杰克逊反序列化到子元素列表 [英] Jackson deserialize to list of child elements
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问题描述
我有一个看起来像这样的xml
I have an xml that looks like this
<Trade>
<row>
<TradeID>1</TradeID>
</row>
<row>
<TradeID>2</TradeID>
</row>
</Trade>
我想将此反序列化为对象列表.现在我知道我可以做到
And I'd like to deserialize this into a list of objects. Now I know I could do
public class Trade{
List<Row> rows;
public class Row{
int tradeID;
}
}
但是理想情况下,我想避免完全基于outter标签创建一个类,因为它毫无价值.有什么办法可以将这个xml直接反序列化为List<Row>?
But ideally I'd like to avoid creating a class based on the outter tag entirely because it's worthless. Is there any way I could deserialize this xml directly to a List<Row>?
推荐答案
If you'd like to deserialize into List<Row>
directly , you can just specify the desired valueType in xmlMapper#readValue
String xml =
"<Trade>\r\n"
+ " <row>\r\n"
+ " <TradeID>1</TradeID>\r\n"
+ " </row>\r\n"
+ " <row>\r\n"
+ " <TradeID>2</TradeID>\r\n"
+ " </row>\r\n"
+ "</Trade>\r\n"
+ "";
XmlMapper xmlMapper = new XmlMapper();
List<Row> rows = Arrays.asList(xmlMapper.readValue(xml, Row[].class));
System.out.println(rows);
打印:
[Row [tradeId=1], Row [tradeId=2]]
和Row类:
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
@JacksonXmlRootElement(localName = "row")
public class Row {
@JacksonXmlProperty(localName = "TradeID")
private int tradeId;
public int getTradeId() {
return tradeId;
}
public void setTradeId(int tradeId) {
this.tradeId = tradeId;
}
@Override
public String toString() {
return "Row [tradeId=" + tradeId + "]";
}
}
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