ajax同步提交 晕死

xmlHttpRequest.open("POST", url, false); // 同步请求，true为异步
不就会等待你的ajax请求返回了吗？ 

if(action.equalsIgnoreCase("get")){

ArrayList arr_oaSchedule=(ArrayList)oaScheduleService.findByUserName(userName);

response.setContentType("text/xml; charset=UTF-8");

response.setHeader("Cache-Control", "no-cache");

//创建输出流对象

PrintWriter out = response.getWriter();

//依据验证结果输出不同的数据信息

out.println("<response>");

if(arr_oaSchedule.size()!=0){

for(int i=0;i<arr_oaSchedule.size();i++){

OaSchedule oaSchedule=(OaSchedule)arr_oaSchedule.get(i);

Date now=new Date();

Date date=oaSchedule.getRemindTime();

Boolean ture=date.before(now);

if(ture&&oaSchedule.getRemind()==null){

out.println("<id>" + oaSchedule.getId() + "</id>");

out.println("<content>" + oaSchedule.getContent() + "</content>");

out.println("<remindtime>" + time(oaSchedule.getRemindTime()) + "</remindtime>");

out.println("<starttime>" + time(oaSchedule.getStartTime()) + "</starttime>");

}

}

}

else {

out.println("<id>0</id>");

out.println("<content></content>");

out.println("<remindtime></remindtime>");

out.println("<starttime></starttime>");

}

out.println("</response>");

out.close();

}

if(action.equalsIgnoreCase("get1")){

ArrayList arr_oaSchedule=(ArrayList)oaScheduleService.findByUserName(userName);

response.setContentType("text/xml; charset=UTF-8");

response.setHeader("Cache-Control", "no-cache");

//创建输出流对象

PrintWriter out = response.getWriter();

//依据验证结果输出不同的数据信息

out.println("<response>");

if(arr_oaSchedule.size()!=0){

for(int i=0;i<arr_oaSchedule.size();i++){

OaSchedule oaSchedule=(OaSchedule)arr_oaSchedule.get(i);

out.println("<id>" + oaSchedule.getId() + "</id>");

out.println("<content>" + transform(oaSchedule.getContent()) + "</content>");

out.println("<remindtime>" + time(oaSchedule.getRemindTime()) + "</remindtime>");

out.println("<starttime>" + time(oaSchedule.getStartTime()) + "</starttime>");

if(i==3)break;

}

}

else {

out.println("<id>0</id>");

out.println("<content></content>");

out.println("<remindtime></remindtime>");

out.println("<starttime></starttime>");

}

out.println("</response>");

out.close();

}

return null;

}

public String time(Date date1){

String year=String.valueOf(date1.getYear()+1900);

String month=String.valueOf(date1.getMonth());

if(date1.getMonth()<10)

month="0"+month;

String date=String.valueOf(date1.getDate());

if(date1.getDate()<10)

date="0"+date;

String hour=String.valueOf(date1.getHours());

if(date1.getHours()<10)

hour="0"+hour;

String min=String.valueOf(date1.getMinutes());

if(date1.getMinutes()<10)

min="0"+min;

String time=year+"-"+month+"-"+date+" "+hour+":"+min;

return time;

}

public static String transform(String content)

{

content=content.replaceAll("&","&amp;");

content=content.replaceAll("<","&lt;");

// content=content.replaceAll(" ","&nbsp;");

content=content.replaceAll(">","&gt;");

// content=content.replaceAll("/n","<br>");

return content;

}

if(action.equalsIgnoreCase("get")){

ArrayList arr_oaMessage=(ArrayList)oaMessageService.findByUserName(userName);

response.setContentType("text/xml; charset=UTF-8");

response.setHeader("Cache-Control", "no-cache");

//创建输出流对象

PrintWriter out = response.getWriter();

//依据验证结果输出不同的数据信息

out.println("<response>");

if(arr_oaMessage.size()!=0){

for(int i=0;i<arr_oaMessage.size();i++){

OaMessage oaMessage=(OaMessage)arr_oaMessage.get(i);

String content=oaMessage.getContent();

content=transform(content);

out.println("<id>" + oaMessage.getId() + "</id>");

out.println("<fromUserName>" + oaMessage.getFromUserName() + "</fromUserName>");

out.println("<content>" + content + "</content>");

out.println("<time>" + oaMessage.getTime() + "</time>");

if(i==3)break;

}

}

else {

out.println("<id>0</id>");

out.println("<fromUserName></fromUserName>");

out.println("<content></content>");

out.println("<time></time>");

}

out.println("</response>");

out.close();

}