① 怎么给后端返回的json中添加数据
(1) 将如下代码之后保存为 server.js
(2) 然后执行: node server.js
var http = require('http');
var url = require('url');
// 访问的json地址与返回的json数据映射关系
var array=[
{
url:'/signup/index.json',
json:'{"tasks":[{"finishType":"人数优先","gmtEnd":"2015-11-19 11:30:00","gmtStart":"2015-11-17 11:30:00","id":98,"memo":"招新任务01","name":"招新任务01","requireNum":10,"signepNum":0,"signupStatus":"","taskStatus":"进行中"}],"stat":"ok"}'
},
{
url:'/signup/applyCheck.json',
json:'{"signupInfo":{"alipayAccount":"20881021179902510156","alipayCardNo":"2088102117990251","birthday":"","certifyStatus":null,"city":"","college":"","email":"[email protected]","gender":null,"gmtCreate":null,"gmtModified":null,"id":2,"identityCardNo":"330283198903120025","identityCardPic":"","major":"","maxWeekHours":0,"minWeekHours":0,"mobile":"18905818799","province":"","qualificationPic":"","realName":"zhulu","recruitSource":"","signupTaskId":98,"status":null,"statusReason":"","student":false,"testScore":0,"trainScore":0},"checkResult":{"code":"SUCCESS","message":"处理成功","printResult":true,"success":true},"stat":"ok"}'
},
{
url:'/server/matchSuggest.json',
json:'{"TotalHits":88,"errorCode":0,"errorDesc":"no_error","MatchResults":[{"CatId":"4098","CatTitlePath":"%E5%86%85%E9%83%A8%E7%9F%A5%E8%AF%86%E5%BA%93%3E%E8%B4%A6%E6%88%B7%E5%9F%BA%E7%A1%80%E5%8F%8A%E8%B5%84%E4%BA%A7%E7%AE%A1%E7%90%86%EF%BC%88%E6%96%B0%EF%BC%89%3E%E8%B4%A6%E6%88%B7%E5%9F%BA%E7%A1%80%3E%E5%AF%86%E7%A0%81%3E%E6%89%8B%E5%8A%BF%E5%AF%86%E7%A0%81","ChannelNames":"","Content":"","CreatorName":"%E6%A1%83%E7%98%B4","GmtCreate":"2015-04-07 17:58:42","GmtModified":"2015-05-19 11:48:36","Id":"6056","Keywords":"","ModifierId":"12484","ModifierName":"%E7%89%A7%E6%9A%AE","Status":"PUBLISHED","Title":"%E9%80%9A%E8%BF%87%E6%94%AF%E4%BB%98%E5%AE%9D%E9%92%B1%E5%8C%85%EF%BC%8C%3Cfont+color%3Dred%3E%E5%BF%98%E8%AE%B0%3C%2Ffont%3E%E6%89%8B%E5%8A%BF%3Cfont+color%3Dred%3E%E5%AF%86%E7%A0%81%3C%2Ffont%3E%E7%9A%84%E5%A4%84%E7%90%86%E6%B5%81%E7%A8%8B","Type":"NORMAL","deleted":"N"}]}'
},
{
url:'/signup/signup.json',
json:'{"stat":"ok"}'
}
];
// var temResult='{"TotalHits":88,"errorCode":0,"errorDesc":"no_error","MatchResults":[{"CatId":"4098","CatTitlePath":"%E5%86%85%E9%83%A8%E7%9F%A5%E8%AF%86%E5%BA%93%3E%E8%B4%A6%E6%88%B7%E5%9F%BA%E7%A1%80%E5%8F%8A%E8%B5%84%E4%BA%A7%E7%AE%A1%E7%90%86%EF%BC%88%E6%96%B0%EF%BC%89%3E%E8%B4%A6%E6%88%B7%E5%9F%BA%E7%A1%80%3E%E5%AF%86%E7%A0%81%3E%E6%89%8B%E5%8A%BF%E5%AF%86%E7%A0%81","ChannelNames":"","Content":"%e7%87%95%e5%ad%90","CreatorName":"%E6%A1%83%E7%98%B4","GmtCreate":"2015-04-07 17:58:42","GmtModified":"2015-05-19 11:48:36","Id":"6056","Keywords":"","ModifierId":"12484","ModifierName":"%E7%89%A7%E6%9A%AE","Status":"PUBLISHED","Title":"%E9%80%9A%E8%BF%87%E6%94%AF%E4%BB%98%E5%AE%9D%E9%92%B1%E5%8C%85%EF%BC%8C%3Cfont+color%3Dred%3E%E5%BF%98%E8%AE%B0%3C%2Ffont%3E%E6%89%8B%E5%8A%BF%3Cfont+color%3Dred%3E%E5%AF%86%E7%A0%81%3C%2Ffont%3E%E7%9A%84%E5%A4%84%E7%90%86%E6%B5%81%E7%A8%8B","Type":"NORMAL","deleted":"N"},{"CatId":"4098","CatTitlePath":"%E5%86%85%E9%83%A8%E7%9F%A5%E8%AF%86%E5%BA%93%3E%E8%B4%A6%E6%88%B7%E5%9F%BA%E7%A1%80%E5%8F%8A%E8%B5%84%E4%BA%A7%E7%AE%A1%E7%90%86%EF%BC%88%E6%96%B0%EF%BC%89%3E%E8%B4%A6%E6%88%B7%E5%9F%BA%E7%A1%80%3E%E5%AF%86%E7%A0%81%3E%E6%89%8B%E5%8A%BF%E5%AF%86%E7%A0%81","ChannelNames":"","Content":"%e7%87%95%e7%aa%9d","CreatorName":"%E6%A1%83%E7%98%B4","GmtCreate":"2015-04-07 17:58:42","GmtModified":"2015-05-19 11:48:36","Id":"6056","Keywords":"","ModifierId":"12484","ModifierName":"%E7%89%A7%E6%9A%AE","Status":"PUBLISHED","Title":"%E9%80%9A%E8%BF%87%E6%94%AF%E4%BB%98%E5%AE%9D%E9%92%B1%E5%8C%85%EF%BC%8C%3Cfont+color%3Dred%3E%E5%BF%98%E8%AE%B0%3C%2Ffont%3E%E6%89%8B%E5%8A%BF%3Cfont+color%3Dred%3E%E5%AF%86%E7%A0%81%3C%2Ffont%3E%E7%9A%84%E5%A4%84%E7%90%86%E6%B5%81%E7%A8%8B","Type":"NORMAL","deleted":"N"}]}';
http.createServer(function(request, response){
response.writeHead(200,{
"Access-Control-Allow-Origin":"http://10.37.187.79:8000",
"Access-Control-Allow-Credentials": "true",
"Access-Control-Allow-Headers":"X-Requested-With",
"Access-Control-Allow-Methods":"PUT,POST,GET,DELETE,OPTIONS",
"X-Powered-By":"3.2.1",
"Content-Type":"application/json;charset=utf-8",
"Connection":"keep-alive"
});
var reqURL=request.url;
var result=reqURL + " 对应的json结果数据是什么?请进行配置";
var i=array.length;
while(i--){
if(reqURL.indexOf(array[i].url)==0){
result= array[i].json;
}
console.log(111);
}
// var params = url.parse(request.url, true).query;
// console.log(params);
response.write(result);
response.end();
}).listen(8787);
console.log('启动成功...');
② Layui的数据表格增删改，后端回传json格式封装
最近有个需求，实现前端页面一个数据表格可编辑，随原页面的表单提交json数据，然后后端回传显示。Layui原来也没怎么用过，记个笔记记录一下。
添加行的有个小bug，超过分页行数后，再添加会变成无数据。所以只好初始设置分页为50。
另外，搞了个隐藏的标签随表单一起提交：
从数据表格的缓存中获取表格内输入的值放入标签：
这个之前从table的缓存中提取得到提交的json串含有Layui数据表格的索引，回传Layuitable显示的时候不需要，需要去掉。所以后端用了个正则表达式去除。
为了满足layui数据表格的返回格式，封装了一下数据格式。
③ 后端返回 JSONObject 或者LinkedHashMap无序的解决办法
某日有个需求，后端返回的 jsonObject 里面的 key 需要按照某个顺序排序，我上网查了一下，可以使用 LinkedHashMap 创建JSONObject
这样子 key 就会按照某个添加的顺序读取了，但是我发现将数据返回前端的时候，前端获取的 key 并不是按照后端添加的顺序返回的，这样我很头疼，最直接就是将结构变成 List 集合，但是我不想修改返回的结构，怎么办呢？
后面想到一个办法，就是将返回的 JSONObject 或者 LinkedHashMap 变成一个 String 字符串返回，让前端去解析成这样之前的结构即可。完美解决！
④ layui如何处理返回的json数据
处理方法：
1、是将后端返回的数据改成layui标准格式就好啦(手动滑稽)。
2、方法二：借助response参数来重新设定返回的数据格式通过responsetip-14layui筛选列不随页。