我想知道是否有使用SIMPLE XML Library for Android将col_1,col_2等作为列表而不是单独的元素处理。我一直在阅读有关替换的内容,但我仍然感到困惑。
当前格式:
<box-headers
dataTable="boxscore"
col_1="FINAL"
col_2="1"
col_3="2"
col_4="3"
col_5="4"
col_6="5"
col_7="6"
col_8="7"
col_9="8"
col_10="9"
col_11="R"
col_12="H"
col_13="E">
table
</box-headers>
我希望能够将col作为某种列表解析出来,这样我就可以处理任意数量的cols。这可能吗?
答案 0 :(得分:2)
正如 ng 之前所述:为此使用Converter
。简单就是让您自定义处理的每一步(另一方面,它可以让您(甚至)使用一些代码行(甚至)复杂的结构序列化。)
所以这是一个例子:
将保留列表中值的类:
@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
}
}
使用方法:
// 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,其他所有内容都将被删除。如果您也需要这些值,则很容易实现它们。您只需从InputNode
检索它们并将它们设置为输出。