Schema技术的使用小结.

水深无声 2021-10-16 01:16 272阅读 0赞

首先编写Schema,对要编写的XML进行规范

<?xml version="1.0" encoding="UTF-8"?>
    <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" >
        <xs:element name="books">
            <xs:complexType>
                <xs:sequence> 
                    <xs:element name="book" maxOccurs="unbounded">
                        <xs:complexType>
                            <xs:sequence>
                                <xs:element name ="name" type="xs:string"></xs:element>
                                <xs:element name ='author' type="xs:string"></xs:element>
                                <xs:element name ="price" type="xs:string"></xs:element>
                            </xs:sequence>
                            <xs:attribute name ="id" type="xs:positiveInteger" use="required"></xs:attribute>
                        </xs:complexType>
                    </xs:element>
                </xs:sequence>
            </xs:complexType>
        </xs:element>
    </xs:schema>

这里是根据规范写的xml文档

<?xml version ="1.0" encoding="UTF-8"?>
    <books  xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance" 
     xsi:noNamespaceSchemaLocation = "{book1.xsd}">
    	<book  id="1">
    		<name>洛洛历险记</name>
    		<author>落落</author>
    		<price>98.3</price>
    	</book>
    </books>

编写java代码判断是够正确

1 import java.io.File;
     2 import java.io.IOException;
     3 import javax.xml.transform.Source;
     4 import javax.xml.transform.stream.StreamSource;
     5 import javax.xml.validation.Schema;
     6 import javax.xml.validation.SchemaFactory;
     7 import javax.xml.validation.Validator;
     8 
     9 import org.xml.sax.SAXException;
    10 /**
    11  * Schema技术验证编写的xml是否符合规范
    12  * @author 小王同学
    13  *
    14  */
    15 public class Test {
    16     public static void main(String[] args) throws SAXException {
    17         //1.创建SchemaFactory工厂
    18         SchemaFactory sch =SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");//这里必须要写这个
    19         //2.建立验证文件对象
    20         File schemaFile = new File("book1.xsd");//xsd的文件规范
    21         //3.利用schemaFactory工厂接受文件对象,生成schema对象
    22         Schema sce = sch.newSchema(schemaFile);
    23         //4.产生对此schema的验证器
    24         Validator validator=  sce.newValidator();
    25         //5.要准备数据源
    26         Source source =new StreamSource("book.xml");//需要验证的xml文件
    27         //6.开始验证.
    28         try {
    29             validator.validate(source);
    30             System.out.println("成功!");
    31         } catch (IOException e) {
    32             // TODO Auto-generated catch block
    33             e.printStackTrace();
    34         }
    35         
    36     }
    37 }

努力.

转载于:https://www.cnblogs.com/xw1024/p/11244205.html