我想将我的JSON对象写入服务器上的.json文件。我目前的做法是:
JavaScript:
JavaScript:
function createJsonFile() {
var jsonObject = {
"metros" : [],
"routes" : []
};
// write cities to JSON Object
for ( var index = 0; index < graph.getVerticies().length; index++) {
jsonObject.metros[index] = JSON.stringify(graph.getVertex(index).getData());
}
// write routes to JSON Object
for ( var index = 0; index < graph.getEdges().length; index++) {
jsonObject.routes[index] = JSON.stringify(graph.getEdge(index));
}
// some jQuery to write to file
$.ajax({
type : "POST",
url : "json.php",
dataType : 'json',
data : {
json : jsonObject
}
});
};
PHP:
<?php
$json = $_POST['json'];
$info = json_encode($json);
$file = fopen('new_map_data.json','w+');
fwrite($file, $info);
fclose($file);
?>
它的内容正常写入,信息也看起来正确,但无法正确地呈现。输出结果如下:
{"metros":["{\\\"code\\\":\\\"SCL\\\",\\\"name\\\":\\\"Santiago\\\",\\\"country\\\":\\\"CL\\\",\\\"continent\\\":\\\"South America\\\",\\\"timezone\\\":-4,\\\"coordinates\\\":{\\\"S\\\":33,\\\"W\\\":71},\\\"population\\\":6000000,\\\"region\\\":1}",
...但我期望得到这个:
"metros" : [
{
"code" : "SCL" ,
"name" : "Santiago" ,
"country" : "CL" ,
"continent" : "South America" ,
"timezone" : -4 ,
"coordinates" : {"S" : 33, "W" : 71} ,
"population" : 6000000 ,
"region" : 1
} ,
为什么我会得到这么多斜杠,而且它们都在同一行?