JAXB应用范例

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#jaxb #schema #file #下载工具 #java #filter

2009-12-26 21:26:09 根据XML生成XML schema(*.xsd)

1.下载工具trang

将trang加入path

2.生成xsd文件

Dos代码

java -jar trang.jar XXX1.xml XXX2.xsd

java -jar trang.jar DataRequestTemp2.xml dataRequest.xsd

java -jar trang.jar DataResponse.xml dataResponse.xsd

OK ，enjoy!

说明：

XXX1.xml是输入参数，此处支持的文件格式为：

rng

rnc

dtd

xml

XXX2.xsd是输出参数，此处支持的文件格式为：

rng

rnc

dtd

xsd

具体使用说明参见压缩包中的trang-manual.html文件

范例 xml

生成的XSD

生成的xsd

<?xml version="1.0" encoding="UTF-8"?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified"> <xs:element name="dataRequest"> <xs:complexType> <xs:sequence> <xs:element ref="condition"/> </xs:sequence> <xs:attribute name="ID" use="required" type="xs:integer"/> <xs:attribute name="dataName" use="required" type="xs:NCName"/> <xs:attribute name="dataType" use="required" type="xs:NCName"/> </xs:complexType> </xs:element> <xs:element name="condition"> <xs:complexType> <xs:sequence> <xs:element maxOccurs="unbounded" ref="para"/> </xs:sequence> <xs:attribute name="conditionType" use="required" type="xs:NCName"/> </xs:complexType> </xs:element> <xs:element name="para"> <xs:complexType> <xs:attribute name="name" use="required" type="xs:NCName"/> <xs:attribute name="value" use="required" type="xs:NCName"/> </xs:complexType> </xs:element> </xs:schema>

http://www.javaeye.com/topic/662077

http://lzj0470.javaeye.com/blog/243184

3.运行xjc命令由xsd生成java对象 XJC 是JDK6 自带

C:/Program Files/Java/jdk1.6.0_10/bin>xjc -d C:/Users/Public/Documents/SoftWare/

trang-20030619 -p com.huawei.bits.xml C:/Users/Public/Documents/SoftWare/trang-2

0030619/dataRequest.xsd

parsing a schema...

compiling a schema...

com/huawei/bits/xml/Condition.java

com/huawei/bits/xml/DataRequest.java

com/huawei/bits/xml/ObjectFactory.java

com/huawei/bits/xml/Para.java

4. xml To java 和 java To xml

try { File xmlDocument = new File("DataRequestTemp.xml"); JAXBContext jaxbContext = JAXBContext.newInstance(DataRequest.class); Unmarshaller unMarshaller = jaxbContext.createUnmarshaller(); SchemaFactory schemaFactory = SchemaFactory .newInstance("http://www.w3.org/2001/XMLSchema"); Schema schema = schemaFactory .newSchema(new File("dataRequest.xsd")); unMarshaller.setSchema(schema); DataRequest data = (DataRequest) unMarshaller .unmarshal(xmlDocument); } catch (JAXBException e) { System.out.println(e.toString()); } catch (SAXException e) { System.out.println(e.toString()); } try { File xmlDocument = new File("data.xml"); JAXBContext jaxbContext = JAXBContext.newInstance(DataRequest.class); Marshaller marshaller = jaxbContext.createMarshaller(); marshaller.setProperty( Marshaller.JAXB_FORMATTED_OUTPUT, true); ObjectFactory factory = new ObjectFactory(); DataRequest request = factory.createDataRequest(); Condition condition = factory.createCondition(); condition.setConditionType("filter"); Para paraID = factory.createPara(); paraID.setName("ID"); paraID.setValue("123"); condition.getPara().add(paraID); Para paraName = factory.createPara(); paraName.setName("name"); paraName.setValue("tiantian"); condition.getPara().add(paraName); request.setDataType("table"); request.setDataName("bits"); request.setID(BigInteger.valueOf(factory.hashCode())); request.setCondition(condition); // marshal to file marshaller.marshal( request, new FileOutputStream(xmlDocument)); // marshal to console marshaller.marshal( request, System.out); } catch (IOException e) { System.out.println(e.toString()); } catch (JAXBException e) { System.out.println(e.toString()); }