response.getWriter().write（）功能优于springMvc的返回

response.getWriter().write（）可以替代springMvc的返回（页面，字符）而且还可返回图片都可被ajax（字符），src（图片，完整页面字符）接收

 

response.getWriter().write(str);这种写入的就相当于生成了jsp/html，返回html/jsp

 

标签的src可以接收，页面/图片 写的方式页面（1，src加载url，这是可以springmvc方式返回，可以response.getWriter().write(str)返回）

 

ajax的回调函数可以接收json数据，也可以接收html/jsp，写的方式有两种1，直接springmvc返回（页面/json），2，response.getWriter().write(str)（页面/json）

@responseBody(springmvc直接json)，如果返回的是html,ajax需声明dataType:"html",不加这个返回页面，用response.getWriter().write(str)也可返回字符串

也就是说springMvc封装返回的东西src可以接收(页面，json)，ajax可以接收（页面，json）

最原生的response.getWriter().write(str)返回，src可以接收（图片，完整的页面字符），ajax也可接收（字符串）

   //整个跳转页面，不是字符串拼接形式的页面字符串返回，用dataType='Html'

function checkChatRecord(type) {

setTotalMoney();

var conobjKey = $(".class_conobjKey").val();

var selectedCustomerKey = $(".class_RedFont span").html();

var ownerKey = $(".class_tbConobjCustomerKey").val();

if (selectedCustomerKey == undefined) {

selectedCustomerKey = $(".class_currentUserKey").val();

}

var urlCurrentUserKey= $(".class_currentUserKey").val();

if(type==1){

$("#chatRecord").html("<image src=\"" + webUrl + "/resources/images/icon/loader.gif\" />");

}

$.ajax({

url : webUrl + "/chat/offer/record/" + conobjKey + "/" + ownerKey

+ "/" + selectedCustomerKey + "/" + urlCurrentUserKey,

type : "get",

cache : false,

async : true,

success : function(ret) {

if($("#chatRecord").html().indexOf("<image src=")>0){$("#chatRecord").html("");};

if ($("#chatRecordJsonHidden").html() == ret) {

} else {

$("#chatRecordJsonHidden").html(ret);

writeChatRecord(ret);

}

},

error : function(retMsg) {

//$("#chatRecord").html("");

}

});

}

 

function writeChatRecord(ret){

var json1=(ret);

var json = eval(json1);

var str="";

$(".class_highPrice").html(json.highPrice);

$(".class_lowPrice").html(json.lowPrice);

for(i=0;i<json.chatRecord.length;i++){

var jsonchatRecord=json.chatRecord[i];

if(jsonchatRecord.chatChoice=="2"){

str+="<div class=\"mt20 p10\">";

str+="<div class=\"other1 fr\">";

str+="<div class=\"ico_jc1\"></div>";

str+="<div class=\"chat_name\">"+jsonchatRecord.chatName+"</div>";

str+="价格：<font class=\"cred fb\">"+jsonchatRecord.chatPrice+" </font>";

str+=jsonchatRecord.chatCurrency;

str+="/"+jsonchatRecord.chatNumUnit;

str+="； 数量：<font class=\"cred fb\">"+jsonchatRecord.chatNum+"</font>";

str+=jsonchatRecord.chatNumUnit;

str+="<p>"+jsonchatRecord.chatMsgText+"</p>";

str+="</div>";

str+="<div class=\"cb\"></div>";

str+="</div>";

}else{

str+="<div class=\"mt20 p10\">";

str+="<div class=\"other fl\">";

str+="<div class=\"chat_name1\">"+jsonchatRecord.chatName+"</div>";

str+="<div class=\"ico_jc\"></div>";

str+="价格：<font class=\"cred fb\">"+jsonchatRecord.chatPrice+" </font>";

str+=jsonchatRecord.chatCurrency;

str+="/"+jsonchatRecord.chatNumUnit;

str+="； 数量：<font class=\"cred fb\">"+jsonchatRecord.chatNum+"</font>";

str+=jsonchatRecord.chatNumUnit;

str+="<p>"+jsonchatRecord.chatMsgText+"</p>";

str+="</div>";

str+="<div class=\"cb\"></div>";

str+="</div>";

}

}

$("#chatRecord").html(str);

}

 

 

 

 

@RequestMapping(value = "/chat/offer/record/{conobjKey}/{ownerKey}/{tradeCustomerKey}/{urlCurrentUserKey}", method = RequestMethod.GET)

public void TbConOrdPriceGetRecord(HttpSession session, HttpServletRequest request, HttpServletResponse response, @PathVariable String conobjKey,

@PathVariable String ownerKey, @PathVariable String tradeCustomerKey, @PathVariable String urlCurrentUserKey, Model model)

throws EsteelException, IOException {

 

if (conobjKey.equals("") || ownerKey.equals("") || tradeCustomerKey.equals("") || urlCurrentUserKey.equals("")) {

writeToResponse(response, "invalid key");

} else {

/* 获取当前用户的key */

String currentuserKey = getCurrentUserKey(request, session);

if (!currentuserKey.equals(urlCurrentUserKey)) {

currentuserKey = urlCurrentUserKey;

}

if (!currentuserKey.equals(ownerKey) && !currentuserKey.equals(tradeCustomerKey)) {

/* 如果当前用户不是主人或者客户，不允许查看 */

writeToResponse(response, "access denied");(///其他角色不可以看)

} else {

TbConObj tbConObj = tbConObjService.getTbConObjById(conobjKey);//-- 表名称: TB_CON_OBJ-- 表描述: 报盘标的

List<TbConOrdVo> tbConOrdVoList = tbConOrdService.getTbConOrdVoList(conobjKey, tradeCustomerKey); ////TB_CON_ORD,报盘委托（报盘）

String strJson = "({";

strJson += "\"chatRecord\":[";

int k = 0;

String highPrice = "1999999999";

String lowPrice = "0";

for (TbConOrdVo tbConOrdVo1 : tbConOrdVoList) {

/* 循环得到最高价和最低价 */

if (tbConOrdVo1.getOrdpriceMan() != null) {

if (tbConOrdVo1.getOrdpriceMan().equals("B")) {///B是发起方，B是买方

/* 是发起方 */

if (tbConOrdVo1.getContradeType().equals("A")) {

/* 是卖单 */

if (Double.parseDouble(highPrice) > Double.parseDouble(tbConOrdVo1.getOrderPrice())) {

highPrice = tbConOrdVo1.getOrderPrice();

}

} else {

/* 是买单 */

if (Double.parseDouble(lowPrice) < Double.parseDouble(tbConOrdVo1.getOrderPrice())) {

lowPrice = tbConOrdVo1.getOrderPrice();

}

}

} else {

/* 不是是发起方 */

if (tbConOrdVo1.getContradeType().equals("A")) {

/* 是卖单 */

if (Double.parseDouble(lowPrice) < Double.parseDouble(tbConOrdVo1.getOrderPrice())) {

lowPrice = tbConOrdVo1.getOrderPrice();

}

} else {

/* 是买单 */

if (Double.parseDouble(highPrice) > Double.parseDouble(tbConOrdVo1.getOrderPrice())) {

highPrice = tbConOrdVo1.getOrderPrice();

}

}

}

} else {

/* 不是是发起方 */

if (tbConOrdVo1.getContradeType().equals("A")) {

/* 是卖单 */

if (Double.parseDouble(lowPrice) < Double.parseDouble(tbConOrdVo1.getOrderPrice())) {

lowPrice = tbConOrdVo1.getOrderPrice();

}

} else {

/* 是买单 */

if (Double.parseDouble(highPrice) > Double.parseDouble(tbConOrdVo1.getOrderPrice())) {

highPrice = tbConOrdVo1.getOrderPrice();

}

}

}

k = k + 1;

strJson += "{";

String msgText = tbConOrdVo1.getMsgText();

if (msgText == null || msgText.contains("请录入您的议价留言，最大为300个字符！按Ctrl+Enter提交！")) {

msgText = "";

}

/* 替换掉换行符，否则会报错 */

msgText = msgText.replaceAll("\n", "");

int chatChoice = 0;

if (tbConOrdVo1.getOrdpriceMan() != null) {

if (tbConOrdVo1.getOrdpriceMan().equals("B")) {

/* 是发起方 */

chatChoice = 1;

strJson += "\"chatChoice\":\"1\",";

} else {

chatChoice = 2;

/* 不是是发起方 */

strJson += "\"chatChoice\":\"2\",";

}

} else {

chatChoice = 2;

strJson += "\"chatChoice\":\"2\",";

}

if (tbConObj.getAnonymMark().equals("B")) {

strJson += "\"chatName\":\"***\",";

} else {

/*

* 当currentuserKey eq

* tbConObj.getCustomerKey()，说明当前是主人在浏览

*/

/*

* 当currentuserKey eq

* tbConOrdVo1.getCustomerKey()，说明是客人在浏览

*/

if (chatChoice == 1 && currentuserKey.equals(tbConObj.getCustomerKey())) {

strJson += "\"chatName\":\"我\",";

} else if (chatChoice == 2 && currentuserKey.equals(tbConOrdVo1.getCustomerKey())) {

strJson += "\"chatName\":\"我\",";

} else {

strJson += "\"chatName\":\"" + tbConOrdVo1.getCustomerName() + "\",";

}

}

strJson += "\"chatPrice\":\"" + tbConOrdVo1.getOrderPrice() + "\",";

if (tbConObj.getCurrencyType().equals("A")) {

strJson += "\"chatCurrency\":\"元\",";

} else if (tbConObj.getCurrencyType().equals("B")) {

strJson += "\"chatCurrency\":\"美元\",";

}

strJson += "\"chatNumUnit\":\"" + tbConObj.getNumUnit() + "\",";

strJson += "\"chatNum\":\"" + tbConOrdVo1.getOrderNum() + "\",";

strJson += "\"chatMsgText\":\"" + msgText + "\"}";

if (k < tbConOrdVoList.size()) {

strJson += ",";

}

}

strJson += "],";

strJson += "\"highPrice\":\"" + highPrice + "\",";

strJson += "\"lowPrice\":\"" + lowPrice + "\"";

strJson += "})";

writeToResponse(response, strJson);//组装到页面

}

}

}

private void writeToResponse(HttpServletResponse response, String str) throws IOException {

response.setCharacterEncoding("UTF-8");

response.getWriter().write(str);

}