你可以在这个网站上找到很多这样的问题，但没有一个能解决我的问题。
这是我的 XML:
<?xml version='1.0' encoding='UTF-8' standalone='yes'?>
<lookupInstances xmlns='http://www.pqr.com/awd/rest/v1' name='LKIMGR'>
<lookupParameters>
<lookupParameter name='businessArea'>PQAA</lookupParameter>
<lookupParameter name='MEMBERNUMBER'>ANTHONY1900</lookupParameter>
</lookupParameters>
</lookupInstances>
我使用 XJC 编译器创建了 Jaxb 类，创建的文件如下:
//
// This file was generated by the JavaTM Architecture for XML Binding(JAXB) Reference Implementation, vJAXB 2.1.10 in JDK 6
// See <a href="http://java.sun.com/xml/jaxb">http://java.sun.com/xml/jaxb</a>
// Any modifications to this file will be lost upon recompilation of the source schema.
// Generated on: 2015.01.13 at 12:15:41 PM IST
//
package com.dsths.ga.awd.main;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
/**
* <p>Java class for anonymous complex type.
*
* <p>The following schema fragment specifies the expected content contained within this class.
*
* <pre>
* <complexType>
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="lookupParameters">
* <complexType>
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="lookupParameter">
* <complexType>
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <attribute name="name" type="{http://www.w3.org/2001/XMLSchema}string" />
* </restriction>
* </complexContent>
* </complexType>
* </element>
* </sequence>
* </restriction>
* </complexContent>
* </complexType>
* </element>
* </sequence>
* <attribute name="name" type="{http://www.w3.org/2001/XMLSchema}string" />
* </restriction>
* </complexContent>
* </complexType>
* </pre>
*
*
*/
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
"lookupParameters"
})
@XmlRootElement(name = "lookupInstances")
public class LookupInstances {
@XmlElement(required = true)
protected LookupInstances.LookupParameters lookupParameters;
@XmlAttribute
protected String name;
/**
* Gets the value of the lookupParameters property.
*
* @return
* possible object is
* {@link LookupInstances.LookupParameters }
*
*/
public LookupInstances.LookupParameters getLookupParameters() {
return lookupParameters;
}
/**
* Sets the value of the lookupParameters property.
*
* @param value
* allowed object is
* {@link LookupInstances.LookupParameters }
*
*/
public void setLookupParameters(LookupInstances.LookupParameters value) {
this.lookupParameters = value;
}
/**
* Gets the value of the name property.
*
* @return
* possible object is
* {@link String }
*
*/
public String getName() {
return name;
}
/**
* Sets the value of the name property.
*
* @param value
* allowed object is
* {@link String }
*
*/
public void setName(String value) {
this.name = value;
}
/**
* <p>Java class for anonymous complex type.
*
* <p>The following schema fragment specifies the expected content contained within this class.
*
* <pre>
* <complexType>
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="lookupParameter">
* <complexType>
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <attribute name="name" type="{http://www.w3.org/2001/XMLSchema}string" />
* </restriction>
* </complexContent>
* </complexType>
* </element>
* </sequence>
* </restriction>
* </complexContent>
* </complexType>
* </pre>
*
*
*/
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
"lookupParameter"
})
public static class LookupParameters {
@XmlElement(required = true)
protected LookupInstances.LookupParameters.LookupParameter lookupParameter;
/**
* Gets the value of the lookupParameter property.
*
* @return
* possible object is
* {@link LookupInstances.LookupParameters.LookupParameter }
*
*/
public LookupInstances.LookupParameters.LookupParameter getLookupParameter() {
return lookupParameter;
}
/**
* Sets the value of the lookupParameter property.
*
* @param value
* allowed object is
* {@link LookupInstances.LookupParameters.LookupParameter }
*
*/
public void setLookupParameter(LookupInstances.LookupParameters.LookupParameter value) {
this.lookupParameter = value;
}
/**
* <p>Java class for anonymous complex type.
*
* <p>The following schema fragment specifies the expected content contained within this class.
*
* <pre>
* <complexType>
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <attribute name="name" type="{http://www.w3.org/2001/XMLSchema}string" />
* </restriction>
* </complexContent>
* </complexType>
* </pre>
*
*
*/
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "")
public static class LookupParameter {
@XmlAttribute
protected String name;
/**
* Gets the value of the name property.
*
* @return
* possible object is
* {@link String }
*
*/
public String getName() {
return name;
}
/**
* Sets the value of the name property.
*
* @param value
* allowed object is
* {@link String }
*
*/
public void setName(String value) {
this.name = value;
}
}
}
}
解码代码:
public LookupInstances unmarshallXmlRequest(String xmlReq)
{
LookupInstances instances = null;
try {
JAXBContext jc = JAXBContext.newInstance( LookupInstances.class );
Unmarshaller u = jc.createUnmarshaller();
StringBuffer xmlStr = new StringBuffer( xmlReq );
StringReader strReader = new StringReader( xmlStr.toString() );
StreamSource strSource = new StreamSource(strReader);
Object o = u.unmarshal( strSource );
instances = (LookupInstances)o;
} catch (JAXBException e) {
e.printStackTrace();
}
return instances;
}
我收到了这个错误:
javax.xml.bind.UnmarshalException: unexpected element (uri:"http://www.pqr.com/awd/rest/v1", local:"lookupInstances"). Expected elements are <{}lookupInstances>
请帮忙。
最佳答案
以下是一些应该有所帮助的信息:
XML
以下是您的 XML 的一部分。需要注意的一点是 xmlns 属性。这是一个特殊属性，指的是 XML 文档中的命名空间限定。
<lookupInstances xmlns='http://www.pqr.com/awd/rest/v1' name='LKIMGR'>
<lookupParameters/>
</lookupInstances>
以下是具有相同命名空间限定的 XML 的另一个版本:
<abc:lookupInstances xmlns:abc='http://www.pqr.com/awd/rest/v1' name='LKIMGR'>
<abc:lookupParameters/>
</abc:lookupInstances>
当您删除 xmlns 属性时， namespace 限定被删除。下面的文档不等同于上面的两个。
<lookupInstances name='LKIMGR'>
<lookupParameters/>
</lookupInstances>
您的错误
javax.xml.bind.UnmarshalException: unexpected element (uri:"http://www.pqr.com/awd/rest/v1", local:"lookupInstances"). Expected elements are <{}lookupInstances>
此错误表明您没有正确映射命名空间限定。
在 JAXB 中映射命名空间限定
JAXB 中的命名空间限定是使用包级别的 @XmlSchema 注释完成的。包级别的注释放在 package-info.java 中。下面是这个类的完整源代码。如果您已经有一个 package-info.java 源文件，请确保它正在与您的其余类一起编译和打包。
@XmlSchema(
namespace = "http://www.pqr.com/awd/rest/v1",
elementFormDefault = XmlNsForm.QUALIFIED)
package your_package;
import javax.xml.bind.annotation.XmlNsForm;
import javax.xml.bind.annotation.XmlSchema;
XML 架构
如果您从 XML Schema 生成模型，请确保在此处正确定义此命名空间限定。它看起来像:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.pqr.com/awd/rest/v1"
xmlns="http://www.pqr.com/awd/rest/v1"
elementFormDefault="qualified">
</xs:schema>
关于javax.xml.bind.UnmarshalException : unexpected element (uri :"", 本地 :"")。预期的元素是，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/27919323/