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xml DTD #8

Open saltfish666 opened 6 years ago

saltfish666 commented 6 years ago

DTD

用来约束XML文件格式的。

（chrome 不行，用IDEA。）

saltfish666 commented 6 years ago

示例

hi.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE class SYSTEM "/usr/local/apache-tomcat-8.5.29/webapps/examples/spring2/xmlTest/hi.dtd">
<class>

    <student>
        <name>li</name>
        <age>12</age>
        <info>66666</info>
    </student>

    <student>
        <name>shuai</name>
        <age>22</age>
        <info>77777</info>
    </student>

</class>

hi.dtd

<!ELEMENT class (student+)>
    <!ELEMENT student (name,age,info)>
        <!ELEMENT name (#PCDATA)>
        <!ELEMENT age (#PCDATA)>
        <!ELEMENT info (#PCDATA)>
saltfish666 commented 6 years ago

约束 韩顺平教程

没有在DTD定义过的，都不能用