js中调用方式：

var params = {};
params["aakey"]="aavalue";
params["bbkey"]="bbvalue";
$.cosajax({url: path + "**.action",data: params, //一个对象，包含很多键值对，jquery自动转化为aakey=aavalue&bbkey=bbvalue的形式callback: function(result) {
}
});

function checkSessionTimeOut(result) { //增加session超时判断if (result &&!(result.success) && result.message == 'timeout') {top.document.location= path + '/frame.action';returntrue;}return false;
}
function showTip(msg,callback){$("#mask_bg").css("z-index","9999"); //窗口置于最上面$("#okbtn").unbind();  //删除okbtn的其他事件$("#mask_new").show();$("#okbtn").one('click', callback); //增加点击事件，隐藏tip}
function hideTip(){$("#mask_new").hide();$("#mask_bg").hide();}
jQuery.extend({cosajax : function(opts) {opts= jQuery.extend({url : "",data : "",isWait: false,isClose: true,callback : function() {returnfalse;},fail : function() {returnfalse;}},opts || {});  //逗号后面opts||{}是对前面的扩展$.ajax({type : "POST",dataType : "json",url : opts.url,async : false,data : opts.data, //多个参数用&连接timeout: 180000,  beforeSend : function() {},complete : function(result) {if (!opts.isWait) {  //成功失败都会调用complete方法hiddenWait();}},success : function(result) {// 增加session超时判断if(checkSessionTimeOut(result)) {return;}if (result.success) {opts.callback(result);  //调用opts中callback方法}else{if(opts.isClose) {  //关闭窗口closeWindows();var errTipMessage =result.message;switch (result.message) {case'500':errTipMessage=”操作失败”;break;default:errTipMessage= result.message;break;}showTip(errTipMessage,hideTip); //hiteTip是点击事件的回调函数} else {hiddenWait();opts.fail(result);}}},error : function() {if(opts.isClose) {closeWindows();showTip(“操作失败”,hideTip);}else{hiddenWait();opts.fail();}}});}
});