Jaxb - 我如何将一个 xml 元素解组到多个字段？

Question

xml:

<root> <element>value (something)</element> </root>

I need to unmarshall this xml to two different fields in my java class.

I tried the following but it didn't work. the first field had the right value and the second one was null.

java:

@XmlElement(name="element")
@XmlJavaTypeAdapter(TakeValueBeforeParentheses.class)
private String one;

@XmlElement(name="element")
@XmlJavaTypeAdapter(TakeValueInParentheses.class)
private String two;

How can I achieve this without creating a class to hold both values and map that to "element"?

Answer 1

You may annotate setters and not fields, and then make setter parse value to two fields:

@XmlElement(name="element") 
void setElement(String value) {
    // parse value
    StringTokenizer st = new StringTokenizer(value, "()");
    this.one = st.nextToken().trim();
    this.two = st.nextToken().trim();
}

Answer 2

i think it's a bad practice, because the unmarchalling system play with markers separators only. You can split the line after unmarchalling the xml.

Why not use this xml format:

<root><elements><element>value</element><element>something</element></elements></root>