我有一个对象数组,每个对象都包含一个位置和一个不确定长度的链接数组。如何创建带有循环的多级 JSON 对象?
最终的 JSON 应该是这样的
item1: [
{ "location": [
{"latitude": value, "longitude": value, "stopNum": value, "fileName": value }
],
"links": [
{"latitude": value, "longitude": value, "stopNum": value, "fileName": value },
{"latitude": value, "longitude": value, "stopNum": value, "fileName": value },
{"latitude": value, "longitude": value, "stopNum": value, "fileName": value }
]
}
],
item2: [ //repeat of above ]
我遇到的问题是如何正确形成对象。数组包含的对象定义为
function Links(){
this.location = null;
this.links= [];
function getLocation(){
return location;
}
function setLocation(marker){
this.location = marker;
}
function getLinks(){
return links;
}
}
我目前的解决方案是
var json=[];
var linkData;
for (var i=0; i < tourList.length; i++){
var data = tourList[i];
//create new child array for insertion
var child=[];
//push location marker data
child.push({
latitude: data.location.position.$a,
longitude: data.location.position.ab,
stopNum: i,
filename: data.location.title
});
//add associated link data
for (var j=0; j<data.links.length; j++){
linkData = data.links[i];
child.push({
latitude: linkData.position.$a,
longitude: linkData.position.ab,
stopNum: i+j,
fileName: linkData.title
});
}
//push to json array
json.push(child);
}
//stringify the JSON and post results
var results= JSON.stringify(json);
但是,这并不完全有效,因为
$post= json_decode($_POST['json'])
PHP 语句返回一个格式错误的数组,该数组$post.length
被视为未定义的常量。我假设这是由于格式不正确。
使用上面定义的对象,如何创建格式良好的 JSON 以发送到服务器?
目前的结果stringify()
是
[
{"latitude":43.682211,"longitude":-70.45070499999997,"stopNum":0,"filename":"../panos/photos/1-prefix_blended_fused.jpg"},
[
{"latitude":43.6822,"longitude":-70.45076899999998,"stopNum":0,"fileName":"../panos/photos/2-prefix_blended_fused.jpg"}
],
{"latitude":43.6822,"longitude":-70.45076899999998,"stopNum":1,"filename":"../panos/photos/2-prefix_blended_fused.jpg"},
[
{"latitude":43.68218,"longitude":-70.45088699999997,"stopNum":1,"fileName":"../panos/photos/4-prefix_blended_fused.jpg"},
{"latitude":43.68218,"longitude":-70.45088699999997,"stopNum":2,"fileName":"../panos/photos/4-prefix_blended_fused.jpg"}
]
]
另外,我正在$post.length
使用
$post = json_decode($POST['json']);
for ($i=0; $i<$post.length; $i++) { }
遍历处理过的数组。
POST 请求是通过jQuery.ajax()
定义为的函数
$.ajax({
type: "POST",
url: "../includes/phpscripts.php?action=postTour",
data: {"json":results},
beforeSend: function(x){
if (x && x.overrideMimeType){
x.overrideMimeType("application/json;charset=UTF-8");
}
},
success: function(data){
if (data == "success")
console.log("Tour update successful");
else
console.log("Tour update failed");
}
});