将java对象编组为不同格式的XML？答案

【问题标题】：Marshalling java object to XML in different format?将java对象编组为不同格式的XML？
【发布时间】：2014-04-08 18:22:11
【问题描述】：

我有下面的xml

<note>
<to>Tony</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>

我已经从中构造了 Note.java（数据对象），我在上面做了一些验证

现在我想从 Note.java 构建以下格式的 XML。

我能想到的一种方法是创建 MyCustomNote.java（另一个数据对象）。将 note.java 的字段映射到 MyCustomNote.java。然后使用 xstream 或 jaxb 等工具构建以下格式的 xml。但我不确定它是正确的还是有更好的方法？

<MyCustomNote>
<toAddress>Tony</toAddress>
<fromName>Jani</fromName>
<heading>Reminder</heading>
<output>someOutput</output>
</MyCustomNote>

更新：-

Note.java 是

public Class Note {

private String to;
private String from;
private String heading;
private String body;

//getters and setters for each the above field

}

【问题讨论】：

以下内容可能会有所帮助：blog.bdoughan.com/2011/09/…

标签： java xml jaxb xstream

【解决方案1】：

所以使用 xstream 会很简单：

final XStream xstream = new XStream(new StaxDriver());
xstream.alias("MyCustomNote", Note.class);
xstream.aliasField("toAddress", Note.class,"to");
xstream.aliasField("fromName", Note.class,"from");
xstream.aliasField("heading", Note.class,"heading");
xstream.aliasField("output", Note.class,"body");

这将在 main() 中，在 Note.java 中，您必须在 getMethods() 上设置 @Field。也很高兴发布您的 Note.java

更新：

ExportToXml.class

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.PrettyPrintWriter;
import com.thoughtworks.xstream.io.xml.StaxDriver;

public class ExportToXml {

public Note createNote() {

    Note container = new Note();
    container.setBody("Don't forget me this weekend!");
    container.setFrom("Jeni");
    container.setHeading("Reminder");
    container.setTo("Tony");

    return container;
}

public static void main(String[] args){

    final XStream xstream = new XStream(new StaxDriver());
    xstream.alias("MyCustomNote", Note.class);
    xstream.aliasField("toAddress", Note.class,"to");
    xstream.aliasField("fromName", Note.class,"from");
    xstream.aliasField("heading", Note.class,"heading");
    xstream.aliasField("output", Note.class,"body");

    ExportToXml export = new ExportToXml();

    Note firstNote = export.createNote();

    final File file = new File("D:\\export.xml");
    BufferedOutputStream stdout;
    try {

        stdout = new BufferedOutputStream(new FileOutputStream(file));
    } catch (final FileNotFoundException e) {
        throw new RuntimeException(e);
    }
    xstream.marshal(firstNote, new PrettyPrintWriter(
            new OutputStreamWriter(stdout)));

}

}

Note.class

 public class Note {

private String to;
private String from;
private String heading;
private String body;

public String getTo() {
    return to;
}

public void setTo(String to) {
    this.to = to;
}

public String getFrom() {
    return from;
}

public void setFrom(String from) {
    this.from = from;
}

public String getHeading() {
    return heading;
}

public void setHeading(String heading) {
    this.heading = heading;
}

public String getBody() {
    return body;
}

public void setBody(String body) {
    this.body = body;
}

结果将是 export.xml

  <MyCustomNote>
    <toAddress>Tony</toAddress>
    <fromName>Jeni</fromName>
    <heading>Reminder</heading>
    <output>Don't forget me this weekend!</output>
  </MyCustomNote>

【讨论】：

@Iulian Alexandru Costeiu。在我的更新部分下发布了 Note.java。我不确定“在 Note.java 中你必须在 getMethods() 上设置 @Field”是什么意思。能举个小例子吗？
尝试不使用@Field 注释，它应该可以运行