学步园

xml  schema  注意：

注意 schema文件只写xmlns 就可以了 ，配置其他的有问题(本人对xml schema 命名空间啥的很不熟， 不太会配哦)

 <schema xmlns="http://www.w3.org/2001/XMLSchema">
 

<?xml version="1.0" encoding="UTF-8"?><br /> <schema xmlns="http://www.w3.org/2001/XMLSchema"><br /> <element name="post"><br /> <complexType><br /> <sequence><br /> <element name="id" type="long"></element><br /> <element name="tiebaName" type="string"></element><br /> <element name="url" type="string"></element><br /> <element name="title" type="string"></element><br /> <element name="author" type="string"></element><br /> <element name="ip" type="string"></element><br /> </sequence><br /> </complexType><br /> </element><br /> </schema>

xml 文件

<?xml version="1.0" encoding="UTF-8"?><br /> <post xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><br /> <id>0</id><br /> <tiebaName>tiebaName</tiebaName><br /> <url>url</url><br /> <title>title</title><br /> <author>author</author><br /> <ip>ip</ip><br /> </post><br />

String path = PostMarshall.class.getClassLoader().getResource("com/jaxb/tieba/").getPath();</p> <p>JAXBContext factory = JAXBContext.newInstance(Post.class);<br /> // 创建 schema<br /> Schema schema = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI).newSchema(new File(path,"post.xsd"));<br /> // 创建 marshaller<br /> Marshaller ms = factory.createMarshaller();</p> <p>Post post = new Post();<br /> Unmarshaller ums = factory.createUnmarshaller();<br /> ums.setSchema(schema);<br /> post = (Post) ums.unmarshal(new File(path,"newFile.xml"));<br /> System.out.println(post.getAuthor());<br />

如果xml 不符合规范 将会报异常：

例如 如果ip属性不写将会报异常。反之则不会。 只是ip为null而已