将Map转换为Java 对象

public class MapUtil {

    public static Object convert2Object(Class clazz,Map<String,Object[]> map) throws
            IntrospectionException, InstantiationException, IllegalAccessException{
        BeanInfo bi = Introspector.getBeanInfo(clazz);

        Object obj = clazz.newInstance();

        PropertyDescriptor[] pds = bi.getPropertyDescriptors();

        String pName;
        for(PropertyDescriptor pd:pds){
            pName = pd.getName();
            if(map.containsKey(pName)){
                try {
                    pd.getWriteMethod().invoke(obj, map.get(pName)[0]);
                } catch (Exception ex) {
                    Logger.getLogger(MapUtil.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        }

        return obj;
    }
}

使用方法：

Map<String,Object[]> map = request.getParameterMap();

Request req = (Request)MapUtil.convert2Object(Request.class, map);