Spring：根据 XSD 架构验证 REST 控制器

目前我有 RestController 和以下代码

package be.smartask.api;

import be.smartask.api.model.NumberValue;
import be.smartask.api.model.TextValue;
import be.smartask.api.model.Translations;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;


/**
 * @author Glenn Van Schil
 *         Created on 21/01/2016
 */
@CrossOrigin
@RestController
@RequestMapping(path = "/values")
public class Controller {

    @RequestMapping(method = RequestMethod.POST, headers = "Value-Type=text")
    ResponseEntity<?> createAttribute(@RequestBody TextValue value) {
        System.out.println(value.getCode());
        for (Translations.Translation translation : value.getTranslations().getTranslation()) {
            System.out.println(translation.getLang());
            System.out.println(translation.getValue());
        }
        return new ResponseEntity<>(HttpStatus.CREATED);
    }

    @RequestMapping(method = RequestMethod.POST, headers = "Value-Type=number")
    ResponseEntity<?> createAttribute(@RequestBody NumberValue value) {
        System.out.println(value.getMinValue());
        System.out.println(value.getMaxValue());
        return new ResponseEntity<>(HttpStatus.CREATED);
    }
}

这很好用，我可以发布这样的 NumberValue：

<numberValue id="id" minValue="0" maxValue="10"/>

但是当我发布文本值到数值方法时

<textvalue code="LUXE">
    <translations>
        <translation lang="en">luxury car</translation>
    </translations>
</textvalue>

它仍然有效。它只是将 minValue 和 maxValue 保留为 0,0。

我的问题是：当正文与我的 xsd 文件中定义的不完全相同时，如何强制执行 400: Bad Request （或类似的内容）？根据定义，我的意思是 xml 标记的名称不同或缺少必需的 xs:attribute，...

我的 xsd 文件：

<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified"
           xmlns:xs="http://www.w3.org/2001/XMLSchema">

            <!-- ValueVO -->
    <xs:complexType name="geopoint">
        <xs:attribute type="xs:double" name="lat"/>
        <xs:attribute type="xs:double" name="lon"/>
    </xs:complexType>

    <xs:complexType name="translations">
        <xs:sequence>
            <xs:element name="translation" minOccurs="0" maxOccurs="unbounded">
                <xs:complexType>
                    <xs:simpleContent>
                        <xs:extension base="xs:string">
                            <xs:attribute type="xs:string" name="lang" use="required"/>
                        </xs:extension>
                    </xs:simpleContent>
                </xs:complexType>
            </xs:element>
        </xs:sequence>
    </xs:complexType>

    <xs:complexType name="value">
        <xs:attribute type="xs:string" name="id" use="required"/>
    </xs:complexType>

    <xs:complexType name="textValue">
        <xs:complexContent>
            <xs:extension base="value">
                <xs:sequence>
                    <xs:element type="translations" name="translations"/>
                </xs:sequence>
                <xs:attribute type="xs:string" name="code" use="required"/>
            </xs:extension>
        </xs:complexContent>
    </xs:complexType>

    <xs:complexType name="numberValue">
        <xs:complexContent>
            <xs:extension base="value">
                <xs:attribute type="xs:double" name="minValue" use="required"/>
                <xs:attribute type="xs:double" name="maxValue" use="required"/>
            </xs:extension>
        </xs:complexContent>
    </xs:complexType>

    <xs:complexType name="dateValue">
        <xs:complexContent>
            <xs:extension base="value">
                <xs:attribute type="xs:date" name="minValue" use="required"/>
                <xs:attribute type="xs:date" name="maxValue" use="required"/>
            </xs:extension>
        </xs:complexContent>
    </xs:complexType>

    <xs:complexType name="cityValue">
        <xs:complexContent>
            <xs:extension base="value">
                <xs:sequence>
                    <xs:element type="geopoint" name="geopoint"/>
                    <xs:element type="translations" name="translations"/>
                </xs:sequence>
            </xs:extension>
        </xs:complexContent>
    </xs:complexType>

    <xs:complexType name="timeValue">
        <xs:complexContent>
            <xs:extension base="value"/>
        </xs:complexContent>
    </xs:complexType>

    <xs:element name="value" type="value"/>
    <xs:element name="textValue" type="textValue"/>
    <xs:element name="numberValue" type="numberValue"/>
    <xs:element name="dateValue" type="dateValue"/>
    <xs:element name="cityValue" type="cityValue"/>
    <xs:element name="timeValue" type="timeValue"/>

    <xs:element name="values">
        <xs:complexType>
            <xs:sequence>
                <xs:element ref="value" maxOccurs="unbounded" minOccurs="0"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
    <!-- END ValueVO --> 
</xs:schema>

UPDATE

我根据 Sheetal Mohan Sharma 的回答将以下内容添加到我的 spring 配置中

<?xml version="1.0" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd


http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <context:component-scan base-package="be.smartask.api"/>

    <mvc:annotation-driven/>

    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>

    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="marshallingHttpMessageConverter"/>
                <bean class="org.springframework.http.converter.StringHttpMessageConverter"/>
            </list>
        </property>
    </bean>

    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
    </bean>
    <bean id="marshallingHttpMessageConverter"
          class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter"
          p:marshaller-ref="jaxb2Marshaller" p:unmarshaller-ref="jaxb2Marshaller"/>

    <bean id="jaxb2Marshaller" class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
        <property name="schema" value="classpath:schema/xsd/smartaskRead.xsd"/>
        <property name="classesToBeBound">
            <list>
                <value>be.smartask.api.model.NumberValue</value>
                <value>be.smartask.api.model.TextValue</value>
            </list>
        </property>
    </bean>
</beans>

但 NumberValue 仍然接受 TextValue...

您可以查看使用 jaxb marshaller 和 unmarshaller 使用消息转换器和 jaxmashaller 来检查 XSD。如果验证失败，将抛出错误，但可能不具体。检查下面的链接。

<bean id="marshallingHttpMessageConverter"
class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter"p:marshaller-ref="jaxb2Marshaller" p:unmarshaller-ref="jaxb2Marshaller" />

<bean id="jaxb2Marshaller">
    <property name="schema" value="classpath:/mySchema.xsd"/>
    <property name="classesToBeBound">
        <list>
            <value>com.xyz.RequestPojo</value>
            <value>com.xyz.ResponsePojo</value>
        </list>
    </property>
</bean>

几个好的例子 -here http://devilspace.org/2013/07/05/how-to-make-xsd-validation-in-a-rest-based-web-service-xml-request-by-using-xsd-file-and-jaxbmarshaller/ and here http://www.ibm.com/developerworks/web/library/wa-spring3webserv/index.html?ca=drs-