ajax配合java简单案例

双重AJAX的案例

function select(){
$.ajax({//AJAX执行
type : 'POST',
url : '${ctx}/dingDanSelect.chtml',
dataType : 'text',
data : {
"creatTime" : $("#creatTime").val(),
"orderId" : $("#orderId").val()
},
success : function(data) {  //正确执行得到数据，进行回调函数处理
if (data == 'ok') {//通过校验
tonewpage();
} else if (data == 'false') {
$("#showconent").empty();
$("#alert").show();
$(".lightbox-shadow").show();
var b ="<p2>此订单是否已完成支付？</p2><br/><br/><br/><br/>"
b=b+"<a onclick='colsed();' id='alertMessage-center-link1' href='#' style='margin: 0px auto; padding: 20px; color: #438EB9'>是</a>"//关闭窗口
b=b+"<a onclick='savePayOrder();' id='alertMessage-center-link2' href='#' style='margin: 0px auto; padding: 20px; color: #438EB9'>否</a> "//继续支付
$("#showconent").append(b);
}else if (data == 'false') {
$("#showconent").empty();
$("#alert").show();
$(".lightbox-shadow").show();
var b ="<p>该订单订单已经超时，无法继续付款！</p>" 
b=b+"<a  id='alertMessage-center-link' href='${ctx}/app/index.chtml'>确定</a> "
$("#showconent").append(b);
}
},
error : function() {
 
}
});  
}

后来JAVA接受的代码部分

import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.MessageDigest;
import java.sql.SQLException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.Random;


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


import net.sf.json.JSONArray;
import net.sf.json.JSONObject;


import org.apache.commons.lang3.StringUtils;
import org.apache.log4j.Logger;
import org.jasig.cas.client.authentication.AttributePrincipal;
import org.jasig.cas.client.util.AssertionHolder;
import org.jasig.cas.client.validation.Assertion;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

@RequestMapping(value = "/dingDanSelect", method = RequestMethod.POST)
public void checkStoreName(HttpServletRequest request, HttpServletResponse response, 
@RequestParam("creatTime") String creatTime,@RequestParam("orderId") String orderId) {
 
response.setContentType("text/html;charset=UTF-8");
  PrintWriter out = response.getWriter();
      out.print("time");//该订单超时
      out.flush();
    out.close();
      
 

}   
}

带数据形式的

function tonewpage(){//获得跳转地址
$.ajax({ 
type : 'POST',
url : '${ctx}/app/dingDanTiaoZhuan.chtml',
dataType : 'text',
data : {
"creatTime" : $("#creatTime").val(),
"orderId" : $("#orderId").val()
},
success : function(msg) {
var per = eval(msg);
for ( var i = 0; i < per.length; i++) {
paUrl=per[i]; 
                savePayOrder();//per[i]; 
               //  self.location=per[i]; 
      }
},
});  

}

@RequestMapping(value = "/dingDanSelect", method = RequestMethod.POST)
public void checkStoreName(HttpServletRequest request, HttpServletResponse response, 
@RequestParam("creatTime") String creatTime,@RequestParam("orderId") String orderId) {
 
response.setContentType("text/html;charset=UTF-8");
  PrintWriter out = response.getWriter();
        List listUrl=new ArrayList();
listUrl.add(urlAll);
JSONArray jsarr = JSONArray.fromObject(listUrl);
PrintWriter out = response.getWriter();


out.print(jsarr.toString());


out.flush();
out.close();
      out.flush();
     out.close();
      
 

}   
}