java - 序列化 Java 对象

Question

让我知道序列化我的 Java 对象下载的最佳方法。这是通过 WSDL 的 java wsimport 工具生成的类。

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "Download", propOrder = {
    "Response",
    "VendorInformation",
    "DownloadItem",
    "DownloadCommentItem",
    "DownloadIntercomItem"
})

public class Download 
{

    @XmlElement(name = "Response")
    protected ResponseMessageManagementType Response;
    @XmlElement(name = "VendorInformation")
    protected DownloadVendorInformation VendorInformation;
    @XmlElement(name = "DownloadItem")
    protected List<DownloadDownloadItem> DownloadItem;
    @XmlElement(name = "DownloadCommentItem")
    protected ArrayOfDownloadDldComment DownloadCommentItem;
    @XmlElement(name = "DownloadIntercomItem")
    protected ArrayOfDownloadDldIntercom DownloadIntercomItem;

    .........................
}

从该工具生成的 java 类没有任何序列化实现。 我想按照这种格式序列化 Download 类:

<?xml version="1.0" encoding="utf-8"?>
<Download xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
  xmlns="HTTP://xyz.abc.Com//Vendor/DownloadWSE.xsd">
  <Response>
   .....
  </Response>

  <VendorInformation>
   ...............
  </VendorInformation>

  <DownloadItem>
    <DownloadDownloadItem>
       .......
    </DownloadDownloadItem>
    <DownloadDownloadItem>
       .......
    </DownloadDownloadItem>
    <DownloadDownloadItem>
       .......
    </DownloadDownloadItem>
  </DownloadItem>
  <DownloadCommentItem>
    ........
  </DownloadCommentItem>
  <DownloadIntercomItem>
    ........
  </DownloadIntercomItem>
</Download>

您可以看到 XmlElementName 和 XML 字符串内容之间的映射。 我不知道如何做到这一点。

谢谢

Answer 1

这是JAXB 。您需要:

JAXBContext ctx = JAXBConetxt.newInstance(Download.class);
Marshaller m = ctx.createMarshaller();
m.marshal(downloadObject, out);

其中 out 可以是很多东西，包括 OutputStream、Writer 和 File。如果您想将其作为 String 获取，请使用 StringWriter