如何在 Jquery Ajax 中向请求添加标头?

问题描述

我正在尝试使用 JQuery 在 Ajax 中为请求添加标头.

下面是代码:-

$.ajax({类型:发布"，内容类型:应用程序/json"，url: "http://localhost:8080/core-service/services/v1.0/patients/registerPatients",数据:JSON.stringify(耐心DTO)，//跨域:真，数据类型:'json'，标头:{X-AUTH-TOKEN":tokken}，成功:功能(耐心DTO){console.log("成功:", PatientDTO);/* location.href = "fieldagentHRA.html";*/如果(类型(存储)！==未定义"){localStorage.setItem("patUrn", patientDTO.data);location.href="fieldagentHRA.html";}},错误:函数(e){console.log("错误:", e);显示(e)；},完成:函数(e){启用注册按钮(真)；}});

我用 chrome 检查了这个，发现没有添加标题的正文.

然后我用

在两张图片中，请求标头 x-auth-token 都存在于ACCESS-CONTROL-REQUEST-HEADERS"中，但X-AUTH-TOKEN"标头以及标头值存在于第二张图片中，而第二张图片中不存在第一张照片.

所以我的问题是如何使用 JQuery 在 Ajax 中添加请求标头?

有几个解决方案取决于你想做什么

如果想为单个请求添加自定义标头(或一组标头)，只需添加 headers 属性，这将帮助您发送带有标头的请求.

//带有自定义标头的请求$.ajax({网址:'foo/bar'，标题:{'x-my-custom-header':'一些值'}});

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如果想为每个请求添加一个默认标头(或一组标头)，请使用 $.ajaxSetup(): 这将帮助您添加标头.

//在此处设置标头，然后调用 ajax$.ajaxSetup({标题:{'x-my-custom-header':'一些值'}});//发送你的ajax$.ajax({ url: 'foo/bar' });

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为每个请求添加一个标头(或一组标头)，然后将 beforeSend 钩子与 $.ajaxSetup() 一起使用:

//在此处挂上您的标头并使用发送前功能进行设置.$.ajaxSetup({发送前:函数(xhr){xhr.setRequestHeader('x-my-custom-header', '一些值');}});//发送你的ajax$.ajax({ url: 'foo/bar' });

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参考链接:AjaxSetup

参考链接:AjaxHeaders

I'm trying to add header to request in Ajax with JQuery.

Below is the code :-

$.ajax({
    type: "POST",
    contentType: "application/json",
    url: "http://localhost:8080/core-service/services/v1.0/patients/registerPatients",
    data: JSON.stringify(patientDTO),
    //crossDomain : true,
    dataType: 'json',
    headers: {"X-AUTH-TOKEN" : tokken},
    success: function(patientDTO) {
        console.log("SUCCESS: ", patientDTO);
        /* location.href = "fieldagentHRA.html";*/
        if (typeof(Storage) !== "undefined") {
            localStorage.setItem("patUrn", patientDTO.data);
            location.href="fieldagentHRA.html";
        }
    },
    error: function(e) {
    console.log("ERROR: ", e);
    display(e);
    },
    done: function(e) {
    enableRegisterButton(true);
    }
});

I inspected this with chrome and found that header's body is not being added.

Then I used Requestly (Requestly is chrome+firefox plugin with which we can manually add a header to the request).

After manually adding header :-

In both the pics request header x-auth-token is present in "ACCESS-CONTROL-REQUEST-HEADERS" but "X-AUTH-TOKEN" header along with header value is present in second pic which is not there in the first pic.

So my question is how to add request headers in Ajax with JQuery ?

There are couple of solutions depending on what you want to do

If want to add a custom header (or set of headers) to an individual request then just add the headers property and this will help you to send your request with headers.

// Request with custom header
$.ajax({
    url: 'foo/bar',
    headers: { 'x-my-custom-header': 'some value' }
});

If want to add a default header (or set of headers) to every request then use $.ajaxSetup(): this will help you to add headers.

//Setup headers here and than call ajax
$.ajaxSetup({
    headers: { 'x-my-custom-header': 'some value' }
});

// Sends your ajax
$.ajax({ url: 'foo/bar' });

add a header (or set of headers) to every request then use the beforeSend hook with $.ajaxSetup():

//Hook your headers here and set it with before send function.
$.ajaxSetup({
    beforeSend: function(xhr) {
        xhr.setRequestHeader('x-my-custom-header', 'some value');
    }
});

// Sends your ajax
$.ajax({ url: 'foo/bar' });

Reference Link : AjaxSetup

Reference Link : AjaxHeaders

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