package com.honzh.common.page; import java.util.List; import com.thoughtworks.xstream.annotations.XStreamAlias; @XStreamAlias("pageGrid") @SuppressWarnings("rawtypes") public class PageGrid { private int page; private int total; private int records; private List data; public int getPage() { return this.page; } public void setPage(int page) { this.page = page; } public int getTotal() { return this.total; } public void setTotal(int total) { this.total = total; } public int getRecords() { return this.records; } public void setRecords(int records) { this.records = records; } public List getData() { return this.data; } public void setData(List data) { this.data = data; } }
项目中需要xstream.jar，自行下载。
XStreamComponent.java
package com.honzh.common.page; import org.apache.commons.lang.StringUtils; import com.thoughtworks.xstream.XStream; import com.thoughtworks.xstream.converters.Converter; import com.thoughtworks.xstream.io.xml.DomDriver; import com.thoughtworks.xstream.mapper.DefaultMapper; import com.thoughtworks.xstream.mapper.XStream11XmlFriendlyMapper; public class XStreamComponent { private XStream xstream; public static XStreamComponent newInstance() { XStreamComponent xmlComponent = new XStreamComponent(); xmlComponent.alias(new Class[] { PageGrid.class }); return xmlComponent; } public XStreamComponent() { this.xstream = new XStream(new DomDriver()); } public String toXML(Object obj) { return this.xstream.toXML(obj); } public String toPageXML(Object obj) { registerConverter(new MapCustomConverter(new DefaultMapper(XStream11XmlFriendlyMapper.class.getClassLoader()))); return toXML(obj); } public Object fromPageXML(String xml) { registerConverter(new MapCustomConverter(new DefaultMapper(XStream11XmlFriendlyMapper.class.getClassLoader()))); return fromXML(xml); } public Object fromXML(String xml) { return this.xstream.fromXML(xml); } @SuppressWarnings("rawtypes") public void processAnnotations(Class type) { this.xstream.processAnnotations(type); } @SuppressWarnings("rawtypes") public void processAnnotations(Class[] types) { this.xstream.processAnnotations(types); } @SuppressWarnings("rawtypes") public void alias(String name, Class type) { this.xstream.alias(name, type); } @SuppressWarnings("rawtypes") public void alias(Class[] types) { for (Class type : types) { String className = type.getName(); try { String[] classNames = StringUtils.split(className, "."); this.xstream.alias(classNames[(classNames.length - 1)], type); } catch (Exception ex) { this.xstream.alias(className, type); } } } public void registerConverter(Converter converter) { this.xstream.registerConverter(converter); } @SuppressWarnings("rawtypes") public void useAttributeFor(Class definedIn, String fieldName) { this.xstream.useAttributeFor(definedIn, fieldName); } }
主要将pageGrid封装为xml对象，进而传递会前端。
MapCustomConverter.java
package com.honzh.common.page; import java.util.HashMap; import java.util.Hashtable; import java.util.Iterator; import java.util.Map; import com.thoughtworks.xstream.converters.MarshallingContext; import com.thoughtworks.xstream.converters.UnmarshallingContext; import com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter; import com.thoughtworks.xstream.io.HierarchicalStreamReader; import com.thoughtworks.xstream.io.HierarchicalStreamWriter; import com.thoughtworks.xstream.mapper.Mapper; public class MapCustomConverter extends AbstractCollectionConverter { public MapCustomConverter(Mapper mapper) { super(mapper); } @SuppressWarnings("rawtypes") public boolean canConvert(Class type) { return (type.equals(HashMap.class)) || (type.equals(Hashtable.class)) || (type.getName().equals("java.util.LinkedHashMap")) || (type.getName().equals("sun.font.AttributeMap")); } @SuppressWarnings({ "rawtypes" }) public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) { Map map = (Map) source; for (Iterator iterator = map.entrySet().iterator(); iterator.hasNext();) { Map.Entry entry = (Map.Entry) iterator.next(); writer.startNode(entry.getKey() == null ? "null" : entry.getKey().toString()); writer.setValue(entry.getValue() == null ? "" : entry.getValue().toString()); writer.endNode(); } } @SuppressWarnings("rawtypes") public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context) { Map map = (Map) createCollection(context.getRequiredType()); populateMap(reader, context, map); return map; } @SuppressWarnings({ "rawtypes", "unchecked" }) protected void populateMap(HierarchicalStreamReader reader, UnmarshallingContext context, Map map) { while (reader.hasMoreChildren()) { reader.moveDown(); Object key = reader.getNodeName(); Object value = reader.getValue(); map.put(key, value); reader.moveUp(); } } }
主要将数据库中获取的hashmap转换为标准的xml格式数据。
BaseConditionVO.java