定義父節點
el.elementshal fulton
second edition. the book you are now reading.ain't recursion grand?
the case for mars
robert zubrin
pushing toward a second home for the human race.
first man: the life of neil a. armstrong
james r. hansen
definitive biography of the first man on the moon.
操作結果：
sean
hello dolly
銆??銆??銆??銆?
0銆??銆?銆??銆??銆??銆?銆??銆??銆??銆?the ruby way
銆??銆??銆??銆?hal fulton
銆??銆??銆??銆?second edition. the book you are now reading.ain't recursion grand?
銆??銆??銆??銆?
銆??銆?
銆??銆?銆??銆??銆??銆?銆??銆??銆??銆??銆??銆?the case for mars
銆??銆??銆??銆??銆??銆?robert zubrin
銆??銆??銆??銆??銆??銆?pushing toward a second home for the human race.
銆??銆??銆??銆?
銆??銆??銆??銆?銆??銆??銆??銆??銆??銆?first man: the life of neil a. armstrong
銆??銆??銆??銆??銆??銆?james r. hansen
銆??銆??銆??銆??銆??銆?definitive biography of the first man on the moon.
銆??銆??銆??銆?
銆??銆?
sean
hello dolly
1銆??銆??銆??銆?the ruby way
銆??銆??銆??銆?hal fulton
銆??銆??銆??銆?second edition. the book you are now reading.ain't recursion grand?
銆??銆??銆??銆?
2.1the ruby way
the case for mars
first man: the life of neil a. armstrong
2.2the ruby way
the case for mars
first man: the life of neil a. armstrong
3.1hal fulton
robert zubrin
james r. hansen
3.2hal fulton
robert zubrin
james r. hansen
3.3hal fulton
robert zubrin
james r. hansen
ruby
space
0672328844
0684835509
074325631x
7.1the ruby way
the case for mars
first man: the life of neil a. armstrong
7.2the ruby way
the case for mars
first man: the life of neil a. armstrong
7.3the ruby way
the case for mars
first man: the life of neil a. armstrong
讀出 description
second edition. the book you are now reading.ain't recursion grand?
pushing toward a second home for the human race.
definitive biography of the first man on the moon.

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