使用 ZAB6632D55A4B3743FA21DAF85F26 将具有单个变量的 Java Object 转换为 XML

Question

Let's say I have class Foo

@XmlRootElement(name="foo")
public class Foo {
    @XmlElement(name = "id")
    private Bar variable;
    @XmlElement
    private String name;
}

and class Bar

public class Bar {
    @XmlElement
    private String id;
}

and I want to get an XML file like

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<foo>
    <id>bar</id>
    <name>foo</name>
</foo>

but instead I get when I run the marshal

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<foo>
    <id>    
        <id>bar</id>
    </id>
    <name>foo</name>
</foo>

I can't use getters or setters due to having to follow strict encapsulation rules and I can't simply delete the Bar class because the Bar clase holds important business logic in it's constructor.

I know I can use a private getter to do that but it seems like a weird hack and I was wondering if there is a cleaner solution using tags.

I have tried to look into how Jaxb converts String objects to a simple XML string element without success, but I think it was probably hardcoded.

Answer 1

Thanks to the previous answer here I managed to find a way to do this.

Class foo doesn't change, it stays as intended

Class bar however, stops using @XmlElement and starts using @XmlValue , so it would look like this:

public class Bar {
    @XmlValue
    private String id;
}