XML文件和dtd关联(XML file and dtd associated)

 我有一个简单的XML文件练习的问题。 这是名为“Newfile.xml”的XML文件 
 
 
 
 
 
  
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="students.xsl"?>
<!DOCTYPE students SYSTEM "student.dtd">
  <student id="100026">
    <name>Joe Average</name>
    <age>21</age>
    <major>Biology</major>
    <results>
      <result course="Math 101" grade="C-"/>
      <result course="Biology 101" grade="C+"/>
      <result course="Statistics 101" grade="D"/>
    </results>
  </student>
  <student id="100078">
    <name>Jack Doe</name>
    <age>18</age>
    <major>Physics</major>
    <major>XML Science</major>
    <results>
      <result course="Math 101" grade="A"/>
      <result course="XML 101" grade="A-"/>
      <result course="Physics 101" grade="B+"/>
      <result course="XML 102" grade="A"/>
    </results>
  </student>
</students>
 
 
 
 
 
 这是一个名为“student.dtd”的相对dtd文件，放在同一个目录中 
 
 
 
 
 
  
<?xml version="1.0" encoding="UTF-8"?>

<!ELEMENT students (student+)>

<!ELEMENT student (name,age,major,results)>
<!ATTLIST student id CDATA #REQUIRED>

<!ELEMENT name (#PCDATA)>
<!ELEMENT age (#PCDATA)>
<!ELEMENT major (#PCDATA)>
<!ELEMENT results (result+)>


<!-- <!ELEMENT result (grade,course)> -->
<!ELEMENT result (#PCDATA)>
<!ATTLIST result grade CDATA #REQUIRED>
<!ATTLIST result course CDATA #REQUIRED>
 
 
 
 
 
 当我尝试使用Eclipse运行Newfile.xml时，它会说：“错误行14：跟在根元素之后的文档中的标记必须格式良好。” 
 
 错误在哪里？ 你可以帮我吗？ 

I've a problem with a simple xml file exercise. This is the XML file called "Newfile.xml"
 
 
 
 
 
  
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="students.xsl"?>
<!DOCTYPE students SYSTEM "student.dtd">
  <student id="100026">
    <name>Joe Average</name>
    <age>21</age>
    <major>Biology</major>
    <results>
      <result course="Math 101" grade="C-"/>
      <result course="Biology 101" grade="C+"/>
      <result course="Statistics 101" grade="D"/>
    </results>
  </student>
  <student id="100078">
    <name>Jack Doe</name>
    <age>18</age>
    <major>Physics</major>
    <major>XML Science</major>
    <results>
      <result course="Math 101" grade="A"/>
      <result course="XML 101" grade="A-"/>
      <result course="Physics 101" grade="B+"/>
      <result course="XML 102" grade="A"/>
    </results>
  </student>
</students>
 
 
 
 
 
And this is the relative dtd file called "student.dtd" and placed in the same directory
 
 
 
 
 
  
<?xml version="1.0" encoding="UTF-8"?>

<!ELEMENT students (student+)>

<!ELEMENT student (name,age,major,results)>
<!ATTLIST student id CDATA #REQUIRED>

<!ELEMENT name (#PCDATA)>
<!ELEMENT age (#PCDATA)>
<!ELEMENT major (#PCDATA)>
<!ELEMENT results (result+)>


<!-- <!ELEMENT result (grade,course)> -->
<!ELEMENT result (#PCDATA)>
<!ATTLIST result grade CDATA #REQUIRED>
<!ATTLIST result course CDATA #REQUIRED>
 
 
 
 
 
When i try to run Newfile.xml with Eclipse it say: "Error line 14: The markup in the document following the root element must be well-formed."
 
Where is the error? Can you help me?

原文：https://stackoverflow.com/questions/34001596