JAXB 是否支持 xsd:restriction? [英] Does JAXB support xsd:restriction?

问题描述

<xs:element name="age">
  <xs:simpleType>
    <xs:restriction base="xs:integer">
      <xs:minInclusive value="0"/>
      <xs:maxInclusive value="120"/>
    </xs:restriction>
  </xs:simpleType>
</xs:element>

所以我希望它像这样被转换成 Java 代码:

So I want it to get converted to Java code like this:

public void setAge(int age){
    if(age < 0 || age > 120){
         //throw some exception
    }
     //setting the age as it is a valid value
}

在 JAXB 中可以吗?

Is it possible in JAXB?

曾见过一些 WebService 客户端存根生成器这样做，可能是axis2 webservice，但不确定.

Had seen some WebService Client stub generator doing this maybe axis2 webservice but not sure.

推荐答案

JAXB (JSR-222) 规范不包括在域模型中生成快速失败的逻辑.现在的一种常见做法是以注释(或 XML)的形式表达验证规则并对其运行验证.Bean 验证 (JSR-303) 对此进行了标准化并且适用于任何 Java EE 6 实现.

The JAXB (JSR-222) specification does not cover generating fail fast logic into the domain model. A common practice now is to express validation rules in the form of annotations (or XML) and run validation on them. Bean Validation (JSR-303) standardizes this and is available in any Java EE 6 implementation.

XJC 扩展

我自己没有尝试过以下扩展，但它似乎会生成 Bean Validation (JSR-303) 注释到来自 XML 模式的域模型表示验证规则.由于 XJC 具有很强的可扩展性，因此可能还有其他插件可用.

I have not tried the following extension myself but it appears as though it will generate Bean Validation (JSR-303) annotations onto the domain model representation validation rules from the XML schema. As XJC is very extensible there may be other plug-ins available as well.

• https://github.com/krasa/krasa-jaxb-tools

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