无法在javascript onreadystatechange中读取自定义http标头？ [英] Unable to read custom http headers in javascript onreadystatechange?
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问题描述
虽然我正在尝试阅读自定义http标头。我正在寻找空。
While i am trying to read custom http headers.i am hetting null.
泽西岛认证资源： -
Jersey authentication resource :-
@Path("/redirect")
public class RedirectDemo {
@POST
@Consumes(MediaType. APPLICATION_JSON )
public Response getRedirect(@Context ServletContext context,UserTO user) {
UriBuilder builder = UriBuilder.fromPath(context.getContextPath());
System. out .println("User name is:"+user.getUserName());
System. out .println("Password is:"+user.getPassword());
builder.path("/main.html");
return Response
.status(Response.Status. SEE_OTHER )
.header(HttpHeaders. AUTHORIZATION ,"Response authorize")
.header("Access-Control-Allow-Origin", "*")
.header("Access-Control-Allow-Methods", "GET, POST,
DELETE, PUT")
.header("Access-Control-Expose-
Headers",HttpHeaders. AUTHORIZATION )
.header(HttpHeaders. LOCATION , builder.build())
.build();
}
}
登录 - 页面： -
Login – page :-
<! DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Login</title>
</head>
<body>
<div class="container-test">
<h3>
<strong>iDNS</strong>
</h3>
</div>
<div class="container">
<form class="form-signin" id="loginForm" name="loginForm"
action="/JerseyPageRedirection/redirect/redirect" method="post"
id="login_form">
<div class="errmsg text-center"></div>
<label for="inputEmail">Email address</label> <input
type="email"
id="emailId" class="form-control" name="emailId"<label
type="password"
placeholder="Email address" required autofocus> <br>
for="inputPassword">Password</label> <input
id="password" class="form-control" name="password"
placeholder="Password" required> <br>
<!-- id="login-submit" -->
<button type="button" class="btn btn-lg btn-primary btn-block"
onclick="doLogin()">Sign in</button>
</form>
</div>
<script>
function doLogin() {
var userName = window
.btoa(document.getElementById('emailId').value);
var password = window
.btoa(document.getElementById('password').value);
var formData = JSON.stringify({
userName : userName,
password : password
});
var xhr = new XMLHttpRequest();
xhr.open("POST", "/JerseyPageRedirection/redirect/redirect");
xhr.setRequestHeader("Content-type", "application/json");
xhr.send(formData);
xhr.onreadystatechange = function() {
console.log(xhr.getResponseHeader("Authorization"));//null
window.location.href = xhr.responseURL;//Redirect works
}
}
</script>
</body>
</html>
标题： -
< img src =https://i.stack.imgur.com/MmyFa.pngalt =在此输入图像说明>
问题： -
I am unable read Authorization header content.
我想只在javascript中读取标题值。在此先感谢。
I want to read the header value only in javascript. Thanks in advance.
推荐答案
如果有人仍在寻找答案，您需要设置Access-Control-Expose-Headers与反应一起。例如：
If someone still looking for the answer, you need to set "Access-Control-Expose-Headers" along side with the response. In example :
Access-Control-Expose-Headers: Content-Type,Authorization,X-RateLimit-Limit,X-RateLimit-Remaining,X-RateLimit-Reset
这篇关于无法在javascript onreadystatechange中读取自定义http标头？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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