package cn.com.softmap.cache.util; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.lang.reflect.Field; import java.lang.reflect.Modifier; import java.util.Arrays; import java.util.Collection; import java.util.Date; import java.util.Iterator; import java.util.List; /**  */ public class BeanUtil {
     private static final List
     LEAVES = Arrays.asList(Boolean.class, Character.class, Byte.class, Short.class,          Integer.class, Long.class, Float.class, Double.class, Void.class, String.class, Date.class);    /**     * 把Bean转换为字符串.     *     * @param obj     * @return String     */    public static String toString(Object obj) {
        if (obj == null)          return "null";       if (LEAVES.contains(obj.getClass())) {
           return obj.toString();       }       if (obj instanceof Enum) {
           return ((Enum
    ) obj).name();       }       if (obj.getClass().isArray()) {
           Object[] oa = (Object[]) obj;          StringBuffer sb = new StringBuffer();          sb.append("[");          for (int i = 0; i < oa.length; i++)             sb.append(toString(oa[i]));          sb.append("]");          return sb.toString();       }       if (obj instanceof Collection) {
           Collection
     tempCol = (Collection
    ) obj;          Iterator
     it = tempCol.iterator();          StringBuffer sb = new StringBuffer();          sb.append("[");          for (int i = 0; it.hasNext(); i++) {
              if (i > 0) {
                 sb.append(",");             }             Object val = it.next();             sb.append(toString(val));          }          sb.append("]");          return sb.toString();       }       if (obj instanceof Class) {
           return obj.getClass().getName();       }       StringBuilder sb = new StringBuilder();       sb.append(obj.getClass().getSimpleName()).append(":[");       for (Field f : obj.getClass().getDeclaredFields()) {
           if (Modifier.isStatic(f.getModifiers()))             continue;          f.setAccessible(true);          sb.append(f.getName()).append(":");          try {
              sb.append(toString(f.get(obj))).append(",");          } catch (IllegalArgumentException e) {
              e.printStackTrace();          } catch (IllegalAccessException e) {
              e.printStackTrace();          }       }       sb.append("]");       return sb.toString();    }    /**     * 通过序列化进行深度复制     *     * @param obj     * @return Object     * @throws Exception     */    public static Object deepClone(Object obj) throws Exception {
        return deserialize(serialize(obj));    }    /**     * @param obj     * @return byte[]     * @throws IOException     */    public static byte[] serialize(Object obj) throws IOException {
        if (null == obj) {
           return null;       }       // 将对象写到流里       ByteArrayOutputStream bo = new ByteArrayOutputStream();       ObjectOutputStream oo = new ObjectOutputStream(bo);       oo.writeObject(obj);       oo.flush();       return bo.toByteArray();    }    /**     * @param bytes     * @return Object     * @throws Exception     */    public static Object deserialize(byte[] bytes) throws Exception {
        if (null == bytes || bytes.length == 0) {
           return null;       }       ByteArrayInputStream bi = new ByteArrayInputStream(bytes);       ObjectInputStream oi = new ObjectInputStream(bi);       return oi.readObject();    } }