Getting Started Java Web --XML

 

 

What is XML

XML uses: 1.Java program as an XML configuration profiles

2. The data generated for program storage (XML data carrier is very good)

3. The data transmission between the network

The difference between XML and HXML

XML data is stored as a file, there is no preset labels, label their own definition, HTML large number of predefined label '

XML focusing stored transmission data, HTML for displaying information;

XMLd document structure

 

 

hr.dtd

<?xml version="1.0" encoding="UTF-8"?>
<!ELEMENT hr (employee+)>
<!ELEMENT employee (name,age,salary,department)>
<!ATTLIST employee no CDATA "">
<!ELEMENT name (#PCDATA)>
<!ELEMENT age (#PCDATA)>
<!ELEMENT salary (#PCDATA)>
<!ELEMENT department (dname,address)>
<!ELEMENT dname (#PCDATA)>
<!ELEMENT address (#PCDATA)>

hr.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hr SYSTEM "hr.dtd">
<!-- 人力资源管理系统 -->
<hr>
	<employee no="3301">
		<name>李铁柱</name>
		<age>37</age>
		<salary>3600</salary>
		<department>
			<dname>人事部</dname>
			<address>XX大厦-B105</address>
		</department>
	</employee>
	<employee no="3302">
		<name>林海</name>
		<age>50</age>
		<salary>7000</salary>
		<department>
			<dname>财务部</dname>
			<address>XX大厦-B106</address>
		</department>
	</employee>
	<employee no="3303">
		<name>安娜</name>
		<age>24</age>
		<salary>4600</salary>
		<department>
			<dname>人事部</dname>
			<address>XX大厦-B105</address>
		</department>
	</employee>
	<employee no="3304">
		<name>张晓宇</name>
		<age>29</age>
		<salary>3000</salary>
		<department>
			<dname>后勤部</dname>
			<address>XX大厦-B108</address>
		</department>
	</employee>

	<employee no="3305">
		<name>赵子轩</name>
		<age>19</age>
		<salary>1500</salary>
		<department>
			<dname>后勤部</dname>
			<address>XX大厦-B108</address>
		</department>
	</employee>

	<employee no="3306">
		<name>张晓璇</name>
		<age>20</age>
		<salary>1700</salary>
		<department>
			<dname>后勤部</dname>
			<address>XX大厦-B108</address>
		</department>
	</employee>
	<employee no="3307">
		<name>张檬</name>
		<age>43</age>
		<salary>8700</salary>
		<department>
			<dname>会计部</dname>
			<address>XX大厦-B103</address>
		</department>
	</employee>
	<employee no="3308">
		<name>李梅</name>
		<age>33</age>
		<salary>8700</salary>
		<department>
			<dname>工程部</dname>
			<address>XX大厦-B104</address>
		</department>
	</employee>
	<employee no="3309">
		<name>张三</name>
		<age>31</age>
		<salary>4000</salary>
		<department>
			<dname>会计部</dname>
			<address>XX大厦-B103</address>
		</department>
	</employee>
	<employee no="3310">
		<name>李四</name>
		<age>23</age>
		<salary>3000</salary>
		<department>
			<dname>工程部</dname>
			<address>XX大厦-B104</address>
		</department>
	</employee>
</hr>