Question

我在版本0.12.3中使用org.jvnet.jaxb2.maven2:maven-jaxb2-plugin，我有以下问题。

我从xsd文件生成一个java文件。
我提交并将其推送到我们的git存储库。
我再次启动同一代（我们使用removeOldOutput选项）。
对于某些文件，git检测到一些更改，因为某些注释的顺序在2代之间不一样。

第一代的一部分：

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "Software", propOrder = {
    "rest"
})
public abstract class Software
    extends SoftwareResource
    implements Serializable
{

    private final static long serialVersionUID = 1L;
    @XmlElementRefs({
        @XmlElementRef(name = "resource", type = JAXBElement.class),
        @XmlElementRef(name = "software", type = JAXBElement.class),
        @XmlElementRef(name = "swapSpaceUsedCurrent", type = JAXBElement.class),
        @XmlElementRef(name = "isUTCTime", type = JAXBElement.class),
        @XmlElementRef(name = "lastStartTime", type = JAXBElement.class),
        @XmlElementRef(name = "serialNumber", type = JAXBElement.class),
        @XmlElementRef(name = "numberProcessesActiveCurrent", type = JAXBElement.class),
        @XmlElementRef(name = "pagingFileSizeCurrent", type = JAXBElement.class),
        @XmlElementRef(name = "processMemorySizeCurrent", type = JAXBElement.class),
        @XmlElementRef(name = "numUsersCurrent", type = JAXBElement.class)
    })
    protected List<JAXBElement<? extends Serializable>> rest;

    /**
     * Objects of the following type(s) are allowed in the list
     * {@link JAXBElement }{@code <}{@link Resource }{@code >}
     * {@link JAXBElement }{@code <}{@link BigInteger }{@code >}
     * {@link JAXBElement }{@code <}{@link Software }{@code >}
     * {@link JAXBElement }{@code <}{@link Boolean }{@code >}
     * {@link JAXBElement }{@code <}{@link String }{@code >}
     * {@link JAXBElement }{@code <}{@link BigInteger }{@code >}
     * {@link JAXBElement }{@code <}{@link String }{@code >}
     * {@link JAXBElement }{@code <}{@link Quantity }{@code >}
     * {@link JAXBElement }{@code <}{@link BigInteger }{@code >}
     * {@link JAXBElement }{@code <}{@link Quantity }{@code >}
     * 
     * 
     */
    public List<JAXBElement<? extends Serializable>> getRest() {
        if (rest == null) {
            rest = new ArrayList<JAXBElement<? extends Serializable>>();
        }
        return this.rest;
    }

}

第二代的同一部分：

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "Software", propOrder = {
    "rest"
})
public abstract class Software
    extends SoftwareResource
    implements Serializable
{

    private final static long serialVersionUID = 1L;
    @XmlElementRefs({
        @XmlElementRef(name = "numUsersCurrent", type = JAXBElement.class),
        @XmlElementRef(name = "serialNumber", type = JAXBElement.class),
        @XmlElementRef(name = "processMemorySizeCurrent", type = JAXBElement.class),
        @XmlElementRef(name = "swapSpaceUsedCurrent", type = JAXBElement.class),
        @XmlElementRef(name = "pagingFileSizeCurrent", type = JAXBElement.class),
        @XmlElementRef(name = "lastStartTime", type = JAXBElement.class),
        @XmlElementRef(name = "numberProcessesActiveCurrent", type = JAXBElement.class),
        @XmlElementRef(name = "resource", type = JAXBElement.class),
        @XmlElementRef(name = "isUTCTime", type = JAXBElement.class),
        @XmlElementRef(name = "software", type = JAXBElement.class)
    })
    protected List<JAXBElement<? extends Serializable>> rest;

    /**
     * Objects of the following type(s) are allowed in the list
     * {@link JAXBElement }{@code <}{@link BigInteger }{@code >}
     * {@link JAXBElement }{@code <}{@link String }{@code >}
     * {@link JAXBElement }{@code <}{@link Quantity }{@code >}
     * {@link JAXBElement }{@code <}{@link String }{@code >}
     * {@link JAXBElement }{@code <}{@link Quantity }{@code >}
     * {@link JAXBElement }{@code <}{@link BigInteger }{@code >}
     * {@link JAXBElement }{@code <}{@link BigInteger }{@code >}
     * {@link JAXBElement }{@code <}{@link Boolean }{@code >}
     * {@link JAXBElement }{@code <}{@link Resource }{@code >}
     * {@link JAXBElement }{@code <}{@link Software }{@code >}
     * 
     * 
     */
    public List<JAXBElement<? extends Serializable>> getRest() {
        if (rest == null) {
            rest = new ArrayList<JAXBElement<? extends Serializable>>();
        }
        return this.rest;
    }

}

为什么这两个注释在两代之间的排序方式不同？有没有办法订购它们？

谢谢！

Answer 1

此处maven-jaxb2-plugin的作者。

首先，Aleksandr M是完全正确的。生成的代码通常不会检入SCM。整个target目录与git无关。

接下来，由maven-jaxb2-plugin调用的JAXB模式编译器（XJC）不是确定性的，因此不保证生成的源代码在不同代码生成之间是相同的。这绝对不是maven-jaxb2-plugin中的问题，我也不会将其称为XJC中的错误。只是降低您的期望，不要期望在运行之间使用相同的代码。

org.jvnet.jaxb2.maven2：maven-jaxb2-plugin：相同的文件，倍数结果

1 个答案: