JAXB Marshall不輸出XML

Question

我正在嘗試創建一個簡單的JAXB程序並將該對象寫到xml文件中，但是它沒有創建任何輸出-我正在粘貼示例代碼和輸出-

代碼-

 ObjectFactory fct = new ObjectFactory();
        ImportParams imp = fct.createImportParams();
        FolderMaps fmaps = fct.createFolderMaps();

        FolderMap fmap = fct.createFolderMap();
        imp.setFolderMaps(fmaps);
        fmap.setSourceFolderPath("test");
        fmaps.getFolderMap().add(fmap);
        System.out.println("Size is " + fmaps.getFolderMap().size());
        System.out.println("Path is " + fmap.getSourceFolderPath());


        ImportParams imp1 = new ImportParams();
        imp1.setFolderMaps(fmaps);

JAXBContext ctx = null;
System.out.println("Writing JAXB objects");
try {
    ctx = JAXBContext.newInstance("com.au");
    System.out.println("Inside JAXB");
    Marshaller marshaller = ctx.createMarshaller();
    System.out.println("Marshal Started");
    marshaller.marshal(fmaps, System.out);
    marshaller.marshal(imp, System.out);
    marshaller.marshal(fmap, System.out);
    System.out.println("Marshal Completed");
    marshaller.marshal(fmaps, new File ("C:\\Users\\test\\Desktop\\eclipse_workspace_64\\abcjaxb.xml"));
} catch (Exception e) {
    // TODO: handle exception
}

輸出是

Size is 1
Path is test
Writing JAXB objects
Inside JAXB
Marshal Started
Parameter file successfully created

元帥啟動后終止，並且不創建xml文件

Answer 1

您需要將@XmlRootElement添加到com.au.FolderMap類，例如

 package com.au;
 @XmlRootElement
 public class FolderMap {
      // ...
 )