使用JAXB格式化XML [英] Formatting XML with JAXB

问题描述

我一直试图找到一个类似的回答问题，但我没有运气。

I've been trying to find a similar answered question but I haven't had any luck.

我基本上需要从文本文件中读取一些数据然后将其编组为XML。正常格式化，创建

I basically need to read some data off a text file and then marshal it to XML. Normal formatting though, creates

<title></title> 

字段等，而我想要的是每个字段都有这种格式：

fields etc. while what I want is every field to have this format:

<field name="title"></field>.

title这里只是一个占位符，我想要的是name属性有变量它所绑定的名称，所以

"title" here is just a placeholder, what I want is for the name attribute to have the variable name which it is bound, so

<title> 

变为

<field name="title">

，

<author> 

变为

<field name="author"> etc.

我猜这与我没有得到的注释有关。

I'm guessing it has something to do with the annotations that I'm not getting.

我的文档类结构简单，比如

My document class has a simple structure, like

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class Document
{
    private Integer id;
    private String content;
    private String title;
    private String author;
    private String b;
}

推荐答案

每个XML元素（不属性） ）在JAXB中是一个Java类。
并且属性可以是属性。
所以你必须有类似的东西：

Each XML element (not attribute) in JAXB is a Java class. And attribute can be a property. So you have to have something like:

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class Document
{
   @XmlElement(name = "field")
   private List<Field> field = new ArrayList<>();
}

和

@XmlType()
public class Field
{
   @XmlAttribute(name="name", required="true")
   private String name;

   @XmlValue
   private Object value;

}

实际上 私有对象值; 转换为 XML anyType ，这样您就可以将其设置为 Integer for id ， String for content 等

Actually private Object value; translates to XML anyType so you will be able to set it to Integer for id, String for content etc.

将您当前的文档类封送到XML格式为

BTW your current Document class marshalls to XML as

<Document>
      <id></id>
      <content></content>
      <title></title>
      <author></author>
      <b></b>
<Document>

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