用jquery 如何获取servlet中输出的值

Posted 2023-04-24

package com.wensheng.uidesign;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class UICardDataSourceServlet extends HttpServlet

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
//classNode表中的 实体表节点的 nodeCode
String nodeCode = request.getParameter("nodeCode");
request.setCharacterEncoding("GBK");
response.setContentType("text/html;charset=GBK");
UIBiz uibiz = new UIBiz();
StringBuilder outJson=uibiz.getUIListData2(nodeCode);
System.out.println("[UICardDataServlet].[outJson2]:"+outJson);
//在这里增加为没有表单数据的表添加表单界面数据。
if (outJson.length()<10)
System.out.println("[UICardDataServlet].[outJson]: 没有表单设计数据" );
//在这里进行表单设计数据初始化。
uibiz.buildDefaultCardData(nodeCode);
outJson= uibiz.getUICardDataByNodeCode(nodeCode);

PrintWriter out=response.getWriter();
out.print(outJson);
out.flush();
out.close();


@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
this.doGet(request, response);

要用jquery得到后台的信息，那么你就得用ajax来提交
下面是jquery里的一种提交方式，url就是你要提交到后台的url地址,null就是你要传递的参数，callback(data)就是回调函数，在这里对你得到的后台信息进行其它操作
$.post( url,null,
function callback(data)
//这里面的data就是你后台要输出的
) ; 参考技术A ajax

function getDaily1(cui)
var startTime=$('#daily_date_begin').val();
var endTime=$('#daily_date_end').val();
var v = $("#dept").val();
$.ajax(
url:'DQ_deptQueryAjax.do',
type:'post',
data:date1:startTime,date2:endTime,dept:v,
cache:false,
dataType:'json',
timeout: 2000000,
beforeSend: function()

,
complete: function()

,
error: function()
,
success:function(data)
if(data.states.length==1)
alert("NO ONE HAS WRITE DAILY");
else
$('#t').remove();

var startDatestr=$('#daily_date_begin').val();

var startstr=startDatestr.replace(/-/g,"/");
var endDatestr=$("#daily_date_end").val();
var endstr=endDatestr.replace(/-/g,"/");
var count=(new Date(endstr)-new Date(startstr))/(24*3600*1000);
var array_name=new Array(count+1);

var arr=new Array();
var arr_name=new Array();
arr.push("@@@@");
for(var i=0;i<data.user.length;i++)
arr.push(data.user[i].user_id);
arr_name.push(data.user[i].user_name);


var allitems=arr_name.length;
var nowpage=cui;
var pagesize=10;
var allpage=Math.ceil(1.0 * allitems /pagesize);
var startrow=(nowpage-1)*pagesize;

var endrow=nowpage*pagesize;
if(endrow>=allitems)
endrow=allitems;

var str='<table id="t" class="title" border="1">';
str=str+'<tr style="background: #DAF0F0"><th>---</th>';
for(var x=0;x<=count;x++)
var da=new Date(startstr);
var days=new Date(da.getTime()+x*24*3600*1000);
str=str+'<th>'+days.getYear()+'-'+(days.getMonth()+1)+'-'+days.getDate()+'</th>';


str=str+'</tr>';
str=str+'<tr style="background: #DAF0F0"><th>姓名</th>';
for(var x=0;x<=count;x++)
var da=new Date(startstr);
var days=new Date(da.getTime()+x*24*3600*1000);
var m="";
switch(days.getDay())
case 1:
m="一";
break;
case 2:
m="二";
break;
case 3:
m="三";
break;
case 4:
m="四";
break;
case 5:
m="五";
break;
case 6:
m="六";
break;
case 0:
m="日";
break;

if(m=="六"||m=="日")
array_name[x]="weekend";

str=str+'<th>星期'+m+'</th>';

str=str+'</tr>';
for(var n=startrow;n<endrow;n++)


str=str+'<tr><th style="background: #DAF0F0">'+arr_name[n]+'</th>';
for(var m=0;m<=count;m++)
var da=new Date(startstr);
var days=new Date(da.getTime()+m*24*3600*1000);
var ty=days.getDate();
var my=days.getMonth()+1;
if(my<9)
my='0'+my;

if(ty<10)
ty='0'+days.getDate();

var str1=days.getYear()+'-'+my+'-'+ty;
if(array_name[m]!=null)
str=str+'<td style="background: #ADD8E6"></td>';
else
for(var k=0;k<data.city.length;k++)

if(data.city[k].id==arr[n+1]&&data.city[k].date==str1)

str=str+'<td style="background:#CCCCCC"></td>';
break;
if(k==data.city.length-1)
str=str+'<td style="background:red"></td>';




str=str+'</tr>';


str=str+"<tr class='title'><td colspan='"+(count+2)+"'>";
str=str+"当前页:"+nowpage+"/"+allpage+"  ";
if(nowpage>1)
str=str+"<a href='javascript: getDaily1(1)'>首 页</a>  "


if(nowpage>1)

str=str+"<a href='Javascript: getDaily1("+(nowpage-1)+")'>上一页</a>  ";


后台

package neusoft.team101.dms.action.dailyquery;

import java.io.PrintWriter;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import neusoft.team101.dms.dao.imp.dailyquery.dailyQueryImpl;
import neusoft.team101.dms.domain.common.User;
import neusoft.team101.dms.domain.dailyquery.Dept;
import neusoft.team101.dms.json.JSONArray;
import neusoft.team101.dms.json.JSONObject;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

public class DQ_deptcheckQueryAjaxAction extends Action
private dailyQueryImpl dept;

public void setDept(dailyQueryImpl dept)
this.dept = dept;


public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception
HttpSession session=request.getSession();
User user = (User) session.getAttribute("user");
int user_id=Integer.parseInt(user.getUser_id());
PrintWriter out=response.getWriter();
String startTime=request.getParameter("date1");
String endTime=request.getParameter("date2");
int dept_id=Integer.parseInt(request.getParameter("dept"));
dept.setNowpage(Integer.parseInt(request.getParameter("num")));
List<Dept> dailys=dept.deptnocheckQuery(startTime, endTime,dept_id,user_id);
JSONObject json=new JSONObject();
JSONArray jsonMembers = new JSONArray();
for(Dept daily:dailys)
JSONObject member = new JSONObject();
member.put("dept_name", daily.getDPT_NAME());
member.put("user_name", daily.getUser_name());
if(daily.getE_mail()==null)
daily.setE_mail("暂无");

member.put("email",daily.getE_mail());
member.put("daily_date", daily.getDaily_date());
jsonMembers.put(member);

JSONArray jsonMembers1 = new JSONArray();
JSONObject member1 = new JSONObject();
member1.put("pagesize",dept.getPagesize());
member1.put("allpage", dept.getAllpage());
member1.put("allitems", dept.getAllitems());
member1.put("nowpage", dept.getNowpage());
jsonMembers1.put(member1);
json.put("check", jsonMembers);
json.put("page", jsonMembers1);
out.print(json);
return null;

参考技术B 要用jquery得到后台的信息，那么你就得用ajax来提交
下面是jquery里的一种提交方式，url就是你要提交到后台的url地址,null就是你要传递的参数，callback(data)就是回调函数，在这里对你得到的后台信息进行其它操作
$.post( url,null,
function callback(data)
//这里面的data就是你后台要输出的
) ;本回答被提问者采纳

如何在servlet中获取后台运行脚本的输出

我使用Runtime.getRuntime（）。exec（）通过java调用脚本，并让脚本在后台运行以创建文件，即使在其他页面上工作，如何在文件完成时在servlet中获取输出

答案

这是获取命令执行输出的代码，但是您无法获得需要更多时间的后台进程的输出。对于更耗时的命令，您必须使用javascript安排命令，您可以定期轮询命令输出。

public void executeAndGetResponse( HttpServletResponse response ) {
    Process process = Runtime.getRuntime().exec( "some command" );

    if( process != null ) {
        int status = process.getWaitFor(); // wait for completion
        InputStream in = null;
        if( status == 0 ) {         
            in = process.getInputStream(); // if success get output
        } else {
            in = process.getErrorStream(); // if failure get error
        }
        OutputStream out = response.getOutputStream();

        org.apache.commons.io.IOUtils.copy(in,out);
    }
}