//dto.lastTime = new Date();
dto.realname = "realname";
dto.username = "username";
Class clz = dto.getClass();
Table table = (Table) clz.getAnnotation(Table.class);
if (null == table) {
throw new RuntimeException("DTO内不含有Table注解Annotation");
}
sql.append("INSERT INTO ").append(table.name()).append(" (");
Field[] fields = clz.getDeclaredFields();
Object value = null;
Column column;
for (int i = 0; i < fields.length; i++) {
column = fields[i].getAnnotation(Column.class);