REST:将通过POST传递的XML内容转换为Java对象,该元素内部的属性 [英] REST: convert XML content passed with POST to a java object, attribute inside the element
问题描述
我正在使用REST服务,我想通过POST请求传递XML文本.我的服务器是用JAVA实现的.假设我正在发送此XML:
I am working with REST services and i want to pass an XML-text with a POST request. My server is implemented in JAVA. Let's say that i am sending this XML:
<range>
<higher value="3"></higher>
<lower value="2"></lower>
</range>
据我了解(如果我做错了,请纠正我),将请求中的XML转换为Java对象的最简单方法是定义带有适当注释的类.例如:
As i understand (correct me if i am wrong), the easiest way to convert the XML in the request to a java object, is to define a class with the proper annotations. For example:
@XmlRootElement(name = "range")
public class RangeClass {
@XmlElement (name = "lower")
private int lower;
@XmlElement (name = "higher")
private int higher;
.
.
???
}
然后像这样阅读它:
And then read it like this:
@POST
@PATH(<somePath>)
@Consumes(MediaType.APPLICATION_XML)
@Produces(MediaType.TEXT_PLAIN)
public String myFun(RangeClass range) {
.
.
.
}
我所缺少的(如果其他部分正确的话)是如何定义我在元素内部具有属性.如果我添加"@XmlAttribute"注释,则该注释将引用根元素的属性(范围"),而不是特定元素的属性(较低"或较高").
The thing that i am missing (if the other parts are correct) is how to define that i have attributes inside the elements. If i put an '@XmlAttribute' annotation this will refer to an attribute of the root element ('range') and not an attribute of a specific element ('lower' or 'higher').
推荐答案
首先,最简单的方法是为每个XML标签创建一个Java映射:
First and the easiest way is to create a Java mapping per each XML tag:
@XmlRootElement(name = "range")
public class RangeClass {
private Higher higher;
private Lower lower;
}
@XmlElement(name = "higher")
public class Higher {
@XmlAttribute
private int value;
}
@XmlElement(name = "lower")
public class Lower {
@XmlAttribute
private int value;
}
第二选项是将XML结构更改为:
Second option is to change XML structure to:
<range>
<higher>3</higher>
<lower>2</lower>
</range>
然后您可以使用 @XmlElement 批注:
@XmlRootElement(name = "range")
@XmlAccessorType(XmlAccessType.FIELD)
public class RangeClass {
@XmlElement
private int lower;
@XmlElement
private int higher;
}
第三选项是使用 Eclipse链接Moxy 和其@XmlPath批注:
Third option is to use Eclipse Link Moxy and its @XmlPath annotation:
@XmlRootElement(name = "range")
@XmlAccessorType(XmlAccessType.FIELD)
public class RangeClass {
@XmlPath("lower/@value")
private int lower;
@XmlPath("higher/@value")
private int higher;
}
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