正如ngConverter
之前所说:为此使用 a 。Simple 在让您自定义处理的每个步骤方面非常出色(另一方面,您可以使用一些代码行(反)序列化甚至复杂的结构)。
所以这里有一个例子:
将保存列表中的值的类:
@Root(name = "example")
@Convert(value = ListConverter.class) // Specify the Converter that's used for this class
public class Example
{
// This element will be set with the values from 'box-headers' element
@ElementList(name = "box-headers")
private List<String> values;
// This constructor is used to set the values while de-serializing
// You can also use setters instead
Example(List<String> values)
{
this.values = values;
}
//...
}
Converter
: _
public class ExampleConverter implements Converter<Example>
{
@Override
public Example read(InputNode node) throws Exception
{
List<String> list = new ArrayList<>(); // List to insert the 'col_' values
NodeMap<InputNode> attributes = node.getAttributes(); // All attributes of the node
Iterator<String> itr = attributes.iterator();
while( itr.hasNext() ) // Iterate over all attributes
{
final String name = itr.next(); // The name of the attribute
if( name.startsWith("col_") ) // Check if it is a 'col' attribute
{
// Insert the value of the 'col_' attribute
list.add(attributes.get(name).getValue());
}
}
// Return the result - instead of a constructor you can use setter(s) too
return new Example(list);
}
@Override
public void write(OutputNode node, Example value) throws Exception
{
// TODO: Implement serializing here - only required if you want to serialize too
}
}
如何使用:
// Serializer, don't forget `AnnotationStrategy` - without it wont work
Serializer ser = new Persister(new AnnotationStrategy());
// Deserialize the object - here the XML is readen from a file, other sources are possible
Example ex = ser.read(Example.class, new File("test.xml"));
此示例仅使用col_xy
属性,其他所有内容都被删除。如果您也需要这些值,则很容易实现它们。您只需从 中检索它们并将InputNode
它们设置到您的输出中。