用saxon框架对xml数据进行过滤 -

​​用saxon框架对xml数据进行过滤​​

Saxon 是一个 XSLT 和XQuery处理器。它是使用 XML 文档和样式表作为输入，然后生成结果文档作为输出的程序，它还包括了一个串行化器，用于将结果树转换成 XML、HTML 或纯文本。

 Saxon8以上版本主要组成有：XSLT 2.0处理器、 XPath 2.0处理器、 XQuery 1.0处理器、XML Schema 1.0处理器。

XPath 教程： ​​http://www.w3school.com.cn/xpath/index.asp​​

XQuery 教程：​​http://www.w3school.com.cn/xquery/index.asp​​

 以下范例代码在saxonb9-1-0-8j包下测试通过：

1、xml文档内容

Xml代码  

<?xml version="1.0" encoding="UTF-8"?>  
<flight>  
<row flightno="CA3411" airline_code="CA" airline_namecn="中国国际航空公司" airline_nameen="Air China" city_code="SHA" city_namecn="上海虹桥" city_nameen="Shanghai" flight_date="20130202" flight_time="2200" status_code="cancel" status_namecn="取消" status_nameen="Cancel" checkin_counter="M2-3" gate="A118"/>  
<row flightno="CA3411" airline_code="CA" airline_namecn="中国国际航空公司" airline_nameen="Air China" city_code="SHA" city_namecn="上海虹桥" city_nameen="Shanghai" flight_date="20130202" flight_time="2300" status_code="fly" status_namecn="起飞" status_nameen="Fly" checkin_counter="M2-3" gate="A118"/>  
<row flightno="CZ3412" airline_code="CZ" airline_namecn="中国南方航空公司" airline_nameen="South Air" city_code="PEK" city_namecn="北京" city_nameen="Beijing" flight_date="20130203" flight_time="2200" status_code="fly" status_namecn="起飞" status_nameen="Fly" checkin_counter="M1-3" gate="A218"/>  
</flight>

2、java源码

Java代码  

public class Test2 {  
public static void main(String[] args) {  
try{  
            DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();  
            DocumentBuilder builder = builderFactory.newDocumentBuilder();  
              
//从文档中加载xml内容  
class.getResourceAsStream("/flight/flight_data.xml");  
            Document document = builder.parse(in);  
//去掉XML文档中空白部分  
              
//从字符串中加载xml内容  
//StringReader sr = new StringReader("<flight><row flightno=\"CA3411\" airline_code=\"CA\" airline_namecn=\"中国国际航空公司\" airline_nameen=\"Air China\" city_code=\"SHA\" city_namecn=\"上海虹桥\" city_nameen=\"Shanghai\" flight_date=\"20130202\" flight_time=\"2300\" status_code=\"fly\" status_namecn=\"起飞\" status_nameen=\"Fly\" checkin_counter=\"M2-3\" gate=\"A118\"/></flight>");  
//InputSource is = new InputSource(sr);  
//Document document = builder.parse(is);  
//document.normalize(); //去掉XML文档中空白部分  
              
//xQuery表达式  
new StringBuffer();  
" for $s in /flight/row where 1=1 ");  
" and contains(upper-case($s/@flightno), 'CA') ");  
" and contains(upper-case($s/@city_namecn), '海') ");  
" and upper-case($s/@airline_code)='CA' ");  
" and $s/@flight_date='20130202' ");  
" and $s/@flight_time>='2300' ");  
" and $s/@flight_time<='2300' ");  
" and $s/@status_code='fly' ");  
" return $s ");  
              
new Configuration();  
              
//静态查询上下文  
new StaticQueryContext(configuration);  
            XQueryExpression expression = context.compileQuery(sb.toString());  
              
//动态查询上下文  
new DynamicQueryContext(configuration);    
new DocumentWrapper(document, null, configuration));  
              
new Properties();  
"xml");  
"yes");  
"GBK");  
"1.0");  
              
//根据xQuery表达式解析xml文件，返回符合条件的数据，存储到writer对象  
new StringWriter();  
new StreamResult(writer), props);  
              
            System.out.println(writer.toString());  
              
catch(Exception ex){  
            ex.printStackTrace();  
        }  
    }  
}

3、输出结果

Xml代码  

<?xml version="1.0" encoding="GBK"?>  
<row airline_code="CA" airline_namecn="中国国际航空公司" airline_nameen="Air China"  
checkin_counter="M2-3"  
city_code="SHA"  
city_namecn="上海虹桥"  
city_nameen="Shanghai"  
flight_date="20130202"  
flight_time="2300"  
flightno="CA3411"  
gate="A118"  
status_code="fly"  
status_namecn="起飞"  
status_nameen="Fly"/>

作者：少帅