Java 如何在未知XML标记上失败？

在我的SpringBoot2.1应用程序中，我想提供一个XML-HTTP-API

在现有XSD模式的基础上，我生成了java类（使用jaxb）。生成的代码大致如下所示：

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "CustomerRequestType", propOrder = {
    "firstName",
    "lastName"
})
public class CustomerRequestType {

    @XmlElement(name = "firstName")
    protected List<FirstNameType> firstName;
    @XmlElement(name = "lastName")
    protected List<LastNameType> lastName;

    // ...getter methods...
}

@RestController
@RequestMapping("customer.xml")
public class CustomerController {

    @PostMapping
    public CustomerResponseType postCustomer(@RequestBody CustomerRequestType anfrage) {
      // ...business code...
    }
}

当反序列化带有未知标记或属性的请求时，我怎么能让带jackson的spring启动失败呢

<Customer>
    <firstName>Bob</firstName>
    <lastName>Schmitt</lastName>

    <unknownTag unknownProperty="1234"/>

</Customer>

---

据我所知，Jackson主要用于JSON数据。它还支持XML和一些JAXB注释。但它不支持XML模式验证

看起来，您实际上是在寻找模式验证。然后您应该使用JAXB作为XML封送器

另见：

---

您需要检查

Spring Boot

使用哪个转换器来反序列化

XML

负载。在您的例子中，它可能是

Jaxb2RootElementHttpMessageConverter

。要使用

Jackson

属性，您需要使用

MappingJackson2XmlHttpMessageConverter

，它可以检查未知属性并引发

unrecognedPropertyException

异常。要定制

Jackson

的映射器配置，我们可以使用

Jackson2ObjectMapperBuilderCustomizer

bean

请看下面的示例：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import org.springframework.http.converter.xml.MappingJackson2XmlHttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

@Configuration
public class JacksonMvcConfiguration extends WebMvcConfigurationSupport {

    @Autowired
    private Jackson2ObjectMapperBuilderCustomizer customizer;

    public MappingJackson2XmlHttpMessageConverter mappingJackson2XmlHttpMessageConverter() {
        Jackson2ObjectMapperBuilder xmlBuilder = Jackson2ObjectMapperBuilder.xml();
        customizer.customize(xmlBuilder);

        return new MappingJackson2XmlHttpMessageConverter(xmlBuilder.build());
    }

    @Override
    protected void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        converters.add(mappingJackson2XmlHttpMessageConverter());

        super.configureMessageConverters(converters);
    }
}

import org.springframework.beans.factory.annotation.Autowired；
导入org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer；
导入org.springframework.context.annotation.Configuration；
导入org.springframework.http.converter.HttpMessageConverter；
导入org.springframework.http.converter.json.Jackson2ObjectMapperBuilder；
导入org.springframework.http.converter.xml.MappingJackson2XmlHttpMessageConverter；
导入org.springframework.web.servlet.config.annotation.WebMVC配置支持；
导入java.util.List；
@配置
公共类JacksonMvcConfiguration扩展了WebMVCConfiguration支持{
@自动连线
私有Jackson2ObjectMapperBuilderCustomizer定制器；
公共映射Jackson2xmlhttpMessageConverter映射Jackson2xmlhttpMessageConverter（）{
Jackson2ObjectMapperBuilder xmlBuilder=Jackson2ObjectMapperBuilder.xml（）；
customizer.customize（xmlBuilder）；
返回新的MappingJackson2XmlHttpMessageConverter（xmlBuilder.build（））；
}
@凌驾
受保护的无效配置MessageConverters（列表
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import org.springframework.http.converter.xml.MappingJackson2XmlHttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

@Configuration
public class JacksonMvcConfiguration extends WebMvcConfigurationSupport {

    @Autowired
    private Jackson2ObjectMapperBuilderCustomizer customizer;

    public MappingJackson2XmlHttpMessageConverter mappingJackson2XmlHttpMessageConverter() {
        Jackson2ObjectMapperBuilder xmlBuilder = Jackson2ObjectMapperBuilder.xml();
        customizer.customize(xmlBuilder);

        return new MappingJackson2XmlHttpMessageConverter(xmlBuilder.build());
    }

    @Override
    protected void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        converters.add(mappingJackson2XmlHttpMessageConverter());

        super.configureMessageConverters(converters);
    }
}