1、在控制器添加异常处理
@Exception'Handle（异常类名）
public String handle（类名）{
return “异常的页面”；
}
发生指定异常时跳转
2、这种异常处理方式并不能处理404请求错误，需要在web.xml配置错误页面
<error-page> <exception-type>java.lang.Throwable</exception-type> <location>/WEB-INF/views/error/404.jsp</location> </error-page>
3、/**
* 向所有的用户发送消息
* @param message
*/
public static void sendMessage(String message){
Set<WebSocket> keySet = userconnections.keySet();
synchronized (keySet) {
for (WebSocket conn : keySet) {
String user = userconnections.get(conn);
if(user != null){
conn.send(message);
}
}
}
}
4、@RequestMapping(value="/delete",method=RequestMethod.GET,produces="text/html;charset=UTF-8")
public String delete(RedirectAttributes ra,String id,HttpServletRequest request){
5、HttpSession session = request.getSession();
PageData d = (PageData) session.getAttribute("dealer");
//单个，集合删除，查询后条件不丢失删除
dealerService.deleteAll(StringUtils.StringToList(id));
6、return "redirect:1/dealerList?jyxkz="+StringUtils.nullTo(d.get("jyxkz"))+"&name="+StringUtils.nullTo(d.get("name"))
7、+"&storeName="+StringUtils.nullTo(d.get("storeName"))+"&phone="+StringUtils.nullTo(d.get("phone"));
}
