使用xml架构检查java值 [英] Checking a java value with an xml schema

问题描述

是否可以使用xmlchéma中的某些规则检查java对象中的值？

is it possible to check a value in a java object with some rules in a xml schéma ?

例如，我有一个字符串txt =blablabla，我应该验证它是否适用于< xs：element name =footype =string32/> ，string32限制为32 caract。最长

For exemple, I have a String txt = "blablabla", and I should verify if it's ok for <xs:element name="foo" type="string32"/>, with string32 a restriction to 32 caract. length max.

有可能吗？如果使用xml架构和jaxb是不可能的，那么还有其他架构可能吗？

Is it possible ? If it's not possible with xml schema and jaxb, is there other schema langage which is possible ?

谢谢。

推荐答案

您可以执行以下操作：

import java.io.File;
import javax.xml.XMLConstants;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.util.JAXBSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;

public class Demo {

    public static void main(String[] args) throws Exception {
        SchemaFactory sf = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI); 
        Schema schema = sf.newSchema(new File("customer.xsd")); 

        JAXBContext jc = JAXBContext.newInstance(Customer.class);

        Customer customer = new Customer();
        // populate the customer object
        JAXBSource source = new JAXBSource(jc, customer);
        schema.newValidator().validate(source);
    }

}

有关更详细的示例，请参阅：

For a more detailed example see:

• http://bdoughan.blogspot.com/2010/11/validate-jaxb-object-model-with-xml.html

• http://bdoughan.blogspot.com/2010/11/validate-jaxb-object-model-with-xml.html

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