我正在搜索一个轻量级API(最好是单个类)来转换
Map<String,String> map = new HashMap<String,String();
到xml，反之亦然，将XML转换回Map。
例：
Map<String,String();
map.put("name","chris");
map.put("island","faranga");
MagicAPI.toXML(map,"root");
结果：
<root> <name>chris</chris> <island>faranga</island> </root>
然后回来：
Map<String,String> map = MagicAPI.fromXML("...");
我不想使用JAXB或JSON conversion API.它不必照顾嵌套地图或属性或任何其他，只是那个简单的情况。
有什么建议么？
编辑：我创建了一个工作副本&粘贴样品。感谢fvu和Michal Bernhard。
Download latest XStream framework，’core only’就够了。
Map<String,Object> map = new HashMap<String,Object>();
map.put("name","faranga");
// convert to XML
XStream xStream = new XStream(new DomDriver());
xStream.alias("map",java.util.Map.class);
String xml = xStream.toXML(map);
// from XML,convert back to map
Map<String,Object> map2 = (Map<String,Object>) xStream.fromXML(xml);
不需要转换器或任何其他。只是xstream-x.y.z.jar就够了。
XStream！
更新：我在注释中添加了请求的解组件。
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.converters.Converter;
import com.thoughtworks.xstream.converters.MarshallingContext;
import com.thoughtworks.xstream.converters.UnmarshallingContext;
import com.thoughtworks.xstream.io.HierarchicalStreamReader;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import java.util.AbstractMap;
import java.util.HashMap;
import java.util.Map;
public class Test {
public static void main(String[] args) {
Map<String,String>();
map.put("name","chris");
map.put("island","faranga");
XStream magicApi = new XStream();
magicApi.registerConverter(new MapEntryConverter());
magicApi.alias("root",Map.class);
String xml = magicApi.toXML(map);
System.out.println("Result of tweaked XStream toXml()");
System.out.println(xml);
Map<String,String> extractedMap = (Map<String,String>) magicApi.fromXML(xml);
assert extractedMap.get("name").equals("chris");
assert extractedMap.get("island").equals("faranga");
}
public static class MapEntryConverter implements Converter {
public boolean canConvert(Class clazz) {
return AbstractMap.class.isAssignableFrom(clazz);
}
public void marshal(Object value,HierarchicalStreamWriter writer,MarshallingContext context) {
AbstractMap map = (AbstractMap) value;
for (Object obj : map.entrySet()) {
Map.Entry entry = (Map.Entry) obj;
writer.startNode(entry.getKey().toString());
Object val = entry.getValue();
if ( null != val ) {
writer.setValue(val.toString());
}
writer.endNode();
}
}
public Object unmarshal(HierarchicalStreamReader reader,UnmarshallingContext context) {
Map<String,String>();
while(reader.hasMoreChildren()) {
reader.moveDown();
String key = reader.getNodeName(); // nodeName aka element's name
String value = reader.getValue();
map.put(key,value);
reader.moveUp();
}
return map;
}
}
}
