Question

我实现了一个Java Web服务（JAX-RS API Jersey实现）。有一个实体：

@XmlRootElement
public class TestPhoto extends Photo {
    public enum Type {
        BEFORE, AFTER, ADDON
    }

    private User author;
    @XmlJavaTypeAdapter(LocalDateTimeAdapter.class)
    private LocalDateTime createdTime;
    private Type type;

    public TestPhoto() {
        super();
    }

    public TestPhoto(Long id, String key, String path, User author, LocalDateTime createdTime, Type type) {
        super(id, key, path);
        this.author = author;
        this.createdTime = createdTime;
        this.type = type;
    }

    public User getAuthor() {
        return author;
    }

    public void setAuthor(User author) {
        this.author = author;
    }

    public LocalDateTime getCreatedTime() {
        return createdTime;
    }

    public void setCreatedTime(LocalDateTime createdTime) {
        this.createdTime = createdTime;
    }

    public Type getType() {
        return type;
    }

    public void setType(Type type) {
        this.type = type;
    }
}

当我尝试检索此类实体的列表时，出现错误：

com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException: 8 counts of IllegalAnnotationExceptions
Class has two properties of the same name "createdTime"
    this problem is related to the following location:
        at public java.time.LocalDateTime com.test.TestPhoto.getCreatedTime()
        at com.test.TestPhoto
        at public java.util.List com.test.TestAccount.getAddonPhotos()
        at com.test.TestAccount
    this problem is related to the following location:
        at private java.time.LocalDateTime com.test.TestPhoto.createdTime
        at com.test.TestPhoto
        at public java.util.List com.test.TestAccount.getAddonPhotos()
        at com.test.TestAccount

我知道如何解决这个问题。例如，我可以重命名私有字段并添加_作为前缀。或者我可以在字段中添加@XmlAccessorType(XmlAccessType.FIELD)注释。我也看到，@XmlJavaTypeAdapter(LocalDateTimeAdapter.class)注释有问题。如果评论出来一切正常。但是这部分功能在这种情况下不会起作用。

我想要了解的是为什么这首先发生了。代码工作得非常好，然后停止并开始抛出这些异常。这段代码应该首先起作用吗？还是完全错了？

Class有两个同名的属性。为什么会这样？

0 个答案: