使用Jettison的多维数组

时间:2018-10-17 00:36:46

标签: java arrays json jaxb jettison

我正在使用Jaxb和Jettison(最初是Resteasy)将对象序列化为json。我要序列化的对象之一包括一个二维数组。如何配置Jettison以在json中生成多维数组?

下面是生成多维数组的示例:

public class Example {
    @XmlRootElement("test")
    @XmlAccessorType(XmlAccessType.FIELD)
    public static class Tester {

        int[][] stuff;
    }

    public static void main(String[] args) throws JAXBException {
        Tester tester = new Tester();

        tester.stuff = new int[][]{{1, 2}, {3, 4}};

        StringWriter writer = new StringWriter();

        Configuration config = new Configuration();
        MappedNamespaceConvention con = new MappedNamespaceConvention(config);
        MappedXMLStreamWriter xmlStreamWriter = new MappedXMLStreamWriter(con, writer);

        Marshaller marshaller = JAXBContext.newInstance(Tester.class)
                .createMarshaller();

        marshaller.marshal(tester, xmlStreamWriter);

        System.out.println(writer.toString());
    }
}

输出以下内容:

{"tester":{"stuff":[{"item":[1,2]},{"item":[3,4]}]}}

但是,我想将stuff数组输出为多维json数组,如下所示:

{"tester":{"stuff":[[1,2],[3,4]]}}

这似乎是可能的,因为Resteasy可以立即使用这种方式进行序列化。

1 个答案:

答案 0 :(得分:0)

在对Resteasy进行深入研究后,发现在Jboss中使用默认json提供程序时会使用Jackson。作为参考,此代码提供了所需的结果:

public class Example {
    @XmlRootElement("test")
    @XmlAccessorType(XmlAccessType.FIELD)
    public static class Tester {

        int[][] stuff;
    }

    public static void main(String[] args) throws JAXBException {
        Tester tester = new Tester();

        tester.stuff = new int[][]{{1, 2}, {3, 4}};

        StringWriter writer = new StringWriter();

        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.registerModule(new JaxbAnnotationModule());

        System.out.println(objectMapper.writeValueAsString(tester));
    }
}