- JScript code
function ajaxcheck() { alert("ajax"); var obj = document.form1; var name=obj.username.value.trim();//trim()功能删除字符串首部和尾部的空格 var pwd=obj.password.value.trim(); alert(name); ajaxcommon.doCheck(name,pwd,reloadym); } function reloadym(msg) { if(msg){ alert("欢迎登录"); }else{ alert("用户名或密码错误"); } //document.location.reload(true); window.location.href="welcome.jsp"; }- Java code
public boolean doCheck(String name,String password){ WebContext webContext = WebContextFactory.get(); HttpServletRequest request = webContext.getHttpServletRequest(); HttpServletResponse response = webContext.getHttpServletResponse(); System.out.println("00:"+request.getContextPath()); TabUser operator = new TabUser(); operator.setUsername(name); operator.setPassword(password); List<TabUser> userlist = userService.findUser(operator); System.out.println("11"); if(userlist.size()==0){ request.setAttribute("msg","1"); System.out.println("msg:"+request.getAttribute("msg")); System.out.println("22"); return false; }else{ System.out.println("33"); request.setAttribute("msg","2"); System.out.println("msg:"+request.getAttribute("msg")); return true;// String html = webContext.forwardToString("/welcome.jsp");// return html; } }jsp获取request.getAttribute("msg") msg为空这是什么原因？这window.location.href="welcome.jsp"有问题吗？
------解决方案--------------------
//dwr将要在前台调用的返回某个页面数据的方法 destURL:目标页面
public String getInclude(String destURL) throws ServletException, IOException{
//取得webapp上下文对象
org.directwebremoting.WebContext web= WebContextFactory.get();
//得到servlet中的request/response对象
javax.servlet.http.HttpServletRequest request=web.getHttpServletRequest();
javax.servlet.http.HttpServletResponse response=web.getHttpServletResponse();
//在此可提取request中相关请求参数...
//取得session对象
javax.servlet.http.HttpSession session=request.getSession();
//在此通过session做用户登陆等验证....
//返回页面结果
return web.forwardToString("/"+destURL);
}
------解决方案--------------------
楼主，dwr 可以直接返回对象，为何要用request返回，没用过，不清楚，
难道返回对象都不能满足楼主的要求吗？