使用JAXb打印输入XML到

Question

如何在使用JAXb解析后将XML文件打印到控制台。XML有一个根级别，然后有一系列不同的表结构。

公共类ExternalImports {

public static void main(String[] args) {

    try {
        // create JAXB context and initializing Marshaller

        JAXBContext jaxbContext = JAXBContext.newInstance(ServiceModel.class);
        Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();

        // specify the location and name of xml file to be read
        File XMLfile = new File(
                "C:\\Users\\Data.xml");

        ServiceModel model = (ServiceModel) jaxbUnmarshaller.unmarshal(XMLfile);
        System.out.println(model);

XML结构(示例代码)

<Service-Model>
<component_t action="str1234">
    <type>12</type>
    <name>str1234</name>
    <attributes>str1234</attributes>
    <component_heirarchy>
        <supplier>str1234</supplier>
    </component_heirarchy>
    </sqm_component_t>
    </Service-Model>

我正试图找到一种方法，一或两行代码，以打印它的所有控制台。否则，写50到60行打印语句是一项乏味的工作。

这就是我在控制台上得到的全部。

com.group.project.serviceModelTools.ServiceModel@77396f71

Answer 1

此方法将任何POJO java类序列化为格式化的xml字符串：

    public String serialize( Object aMessageDto) throws Exception
    {
        JAXBContext jaxbContext = JAXBContext.newInstance( aMessageDto.getClass());
        Marshaller marshaller = jaxbContext.createMarshaller();
        marshaller.setProperty( Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.setProperty( Marshaller.JAXB_NO_NAMESPACE_SCHEMA_LOCATION, SCHEMA_FILE);
        StringWriter sw = new StringWriter();
        marshaller.marshal( aMessageDto, sw);
        return sw.toString();
    }

就这么说吧：

    System.out.println( serialize( myObj));