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错误消息说明了一切：

com.easytobook.Roomtype#totalTaxesAndFees在@javax.xml.bind.annotation.xmldattribute和@javax.xml.bind.annotation.xmlement

您的代码有：

@XmlRootElement(name = "Roomtype")
@XmlAccessorType(XmlAccessType.FIELD)
public class Roomtype {
    . . .
    @XmlAttribute(name="EUR")
    @XmlElement(name = "TotalTaxesAndFees")
    private double totalTaxesAndFees;

这是不允许的

---

您的问题在于这些XML元素：

<Roomtype>
    <Roomid parentid="2069840686">2069840686</Roomid>
    . . .
    <Totalrate currency="AUD" EUR="1204.3398">1800</Totalrate>
    <TotalTaxesAndFees currency="AUD" EUR="0">0</TotalTaxesAndFees>
    <TotalChargeable currency="AUD" EUR="1204.3398">1800</TotalChargeable>
    <Reckratetotal currency="AUD" EUR="1204.3398">1800</Reckratetotal>

相反，为了在

元素上有一个属性，您需要一个

Roomid

类（并且您不需要

@XmlRootElement

）：

总共4个元素具有相同的结构，因此它们可以共享一个类：

@XmlAccessorType(XmlAccessType.FIELD)
public class Total {
    @XmlAttribute(name = "currency")
    private String currency;
    @XmlAttribute(name = "EUR")
    private double eur;
    @XmlValue
    private double total;
}

这两个类的使用方式如下：

@XmlAccessorType(XmlAccessType.FIELD)
public class Roomtype {
    @XmlElement(name = "Roomid")
    private Roomid roomid;
    . . .
    @XmlElement(name = "Totalrate")
    private Total totalrate;
    @XmlElement(name = "TotalTaxesAndFees")
    private Total totalTaxesAndFees;
    @XmlElement(name = "TotalChargeable")
    private Total totalChargeable;
    @XmlElement(name = "Reckratetotal")
    private Total reckratetotal;

<Roomtype>
    <Roomid parentid="2069840686">2069840686</Roomid>
    . . .
    <Totalrate currency="AUD" EUR="1204.3398">1800</Totalrate>
    <TotalTaxesAndFees currency="AUD" EUR="0">0</TotalTaxesAndFees>
    <TotalChargeable currency="AUD" EUR="1204.3398">1800</TotalChargeable>
    <Reckratetotal currency="AUD" EUR="1204.3398">1800</Reckratetotal>

public class Roomtype {
    @XmlAttribute(name = "parentid")
    private String parentid;

@XmlAccessorType(XmlAccessType.FIELD)
public class Roomid {
    @XmlAttribute(name = "parentid")
    private String parentid;
    @XmlValue
    private long roomId;
}

@XmlAccessorType(XmlAccessType.FIELD)
public class Total {
    @XmlAttribute(name = "currency")
    private String currency;
    @XmlAttribute(name = "EUR")
    private double eur;
    @XmlValue
    private double total;
}

@XmlAccessorType(XmlAccessType.FIELD)
public class Roomtype {
    @XmlElement(name = "Roomid")
    private Roomid roomid;
    . . .
    @XmlElement(name = "Totalrate")
    private Total totalrate;
    @XmlElement(name = "TotalTaxesAndFees")
    private Total totalTaxesAndFees;
    @XmlElement(name = "TotalChargeable")
    private Total totalChargeable;
    @XmlElement(name = "Reckratetotal")
    private Total reckratetotal;