JAXB-未编组的字段为null

Question

我们正在整理来自http://xmlgw.companieshouse.gov.uk/的回复。这是发送给马歇尔的文本：

<NameSearch xmlns="http://xmlgw.companieshouse.gov.uk/v1-0/schema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlgw.companieshouse.gov.uk/v1-0/schema http://xmlgw.companieshouse.gov.uk/v1-0/schema/NameSearch.xsd">
  <ContinuationKey>...</ContinuationKey>
  <RegressionKey>...</RegressionKey>
  <SearchRows>20</SearchRows>
  <CoSearchItem>
    <CompanyName>COMPANY NAME</CompanyName>
    <CompanyNumber>23546457</CompanyNumber>
    <DataSet>LIVE</DataSet>
    <CompanyIndexStatus>DISSOLVED</CompanyIndexStatus>
    <CompanyDate></CompanyDate>
  </CoSearchItem>
  // more CoSearchItem elements
</NameSearch>

CoSearchItem的模型如下：

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "CoSearchItem", propOrder = {
    "companyName",
    "companyNumber",
    "dataSet",
    "companyIndexStatus",
    "companyDate",
    "searchMatch"
})
public class CoSearchItem {

    @XmlElement(name = "CompanyName", required = true)
    protected String companyName;
    @XmlElement(name = "CompanyNumber", required = true)
    protected String companyNumber;
    @XmlElement(name = "DataSet", required = true)
    protected String dataSet;
    @XmlElement(name = "CompanyIndexStatus")
    protected String companyIndexStatus;
    @XmlElement(name = "CompanyDate")
    @XmlSchemaType(name = "date")
    protected XMLGregorianCalendar companyDate;
    @XmlElement(name = "SearchMatch")
    protected String searchMatch;

    // getters and setters

}

NameSearch模型具有以下结构：

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "NameSearch", namespace = "http://xmlgw.companieshouse.gov.uk/v1-0/schema", propOrder = {
    "continuationKey",
    "regressionKey",
    "searchRows",
    "coSearchItem"
})
@XmlRootElement(name = "NameSearch", namespace = "http://xmlgw.companieshouse.gov.uk/v1-0/schema")
public class NameSearch {

    @XmlElement(name = "ContinuationKey", required = true)
    protected String continuationKey;
    @XmlElement(name = "RegressionKey", required = true)
    protected String regressionKey;
    @XmlElement(name = "SearchRows", required = true)
    protected BigInteger searchRows;
    @XmlElement(name = "CoSearchItem")
    protected List<CoSearchItem> coSearchItem;

    // setters and getters

}

该软件包具有以下注释：

@XmlSchema(namespace = "http://xmlgw.companieshouse.gov.uk/v1-0", elementFormDefault = XmlNsForm.QUALIFIED, //
    xmlns = {
        @XmlNs(prefix = "xsi", namespaceURI = "http://www.w3.org/2001/XMLSchema-instance") 
     }
)

package uk.gov.companieshouse;

解组从第一完成Node提取从一个更大的Document，内部any的产品清单。但是，当我们解析xml时，CoSearchItem中的所有字段都设置为null，无法找出原因。

Answer 1

您需要使用包级@XmlSchema注释来指定模型的名称空间限定。

@XmlSchema(
    namespace = "http://xmlgw.companieshouse.gov.uk/v1-0/schema",
    elementFormDefault = XmlNsForm.QUALIFIED)
package example;

import javax.xml.bind.annotation.XmlNsForm;
import javax.xml.bind.annotation.XmlSchema;

使用此选项，您无需在@XmlRootElement和@XmlType上指定名称空间URI NameSearch。

想要查询更多的信息

• http://blog.bdoughan.com/2010/08/jaxb-namespaces.html

从任何项目列表中的较大文档提取的第一个节点开始进行拆组。

确保用于创建节点的DOM解析器可识别名称空间。

documentBuilderFactory.setNamespaceAware(true);