[英]XML Parsing Error: The markup declarations contained or pointed to by the document type declaration must be well-formed
[英]XML to DTD error: the document type declaration must be well-formed
我是 XML 的初學者,我必須將以下 XML 轉換為 DTD
<student id="12C042">
<fName>John</fName>
<lName>Nelson</lName>
<plan>
<courses year="3">
<course>
<name> Extensible Markup Language</name>
<shortName>XML</shortName>
<record>
<grade>30</grade>
<date>12-Jan-2017</date>
</record>
</course>
<course>
<name>Object Oriented Concepts and Unified Modeling Language</name>
<shortName><![CDATA[OOP & UML]]></shortName>
</course>
</courses>
</plan>
這是我轉換后得到的DTD:
<?xml encoding="UTF-8"?>
<!ELEMENT student (fName,lName,plan)>
<!ATTLIST student
xmlns CDATA #FIXED ''
id NMTOKEN #REQUIRED>
<!ELEMENT fName (#PCDATA)>
<!ATTLIST fName
xmlns CDATA #FIXED ''>
<!ELEMENT lName (#PCDATA)>
<!ATTLIST lName
xmlns CDATA #FIXED ''>
<!ELEMENT plan (courses)>
<!ATTLIST plan
xmlns CDATA #FIXED ''>
<!ELEMENT courses (course)+>
<!ATTLIST courses
xmlns CDATA #FIXED ''
year CDATA #REQUIRED>
<!ELEMENT course (name,shortName,record?)>
<!ATTLIST course
xmlns CDATA #FIXED ''>
<!ELEMENT name (#PCDATA)>
<!ATTLIST name
xmlns CDATA #FIXED ''>
<!ELEMENT shortName (#PCDATA)>
<!ATTLIST shortName
xmlns CDATA #FIXED ''>
<!ELEMENT record (grade,date)>
<!ATTLIST record
xmlns CDATA #FIXED ''>
<!ELEMENT grade (#PCDATA)>
<!ATTLIST grade
xmlns CDATA #FIXED ''>
<!ELEMENT date (#PCDATA)>
<!ATTLIST date
xmlns CDATA #FIXED ''>
編譯器給出以下錯誤:
致命錯誤:
公眾號:null
系統 ID:file:/home/p12947/studentdtd.dtd
行號:9
列數:2
消息:文檔類型聲明包含或指向的標記聲明必須格式正確。
致命的
嘗試用“學生”元素包圍你的元素
根據您的 dtd 的有效文檔可能如下所示
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE student SYSTEM "student.dtd">
<student id="1">
<fName>John</fName>
<lName>Nelson</lName>
<plan>
<courses year="3">
<course>
<name> Extensible Markup Language</name>
<shortName>XML</shortName>
<record>
<grade>30</grade>
<date>12-Jan-2017</date>
</record>
</course>
<course>
<name>Object Oriented Concepts and Unified Modeling Language</name>
<shortName><![CDATA[OOP & UML]]></shortName>
</course>
</courses>
</plan>
</student>
<?xml version="1.0" encoding="UTF-8"?>
<persons>
<person>
<name>XYZ</name>
<age>19</age>
<gender>M</gender>
<address>
<doorno>4</doorno>
<street>ABC</street>
<city>DEL</city>
<state>IND</state>
</address>
<student>
<rollno>34</rollno>
<standard>12</standard>
<section>C</section>
</student>
</person>
</persons>
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