java 实体类互相转化

public static void copyFieldsTo(Object from, Object to) {
    Set<String> getFields = getGetFields(from.getClass());
    Set<String> fields = new HashSet();

    for (Method method : to.getClass().getMethods()) {
        String methodName = method.getName();
        if (methodName.startsWith("set")) {
            String name = getFieldName(method.getName());
            if (getFields.contains(name)) {
                fields.add(name);
            }
        }
    }
    try {
        for (String expression : fields) {
            Object value = Ognl.getValue(expression, from);
            if (value != null && !"".equals(value)) {
                Ognl.setValue(expression, to, value);
            }
        }
    } catch (Exception ex) {
        logger.error("异常",ex);
    }

}

前提 是 字段名相同