<！[CDATA[]>在XML中意味著什么？我經(jīng)常覺得這很奇怪CDATA標(biāo)記入XML檔案：<![CDATA[some stuff]]>我注意到CDATA標(biāo)簽總是出現(xiàn)在開頭，然后跟著一些東西。但有時(shí)它被使用，有時(shí)卻不是。我想是為了標(biāo)記some stuff是在之后插入的“數(shù)據(jù)”。但是什么樣的數(shù)據(jù)是some stuff？我用XML標(biāo)記寫的東西難道不是某種數(shù)據(jù)嗎？
3 回答
慕村225694
TA貢獻(xiàn)1880條經(jīng)驗(yàn) 獲得超4個(gè)贊
<!ENTITY MyParamEntity "Has been expanded">
<!-- Within this comment I can use ]]> and other reserved characters like < &, ', and ", but %MyParamEntity; will not be expanded (if I retrieve the text of this node it will contain %MyParamEntity; and not "Has been expanded") and I can't place two dashes next to each other. -->
<![CDATA[ Within this Character Data block I can use double dashes as much as I want (along with <, &, ', and ") *and* %MyParamEntity; will be expanded to the text "Has been expanded" ... however, I can't use the CEND sequence. If I need to use CEND I must escape one of the brackets or the greater-than sign using concatenated CDATA sections. ]]>
<description>An example of escaped CENDs</description><!-- This text contains a CEND ]]> --><!-- In this first case we put the ]] at the end of the first CDATA block and the > in the second CDATA block --><data><![CDATA[This text contains a CEND ]]]]><![CDATA[>]]></data><!-- In this second case we put a ] at the end of the first CDATA block and the ]> in the second CDATA block --><alternative><![CDATA[This text contains a CEND ]]]><![CDATA[]>]]></alternative>
開心每一天1111
TA貢獻(xiàn)1836條經(jīng)驗(yàn) 獲得超13個(gè)贊
<example-code>while (x < len && !done) {
print( "Still working, 'zzz'." );
++x;
}</example-code><example-code><![CDATA[
while (x < len && !done) {
print( "Still working, 'zzzz'." );
++x;
}
]]></example-code>添加回答
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