如何使用 JQuery 发布 JSON 数据?
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How can I use JQuery to post JSON data?
提问by Jonas
I would like to post Json to a web service on the same server. But I don't know how to post Json using JQuery. I have tried with this code:
我想将 Json 发布到同一服务器上的 Web 服务。但我不知道如何使用 JQuery 发布 Json。我试过这个代码:
$.ajax({
type: 'POST',
url: '/form/',
data: {"name":"jonas"},
success: function(data) { alert('data: ' + data); },
contentType: "application/json",
dataType: 'json'
});
But using this JQuery code the data is not received as Json on the server. This is the expected data at the server: {"name":"jonas"}
but using JQuery the server receive name=jonas
. Or in other words, it's "urlencoded" data and not Json.
但是使用此 JQuery 代码,数据不会作为 Json 在服务器上接收。这是服务器上的预期数据:{"name":"jonas"}
但使用 JQuery 服务器接收name=jonas
。或者换句话说,它是“urlencoded”数据而不是 Json。
Is there any way to post the data in Json format instead of urlencoded data using JQuery? Or do I have to use a manual ajax request?
有没有办法使用 JQuery 以 Json 格式而不是 urlencoded 数据发布数据?还是我必须使用手动 ajax 请求?
回答by lonesomeday
You're passing an object, nota JSON string. When you pass an object, jQuery uses $.param
to serialize the object into name-value pairs.
您正在传递一个对象,而不是一个 JSON 字符串。当您传递一个对象时,jQuery 使用$.param
将对象序列化为名称-值对。
If you pass the data as a string, it won't be serialized:
如果您将数据作为字符串传递,它将不会被序列化:
$.ajax({
type: 'POST',
url: '/form/',
data: '{"name":"jonas"}', // or JSON.stringify ({name: 'jonas'}),
success: function(data) { alert('data: ' + data); },
contentType: "application/json",
dataType: 'json'
});
回答by Ninh Pham
Base on lonesomeday's answer, I create a jpost
that wraps certain parameters.
基于lonesomeday的答案,我创建了一个jpost
包装某些参数的。
$.extend({
jpost: function(url, body) {
return $.ajax({
type: 'POST',
url: url,
data: JSON.stringify(body),
contentType: "application/json",
dataType: 'json'
});
}
});
Usage:
用法:
$.jpost('/form/', { name: 'Jonh' }).then(res => {
console.log(res);
});
回答by Lee Harding
I tried Ninh Pham's solution but it didn't work for me until I tweaked it - see below. Remove contentType and don't encode your json data
我尝试了 Ninh Pham 的解决方案,但在我调整它之前它对我不起作用 - 见下文。删除 contentType 并且不编码您的 json 数据
$.fn.postJSON = function(url, data) {
return $.ajax({
type: 'POST',
url: url,
data: data,
dataType: 'json'
});
回答by David Arun
The top answer worked fine but I suggest saving your JSON data into a variable before posting it is a little bit cleaner when sending a long form or dealing with large data in general.
最佳答案工作正常,但我建议在发送长表单或处理大数据时,在发布之前将您的 JSON 数据保存到变量中,这样会更清晰一些。
var Data = {
"name":"jonsa",
"e-mail":"[email protected]",
"phone":1223456789
};
$.ajax({
type: 'POST',
url: '/form/',
data: Data,
success: function(data) { alert('data: ' + data); },
contentType: "application/json",
dataType: 'json'
});
回答by loretoparisi
Using Promise
and checking if the body
object is a valid JSON. If not a Promise reject
will be returned.
使用Promise
并检查body
对象是否是有效的 JSON。如果不是,reject
将返回一个 Promise 。
var DoPost = function(url, body) {
try {
body = JSON.stringify(body);
} catch (error) {
return reject(error);
}
return new Promise((resolve, reject) => {
$.ajax({
type: 'POST',
url: url,
data: body,
contentType: "application/json",
dataType: 'json'
})
.done(function(data) {
return resolve(data);
})
.fail(function(error) {
console.error(error);
return reject(error);
})
.always(function() {
// called after done or fail
});
});
}