项目中遇到一个对timestamp 进行数据转换问题,spring mvc 提供了
initBinder的方法来处理这类型的问题,下面记录一下。
controller 注册转换的PropertyEditor：
@Override protected void initBinder(HttpServletRequest request, ServletRequestDataBinder binder) throws Exception { // TODO Auto-generated method stub //yyy/mmdd yyy-mm-dd yy-mm-dd HH:mm:ss binder.registerCustomEditor(Timestamp.class, new TimeStampPropertyEditor()); super.initBinder(request, binder); } 编写对于TimeStampPropertyEditor 的转换操作
public class TimeStampPropertyEditor extends PropertyEditorSupport { private String pattern = "yyyy-MM-dd HH:mm:ss.S"; private String[] formater_pattern = new String[] { "yyyy-MM-dd HH:mm:ss.S", "yyyy-MM-dd HH:mm:ss" }; /** * */ public TimeStampPropertyEditor() { // TODO Auto-generated constructor stub } public TimeStampPropertyEditor(String pattern) { // TODO Auto-generated constructor stub this.pattern = pattern; } /* * (non-Javadoc) * * @see java.beans.PropertyEditorSupport#setAsText(java.lang.String) */ @Override public void setAsText(String text) throws IllegalArgumentException { if (StringUtils.isEmpty(text)) { setValue(null); } else { try { Date date = DateUtils.parseDate(text, formater_pattern); Timestamp timestamp = new Timestamp(date.getTime()); // 设置转换完的值 setValue(timestamp); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); setValue(null); } } } /* * (non-Javadoc) * * @see java.beans.PropertyEditorSupport#getAsText() */ @Override public String getAsText() { // TODO Auto-generated method stub // 获取model的值 Timestamp value = (Timestamp) getValue(); if (value == null) { return ""; } else { try { Date date = new Date(value.getTime()); String str = DateFormatUtils.format(date, pattern); return str; } catch (Exception e) { return ""; } } }}
ok,当pages-->controller-->对应method-->initbinder-->bind转换
这个过程会针对TimeStamp类型的类进行使用对用的转换器
参考 这个的博客，有更多springmvc介绍