我无法反序列化作为根元素子目录的列表,我尝试过各种各样的事情。
我的代码:
private static class Cards {
@JacksonXmlElementWrapper(localName = "Cards")
private List<Card> cards;
public List<Card> getCards() {
return new ArrayList<>(cards);
}
}
private static class Card {
@JsonProperty("Name")
private String name;
@JsonProperty("Image")
private String image;
@JsonProperty("CardType")
private String cardType;
private final Map<String, Integer> resources = new HashMap<>();
private boolean duplicateResources = false;
private final List<String> duplicateResourceNames = new ArrayList<>();
@JsonAnySetter
private void addResource(final String name, final Object value) {
if (resources.containsKey(name)) {
duplicateResources = true;
duplicateResourceNames.add(name);
}
resources.put(name, Integer.parseInt(value.toString()));
}
public String getName() {
return name;
}
public String getImage() {
return image;
}
public String getCardType() {
return cardType;
}
@JsonAnyGetter
public Map<String, Integer> getResources() {
if (duplicateResources) {
throw new UncheckedCardLoadingException("Resources " + duplicateResourceNames + " have duplicate entries");
}
return new HashMap<>(resources);
}
}
和
ObjectMapper xmlMapper = new XmlMapper();
Cards cards = xmlMapper.readValue(path.toFile(), Cards.class);
尝试反序列化以下XML时:
<Cards>
<Card>
<Name>test</Name>
<Image></Image>
<CardType>test</CardType>
</Card>
</Cards>
它给出了错误:
com.cardshifter.core.cardloader.CardLoadingException:com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException:无法识别的字段&#34;卡&#34; (类com.cardshifter.core.cardloader.XmlCardLoader $ Cards),未标记为可忽略(一个已知属性:&#34; Cards&#34;]) 在[来源:C:\ Users \ Frank \ Dropbox \ NetbeansProjects \ Cardshifter \ cardshifter-core \ target \ test-classes \ com \ cardshifter \ core \ cardloader \ single-card.xml; line:3,column:9](通过引用链:com.cardshifter.core.cardloader.Cards [&#34; Card&#34;])
答案 0 :(得分:9)
首先,看看这些:
@JacksonXmlElementWrapper(localName = "Cards")
private List<Card> cards;
然后看看错误:
com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "Card" (class com.cardshifter.core.cardloader.XmlCardLoader$Cards)
在您的班级中,&#34; Card&#34; 无处可说。
其次,在解决之后,这就是我如何解决你的整个装载问题:
private static class Cards {
@JacksonXmlElementWrapper(localName = "Card")
@JsonProperty("Card")
private List<Card> card = new ArrayList<>();
@JsonSetter
public void setCard(Card card) {
this.card.add(card);
}
}
setCard
方法只是告诉Jackson,如果遇到这种情况,它应该将其解释为Card
,然后提供将其添加到数组的方法。