我在解析序列化的JSON Ajax获取请求时发生问题(使用jQuery $ .ajax)发送到我的express.js 4服务器。作为JSON请求发送的数据由数据表生成。express.js 4来自GET请求的JSON解析问题(来自数据表的请求数据)
这里是我开始对客户端
$(document).ready(function() {
$('#example').dataTable({
"bServerSide": true,
"fnServerData": function (sSource, aoData, fnCallback) {
$.ajax({
"dataType": 'json',
contentType: 'application/json',
"type": "GET",
"url": "http://localhost:3000/ajax/phenotypes/withOrg/like/datatables/",
"data": aoData,
"success": fnCallback,
"error": function() {
alert('have some problem');
}
});
}
});
});
当我在布劳尔数据表加载此代码生成以下GET请求URL(到服务器):
GET /ajax /表型/ withOrg/like/datatables /?draw = 1 & columns =%5Bobject + Object%5D%2C%5Bobject + Object%5D%2C%5Bobject + Object%5D%2C%5Bobject + Object%5D%2C %5Bobject + Object%5D%2C%5Bobject + Object%5D & order =%5Bobject + Object%5D &开始= 0 &长度= 10 &搜索=%5Bobject +对象%5D
或以解码形式(从萤火虫输出)
columns [object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
draw 1
length 10
order [object Object]
search [object Object]
start 0
所以我发送
$(document).ready(function() {
$('#example').dataTable({
"bServerSide": true,
"fnServerData": function (sSource, aoData, fnCallback) {
var myData = JSON.stringify(aoData);
$.ajax({
"dataType": 'json',
contentType: 'application/json',
"type": "GET",
"url": "http://localhost:3000/ajax/phenotypes/withOrg/like/datatables/",
"data": myData,
"success": fnCallback,
"error": function() {
alert('have some problem');
}
});
}
});
});
前序列化的数据
这里是从数据表生成的GET参数:
解码形式GET /ajax/phenotypes/withOrg/like/datatables /?[{%22name%22:%22draw%22,%22value%22:1},{%22name%22:%22columns%22,%22value% 22:[{%22data%22:0,%22name%22:%22%22%22searchable%22:真,%22orderable%22:真,%22search%22:{%22value%22:%22%22 ,%22regex%22:假}},{%22data%22:1,%22name%22:%22%22%22searchable%22:真,%22orderable%22:真,%22search%22:{%22value %22:%22%22%22regex%22:假}},{%22data%22:2,%22name%22:%22%22%22searchable%22:真,%22orderable%22:真,% 22search%22:{%22value%22:%22%22%22regex%22:假}},{%22data%22:3,%22name%22:%22%22%22searchable%22:真,% 22orderable%22:真,%22search%22:{%22value%22:%22%22%22regex%22:假}},{%22data%22:4,%22name%22:%22%22% 22searchable%22:真,%22orderable%22:真,%22search%22:{%22value%22:%22%22%22regex%22:假}},{%22data%22:5,%22name%22 :%22%22%22searchable%22:真,%22orderable%22:真,%22search%22:{%22value%22:%22%22%22regex%22:假}}]},{%22name %22:%22order%22%22value%22:[ {%22column%22:0,%22dir%22:%22asc%22}]},{%22name%22:%22start%22%22value%22:0},{%22name%22:%22length%22 ,%22value%22:10},{%22name%22:%22search%22,%22value%22:{%22value%22:%22%22,%22regex%22:false}}] HTTP/1.1
(从萤火输出,并采用免工具用的JSLint检查在线美化,似乎是正确的!)
[
{
"name":"draw",
"value":1
},
{
"name":"columns",
"value":[
{
"data":0,
"name":"",
"searchable":true,
"orderable":true,
"search":{
"value":"",
"regex":false
}
},
{
"data":1,
"name":"",
"searchable":true,
"orderable":true,
"search":{
"value":"",
"regex":false
}
},
{
"data":2,
"name":"",
"searchable":true,
"orderable":true,
"search":{
"value":"",
"regex":false
}
},
{
"data":3,
"name":"",
"searchable":true,
"orderable":true,
"search":{
"value":"",
"regex":false
}
},
{
"data":4,
"name":"",
"searchable":true,
"orderable":true,
"search":{
"value":"",
"regex":false
}
},
{
"data":5,
"name":"",
"searchable":true,
"orderable":true,
"search":{
"value":"",
"regex":false
}
}
]
},
{
"name":"order",
"value":[
{
"column":0,
"dir":"asc"
}
]
},
{
"name":"start",
"value":0
},
{
"name":"length",
"value":10
},
{
"name":"search",
"value":{
"value":"",
"regex":false
}
}
]
现在的问题,这个字符串化的URL不能在快递4被解析为服务器端 我对此使用express4 req.query和url.parse方法:http://expressjs.com/api.html#req.query 然后尝试解析接收JSON字符串与JSON.parse()来法
...
var url = require('url');
...
router.get('/withOrg/like/datatables/', function (req, res) {
console.log('getting json string via req.query');
console.log(req.query);
console.log('output parsed json object using JSON.parse');
console.log(JSON.parse(req.query));
//another try
console.log('for stack overflows test 2');
console.log(url.parse(req.url, true).query);
console.log('output parsed json object using JSON.parse');
console.log(url.parse(req.url, true).query);
})
两个JSON字符串输出的结果是,你可以在这里看到和无法与JSON解析无效JSON。解析:
getting json string via req.query
{ “{ “数据”:0, “名”: “”, “搜索”:真实的, “订购”:真实的, “搜索”:{ “值”:” “ ”正则表达式“:假}},{ ”数据“:1, ”名“: ”“, ”搜索“:真实的, ”订购“:真实的, ”搜索“:{ ”值“: ”“,” 正则表达式“:假}},{” 数据 “:2,” 名 “:””, “搜索”:真实的, “订购”:真实的, “搜索”:{ “值”: “”, “正则表达式”:假} },{ “数据”:3, “名”: “”, “搜索”:真实的, “订购”:真实的, “搜索”:{ “值”: “”, “正则表达式”:假}},{”数据 “:4,” 姓名 “:””, “搜索”:真 “订购”:真, “搜索”:{ “值”: “”, “正则表达式”:假}},{ “数据”:5 ,“name”:“”,“searchable”:true,“orderable”:true,“search”:{“value”:“”,“regex”:false}}': {'{“column”:0 ,“dir”:“asc”}':''}}
output parsed json object using JSON.parse
getting json string via req.query
{ “{ “数据”:0, “姓名”: “”, “搜索”:真 “订购”:真, “搜索”:{ “值”: “”, “正则表达式”:假}},{ “数据”:1, “名”: “”, “搜索”:真实的, “订购”:真实的, “搜索”:{ “值”: “”, “正则表达式”:假}},{ “数据”:2, “名”: “”, “搜索”:真实的, “订购”:真实的, “搜索”:{ “值”: “”, “正则表达式”:假}}, { “数据”:3, “名”: “”, “搜索”:真实的, “订购”:真实的, “搜索”:{ “值”: “”, “正则表达式”:假}},{ “数据” :4中, “名称”: “”, “搜索”:真 “订购”:真, “搜索”:{ “值”: “”, “正则表达式”:假}},{ “数据”:5“, name“:”“,”searchable“:true,”orderable“:true,”search“:{”value“:”“,”regex“:false}}':'{”column“:0, dir“:”asc“}':''}}
output parsed json object using JSON.parse
当我试图解析JSON字符串,我从JSON.parse
SyntaxError: Unexpected token o
at Object.parse (native)
at module.exports (/Users/xxx/yyy/routes/phenotypesAJAX.js:16:19)
at Layer.handle [as handle_request] (/Users/xxx/yyy/node_modules/express/lib/router/layer.js:82:5)
at next (/Users/xxx/yyy/node_modules/express/lib/router/route.js:100:13)
得到错误这是快递4的错误吗? 我看不出问题在哪里。在客户端,序列化的数据表GET请求似乎有效(用JSLint检查)。在express4服务器端,我找不到任何其他方式以不同的方式解析GET请求。
非常感谢你的帮助, 奥利弗